* Texture sampling -- SoA.
*
* @author Jose Fonseca <jfonseca@vmware.com>
+ * @author Brian Paul <brianp@vmware.com>
*/
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
+#include "pipe/p_shader_tokens.h"
#include "util/u_debug.h"
#include "util/u_dump.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_format.h"
#include "util/u_cpu_detect.h"
+#include "util/u_format_rgb9e5.h"
#include "lp_bld_debug.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
#include "lp_bld_conv.h"
#include "lp_bld_arit.h"
+#include "lp_bld_bitarit.h"
#include "lp_bld_logic.h"
+#include "lp_bld_printf.h"
#include "lp_bld_swizzle.h"
-#include "lp_bld_pack.h"
#include "lp_bld_flow.h"
+#include "lp_bld_gather.h"
#include "lp_bld_format.h"
#include "lp_bld_sample.h"
-
-
-/**
- * Keep all information for sampling code generation in a single place.
- */
-struct lp_build_sample_context
-{
- LLVMBuilderRef builder;
-
- const struct lp_sampler_static_state *static_state;
-
- struct lp_sampler_dynamic_state *dynamic_state;
-
- const struct util_format_description *format_desc;
-
- /** regular scalar float type */
- struct lp_type float_type;
- struct lp_build_context float_bld;
-
- /** regular scalar float type */
- struct lp_type int_type;
- struct lp_build_context int_bld;
-
- /** Incoming coordinates type and build context */
- struct lp_type coord_type;
- struct lp_build_context coord_bld;
-
- /** Unsigned integer coordinates */
- struct lp_type uint_coord_type;
- struct lp_build_context uint_coord_bld;
-
- /** Signed integer coordinates */
- struct lp_type int_coord_type;
- struct lp_build_context int_coord_bld;
-
- /** Output texels type and build context */
- struct lp_type texel_type;
- struct lp_build_context texel_bld;
-};
-
-
-/**
- * Does the given texture wrap mode allow sampling the texture border color?
- * XXX maybe move this into gallium util code.
- */
-static boolean
-wrap_mode_uses_border_color(unsigned mode)
-{
- switch (mode) {
- case PIPE_TEX_WRAP_REPEAT:
- case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- case PIPE_TEX_WRAP_MIRROR_REPEAT:
- case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
- return FALSE;
- case PIPE_TEX_WRAP_CLAMP:
- case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- case PIPE_TEX_WRAP_MIRROR_CLAMP:
- case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
- return TRUE;
- default:
- assert(0 && "unexpected wrap mode");
- return FALSE;
- }
-}
-
-
-static LLVMValueRef
-lp_build_get_mipmap_level(struct lp_build_sample_context *bld,
- LLVMValueRef data_array, LLVMValueRef level)
-{
- LLVMValueRef indexes[2], data_ptr;
- indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
- indexes[1] = level;
- data_ptr = LLVMBuildGEP(bld->builder, data_array, indexes, 2, "");
- data_ptr = LLVMBuildLoad(bld->builder, data_ptr, "");
- return data_ptr;
-}
-
-
-static LLVMValueRef
-lp_build_get_const_mipmap_level(struct lp_build_sample_context *bld,
- LLVMValueRef data_array, int level)
-{
- LLVMValueRef lvl = LLVMConstInt(LLVMInt32Type(), level, 0);
- return lp_build_get_mipmap_level(bld, data_array, lvl);
-}
-
-
-/**
- * Dereference stride_array[mipmap_level] array to get a stride.
- * Return stride as a vector.
- */
-static LLVMValueRef
-lp_build_get_level_stride_vec(struct lp_build_sample_context *bld,
- LLVMValueRef stride_array, LLVMValueRef level)
-{
- LLVMValueRef indexes[2], stride;
- indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
- indexes[1] = level;
- stride = LLVMBuildGEP(bld->builder, stride_array, indexes, 2, "");
- stride = LLVMBuildLoad(bld->builder, stride, "");
- stride = lp_build_broadcast_scalar(&bld->int_coord_bld, stride);
- return stride;
-}
-
-
-/** Dereference stride_array[0] array to get a stride (as vector). */
-static LLVMValueRef
-lp_build_get_const_level_stride_vec(struct lp_build_sample_context *bld,
- LLVMValueRef stride_array, int level)
-{
- LLVMValueRef lvl = LLVMConstInt(LLVMInt32Type(), level, 0);
- return lp_build_get_level_stride_vec(bld, stride_array, lvl);
-}
-
-
-static int
-texture_dims(enum pipe_texture_target tex)
-{
- switch (tex) {
- case PIPE_TEXTURE_1D:
- return 1;
- case PIPE_TEXTURE_2D:
- case PIPE_TEXTURE_CUBE:
- return 2;
- case PIPE_TEXTURE_3D:
- return 3;
- default:
- assert(0 && "bad texture target in texture_dims()");
- return 2;
- }
-}
-
+#include "lp_bld_sample_aos.h"
+#include "lp_bld_struct.h"
+#include "lp_bld_quad.h"
+#include "lp_bld_pack.h"
/**
* Generate code to fetch a texel from a texture at int coords (x, y, z).
* The computation depends on whether the texture is 1D, 2D or 3D.
- * The result, texel, will be:
+ * The result, texel, will be float vectors:
* texel[0] = red values
* texel[1] = green values
* texel[2] = blue values
LLVMValueRef y_stride,
LLVMValueRef z_stride,
LLVMValueRef data_ptr,
- LLVMValueRef *texel)
+ LLVMValueRef mipoffsets,
+ LLVMValueRef texel_out[4])
{
- const int dims = texture_dims(bld->static_state->target);
+ const struct lp_static_sampler_state *static_state = bld->static_sampler_state;
+ const unsigned dims = bld->dims;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ LLVMBuilderRef builder = bld->gallivm->builder;
LLVMValueRef offset;
LLVMValueRef i, j;
LLVMValueRef use_border = NULL;
/* use_border = x < 0 || x >= width || y < 0 || y >= height */
- if (wrap_mode_uses_border_color(bld->static_state->wrap_s)) {
+ if (lp_sampler_wrap_mode_uses_border_color(static_state->wrap_s,
+ static_state->min_img_filter,
+ static_state->mag_img_filter)) {
LLVMValueRef b1, b2;
b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero);
b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width);
- use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
+ use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2");
}
- if (dims >= 2 && wrap_mode_uses_border_color(bld->static_state->wrap_t)) {
+ if (dims >= 2 &&
+ lp_sampler_wrap_mode_uses_border_color(static_state->wrap_t,
+ static_state->min_img_filter,
+ static_state->mag_img_filter)) {
LLVMValueRef b1, b2;
b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero);
b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height);
if (use_border) {
- use_border = LLVMBuildOr(bld->builder, use_border, b1, "ub_or_b1");
- use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2");
+ use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1");
+ use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2");
}
else {
- use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
+ use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2");
}
}
- if (dims == 3 && wrap_mode_uses_border_color(bld->static_state->wrap_r)) {
+ if (dims == 3 &&
+ lp_sampler_wrap_mode_uses_border_color(static_state->wrap_r,
+ static_state->min_img_filter,
+ static_state->mag_img_filter)) {
LLVMValueRef b1, b2;
b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero);
b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth);
if (use_border) {
- use_border = LLVMBuildOr(bld->builder, use_border, b1, "ub_or_b1");
- use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2");
+ use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1");
+ use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2");
}
else {
- use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
+ use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2");
}
}
- /*
- * Describe the coordinates in terms of pixel blocks.
- *
- * TODO: pixel blocks are power of two. LLVM should convert rem/div to
- * bit arithmetic. Verify this.
- */
-
- if (bld->format_desc->block.width == 1) {
- i = bld->uint_coord_bld.zero;
- }
- else {
- LLVMValueRef block_width = lp_build_const_int_vec(bld->uint_coord_bld.type, bld->format_desc->block.width);
- i = LLVMBuildURem(bld->builder, x, block_width, "");
- x = LLVMBuildUDiv(bld->builder, x, block_width, "");
+ /* convert x,y,z coords to linear offset from start of texture, in bytes */
+ lp_build_sample_offset(&bld->int_coord_bld,
+ bld->format_desc,
+ x, y, z, y_stride, z_stride,
+ &offset, &i, &j);
+ if (mipoffsets) {
+ offset = lp_build_add(&bld->int_coord_bld, offset, mipoffsets);
}
- if (bld->format_desc->block.height == 1) {
- j = bld->uint_coord_bld.zero;
- }
- else {
- LLVMValueRef block_height = lp_build_const_int_vec(bld->uint_coord_bld.type, bld->format_desc->block.height);
- j = LLVMBuildURem(bld->builder, y, block_height, "");
- y = LLVMBuildUDiv(bld->builder, y, block_height, "");
+ if (use_border) {
+ /* If we can sample the border color, it means that texcoords may
+ * lie outside the bounds of the texture image. We need to do
+ * something to prevent reading out of bounds and causing a segfault.
+ *
+ * Simply AND the texture coords with !use_border. This will cause
+ * coords which are out of bounds to become zero. Zero's guaranteed
+ * to be inside the texture image.
+ */
+ offset = lp_build_andnot(&bld->int_coord_bld, offset, use_border);
}
- /* convert x,y,z coords to linear offset from start of texture, in bytes */
- offset = lp_build_sample_offset(&bld->uint_coord_bld,
- bld->format_desc,
- x, y, z, y_stride, z_stride);
-
- lp_build_fetch_rgba_soa(bld->builder,
+ lp_build_fetch_rgba_soa(bld->gallivm,
bld->format_desc,
bld->texel_type,
data_ptr, offset,
i, j,
- texel);
+ texel_out);
/*
* Note: if we find an app which frequently samples the texture border
*/
if (use_border) {
- /* select texel color or border color depending on use_border */
+ /* select texel color or border color depending on use_border. */
+ const struct util_format_description *format_desc = bld->format_desc;
int chan;
+ struct lp_type border_type = bld->texel_type;
+ border_type.length = 4;
+ /*
+ * Only replace channels which are actually present. The others should
+ * get optimized away eventually by sampler_view swizzle anyway but it's
+ * easier too.
+ */
for (chan = 0; chan < 4; chan++) {
- LLVMValueRef border_chan =
- lp_build_const_vec(bld->texel_type,
- bld->static_state->border_color[chan]);
- texel[chan] = lp_build_select(&bld->texel_bld, use_border,
- border_chan, texel[chan]);
+ unsigned chan_s;
+ /* reverse-map channel... */
+ for (chan_s = 0; chan_s < 4; chan_s++) {
+ if (chan_s == format_desc->swizzle[chan]) {
+ break;
+ }
+ }
+ if (chan_s <= 3) {
+ /* use the already clamped color */
+ LLVMValueRef idx = lp_build_const_int32(bld->gallivm, chan);
+ LLVMValueRef border_chan;
+
+ border_chan = lp_build_extract_broadcast(bld->gallivm,
+ border_type,
+ bld->texel_type,
+ bld->border_color_clamped,
+ idx);
+ texel_out[chan] = lp_build_select(&bld->texel_bld, use_border,
+ border_chan, texel_out[chan]);
+ }
}
}
}
-static LLVMValueRef
-lp_build_sample_packed(struct lp_build_sample_context *bld,
- LLVMValueRef x,
- LLVMValueRef y,
- LLVMValueRef y_stride,
- LLVMValueRef data_array)
-{
- LLVMValueRef offset;
- LLVMValueRef data_ptr;
-
- offset = lp_build_sample_offset(&bld->uint_coord_bld,
- bld->format_desc,
- x, y, NULL, y_stride, NULL);
-
- assert(bld->format_desc->block.width == 1);
- assert(bld->format_desc->block.height == 1);
- assert(bld->format_desc->block.bits <= bld->texel_type.width);
-
- /* get pointer to mipmap level 0 data */
- data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0);
-
- return lp_build_gather(bld->builder,
- bld->texel_type.length,
- bld->format_desc->block.bits,
- bld->texel_type.width,
- data_ptr, offset);
-}
-
-
/**
* Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes.
*/
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
LLVMValueRef fract, flr, isOdd;
- /* fract = coord - floor(coord) */
- fract = lp_build_sub(coord_bld, coord, lp_build_floor(coord_bld, coord));
-
- /* flr = ifloor(coord); */
- flr = lp_build_ifloor(coord_bld, coord);
+ lp_build_ifloor_fract(coord_bld, coord, &flr, &fract);
/* isOdd = flr & 1 */
- isOdd = LLVMBuildAnd(bld->builder, flr, int_coord_bld->one, "");
+ isOdd = LLVMBuildAnd(bld->gallivm->builder, flr, int_coord_bld->one, "");
/* make coord positive or negative depending on isOdd */
coord = lp_build_set_sign(coord_bld, fract, isOdd);
/**
- * We only support a few wrap modes in lp_build_sample_wrap_int() at this time.
- * Return whether the given mode is supported by that function.
- */
-static boolean
-is_simple_wrap_mode(unsigned mode)
-{
- switch (mode) {
- case PIPE_TEX_WRAP_REPEAT:
- case PIPE_TEX_WRAP_CLAMP:
- case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- return TRUE;
- case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- default:
- return FALSE;
- }
-}
-
-
-/**
- * Build LLVM code for texture wrap mode, for scaled integer texcoords.
- * \param coord the incoming texcoord (s,t,r or q) scaled to the texture size
- * \param length the texture size along one dimension
- * \param is_pot if TRUE, length is a power of two
- * \param wrap_mode one of PIPE_TEX_WRAP_x
+ * Helper to compute the first coord and the weight for
+ * linear wrap repeat npot textures
*/
-static LLVMValueRef
-lp_build_sample_wrap_int(struct lp_build_sample_context *bld,
- LLVMValueRef coord,
- LLVMValueRef length,
- boolean is_pot,
- unsigned wrap_mode)
+void
+lp_build_coord_repeat_npot_linear(struct lp_build_sample_context *bld,
+ LLVMValueRef coord_f,
+ LLVMValueRef length_i,
+ LLVMValueRef length_f,
+ LLVMValueRef *coord0_i,
+ LLVMValueRef *weight_f)
{
- struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
+ struct lp_build_context *coord_bld = &bld->coord_bld;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
- LLVMValueRef length_minus_one;
-
- length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
-
- switch(wrap_mode) {
- case PIPE_TEX_WRAP_REPEAT:
- if(is_pot)
- coord = LLVMBuildAnd(bld->builder, coord, length_minus_one, "");
- else
- /* Signed remainder won't give the right results for negative
- * dividends but unsigned remainder does.*/
- coord = LLVMBuildURem(bld->builder, coord, length, "");
- break;
-
- case PIPE_TEX_WRAP_CLAMP:
- case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- coord = lp_build_max(int_coord_bld, coord, int_coord_bld->zero);
- coord = lp_build_min(int_coord_bld, coord, length_minus_one);
- break;
-
- case PIPE_TEX_WRAP_MIRROR_REPEAT:
- case PIPE_TEX_WRAP_MIRROR_CLAMP:
- case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
- case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
- /* FIXME */
- _debug_printf("llvmpipe: failed to translate texture wrap mode %s\n",
- util_dump_tex_wrap(wrap_mode, TRUE));
- coord = lp_build_max(uint_coord_bld, coord, uint_coord_bld->zero);
- coord = lp_build_min(uint_coord_bld, coord, length_minus_one);
- break;
-
- default:
- assert(0);
- }
-
- return coord;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5);
+ LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length_i,
+ int_coord_bld->one);
+ LLVMValueRef mask;
+ /* wrap with normalized floats is just fract */
+ coord_f = lp_build_fract(coord_bld, coord_f);
+ /* mul by size and subtract 0.5 */
+ coord_f = lp_build_mul(coord_bld, coord_f, length_f);
+ coord_f = lp_build_sub(coord_bld, coord_f, half);
+ /*
+ * we avoided the 0.5/length division before the repeat wrap,
+ * now need to fix up edge cases with selects
+ */
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord_f, coord0_i, weight_f);
+ mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type,
+ PIPE_FUNC_LESS, *coord0_i, int_coord_bld->zero);
+ *coord0_i = lp_build_select(int_coord_bld, mask, length_minus_one, *coord0_i);
}
lp_build_sample_wrap_linear(struct lp_build_sample_context *bld,
LLVMValueRef coord,
LLVMValueRef length,
+ LLVMValueRef length_f,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode,
LLVMValueRef *x0_out,
{
struct lp_build_context *coord_bld = &bld->coord_bld;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
- struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
- LLVMValueRef two = lp_build_const_vec(coord_bld->type, 2.0);
- LLVMValueRef half = lp_build_const_vec(coord_bld->type, 0.5);
- LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
- LLVMValueRef length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
- LLVMValueRef length_f_minus_one = lp_build_sub(coord_bld, length_f, coord_bld->one);
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5);
+ LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
LLVMValueRef coord0, coord1, weight;
switch(wrap_mode) {
case PIPE_TEX_WRAP_REPEAT:
- /* mul by size and subtract 0.5 */
- coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_sub(coord_bld, coord, half);
- /* convert to int */
- coord0 = lp_build_ifloor(coord_bld, coord);
- coord1 = lp_build_add(uint_coord_bld, coord0, uint_coord_bld->one);
- /* compute lerp weight */
- weight = lp_build_fract(coord_bld, coord);
- /* repeat wrap */
if (is_pot) {
- coord0 = LLVMBuildAnd(bld->builder, coord0, length_minus_one, "");
- coord1 = LLVMBuildAnd(bld->builder, coord1, length_minus_one, "");
+ /* mul by size and subtract 0.5 */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_sub(coord_bld, coord, half);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* repeat wrap */
+ coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, "");
+ coord1 = LLVMBuildAnd(builder, coord1, length_minus_one, "");
}
else {
- /* Signed remainder won't give the right results for negative
- * dividends but unsigned remainder does.*/
- coord0 = LLVMBuildURem(bld->builder, coord0, length, "");
- coord1 = LLVMBuildURem(bld->builder, coord1, length, "");
+ LLVMValueRef mask;
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ lp_build_coord_repeat_npot_linear(bld, coord,
+ length, length_f,
+ &coord0, &weight);
+ mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type,
+ PIPE_FUNC_NOTEQUAL, coord0, length_minus_one);
+ coord1 = LLVMBuildAnd(builder,
+ lp_build_add(int_coord_bld, coord0, int_coord_bld->one),
+ mask, "");
}
break;
case PIPE_TEX_WRAP_CLAMP:
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
- weight = lp_build_fract(coord_bld, coord);
- coord0 = lp_build_clamp(coord_bld, coord, coord_bld->zero,
- length_f_minus_one);
- coord1 = lp_build_add(coord_bld, coord, coord_bld->one);
- coord1 = lp_build_clamp(coord_bld, coord1, coord_bld->zero,
- length_f_minus_one);
- coord0 = lp_build_ifloor(coord_bld, coord0);
- coord1 = lp_build_ifloor(coord_bld, coord1);
- break;
-
- case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- if (bld->static_state->normalized_coords) {
- /* clamp to [0,1] */
- coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, coord_bld->one);
- /* mul by tex size and subtract 0.5 */
- coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_sub(coord_bld, coord, half);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
}
- else {
- LLVMValueRef min, max;
- /* clamp to [0.5, length - 0.5] */
- min = lp_build_const_vec(coord_bld->type, 0.5F);
- max = lp_build_sub(coord_bld, length_f, min);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- }
- /* compute lerp weight */
- weight = lp_build_fract(coord_bld, coord);
- /* coord0 = floor(coord); */
- coord0 = lp_build_ifloor(coord_bld, coord);
+
+ /* clamp to [0, length] */
+ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f);
+
+ coord = lp_build_sub(coord_bld, coord, half);
+
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
- /* coord0 = max(coord0, 0) */
- coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
- /* coord1 = min(coord1, length-1) */
- coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
break;
- case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
{
- LLVMValueRef min, max;
- if (bld->static_state->normalized_coords) {
- /* min = -1.0 / (2 * length) = -0.5 / length */
- min = lp_build_mul(coord_bld,
- lp_build_const_vec(coord_bld->type, -0.5F),
- lp_build_rcp(coord_bld, length_f));
- /* max = 1.0 - min */
- max = lp_build_sub(coord_bld, coord_bld->one, min);
- /* coord = clamp(coord, min, max) */
- coord = lp_build_clamp(coord_bld, coord, min, max);
- /* scale coord to length (and sub 0.5?) */
+ struct lp_build_context abs_coord_bld = bld->coord_bld;
+ abs_coord_bld.type.sign = FALSE;
+
+ if (bld->static_sampler_state->normalized_coords) {
+ /* mul by tex size */
coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_sub(coord_bld, coord, half);
}
- else {
- /* clamp to [-0.5, length + 0.5] */
- min = lp_build_const_vec(coord_bld->type, -0.5F);
- max = lp_build_sub(coord_bld, length_f, min);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- coord = lp_build_sub(coord_bld, coord, half);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
}
- /* compute lerp weight */
- weight = lp_build_fract(coord_bld, coord);
- /* convert to int */
- coord0 = lp_build_ifloor(coord_bld, coord);
+
+ /* clamp to length max */
+ coord = lp_build_min(coord_bld, coord, length_f);
+ /* subtract 0.5 */
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* clamp to [0, length - 0.5] */
+ coord = lp_build_max(coord_bld, coord, coord_bld->zero);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+ break;
+ }
+
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */
+ /* can skip clamp (though might not work for very large coord values */
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
coord = lp_build_sub(coord_bld, coord, half);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
- /* compute lerp weight */
- weight = lp_build_fract(coord_bld, coord);
-
- /* convert to int coords */
- coord0 = lp_build_ifloor(coord_bld, coord);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
/* coord0 = max(coord0, 0) */
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
- {
- LLVMValueRef min, max;
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- /* max = 1.0 - min */
- max = lp_build_sub(coord_bld, coord_bld->one, min);
-
- coord = lp_build_abs(coord_bld, coord);
- coord = lp_build_clamp(coord_bld, coord, min, max);
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
- if(0)coord = lp_build_sub(coord_bld, coord, half);
- weight = lp_build_fract(coord_bld, coord);
- coord0 = lp_build_ifloor(coord_bld, coord);
- coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
+
+ /* clamp to [0, length] */
+ coord = lp_build_min(coord_bld, coord, length_f);
+
+ coord = lp_build_sub(coord_bld, coord, half);
+
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
{
- LLVMValueRef min, max;
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- /* max = 1.0 - min */
- max = lp_build_sub(coord_bld, coord_bld->one, min);
+ struct lp_build_context abs_coord_bld = bld->coord_bld;
+ abs_coord_bld.type.sign = FALSE;
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ }
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
coord = lp_build_abs(coord_bld, coord);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- coord = lp_build_mul(coord_bld, coord, length_f);
+
+ /* clamp to length max */
+ coord = lp_build_min(coord_bld, coord, length_f);
+ /* subtract 0.5 */
coord = lp_build_sub(coord_bld, coord, half);
- weight = lp_build_fract(coord_bld, coord);
- coord0 = lp_build_ifloor(coord_bld, coord);
+ /* clamp to [0, length - 0.5] */
+ coord = lp_build_max(coord_bld, coord, coord_bld->zero);
+
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
}
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
{
- LLVMValueRef min, max;
- /* min = -1.0 / (2 * length) = -0.5 / length */
- min = lp_build_mul(coord_bld,
- lp_build_const_vec(coord_bld->type, -0.5F),
- lp_build_rcp(coord_bld, length_f));
- /* max = 1.0 - min */
- max = lp_build_sub(coord_bld, coord_bld->one, min);
-
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ }
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
coord = lp_build_abs(coord_bld, coord);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- coord = lp_build_mul(coord_bld, coord, length_f);
+
+ /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */
+ /* skip clamp - always positive, and other side
+ only potentially matters for very large coords */
coord = lp_build_sub(coord_bld, coord, half);
- weight = lp_build_fract(coord_bld, coord);
- coord0 = lp_build_ifloor(coord_bld, coord);
+
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
}
break;
/**
* Build LLVM code for texture wrap mode for nearest filtering.
* \param coord the incoming texcoord (nominally in [0,1])
- * \param length the texture size along one dimension, as int
+ * \param length the texture size along one dimension, as int vector
+ * \param length_f the texture size along one dimension, as float vector
+ * \param offset texel offset along one dimension (as int vector)
* \param is_pot if TRUE, length is a power of two
* \param wrap_mode one of PIPE_TEX_WRAP_x
*/
lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld,
LLVMValueRef coord,
LLVMValueRef length,
+ LLVMValueRef length_f,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode)
{
struct lp_build_context *coord_bld = &bld->coord_bld;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
- struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
- LLVMValueRef two = lp_build_const_vec(coord_bld->type, 2.0);
- LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
- LLVMValueRef length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
- LLVMValueRef length_f_minus_one = lp_build_sub(coord_bld, length_f, coord_bld->one);
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
LLVMValueRef icoord;
switch(wrap_mode) {
case PIPE_TEX_WRAP_REPEAT:
- coord = lp_build_mul(coord_bld, coord, length_f);
- icoord = lp_build_ifloor(coord_bld, coord);
- if (is_pot)
- icoord = LLVMBuildAnd(bld->builder, icoord, length_minus_one, "");
- else
- /* Signed remainder won't give the right results for negative
- * dividends but unsigned remainder does.*/
- icoord = LLVMBuildURem(bld->builder, icoord, length, "");
+ if (is_pot) {
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ if (offset) {
+ icoord = lp_build_add(int_coord_bld, icoord, offset);
+ }
+ icoord = LLVMBuildAnd(builder, icoord, length_minus_one, "");
+ }
+ else {
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ /* take fraction, unnormalize */
+ coord = lp_build_fract_safe(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ icoord = lp_build_itrunc(coord_bld, coord);
+ }
break;
case PIPE_TEX_WRAP_CLAMP:
- /* mul by size */
- if (bld->static_state->normalized_coords) {
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+
/* floor */
- icoord = lp_build_ifloor(coord_bld, coord);
- /* clamp to [0, size-1]. Note: int coord builder type */
+ /* use itrunc instead since we clamp to 0 anyway */
+ icoord = lp_build_itrunc(coord_bld, coord);
+ if (offset) {
+ icoord = lp_build_add(int_coord_bld, icoord, offset);
+ }
+
+ /* clamp to [0, length - 1]. */
icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero,
length_minus_one);
break;
- case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- {
- LLVMValueRef min, max;
- if (bld->static_state->normalized_coords) {
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- /* max = length - min */
- max = lp_build_sub(coord_bld, length_f, min);
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
- }
- else {
- /* clamp to [0.5, length - 0.5] */
- min = lp_build_const_vec(coord_bld->type, 0.5F);
- max = lp_build_sub(coord_bld, length_f, min);
- }
- /* coord = clamp(coord, min, max) */
- coord = lp_build_clamp(coord_bld, coord, min, max);
- icoord = lp_build_ifloor(coord_bld, coord);
- }
- break;
-
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- /* Note: this is the same as CLAMP_TO_EDGE, except min = -min */
- {
- LLVMValueRef min, max;
- if (bld->static_state->normalized_coords) {
- /* min = -1.0 / (2 * length) = -0.5 / length */
- min = lp_build_mul(coord_bld,
- lp_build_const_vec(coord_bld->type, -0.5F),
- lp_build_rcp(coord_bld, length_f));
- /* max = length - min */
- max = lp_build_sub(coord_bld, length_f, min);
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
- }
- else {
- /* clamp to [-0.5, length + 0.5] */
- min = lp_build_const_vec(coord_bld->type, -0.5F);
- max = lp_build_sub(coord_bld, length_f, min);
- }
- /* coord = clamp(coord, min, max) */
- coord = lp_build_clamp(coord_bld, coord, min, max);
- icoord = lp_build_ifloor(coord_bld, coord);
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ }
+ /* no clamp necessary, border masking will handle this */
+ icoord = lp_build_ifloor(coord_bld, coord);
+ if (offset) {
+ icoord = lp_build_add(int_coord_bld, icoord, offset);
}
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
- {
- LLVMValueRef min, max;
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- /* max = length - min */
- max = lp_build_sub(coord_bld, length_f, min);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ /* compute mirror function */
+ coord = lp_build_coord_mirror(bld, coord);
- /* compute mirror function */
- coord = lp_build_coord_mirror(bld, coord);
+ /* scale coord to length */
+ assert(bld->static_sampler_state->normalized_coords);
+ coord = lp_build_mul(coord_bld, coord, length_f);
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
+ /* itrunc == ifloor here */
+ icoord = lp_build_itrunc(coord_bld, coord);
- /* coord = clamp(coord, min, max) */
- coord = lp_build_clamp(coord_bld, coord, min, max);
- icoord = lp_build_ifloor(coord_bld, coord);
- }
+ /* clamp to [0, length - 1] */
+ icoord = lp_build_min(int_coord_bld, icoord, length_minus_one);
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
- coord = lp_build_abs(coord_bld, coord);
- coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f_minus_one);
- icoord = lp_build_ifloor(coord_bld, coord);
- break;
-
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
- {
- LLVMValueRef min, max;
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- /* max = length - min */
- max = lp_build_sub(coord_bld, length_f, min);
-
- coord = lp_build_abs(coord_bld, coord);
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- icoord = lp_build_ifloor(coord_bld, coord);
}
- break;
-
- case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
- {
- LLVMValueRef min, max;
- /* min = 1.0 / (2 * length) */
- min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
- min = lp_build_negate(coord_bld, min);
- /* max = length - min */
- max = lp_build_sub(coord_bld, length_f, min);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
- coord = lp_build_abs(coord_bld, coord);
+ /* itrunc == ifloor here */
+ icoord = lp_build_itrunc(coord_bld, coord);
+
+ /* clamp to [0, length - 1] */
+ icoord = lp_build_min(int_coord_bld, icoord, length_minus_one);
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_clamp(coord_bld, coord, min, max);
- icoord = lp_build_ifloor(coord_bld, coord);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
+
+ /* itrunc == ifloor here */
+ icoord = lp_build_itrunc(coord_bld, coord);
break;
default:
/**
- * Codegen equivalent for u_minify().
- * Return max(1, base_size >> level);
+ * Do shadow test/comparison.
+ * \param p shadow ref value
+ * \param texel the texel to compare against
*/
static LLVMValueRef
-lp_build_minify(struct lp_build_sample_context *bld,
- LLVMValueRef base_size,
- LLVMValueRef level)
+lp_build_sample_comparefunc(struct lp_build_sample_context *bld,
+ LLVMValueRef p,
+ LLVMValueRef texel)
{
- LLVMValueRef size = LLVMBuildAShr(bld->builder, base_size, level, "minify");
- size = lp_build_max(&bld->int_coord_bld, size, bld->int_coord_bld.one);
- return size;
-}
-
+ struct lp_build_context *texel_bld = &bld->texel_bld;
+ LLVMValueRef res;
-/**
- * Generate code to compute texture level of detail (lambda).
- * \param s vector of texcoord s values
- * \param t vector of texcoord t values
- * \param r vector of texcoord r values
- * \param width scalar int texture width
- * \param height scalar int texture height
- * \param depth scalar int texture depth
- */
-static LLVMValueRef
-lp_build_lod_selector(struct lp_build_sample_context *bld,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef width,
- LLVMValueRef height,
- LLVMValueRef depth)
+ if (0) {
+ //lp_build_print_value(bld->gallivm, "shadow cmp coord", p);
+ lp_build_print_value(bld->gallivm, "shadow cmp texel", texel);
+ }
-{
- if (bld->static_state->min_lod == bld->static_state->max_lod) {
- /* User is forcing sampling from a particular mipmap level.
- * This is hit during mipmap generation.
- */
- return LLVMConstReal(LLVMFloatType(), bld->static_state->min_lod);
+ /* result = (p FUNC texel) ? 1 : 0 */
+ /*
+ * honor d3d10 floating point rules here, which state that comparisons
+ * are ordered except NOT_EQUAL which is unordered.
+ */
+ if (bld->static_sampler_state->compare_func != PIPE_FUNC_NOTEQUAL) {
+ res = lp_build_cmp_ordered(texel_bld, bld->static_sampler_state->compare_func,
+ p, texel);
}
else {
- const int dims = texture_dims(bld->static_state->target);
- struct lp_build_context *float_bld = &bld->float_bld;
- LLVMValueRef lod_bias = LLVMConstReal(LLVMFloatType(),
- bld->static_state->lod_bias);
- LLVMValueRef min_lod = LLVMConstReal(LLVMFloatType(),
- bld->static_state->min_lod);
- LLVMValueRef max_lod = LLVMConstReal(LLVMFloatType(),
- bld->static_state->max_lod);
-
- LLVMValueRef index0 = LLVMConstInt(LLVMInt32Type(), 0, 0);
- LLVMValueRef index1 = LLVMConstInt(LLVMInt32Type(), 1, 0);
- LLVMValueRef index2 = LLVMConstInt(LLVMInt32Type(), 2, 0);
-
- LLVMValueRef s0, s1, s2;
- LLVMValueRef t0, t1, t2;
- LLVMValueRef r0, r1, r2;
- LLVMValueRef dsdx, dsdy, dtdx, dtdy, drdx, drdy;
- LLVMValueRef rho, lod;
-
- /*
- * dsdx = abs(s[1] - s[0]);
- * dsdy = abs(s[2] - s[0]);
- * dtdx = abs(t[1] - t[0]);
- * dtdy = abs(t[2] - t[0]);
- * drdx = abs(r[1] - r[0]);
- * drdy = abs(r[2] - r[0]);
- * XXX we're assuming a four-element quad in 2x2 layout here.
- */
- s0 = LLVMBuildExtractElement(bld->builder, s, index0, "s0");
- s1 = LLVMBuildExtractElement(bld->builder, s, index1, "s1");
- s2 = LLVMBuildExtractElement(bld->builder, s, index2, "s2");
- dsdx = LLVMBuildSub(bld->builder, s1, s0, "");
- dsdx = lp_build_abs(float_bld, dsdx);
- dsdy = LLVMBuildSub(bld->builder, s2, s0, "");
- dsdy = lp_build_abs(float_bld, dsdy);
- if (dims > 1) {
- t0 = LLVMBuildExtractElement(bld->builder, t, index0, "t0");
- t1 = LLVMBuildExtractElement(bld->builder, t, index1, "t1");
- t2 = LLVMBuildExtractElement(bld->builder, t, index2, "t2");
- dtdx = LLVMBuildSub(bld->builder, t1, t0, "");
- dtdx = lp_build_abs(float_bld, dtdx);
- dtdy = LLVMBuildSub(bld->builder, t2, t0, "");
- dtdy = lp_build_abs(float_bld, dtdy);
- if (dims > 2) {
- r0 = LLVMBuildExtractElement(bld->builder, r, index0, "r0");
- r1 = LLVMBuildExtractElement(bld->builder, r, index1, "r1");
- r2 = LLVMBuildExtractElement(bld->builder, r, index2, "r2");
- drdx = LLVMBuildSub(bld->builder, r1, r0, "");
- drdx = lp_build_abs(float_bld, drdx);
- drdy = LLVMBuildSub(bld->builder, r2, r0, "");
- drdy = lp_build_abs(float_bld, drdy);
- }
- }
-
- /* Compute rho = max of all partial derivatives scaled by texture size.
- * XXX this could be vectorized somewhat
- */
- rho = LLVMBuildMul(bld->builder,
- lp_build_max(float_bld, dsdx, dsdy),
- lp_build_int_to_float(float_bld, width), "");
- if (dims > 1) {
- LLVMValueRef max;
- max = LLVMBuildMul(bld->builder,
- lp_build_max(float_bld, dtdx, dtdy),
- lp_build_int_to_float(float_bld, height), "");
- rho = lp_build_max(float_bld, rho, max);
- if (dims > 2) {
- max = LLVMBuildMul(bld->builder,
- lp_build_max(float_bld, drdx, drdy),
- lp_build_int_to_float(float_bld, depth), "");
- rho = lp_build_max(float_bld, rho, max);
- }
- }
-
- /* compute lod = log2(rho) */
- lod = lp_build_log2(float_bld, rho);
-
- /* add lod bias */
- lod = LLVMBuildAdd(bld->builder, lod, lod_bias, "LOD bias");
-
- /* clamp lod */
- lod = lp_build_clamp(float_bld, lod, min_lod, max_lod);
-
- return lod;
+ res = lp_build_cmp(texel_bld, bld->static_sampler_state->compare_func,
+ p, texel);
}
-}
-
-
-/**
- * For PIPE_TEX_MIPFILTER_NEAREST, convert float LOD to integer
- * mipmap level index.
- * Note: this is all scalar code.
- * \param lod scalar float texture level of detail
- * \param level_out returns integer
- */
-static void
-lp_build_nearest_mip_level(struct lp_build_sample_context *bld,
- unsigned unit,
- LLVMValueRef lod,
- LLVMValueRef *level_out)
-{
- struct lp_build_context *float_bld = &bld->float_bld;
- struct lp_build_context *int_bld = &bld->int_bld;
- LLVMValueRef last_level, level;
-
- LLVMValueRef zero = LLVMConstInt(LLVMInt32Type(), 0, 0);
-
- last_level = bld->dynamic_state->last_level(bld->dynamic_state,
- bld->builder, unit);
-
- /* convert float lod to integer */
- level = lp_build_iround(float_bld, lod);
-
- /* clamp level to legal range of levels */
- *level_out = lp_build_clamp(int_bld, level, zero, last_level);
-}
-
-
-/**
- * For PIPE_TEX_MIPFILTER_LINEAR, convert float LOD to integer to
- * two (adjacent) mipmap level indexes. Later, we'll sample from those
- * two mipmap levels and interpolate between them.
- */
-static void
-lp_build_linear_mip_levels(struct lp_build_sample_context *bld,
- unsigned unit,
- LLVMValueRef lod,
- LLVMValueRef *level0_out,
- LLVMValueRef *level1_out,
- LLVMValueRef *weight_out)
-{
- struct lp_build_context *float_bld = &bld->float_bld;
- struct lp_build_context *int_bld = &bld->int_bld;
- LLVMValueRef last_level, level;
-
- last_level = bld->dynamic_state->last_level(bld->dynamic_state,
- bld->builder, unit);
-
- /* convert float lod to integer */
- level = lp_build_ifloor(float_bld, lod);
-
- /* compute level 0 and clamp to legal range of levels */
- *level0_out = lp_build_clamp(int_bld, level,
- int_bld->zero,
- last_level);
- /* compute level 1 and clamp to legal range of levels */
- *level1_out = lp_build_add(int_bld, *level0_out, int_bld->one);
- *level1_out = lp_build_min(int_bld, *level1_out, last_level);
-
- *weight_out = lp_build_fract(float_bld, lod);
+ return res;
}
*/
static void
lp_build_sample_image_nearest(struct lp_build_sample_context *bld,
- LLVMValueRef width_vec,
- LLVMValueRef height_vec,
- LLVMValueRef depth_vec,
+ LLVMValueRef size,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ LLVMValueRef mipoffsets,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
LLVMValueRef colors_out[4])
{
- const int dims = texture_dims(bld->static_state->target);
- LLVMValueRef x, y, z;
+ const unsigned dims = bld->dims;
+ LLVMValueRef width_vec;
+ LLVMValueRef height_vec;
+ LLVMValueRef depth_vec;
+ LLVMValueRef flt_size;
+ LLVMValueRef flt_width_vec;
+ LLVMValueRef flt_height_vec;
+ LLVMValueRef flt_depth_vec;
+ LLVMValueRef x, y = NULL, z = NULL;
+
+ lp_build_extract_image_sizes(bld,
+ &bld->int_size_bld,
+ bld->int_coord_type,
+ size,
+ &width_vec, &height_vec, &depth_vec);
+
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, size);
+
+ lp_build_extract_image_sizes(bld,
+ &bld->float_size_bld,
+ bld->coord_type,
+ flt_size,
+ &flt_width_vec, &flt_height_vec, &flt_depth_vec);
/*
* Compute integer texcoords.
*/
- x = lp_build_sample_wrap_nearest(bld, s, width_vec,
- bld->static_state->pot_width,
- bld->static_state->wrap_s);
+ x = lp_build_sample_wrap_nearest(bld, coords[0], width_vec,
+ flt_width_vec, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s);
lp_build_name(x, "tex.x.wrapped");
if (dims >= 2) {
- y = lp_build_sample_wrap_nearest(bld, t, height_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_t);
+ y = lp_build_sample_wrap_nearest(bld, coords[1], height_vec,
+ flt_height_vec, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t);
lp_build_name(y, "tex.y.wrapped");
if (dims == 3) {
- z = lp_build_sample_wrap_nearest(bld, r, depth_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_r);
+ z = lp_build_sample_wrap_nearest(bld, coords[2], depth_vec,
+ flt_depth_vec, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r);
lp_build_name(z, "tex.z.wrapped");
}
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- z = r;
- }
- else {
- z = NULL;
- }
}
- else {
- y = z = NULL;
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY ||
+ bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) {
+ z = coords[2];
+ lp_build_name(z, "tex.z.layer");
}
/*
* Get texture colors.
*/
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
x, y, z,
row_stride_vec, img_stride_vec,
- data_ptr, colors_out);
+ data_ptr, mipoffsets, colors_out);
+
+ if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) {
+ LLVMValueRef cmpval;
+ cmpval = lp_build_sample_comparefunc(bld, coords[4], colors_out[0]);
+ /* this is really just a AND 1.0, cmpval but llvm is clever enough */
+ colors_out[0] = lp_build_select(&bld->texel_bld, cmpval,
+ bld->texel_bld.one, bld->texel_bld.zero);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
+ }
+
+}
+
+
+/**
+ * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly.
+ */
+static LLVMValueRef
+lp_build_masklerp(struct lp_build_context *bld,
+ LLVMValueRef weight,
+ LLVMValueRef mask0,
+ LLVMValueRef mask1)
+{
+ struct gallivm_state *gallivm = bld->gallivm;
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMValueRef weight2;
+
+ weight2 = lp_build_sub(bld, bld->one, weight);
+ weight = LLVMBuildBitCast(builder, weight,
+ lp_build_int_vec_type(gallivm, bld->type), "");
+ weight2 = LLVMBuildBitCast(builder, weight2,
+ lp_build_int_vec_type(gallivm, bld->type), "");
+ weight = LLVMBuildAnd(builder, weight, mask1, "");
+ weight2 = LLVMBuildAnd(builder, weight2, mask0, "");
+ weight = LLVMBuildBitCast(builder, weight, bld->vec_type, "");
+ weight2 = LLVMBuildBitCast(builder, weight2, bld->vec_type, "");
+ return lp_build_add(bld, weight, weight2);
+}
+
+/**
+ * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly.
+ */
+static LLVMValueRef
+lp_build_masklerp2d(struct lp_build_context *bld,
+ LLVMValueRef weight0,
+ LLVMValueRef weight1,
+ LLVMValueRef mask00,
+ LLVMValueRef mask01,
+ LLVMValueRef mask10,
+ LLVMValueRef mask11)
+{
+ LLVMValueRef val0 = lp_build_masklerp(bld, weight0, mask00, mask01);
+ LLVMValueRef val1 = lp_build_masklerp(bld, weight0, mask10, mask11);
+ return lp_build_lerp(bld, weight1, val0, val1, 0);
}
+/*
+ * this is a bit excessive code for something OpenGL just recommends
+ * but does not require.
+ */
+#define ACCURATE_CUBE_CORNERS 1
/**
* Generate code to sample a mipmap level with linear filtering.
* If sampling a cube texture, r = cube face in [0,5].
+ * If linear_mask is present, only pixels having their mask set
+ * will receive linear filtering, the rest will use nearest.
*/
static void
lp_build_sample_image_linear(struct lp_build_sample_context *bld,
- LLVMValueRef width_vec,
- LLVMValueRef height_vec,
- LLVMValueRef depth_vec,
+ LLVMValueRef size,
+ LLVMValueRef linear_mask,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ LLVMValueRef mipoffsets,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
LLVMValueRef colors_out[4])
{
- const int dims = texture_dims(bld->static_state->target);
- LLVMValueRef x0, y0, z0, x1, y1, z1;
- LLVMValueRef s_fpart, t_fpart, r_fpart;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ struct lp_build_context *ivec_bld = &bld->int_coord_bld;
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ const unsigned dims = bld->dims;
+ LLVMValueRef width_vec;
+ LLVMValueRef height_vec;
+ LLVMValueRef depth_vec;
+ LLVMValueRef flt_size;
+ LLVMValueRef flt_width_vec;
+ LLVMValueRef flt_height_vec;
+ LLVMValueRef flt_depth_vec;
+ LLVMValueRef fall_off[4], have_corners;
+ LLVMValueRef z1 = NULL;
+ LLVMValueRef z00 = NULL, z01 = NULL, z10 = NULL, z11 = NULL;
+ LLVMValueRef x00 = NULL, x01 = NULL, x10 = NULL, x11 = NULL;
+ LLVMValueRef y00 = NULL, y01 = NULL, y10 = NULL, y11 = NULL;
+ LLVMValueRef s_fpart, t_fpart = NULL, r_fpart = NULL;
+ LLVMValueRef xs[4], ys[4], zs[4];
LLVMValueRef neighbors[2][2][4];
- int chan;
+ int chan, texel_index;
+ boolean seamless_cube_filter, accurate_cube_corners;
+
+ seamless_cube_filter = bld->static_texture_state->target == PIPE_TEXTURE_CUBE &&
+ bld->static_sampler_state->seamless_cube_map;
+ accurate_cube_corners = ACCURATE_CUBE_CORNERS && seamless_cube_filter;
+
+ lp_build_extract_image_sizes(bld,
+ &bld->int_size_bld,
+ bld->int_coord_type,
+ size,
+ &width_vec, &height_vec, &depth_vec);
+
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, size);
+
+ lp_build_extract_image_sizes(bld,
+ &bld->float_size_bld,
+ bld->coord_type,
+ flt_size,
+ &flt_width_vec, &flt_height_vec, &flt_depth_vec);
/*
* Compute integer texcoords.
*/
- lp_build_sample_wrap_linear(bld, s, width_vec,
- bld->static_state->pot_width,
- bld->static_state->wrap_s,
- &x0, &x1, &s_fpart);
- lp_build_name(x0, "tex.x0.wrapped");
- lp_build_name(x1, "tex.x1.wrapped");
- if (dims >= 2) {
- lp_build_sample_wrap_linear(bld, t, height_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_t,
- &y0, &y1, &t_fpart);
- lp_build_name(y0, "tex.y0.wrapped");
- lp_build_name(y1, "tex.y1.wrapped");
+ if (!seamless_cube_filter) {
+ lp_build_sample_wrap_linear(bld, coords[0], width_vec,
+ flt_width_vec, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s,
+ &x00, &x01, &s_fpart);
+ lp_build_name(x00, "tex.x0.wrapped");
+ lp_build_name(x01, "tex.x1.wrapped");
+ x10 = x00;
+ x11 = x01;
- if (dims == 3) {
- lp_build_sample_wrap_linear(bld, r, depth_vec,
- bld->static_state->pot_depth,
- bld->static_state->wrap_r,
- &z0, &z1, &r_fpart);
- lp_build_name(z0, "tex.z0.wrapped");
- lp_build_name(z1, "tex.z1.wrapped");
- }
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- z0 = z1 = r; /* cube face */
- r_fpart = NULL;
+ if (dims >= 2) {
+ lp_build_sample_wrap_linear(bld, coords[1], height_vec,
+ flt_height_vec, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t,
+ &y00, &y10, &t_fpart);
+ lp_build_name(y00, "tex.y0.wrapped");
+ lp_build_name(y10, "tex.y1.wrapped");
+ y01 = y00;
+ y11 = y10;
+
+ if (dims == 3) {
+ lp_build_sample_wrap_linear(bld, coords[2], depth_vec,
+ flt_depth_vec, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r,
+ &z00, &z1, &r_fpart);
+ z01 = z10 = z11 = z00;
+ lp_build_name(z00, "tex.z0.wrapped");
+ lp_build_name(z1, "tex.z1.wrapped");
+ }
}
- else {
- z0 = z1 = NULL;
- r_fpart = NULL;
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY ||
+ bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) {
+ z00 = z01 = z10 = z11 = z1 = coords[2]; /* cube face or layer */
+ lp_build_name(z00, "tex.z0.layer");
+ lp_build_name(z1, "tex.z1.layer");
}
}
else {
- y0 = y1 = t_fpart = NULL;
- z0 = z1 = r_fpart = NULL;
+ struct lp_build_if_state edge_if;
+ LLVMTypeRef int1t;
+ LLVMValueRef new_faces[4], new_xcoords[4][2], new_ycoords[4][2];
+ LLVMValueRef coord, have_edge, have_corner;
+ LLVMValueRef fall_off_ym_notxm, fall_off_ym_notxp, fall_off_x, fall_off_y;
+ LLVMValueRef fall_off_yp_notxm, fall_off_yp_notxp;
+ LLVMValueRef x0, x1, y0, y1, y0_clamped, y1_clamped;
+ LLVMValueRef face = coords[2];
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5f);
+ LLVMValueRef length_minus_one = lp_build_sub(ivec_bld, width_vec, ivec_bld->one);
+ /* XXX drop height calcs. Could (should) do this without seamless filtering too */
+ height_vec = width_vec;
+ flt_height_vec = flt_width_vec;
+
+ /* XXX the overflow logic is actually sort of duplicated with trilinear,
+ * since an overflow in one mip should also have a corresponding overflow
+ * in another.
+ */
+ /* should always have normalized coords, and offsets are undefined */
+ assert(bld->static_sampler_state->normalized_coords);
+ coord = lp_build_mul(coord_bld, coords[0], flt_width_vec);
+ /* instead of clamp, build mask if overflowed */
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* convert to int, compute lerp weight */
+ /* not ideal with AVX (and no AVX2) */
+ lp_build_ifloor_fract(coord_bld, coord, &x0, &s_fpart);
+ x1 = lp_build_add(ivec_bld, x0, ivec_bld->one);
+ coord = lp_build_mul(coord_bld, coords[1], flt_height_vec);
+ coord = lp_build_sub(coord_bld, coord, half);
+ lp_build_ifloor_fract(coord_bld, coord, &y0, &t_fpart);
+ y1 = lp_build_add(ivec_bld, y0, ivec_bld->one);
+
+ fall_off[0] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, x0, ivec_bld->zero);
+ fall_off[1] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, x1, length_minus_one);
+ fall_off[2] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, y0, ivec_bld->zero);
+ fall_off[3] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, y1, length_minus_one);
+
+ fall_off_x = lp_build_or(ivec_bld, fall_off[0], fall_off[1]);
+ fall_off_y = lp_build_or(ivec_bld, fall_off[2], fall_off[3]);
+ have_edge = lp_build_or(ivec_bld, fall_off_x, fall_off_y);
+ have_edge = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_edge);
+
+ /* needed for accurate corner filtering branch later, rely on 0 init */
+ int1t = LLVMInt1TypeInContext(bld->gallivm->context);
+ have_corners = lp_build_alloca(bld->gallivm, int1t, "have_corner");
+
+ for (texel_index = 0; texel_index < 4; texel_index++) {
+ xs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "xs");
+ ys[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "ys");
+ zs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "zs");
+ }
+
+ lp_build_if(&edge_if, bld->gallivm, have_edge);
+
+ have_corner = lp_build_and(ivec_bld, fall_off_x, fall_off_y);
+ have_corner = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_corner);
+ LLVMBuildStore(builder, have_corner, have_corners);
+
+ /*
+ * Need to feed clamped values here for cheap corner handling,
+ * but only for y coord (as when falling off both edges we only
+ * fall off the x one) - this should be sufficient.
+ */
+ y0_clamped = lp_build_max(ivec_bld, y0, ivec_bld->zero);
+ y1_clamped = lp_build_min(ivec_bld, y1, length_minus_one);
+
+ /*
+ * Get all possible new coords.
+ */
+ lp_build_cube_new_coords(ivec_bld, face,
+ x0, x1, y0_clamped, y1_clamped,
+ length_minus_one,
+ new_faces, new_xcoords, new_ycoords);
+
+ /* handle fall off x-, x+ direction */
+ /* determine new coords, face (not both fall_off vars can be true at same time) */
+ x00 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][0], x0);
+ y00 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][0], y0_clamped);
+ x10 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][1], x0);
+ y10 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][1], y1_clamped);
+ x01 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][0], x1);
+ y01 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][0], y0_clamped);
+ x11 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][1], x1);
+ y11 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][1], y1_clamped);
+
+ z00 = z10 = lp_build_select(ivec_bld, fall_off[0], new_faces[0], face);
+ z01 = z11 = lp_build_select(ivec_bld, fall_off[1], new_faces[1], face);
+
+ /* handle fall off y-, y+ direction */
+ /*
+ * Cheap corner logic: just hack up things so a texel doesn't fall
+ * off both sides (which means filter weights will be wrong but we'll only
+ * use valid texels in the filter).
+ * This means however (y) coords must additionally be clamped (see above).
+ * This corner handling should be fully OpenGL (but not d3d10) compliant.
+ */
+ fall_off_ym_notxm = lp_build_andnot(ivec_bld, fall_off[2], fall_off[0]);
+ fall_off_ym_notxp = lp_build_andnot(ivec_bld, fall_off[2], fall_off[1]);
+ fall_off_yp_notxm = lp_build_andnot(ivec_bld, fall_off[3], fall_off[0]);
+ fall_off_yp_notxp = lp_build_andnot(ivec_bld, fall_off[3], fall_off[1]);
+
+ x00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_xcoords[2][0], x00);
+ y00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_ycoords[2][0], y00);
+ x01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_xcoords[2][1], x01);
+ y01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_ycoords[2][1], y01);
+ x10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_xcoords[3][0], x10);
+ y10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_ycoords[3][0], y10);
+ x11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_xcoords[3][1], x11);
+ y11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_ycoords[3][1], y11);
+
+ z00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_faces[2], z00);
+ z01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_faces[2], z01);
+ z10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_faces[3], z10);
+ z11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_faces[3], z11);
+
+ LLVMBuildStore(builder, x00, xs[0]);
+ LLVMBuildStore(builder, x01, xs[1]);
+ LLVMBuildStore(builder, x10, xs[2]);
+ LLVMBuildStore(builder, x11, xs[3]);
+ LLVMBuildStore(builder, y00, ys[0]);
+ LLVMBuildStore(builder, y01, ys[1]);
+ LLVMBuildStore(builder, y10, ys[2]);
+ LLVMBuildStore(builder, y11, ys[3]);
+ LLVMBuildStore(builder, z00, zs[0]);
+ LLVMBuildStore(builder, z01, zs[1]);
+ LLVMBuildStore(builder, z10, zs[2]);
+ LLVMBuildStore(builder, z11, zs[3]);
+
+ lp_build_else(&edge_if);
+
+ LLVMBuildStore(builder, x0, xs[0]);
+ LLVMBuildStore(builder, x1, xs[1]);
+ LLVMBuildStore(builder, x0, xs[2]);
+ LLVMBuildStore(builder, x1, xs[3]);
+ LLVMBuildStore(builder, y0, ys[0]);
+ LLVMBuildStore(builder, y0, ys[1]);
+ LLVMBuildStore(builder, y1, ys[2]);
+ LLVMBuildStore(builder, y1, ys[3]);
+ LLVMBuildStore(builder, face, zs[0]);
+ LLVMBuildStore(builder, face, zs[1]);
+ LLVMBuildStore(builder, face, zs[2]);
+ LLVMBuildStore(builder, face, zs[3]);
+
+ lp_build_endif(&edge_if);
+
+ x00 = LLVMBuildLoad(builder, xs[0], "");
+ x01 = LLVMBuildLoad(builder, xs[1], "");
+ x10 = LLVMBuildLoad(builder, xs[2], "");
+ x11 = LLVMBuildLoad(builder, xs[3], "");
+ y00 = LLVMBuildLoad(builder, ys[0], "");
+ y01 = LLVMBuildLoad(builder, ys[1], "");
+ y10 = LLVMBuildLoad(builder, ys[2], "");
+ y11 = LLVMBuildLoad(builder, ys[3], "");
+ z00 = LLVMBuildLoad(builder, zs[0], "");
+ z01 = LLVMBuildLoad(builder, zs[1], "");
+ z10 = LLVMBuildLoad(builder, zs[2], "");
+ z11 = LLVMBuildLoad(builder, zs[3], "");
+ }
+
+ if (linear_mask) {
+ /*
+ * Whack filter weights into place. Whatever texel had more weight is
+ * the one which should have been selected by nearest filtering hence
+ * just use 100% weight for it.
+ */
+ struct lp_build_context *c_bld = &bld->coord_bld;
+ LLVMValueRef w1_mask, w1_weight;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, c_bld->type, 0.5f);
+
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, s_fpart, half);
+ /* this select is really just a "and" */
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ s_fpart = lp_build_select(c_bld, linear_mask, s_fpart, w1_weight);
+ if (dims >= 2) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, t_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ t_fpart = lp_build_select(c_bld, linear_mask, t_fpart, w1_weight);
+ if (dims == 3) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, r_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ r_fpart = lp_build_select(c_bld, linear_mask, r_fpart, w1_weight);
+ }
+ }
}
/*
* Get texture colors.
*/
/* get x0/x1 texels */
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x0, y0, z0,
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x00, y00, z00,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[0][0]);
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x1, y0, z0,
+ data_ptr, mipoffsets, neighbors[0][0]);
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x01, y01, z01,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[0][1]);
+ data_ptr, mipoffsets, neighbors[0][1]);
if (dims == 1) {
- /* Interpolate two samples from 1D image to produce one color */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = lp_build_lerp(&bld->texel_bld, s_fpart,
- neighbors[0][0][chan],
- neighbors[0][1][chan]);
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ /* Interpolate two samples from 1D image to produce one color */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_lerp(&bld->texel_bld, s_fpart,
+ neighbors[0][0][chan],
+ neighbors[0][1][chan],
+ 0);
+ }
+ }
+ else {
+ LLVMValueRef cmpval0, cmpval1;
+ cmpval0 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval1 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ /* simplified lerp, AND mask with weight and add */
+ colors_out[0] = lp_build_masklerp(&bld->texel_bld, s_fpart,
+ cmpval0, cmpval1);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
}
}
else {
/* 2D/3D texture */
- LLVMValueRef colors0[4];
+ struct lp_build_if_state corner_if;
+ LLVMValueRef colors0[4], colorss[4];
/* get x0/x1 texels at y1 */
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x0, y1, z0,
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x10, y10, z10,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[1][0]);
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x1, y1, z0,
+ data_ptr, mipoffsets, neighbors[1][0]);
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x11, y11, z11,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[1][1]);
+ data_ptr, mipoffsets, neighbors[1][1]);
- /* Bilinear interpolate the four samples from the 2D image / 3D slice */
- for (chan = 0; chan < 4; chan++) {
- colors0[chan] = lp_build_lerp_2d(&bld->texel_bld,
- s_fpart, t_fpart,
- neighbors[0][0][chan],
- neighbors[0][1][chan],
- neighbors[1][0][chan],
- neighbors[1][1][chan]);
+ /*
+ * To avoid having to duplicate linear_mask / fetch code use
+ * another branch (with corner condition though edge would work
+ * as well) here.
+ */
+ if (accurate_cube_corners) {
+ LLVMValueRef w00, w01, w10, w11, wx0, wy0;
+ LLVMValueRef c_weight, c00, c01, c10, c11;
+ LLVMValueRef have_corner, one_third, tmp;
+
+ colorss[0] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[1] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[2] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[3] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+
+ have_corner = LLVMBuildLoad(builder, have_corners, "");
+
+ lp_build_if(&corner_if, bld->gallivm, have_corner);
+
+ /*
+ * we can't use standard 2d lerp as we need per-element weight
+ * in case of corners, so just calculate bilinear result as
+ * w00*s00 + w01*s01 + w10*s10 + w11*s11.
+ * (This is actually less work than using 2d lerp, 7 vs. 9 instructions,
+ * however calculating the weights needs another 6, so actually probably
+ * not slower than 2d lerp only for 4 channels as weights only need
+ * to be calculated once - of course fixing the weights has additional cost.)
+ */
+ wx0 = lp_build_sub(coord_bld, coord_bld->one, s_fpart);
+ wy0 = lp_build_sub(coord_bld, coord_bld->one, t_fpart);
+ w00 = lp_build_mul(coord_bld, wx0, wy0);
+ w01 = lp_build_mul(coord_bld, s_fpart, wy0);
+ w10 = lp_build_mul(coord_bld, wx0, t_fpart);
+ w11 = lp_build_mul(coord_bld, s_fpart, t_fpart);
+
+ /* find corner weight */
+ c00 = lp_build_and(ivec_bld, fall_off[0], fall_off[2]);
+ c_weight = lp_build_select(coord_bld, c00, w00, coord_bld->zero);
+ c01 = lp_build_and(ivec_bld, fall_off[1], fall_off[2]);
+ c_weight = lp_build_select(coord_bld, c01, w01, c_weight);
+ c10 = lp_build_and(ivec_bld, fall_off[0], fall_off[3]);
+ c_weight = lp_build_select(coord_bld, c10, w10, c_weight);
+ c11 = lp_build_and(ivec_bld, fall_off[1], fall_off[3]);
+ c_weight = lp_build_select(coord_bld, c11, w11, c_weight);
+
+ /*
+ * add 1/3 of the corner weight to each of the 3 other samples
+ * and null out corner weight
+ */
+ one_third = lp_build_const_vec(bld->gallivm, coord_bld->type, 1.0f/3.0f);
+ c_weight = lp_build_mul(coord_bld, c_weight, one_third);
+ w00 = lp_build_add(coord_bld, w00, c_weight);
+ c00 = LLVMBuildBitCast(builder, c00, coord_bld->vec_type, "");
+ w00 = lp_build_andnot(coord_bld, w00, c00);
+ w01 = lp_build_add(coord_bld, w01, c_weight);
+ c01 = LLVMBuildBitCast(builder, c01, coord_bld->vec_type, "");
+ w01 = lp_build_andnot(coord_bld, w01, c01);
+ w10 = lp_build_add(coord_bld, w10, c_weight);
+ c10 = LLVMBuildBitCast(builder, c10, coord_bld->vec_type, "");
+ w10 = lp_build_andnot(coord_bld, w10, c10);
+ w11 = lp_build_add(coord_bld, w11, c_weight);
+ c11 = LLVMBuildBitCast(builder, c11, coord_bld->vec_type, "");
+ w11 = lp_build_andnot(coord_bld, w11, c11);
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_mul(coord_bld, w00, neighbors[0][0][chan]);
+ tmp = lp_build_mul(coord_bld, w01, neighbors[0][1][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ tmp = lp_build_mul(coord_bld, w10, neighbors[1][0][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ tmp = lp_build_mul(coord_bld, w11, neighbors[1][1][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ }
+ }
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+ /* inputs to interpolation are just masks so just add masked weights together */
+ cmpval00 = LLVMBuildBitCast(builder, cmpval00, coord_bld->vec_type, "");
+ cmpval01 = LLVMBuildBitCast(builder, cmpval01, coord_bld->vec_type, "");
+ cmpval10 = LLVMBuildBitCast(builder, cmpval10, coord_bld->vec_type, "");
+ cmpval11 = LLVMBuildBitCast(builder, cmpval11, coord_bld->vec_type, "");
+ colors0[0] = lp_build_and(coord_bld, w00, cmpval00);
+ tmp = lp_build_and(coord_bld, w01, cmpval01);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ tmp = lp_build_and(coord_bld, w10, cmpval10);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ tmp = lp_build_and(coord_bld, w11, cmpval11);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ colors0[1] = colors0[2] = colors0[3] = colors0[0];
+ }
+
+ LLVMBuildStore(builder, colors0[0], colorss[0]);
+ LLVMBuildStore(builder, colors0[1], colorss[1]);
+ LLVMBuildStore(builder, colors0[2], colorss[2]);
+ LLVMBuildStore(builder, colors0[3], colorss[3]);
+
+ lp_build_else(&corner_if);
+ }
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ /* Bilinear interpolate the four samples from the 2D image / 3D slice */
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_lerp_2d(&bld->texel_bld,
+ s_fpart, t_fpart,
+ neighbors[0][0][chan],
+ neighbors[0][1][chan],
+ neighbors[1][0][chan],
+ neighbors[1][1][chan],
+ 0);
+ }
+ }
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+ colors0[0] = lp_build_masklerp2d(&bld->texel_bld, s_fpart, t_fpart,
+ cmpval00, cmpval01, cmpval10, cmpval11);
+ colors0[1] = colors0[2] = colors0[3] = colors0[0];
+ }
+
+ if (accurate_cube_corners) {
+ LLVMBuildStore(builder, colors0[0], colorss[0]);
+ LLVMBuildStore(builder, colors0[1], colorss[1]);
+ LLVMBuildStore(builder, colors0[2], colorss[2]);
+ LLVMBuildStore(builder, colors0[3], colorss[3]);
+
+ lp_build_endif(&corner_if);
+
+ colors0[0] = LLVMBuildLoad(builder, colorss[0], "");
+ colors0[1] = LLVMBuildLoad(builder, colorss[1], "");
+ colors0[2] = LLVMBuildLoad(builder, colorss[2], "");
+ colors0[3] = LLVMBuildLoad(builder, colorss[3], "");
}
if (dims == 3) {
LLVMValueRef colors1[4];
/* get x0/x1/y0/y1 texels at z1 */
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x0, y0, z1,
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x00, y00, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[0][0]);
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x1, y0, z1,
+ data_ptr, mipoffsets, neighbors1[0][0]);
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x01, y01, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[0][1]);
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x0, y1, z1,
+ data_ptr, mipoffsets, neighbors1[0][1]);
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x10, y10, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[1][0]);
- lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec,
- x1, y1, z1,
+ data_ptr, mipoffsets, neighbors1[1][0]);
+ lp_build_sample_texel_soa(bld,
+ width_vec, height_vec, depth_vec,
+ x11, y11, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[1][1]);
-
- /* Bilinear interpolate the four samples from the second Z slice */
- for (chan = 0; chan < 4; chan++) {
- colors1[chan] = lp_build_lerp_2d(&bld->texel_bld,
- s_fpart, t_fpart,
- neighbors1[0][0][chan],
- neighbors1[0][1][chan],
- neighbors1[1][0][chan],
- neighbors1[1][1][chan]);
+ data_ptr, mipoffsets, neighbors1[1][1]);
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ /* Bilinear interpolate the four samples from the second Z slice */
+ for (chan = 0; chan < 4; chan++) {
+ colors1[chan] = lp_build_lerp_2d(&bld->texel_bld,
+ s_fpart, t_fpart,
+ neighbors1[0][0][chan],
+ neighbors1[0][1][chan],
+ neighbors1[1][0][chan],
+ neighbors1[1][1][chan],
+ 0);
+ }
+ /* Linearly interpolate the two samples from the two 3D slices */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_lerp(&bld->texel_bld,
+ r_fpart,
+ colors0[chan], colors1[chan],
+ 0);
+ }
}
-
- /* Linearly interpolate the two samples from the two 3D slices */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = lp_build_lerp(&bld->texel_bld,
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+ colors1[0] = lp_build_masklerp2d(&bld->texel_bld, s_fpart, t_fpart,
+ cmpval00, cmpval01, cmpval10, cmpval11);
+ /* Linearly interpolate the two samples from the two 3D slices */
+ colors_out[0] = lp_build_lerp(&bld->texel_bld,
r_fpart,
- colors0[chan], colors1[chan]);
+ colors0[0], colors1[0],
+ 0);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
}
}
else {
}
-/** Helper used by lp_build_cube_lookup() */
-static LLVMValueRef
-lp_build_cube_ima(struct lp_build_context *coord_bld, LLVMValueRef coord)
-{
- /* ima = -0.5 / abs(coord); */
- LLVMValueRef negHalf = lp_build_const_vec(coord_bld->type, -0.5);
- LLVMValueRef absCoord = lp_build_abs(coord_bld, coord);
- LLVMValueRef ima = lp_build_mul(coord_bld, negHalf,
- lp_build_rcp(coord_bld, absCoord));
- return ima;
-}
-
-
/**
- * Helper used by lp_build_cube_lookup()
- * \param sign scalar +1 or -1
- * \param coord float vector
- * \param ima float vector
+ * Sample the texture/mipmap using given image filter and mip filter.
+ * ilevel0 and ilevel1 indicate the two mipmap levels to sample
+ * from (vectors or scalars).
+ * If we're using nearest miplevel sampling the '1' values will be null/unused.
*/
-static LLVMValueRef
-lp_build_cube_coord(struct lp_build_context *coord_bld,
- LLVMValueRef sign, int negate_coord,
- LLVMValueRef coord, LLVMValueRef ima)
+static void
+lp_build_sample_mipmap(struct lp_build_sample_context *bld,
+ unsigned img_filter,
+ unsigned mip_filter,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef *colors_out)
{
- /* return negate(coord) * ima * sign + 0.5; */
- LLVMValueRef half = lp_build_const_vec(coord_bld->type, 0.5);
- LLVMValueRef res;
-
- assert(negate_coord == +1 || negate_coord == -1);
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef size0 = NULL;
+ LLVMValueRef size1 = NULL;
+ LLVMValueRef row_stride0_vec = NULL;
+ LLVMValueRef row_stride1_vec = NULL;
+ LLVMValueRef img_stride0_vec = NULL;
+ LLVMValueRef img_stride1_vec = NULL;
+ LLVMValueRef data_ptr0 = NULL;
+ LLVMValueRef data_ptr1 = NULL;
+ LLVMValueRef mipoff0 = NULL;
+ LLVMValueRef mipoff1 = NULL;
+ LLVMValueRef colors0[4], colors1[4];
+ unsigned chan;
- if (negate_coord == -1) {
- coord = lp_build_negate(coord_bld, coord);
+ /* sample the first mipmap level */
+ lp_build_mipmap_level_sizes(bld, ilevel0,
+ &size0,
+ &row_stride0_vec, &img_stride0_vec);
+ if (bld->num_mips == 1) {
+ data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
+ }
+ else {
+ /* This path should work for num_lods 1 too but slightly less efficient */
+ data_ptr0 = bld->base_ptr;
+ mipoff0 = lp_build_get_mip_offsets(bld, ilevel0);
+ }
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest(bld, size0,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, mipoff0, coords, offsets,
+ colors0);
+ }
+ else {
+ assert(img_filter == PIPE_TEX_FILTER_LINEAR);
+ lp_build_sample_image_linear(bld, size0, NULL,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, mipoff0, coords, offsets,
+ colors0);
}
- res = lp_build_mul(coord_bld, coord, ima);
- if (sign) {
- sign = lp_build_broadcast_scalar(coord_bld, sign);
- res = lp_build_mul(coord_bld, res, sign);
+ /* Store the first level's colors in the output variables */
+ for (chan = 0; chan < 4; chan++) {
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
}
- res = lp_build_add(coord_bld, res, half);
- return res;
-}
+ if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
+ struct lp_build_if_state if_ctx;
+ LLVMValueRef need_lerp;
+ /* need_lerp = lod_fpart > 0 */
+ if (bld->num_lods == 1) {
+ need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT,
+ lod_fpart, bld->lodf_bld.zero,
+ "need_lerp");
+ }
+ else {
+ /*
+ * We'll do mip filtering if any of the quads (or individual
+ * pixel in case of per-pixel lod) need it.
+ * It might be better to split the vectors here and only fetch/filter
+ * quads which need it (if there's one lod per quad).
+ */
+ need_lerp = lp_build_compare(bld->gallivm, bld->lodf_bld.type,
+ PIPE_FUNC_GREATER,
+ lod_fpart, bld->lodf_bld.zero);
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, need_lerp);
+ }
-/** Helper used by lp_build_cube_lookup()
- * Return (major_coord >= 0) ? pos_face : neg_face;
- */
-static LLVMValueRef
-lp_build_cube_face(struct lp_build_sample_context *bld,
- LLVMValueRef major_coord,
- unsigned pos_face, unsigned neg_face)
-{
- LLVMValueRef cmp = LLVMBuildFCmp(bld->builder, LLVMRealUGE,
- major_coord,
- bld->float_bld.zero, "");
- LLVMValueRef pos = LLVMConstInt(LLVMInt32Type(), pos_face, 0);
- LLVMValueRef neg = LLVMConstInt(LLVMInt32Type(), neg_face, 0);
- LLVMValueRef res = LLVMBuildSelect(bld->builder, cmp, pos, neg, "");
- return res;
-}
+ lp_build_if(&if_ctx, bld->gallivm, need_lerp);
+ {
+ /*
+ * We unfortunately need to clamp lod_fpart here since we can get
+ * negative values which would screw up filtering if not all
+ * lod_fpart values have same sign.
+ */
+ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart,
+ bld->lodf_bld.zero);
+ /* sample the second mipmap level */
+ lp_build_mipmap_level_sizes(bld, ilevel1,
+ &size1,
+ &row_stride1_vec, &img_stride1_vec);
+ if (bld->num_mips == 1) {
+ data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
+ }
+ else {
+ data_ptr1 = bld->base_ptr;
+ mipoff1 = lp_build_get_mip_offsets(bld, ilevel1);
+ }
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest(bld, size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, mipoff1, coords, offsets,
+ colors1);
+ }
+ else {
+ lp_build_sample_image_linear(bld, size1, NULL,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, mipoff1, coords, offsets,
+ colors1);
+ }
+ /* interpolate samples from the two mipmap levels */
+
+ if (bld->num_lods != bld->coord_type.length)
+ lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodf_bld.type,
+ bld->texel_bld.type,
+ lod_fpart);
+
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
+ colors0[chan], colors1[chan],
+ 0);
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
+ }
+ }
+ lp_build_endif(&if_ctx);
+ }
+}
/**
- * Generate code to do cube face selection and per-face texcoords.
+ * Sample the texture/mipmap using given mip filter, and using
+ * both nearest and linear filtering at the same time depending
+ * on linear_mask.
+ * lod can be per quad but linear_mask is always per pixel.
+ * ilevel0 and ilevel1 indicate the two mipmap levels to sample
+ * from (vectors or scalars).
+ * If we're using nearest miplevel sampling the '1' values will be null/unused.
*/
static void
-lp_build_cube_lookup(struct lp_build_sample_context *bld,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef *face,
- LLVMValueRef *face_s,
- LLVMValueRef *face_t)
+lp_build_sample_mipmap_both(struct lp_build_sample_context *bld,
+ LLVMValueRef linear_mask,
+ unsigned mip_filter,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef lod_positive,
+ LLVMValueRef *colors_out)
{
- struct lp_build_context *float_bld = &bld->float_bld;
- struct lp_build_context *coord_bld = &bld->coord_bld;
- LLVMValueRef rx, ry, rz;
- LLVMValueRef arx, ary, arz;
- LLVMValueRef c25 = LLVMConstReal(LLVMFloatType(), 0.25);
- LLVMValueRef arx_ge_ary, arx_ge_arz;
- LLVMValueRef ary_ge_arx, ary_ge_arz;
- LLVMValueRef arx_ge_ary_arz, ary_ge_arx_arz;
- LLVMValueRef rx_pos, ry_pos, rz_pos;
-
- assert(bld->coord_bld.type.length == 4);
-
- /*
- * Use the average of the four pixel's texcoords to choose the face.
- */
- rx = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, s));
- ry = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, t));
- rz = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, r));
-
- arx = lp_build_abs(float_bld, rx);
- ary = lp_build_abs(float_bld, ry);
- arz = lp_build_abs(float_bld, rz);
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef size0 = NULL;
+ LLVMValueRef size1 = NULL;
+ LLVMValueRef row_stride0_vec = NULL;
+ LLVMValueRef row_stride1_vec = NULL;
+ LLVMValueRef img_stride0_vec = NULL;
+ LLVMValueRef img_stride1_vec = NULL;
+ LLVMValueRef data_ptr0 = NULL;
+ LLVMValueRef data_ptr1 = NULL;
+ LLVMValueRef mipoff0 = NULL;
+ LLVMValueRef mipoff1 = NULL;
+ LLVMValueRef colors0[4], colors1[4];
+ unsigned chan;
- /*
- * Compare sign/magnitude of rx,ry,rz to determine face
- */
- arx_ge_ary = LLVMBuildFCmp(bld->builder, LLVMRealUGE, arx, ary, "");
- arx_ge_arz = LLVMBuildFCmp(bld->builder, LLVMRealUGE, arx, arz, "");
- ary_ge_arx = LLVMBuildFCmp(bld->builder, LLVMRealUGE, ary, arx, "");
- ary_ge_arz = LLVMBuildFCmp(bld->builder, LLVMRealUGE, ary, arz, "");
+ /* sample the first mipmap level */
+ lp_build_mipmap_level_sizes(bld, ilevel0,
+ &size0,
+ &row_stride0_vec, &img_stride0_vec);
+ if (bld->num_mips == 1) {
+ data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
+ }
+ else {
+ /* This path should work for num_lods 1 too but slightly less efficient */
+ data_ptr0 = bld->base_ptr;
+ mipoff0 = lp_build_get_mip_offsets(bld, ilevel0);
+ }
- arx_ge_ary_arz = LLVMBuildAnd(bld->builder, arx_ge_ary, arx_ge_arz, "");
- ary_ge_arx_arz = LLVMBuildAnd(bld->builder, ary_ge_arx, ary_ge_arz, "");
+ lp_build_sample_image_linear(bld, size0, linear_mask,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, mipoff0, coords, offsets,
+ colors0);
- rx_pos = LLVMBuildFCmp(bld->builder, LLVMRealUGE, rx, float_bld->zero, "");
- ry_pos = LLVMBuildFCmp(bld->builder, LLVMRealUGE, ry, float_bld->zero, "");
- rz_pos = LLVMBuildFCmp(bld->builder, LLVMRealUGE, rz, float_bld->zero, "");
+ /* Store the first level's colors in the output variables */
+ for (chan = 0; chan < 4; chan++) {
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
+ }
- {
- struct lp_build_flow_context *flow_ctx;
+ if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
struct lp_build_if_state if_ctx;
+ LLVMValueRef need_lerp;
- flow_ctx = lp_build_flow_create(bld->builder);
- lp_build_flow_scope_begin(flow_ctx);
-
- *face_s = bld->coord_bld.undef;
- *face_t = bld->coord_bld.undef;
- *face = bld->int_bld.undef;
-
- lp_build_name(*face_s, "face_s");
- lp_build_name(*face_t, "face_t");
- lp_build_name(*face, "face");
-
- lp_build_flow_scope_declare(flow_ctx, face_s);
- lp_build_flow_scope_declare(flow_ctx, face_t);
- lp_build_flow_scope_declare(flow_ctx, face);
+ /*
+ * We'll do mip filtering if any of the quads (or individual
+ * pixel in case of per-pixel lod) need it.
+ * Note using lod_positive here not lod_fpart since it may be the same
+ * condition as that used in the outer "if" in the caller hence llvm
+ * should be able to merge the branches in this case.
+ */
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, lod_positive);
- lp_build_if(&if_ctx, flow_ctx, bld->builder, arx_ge_ary_arz);
+ lp_build_if(&if_ctx, bld->gallivm, need_lerp);
{
- /* +/- X face */
- LLVMValueRef sign = lp_build_sgn(float_bld, rx);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, s);
- *face_s = lp_build_cube_coord(coord_bld, sign, +1, r, ima);
- *face_t = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
- *face = lp_build_cube_face(bld, rx,
- PIPE_TEX_FACE_POS_X,
- PIPE_TEX_FACE_NEG_X);
- }
- lp_build_else(&if_ctx);
- {
- struct lp_build_flow_context *flow_ctx2;
- struct lp_build_if_state if_ctx2;
+ /*
+ * We unfortunately need to clamp lod_fpart here since we can get
+ * negative values which would screw up filtering if not all
+ * lod_fpart values have same sign.
+ */
+ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart,
+ bld->lodf_bld.zero);
+ /* sample the second mipmap level */
+ lp_build_mipmap_level_sizes(bld, ilevel1,
+ &size1,
+ &row_stride1_vec, &img_stride1_vec);
+ if (bld->num_mips == 1) {
+ data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
+ }
+ else {
+ data_ptr1 = bld->base_ptr;
+ mipoff1 = lp_build_get_mip_offsets(bld, ilevel1);
+ }
- LLVMValueRef face_s2 = bld->coord_bld.undef;
- LLVMValueRef face_t2 = bld->coord_bld.undef;
- LLVMValueRef face2 = bld->int_bld.undef;
+ lp_build_sample_image_linear(bld, size1, linear_mask,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, mipoff1, coords, offsets,
+ colors1);
- flow_ctx2 = lp_build_flow_create(bld->builder);
- lp_build_flow_scope_begin(flow_ctx2);
- lp_build_flow_scope_declare(flow_ctx2, &face_s2);
- lp_build_flow_scope_declare(flow_ctx2, &face_t2);
- lp_build_flow_scope_declare(flow_ctx2, &face2);
+ /* interpolate samples from the two mipmap levels */
- ary_ge_arx_arz = LLVMBuildAnd(bld->builder, ary_ge_arx, ary_ge_arz, "");
+ if (bld->num_lods != bld->coord_type.length)
+ lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodf_bld.type,
+ bld->texel_bld.type,
+ lod_fpart);
- lp_build_if(&if_ctx2, flow_ctx2, bld->builder, ary_ge_arx_arz);
- {
- /* +/- Y face */
- LLVMValueRef sign = lp_build_sgn(float_bld, ry);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, t);
- face_s2 = lp_build_cube_coord(coord_bld, NULL, -1, s, ima);
- face_t2 = lp_build_cube_coord(coord_bld, sign, -1, r, ima);
- face2 = lp_build_cube_face(bld, ry,
- PIPE_TEX_FACE_POS_Y,
- PIPE_TEX_FACE_NEG_Y);
- }
- lp_build_else(&if_ctx2);
- {
- /* +/- Z face */
- LLVMValueRef sign = lp_build_sgn(float_bld, rz);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, r);
- face_s2 = lp_build_cube_coord(coord_bld, sign, -1, s, ima);
- face_t2 = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
- face2 = lp_build_cube_face(bld, rz,
- PIPE_TEX_FACE_POS_Z,
- PIPE_TEX_FACE_NEG_Z);
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
+ colors0[chan], colors1[chan],
+ 0);
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
}
- lp_build_endif(&if_ctx2);
- lp_build_flow_scope_end(flow_ctx2);
- lp_build_flow_destroy(flow_ctx2);
-
- *face_s = face_s2;
- *face_t = face_t2;
- *face = face2;
}
-
lp_build_endif(&if_ctx);
- lp_build_flow_scope_end(flow_ctx);
- lp_build_flow_destroy(flow_ctx);
}
}
-
/**
- * Sample the texture/mipmap using given image filter and mip filter.
- * data0_ptr and data1_ptr point to the two mipmap levels to sample
- * from. width0/1_vec, height0/1_vec, depth0/1_vec indicate their sizes.
- * If we're using nearest miplevel sampling the '1' values will be null/unused.
+ * Build (per-coord) layer value.
+ * Either clamp layer to valid values or fill in optional out_of_bounds
+ * value and just return value unclamped.
*/
-static void
-lp_build_sample_mipmap(struct lp_build_sample_context *bld,
- unsigned img_filter,
- unsigned mip_filter,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef lod_fpart,
- LLVMValueRef width0_vec,
- LLVMValueRef width1_vec,
- LLVMValueRef height0_vec,
- LLVMValueRef height1_vec,
- LLVMValueRef depth0_vec,
- LLVMValueRef depth1_vec,
- LLVMValueRef row_stride0_vec,
- LLVMValueRef row_stride1_vec,
- LLVMValueRef img_stride0_vec,
- LLVMValueRef img_stride1_vec,
- LLVMValueRef data_ptr0,
- LLVMValueRef data_ptr1,
- LLVMValueRef *colors_out)
+static LLVMValueRef
+lp_build_layer_coord(struct lp_build_sample_context *bld,
+ unsigned texture_unit,
+ LLVMValueRef layer,
+ LLVMValueRef *out_of_bounds)
{
- LLVMValueRef colors0[4], colors1[4];
- int chan;
+ LLVMValueRef num_layers;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
- if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld,
- width0_vec, height0_vec, depth0_vec,
- row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r, colors0);
+ num_layers = bld->dynamic_state->depth(bld->dynamic_state,
+ bld->gallivm, texture_unit);
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* sample the second mipmap level, and interp */
- lp_build_sample_image_nearest(bld,
- width1_vec, height1_vec, depth1_vec,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r, colors1);
- }
+ if (out_of_bounds) {
+ LLVMValueRef out1, out;
+ num_layers = lp_build_broadcast_scalar(int_coord_bld, num_layers);
+ out = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, layer, int_coord_bld->zero);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, layer, num_layers);
+ *out_of_bounds = lp_build_or(int_coord_bld, out, out1);
+ return layer;
}
else {
- assert(img_filter == PIPE_TEX_FILTER_LINEAR);
-
- lp_build_sample_image_linear(bld,
- width0_vec, height0_vec, depth0_vec,
- row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r, colors0);
-
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* sample the second mipmap level, and interp */
- lp_build_sample_image_linear(bld,
- width1_vec, height1_vec, depth1_vec,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r, colors1);
- }
- }
-
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* interpolate samples from the two mipmap levels */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
- colors0[chan], colors1[chan]);
- }
- }
- else {
- /* use first/only level's colors */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = colors0[chan];
- }
+ LLVMValueRef maxlayer;
+ maxlayer = lp_build_sub(&bld->int_bld, num_layers, bld->int_bld.one);
+ maxlayer = lp_build_broadcast_scalar(int_coord_bld, maxlayer);
+ return lp_build_clamp(int_coord_bld, layer, int_coord_bld->zero, maxlayer);
}
}
-
/**
- * General texture sampling codegen.
- * This function handles texture sampling for all texture targets (1D,
- * 2D, 3D, cube) and all filtering modes.
+ * Calculate cube face, lod, mip levels.
*/
static void
-lp_build_sample_general(struct lp_build_sample_context *bld,
- unsigned unit,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef width,
- LLVMValueRef height,
- LLVMValueRef depth,
- LLVMValueRef width_vec,
- LLVMValueRef height_vec,
- LLVMValueRef depth_vec,
- LLVMValueRef row_stride_array,
- LLVMValueRef img_stride_array,
- LLVMValueRef data_array,
- LLVMValueRef *colors_out)
+lp_build_sample_common(struct lp_build_sample_context *bld,
+ unsigned texture_index,
+ unsigned sampler_index,
+ LLVMValueRef *coords,
+ const struct lp_derivatives *derivs, /* optional */
+ LLVMValueRef lod_bias, /* optional */
+ LLVMValueRef explicit_lod, /* optional */
+ LLVMValueRef *lod_pos_or_zero,
+ LLVMValueRef *lod_fpart,
+ LLVMValueRef *ilevel0,
+ LLVMValueRef *ilevel1)
{
- struct lp_build_context *float_bld = &bld->float_bld;
- const unsigned mip_filter = bld->static_state->min_mip_filter;
- const unsigned min_filter = bld->static_state->min_img_filter;
- const unsigned mag_filter = bld->static_state->mag_img_filter;
- const int dims = texture_dims(bld->static_state->target);
- LLVMValueRef lod = NULL, lod_fpart = NULL;
- LLVMValueRef ilevel0, ilevel1 = NULL, ilevel0_vec, ilevel1_vec = NULL;
- LLVMValueRef width0_vec = NULL, height0_vec = NULL, depth0_vec = NULL;
- LLVMValueRef width1_vec = NULL, height1_vec = NULL, depth1_vec = NULL;
- LLVMValueRef row_stride0_vec = NULL, row_stride1_vec = NULL;
- LLVMValueRef img_stride0_vec = NULL, img_stride1_vec = NULL;
- LLVMValueRef data_ptr0, data_ptr1 = NULL;
+ const unsigned mip_filter = bld->static_sampler_state->min_mip_filter;
+ const unsigned min_filter = bld->static_sampler_state->min_img_filter;
+ const unsigned mag_filter = bld->static_sampler_state->mag_img_filter;
+ const unsigned target = bld->static_texture_state->target;
+ LLVMValueRef first_level, cube_rho = NULL;
+ LLVMValueRef lod_ipart = NULL;
+ struct lp_derivatives cube_derivs;
/*
printf("%s mip %d min %d mag %d\n", __FUNCTION__,
mip_filter, min_filter, mag_filter);
*/
+ /*
+ * Choose cube face, recompute texcoords for the chosen face and
+ * compute rho here too (as it requires transform of derivatives).
+ */
+ if (target == PIPE_TEXTURE_CUBE) {
+ boolean need_derivs;
+ need_derivs = ((min_filter != mag_filter ||
+ mip_filter != PIPE_TEX_MIPFILTER_NONE) &&
+ !bld->static_sampler_state->min_max_lod_equal &&
+ !explicit_lod);
+ lp_build_cube_lookup(bld, coords, derivs, &cube_rho, &cube_derivs, need_derivs);
+ derivs = &cube_derivs;
+ }
+ else if (target == PIPE_TEXTURE_1D_ARRAY ||
+ target == PIPE_TEXTURE_2D_ARRAY) {
+ coords[2] = lp_build_iround(&bld->coord_bld, coords[2]);
+ coords[2] = lp_build_layer_coord(bld, texture_index, coords[2], NULL);
+ }
+
+ if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) {
+ /*
+ * Clamp p coords to [0,1] for fixed function depth texture format here.
+ * Technically this is not entirely correct for unorm depth as the ref value
+ * should be converted to the depth format (quantization!) and comparison
+ * then done in texture format. This would actually help performance (since
+ * only need to do it once and could save the per-sample conversion of texels
+ * to floats instead), but it would need more messy code (would need to push
+ * at least some bits down to actual fetch so conversion could be skipped,
+ * and would have ugly interaction with border color, would need to convert
+ * border color to that format too or do some other tricks to make it work).
+ */
+ const struct util_format_description *format_desc = bld->format_desc;
+ unsigned chan_type;
+ /* not entirely sure we couldn't end up with non-valid swizzle here */
+ chan_type = format_desc->swizzle[0] <= UTIL_FORMAT_SWIZZLE_W ?
+ format_desc->channel[format_desc->swizzle[0]].type :
+ UTIL_FORMAT_TYPE_FLOAT;
+ if (chan_type != UTIL_FORMAT_TYPE_FLOAT) {
+ coords[4] = lp_build_clamp(&bld->coord_bld, coords[4],
+ bld->coord_bld.zero, bld->coord_bld.one);
+ }
+ }
+
/*
* Compute the level of detail (float).
*/
/* Need to compute lod either to choose mipmap levels or to
* distinguish between minification/magnification with one mipmap level.
*/
- lod = lp_build_lod_selector(bld, s, t, r, width, height, depth);
+ lp_build_lod_selector(bld, texture_index, sampler_index,
+ coords[0], coords[1], coords[2], cube_rho,
+ derivs, lod_bias, explicit_lod,
+ mip_filter,
+ &lod_ipart, lod_fpart, lod_pos_or_zero);
+ } else {
+ lod_ipart = bld->lodi_bld.zero;
+ *lod_pos_or_zero = bld->lodi_bld.zero;
+ }
+
+ if (bld->num_lods != bld->num_mips) {
+ /* only makes sense if there's just a single mip level */
+ assert(bld->num_mips == 1);
+ lod_ipart = lp_build_extract_range(bld->gallivm, lod_ipart, 0, 1);
}
/*
- * Compute integer mipmap level(s) to fetch texels from.
+ * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
*/
- if (mip_filter == PIPE_TEX_MIPFILTER_NONE) {
+ switch (mip_filter) {
+ default:
+ assert(0 && "bad mip_filter value in lp_build_sample_soa()");
+ /* fall-through */
+ case PIPE_TEX_MIPFILTER_NONE:
/* always use mip level 0 */
- ilevel0 = LLVMConstInt(LLVMInt32Type(), 0, 0);
- }
- else {
- if (mip_filter == PIPE_TEX_MIPFILTER_NEAREST) {
- lp_build_nearest_mip_level(bld, unit, lod, &ilevel0);
+ if (HAVE_LLVM == 0x0207 && target == PIPE_TEXTURE_CUBE) {
+ /* XXX this is a work-around for an apparent bug in LLVM 2.7.
+ * We should be able to set ilevel0 = const(0) but that causes
+ * bad x86 code to be emitted.
+ */
+ assert(lod_ipart);
+ lp_build_nearest_mip_level(bld, texture_index, lod_ipart, ilevel0, NULL);
}
else {
- assert(mip_filter == PIPE_TEX_MIPFILTER_LINEAR);
- lp_build_linear_mip_levels(bld, unit, lod, &ilevel0, &ilevel1,
- &lod_fpart);
- lod_fpart = lp_build_broadcast_scalar(&bld->coord_bld, lod_fpart);
+ first_level = bld->dynamic_state->first_level(bld->dynamic_state,
+ bld->gallivm, texture_index);
+ first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level);
+ *ilevel0 = first_level;
}
+ break;
+ case PIPE_TEX_MIPFILTER_NEAREST:
+ assert(lod_ipart);
+ lp_build_nearest_mip_level(bld, texture_index, lod_ipart, ilevel0, NULL);
+ break;
+ case PIPE_TEX_MIPFILTER_LINEAR:
+ assert(lod_ipart);
+ assert(*lod_fpart);
+ lp_build_linear_mip_levels(bld, texture_index,
+ lod_ipart, lod_fpart,
+ ilevel0, ilevel1);
+ break;
}
+}
+
+static void
+lp_build_clamp_border_color(struct lp_build_sample_context *bld,
+ unsigned sampler_unit)
+{
+ struct gallivm_state *gallivm = bld->gallivm;
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMValueRef border_color_ptr =
+ bld->dynamic_state->border_color(bld->dynamic_state,
+ gallivm, sampler_unit);
+ LLVMValueRef border_color;
+ const struct util_format_description *format_desc = bld->format_desc;
+ struct lp_type vec4_type = bld->texel_type;
+ struct lp_build_context vec4_bld;
+ LLVMValueRef min_clamp = NULL;
+ LLVMValueRef max_clamp = NULL;
/*
- * Convert scalar integer mipmap levels into vectors.
+ * For normalized format need to clamp border color (technically
+ * probably should also quantize the data). Really sucks doing this
+ * here but can't avoid at least for now since this is part of
+ * sampler state and texture format is part of sampler_view state.
+ * GL expects also expects clamping for uint/sint formats too so
+ * do that as well (d3d10 can't end up here with uint/sint since it
+ * only supports them with ld).
*/
- ilevel0_vec = lp_build_broadcast_scalar(&bld->int_coord_bld, ilevel0);
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
- ilevel1_vec = lp_build_broadcast_scalar(&bld->int_coord_bld, ilevel1);
+ vec4_type.length = 4;
+ lp_build_context_init(&vec4_bld, gallivm, vec4_type);
/*
- * Compute width, height at mipmap level 'ilevel0'
+ * Vectorized clamping of border color. Loading is a bit of a hack since
+ * we just cast the pointer to float array to pointer to vec4
+ * (int or float).
*/
- width0_vec = lp_build_minify(bld, width_vec, ilevel0_vec);
- if (dims >= 2) {
- height0_vec = lp_build_minify(bld, height_vec, ilevel0_vec);
- row_stride0_vec = lp_build_get_level_stride_vec(bld, row_stride_array,
- ilevel0);
- if (dims == 3 || bld->static_state->target == PIPE_TEXTURE_CUBE) {
- img_stride0_vec = lp_build_get_level_stride_vec(bld,
- img_stride_array,
- ilevel0);
- if (dims == 3) {
- depth0_vec = lp_build_minify(bld, depth_vec, ilevel0_vec);
+ border_color_ptr = lp_build_array_get_ptr(gallivm, border_color_ptr,
+ lp_build_const_int32(gallivm, 0));
+ border_color_ptr = LLVMBuildBitCast(builder, border_color_ptr,
+ LLVMPointerType(vec4_bld.vec_type, 0), "");
+ border_color = LLVMBuildLoad(builder, border_color_ptr, "");
+ /* we don't have aligned type in the dynamic state unfortunately */
+ lp_set_load_alignment(border_color, 4);
+
+ /*
+ * Instead of having some incredibly complex logic which will try to figure out
+ * clamping necessary for each channel, simply use the first channel, and treat
+ * mixed signed/unsigned normalized formats specially.
+ * (Mixed non-normalized, which wouldn't work at all here, do not exist for a
+ * good reason.)
+ */
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
+ int chan;
+ /* d/s needs special handling because both present means just sampling depth */
+ if (util_format_is_depth_and_stencil(format_desc->format)) {
+ chan = format_desc->swizzle[0];
+ }
+ else {
+ chan = util_format_get_first_non_void_channel(format_desc->format);
+ }
+ if (chan >= 0 && chan <= UTIL_FORMAT_SWIZZLE_W) {
+ unsigned chan_type = format_desc->channel[chan].type;
+ unsigned chan_norm = format_desc->channel[chan].normalized;
+ unsigned chan_pure = format_desc->channel[chan].pure_integer;
+ if (chan_type == UTIL_FORMAT_TYPE_SIGNED) {
+ if (chan_norm) {
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ }
+ else if (chan_pure) {
+ /*
+ * Border color was stored as int, hence need min/max clamp
+ * only if chan has less than 32 bits..
+ */
+ unsigned chan_size = format_desc->channel[chan].size;
+ if (chan_size < 32) {
+ min_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ 0 - (1 << (chan_size - 1)));
+ max_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ (1 << (chan_size - 1)) - 1);
+ }
+ }
+ /* TODO: no idea about non-pure, non-normalized! */
}
+ else if (chan_type == UTIL_FORMAT_TYPE_UNSIGNED) {
+ if (chan_norm) {
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ }
+ /*
+ * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24
+ * we use Z32_FLOAT_S8X24 to imply sampling depth component
+ * and ignoring stencil, which will blow up here if we try to
+ * do a uint clamp in a float texel build...
+ * And even if we had that format, mesa st also thinks using z24s8
+ * means depth sampling ignoring stencil.
+ */
+ else if (chan_pure) {
+ /*
+ * Border color was stored as uint, hence never need min
+ * clamp, and only need max clamp if chan has less than 32 bits.
+ */
+ unsigned chan_size = format_desc->channel[chan].size;
+ if (chan_size < 32) {
+ max_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ (1 << chan_size) - 1);
+ }
+ /* TODO: no idea about non-pure, non-normalized! */
+ }
+ }
+ else if (chan_type == UTIL_FORMAT_TYPE_FIXED) {
+ /* TODO: I have no idea what clamp this would need if any! */
+ }
+ }
+ /* mixed plain formats (or different pure size) */
+ switch (format_desc->format) {
+ case PIPE_FORMAT_B10G10R10A2_UINT:
+ case PIPE_FORMAT_R10G10B10A2_UINT:
+ {
+ unsigned max10 = (1 << 10) - 1;
+ max_clamp = lp_build_const_aos(gallivm, vec4_type, max10, max10,
+ max10, (1 << 2) - 1, NULL);
+ }
+ break;
+ case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
+ min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F,
+ -1.0F, 0.0F, NULL);
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
+ case PIPE_FORMAT_R5SG5SB6U_NORM:
+ min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F,
+ 0.0F, 0.0F, NULL);
+ max_clamp = vec4_bld.one;
+ break;
+ default:
+ break;
}
}
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* compute width, height, depth for second mipmap level at 'ilevel1' */
- width1_vec = lp_build_minify(bld, width_vec, ilevel1_vec);
- if (dims >= 2) {
- height1_vec = lp_build_minify(bld, height_vec, ilevel1_vec);
- row_stride1_vec = lp_build_get_level_stride_vec(bld, row_stride_array,
- ilevel1);
- if (dims == 3 || bld->static_state->target == PIPE_TEXTURE_CUBE) {
- img_stride1_vec = lp_build_get_level_stride_vec(bld,
- img_stride_array,
- ilevel1);
- if (dims ==3) {
- depth1_vec = lp_build_minify(bld, depth_vec, ilevel1_vec);
- }
+ else {
+ /* cannot figure this out from format description */
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+ /* s3tc formats are always unorm */
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ }
+ else if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC ||
+ format_desc->layout == UTIL_FORMAT_LAYOUT_ETC) {
+ switch (format_desc->format) {
+ case PIPE_FORMAT_RGTC1_UNORM:
+ case PIPE_FORMAT_RGTC2_UNORM:
+ case PIPE_FORMAT_LATC1_UNORM:
+ case PIPE_FORMAT_LATC2_UNORM:
+ case PIPE_FORMAT_ETC1_RGB8:
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_RGTC1_SNORM:
+ case PIPE_FORMAT_RGTC2_SNORM:
+ case PIPE_FORMAT_LATC1_SNORM:
+ case PIPE_FORMAT_LATC2_SNORM:
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ /*
+ * all others from subsampled/other group, though we don't care
+ * about yuv (and should not have any from zs here)
+ */
+ else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_YUV){
+ switch (format_desc->format) {
+ case PIPE_FORMAT_R8G8_B8G8_UNORM:
+ case PIPE_FORMAT_G8R8_G8B8_UNORM:
+ case PIPE_FORMAT_G8R8_B8R8_UNORM:
+ case PIPE_FORMAT_R8G8_R8B8_UNORM:
+ case PIPE_FORMAT_R1_UNORM: /* doesn't make sense but ah well */
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_R8G8Bx_SNORM:
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ break;
+ /*
+ * Note smallfloat formats usually don't need clamping
+ * (they still have infinite range) however this is not
+ * true for r11g11b10 and r9g9b9e5, which can't represent
+ * negative numbers (and additionally r9g9b9e5 can't represent
+ * very large numbers). d3d10 seems happy without clamping in
+ * this case, but gl spec is pretty clear: "for floating
+ * point and integer formats, border values are clamped to
+ * the representable range of the format" so do that here.
+ */
+ case PIPE_FORMAT_R11G11B10_FLOAT:
+ min_clamp = vec4_bld.zero;
+ break;
+ case PIPE_FORMAT_R9G9B9E5_FLOAT:
+ min_clamp = vec4_bld.zero;
+ max_clamp = lp_build_const_vec(gallivm, vec4_type, MAX_RGB9E5);
+ break;
+ default:
+ assert(0);
+ break;
}
}
}
- /*
- * Choose cube face, recompute per-face texcoords.
- */
- if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- LLVMValueRef face, face_s, face_t;
- lp_build_cube_lookup(bld, s, t, r, &face, &face_s, &face_t);
- s = face_s; /* vec */
- t = face_t; /* vec */
- /* use 'r' to indicate cube face */
- r = lp_build_broadcast_scalar(&bld->int_coord_bld, face); /* vec */
+ if (min_clamp) {
+ border_color = lp_build_max(&vec4_bld, border_color, min_clamp);
+ }
+ if (max_clamp) {
+ border_color = lp_build_min(&vec4_bld, border_color, max_clamp);
}
- /*
- * Get pointer(s) to image data for mipmap level(s).
- */
- data_ptr0 = lp_build_get_mipmap_level(bld, data_array, ilevel0);
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- data_ptr1 = lp_build_get_mipmap_level(bld, data_array, ilevel1);
+ bld->border_color_clamped = border_color;
+}
+
+
+/**
+ * General texture sampling codegen.
+ * This function handles texture sampling for all texture targets (1D,
+ * 2D, 3D, cube) and all filtering modes.
+ */
+static void
+lp_build_sample_general(struct lp_build_sample_context *bld,
+ unsigned sampler_unit,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef lod_positive,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef *colors_out)
+{
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ const struct lp_static_sampler_state *sampler_state = bld->static_sampler_state;
+ const unsigned mip_filter = sampler_state->min_mip_filter;
+ const unsigned min_filter = sampler_state->min_img_filter;
+ const unsigned mag_filter = sampler_state->mag_img_filter;
+ LLVMValueRef texels[4];
+ unsigned chan;
+
+ /* if we need border color, (potentially) clamp it now */
+ if (lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_s,
+ min_filter,
+ mag_filter) ||
+ (bld->dims > 1 &&
+ lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_t,
+ min_filter,
+ mag_filter)) ||
+ (bld->dims > 2 &&
+ lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_r,
+ min_filter,
+ mag_filter))) {
+ lp_build_clamp_border_color(bld, sampler_unit);
}
+
/*
* Get/interpolate texture colors.
*/
+
+ for (chan = 0; chan < 4; ++chan) {
+ texels[chan] = lp_build_alloca(bld->gallivm, bld->texel_bld.vec_type, "");
+ lp_build_name(texels[chan], "sampler%u_texel_%c_var", sampler_unit, "xyzw"[chan]);
+ }
+
if (min_filter == mag_filter) {
- /* no need to distinquish between minification and magnification */
- lp_build_sample_mipmap(bld, min_filter, mip_filter, s, t, r, lod_fpart,
- width0_vec, width1_vec,
- height0_vec, height1_vec,
- depth0_vec, depth1_vec,
- row_stride0_vec, row_stride1_vec,
- img_stride0_vec, img_stride1_vec,
- data_ptr0, data_ptr1,
- colors_out);
+ /* no need to distinguish between minification and magnification */
+ lp_build_sample_mipmap(bld, min_filter, mip_filter,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
}
else {
- /* Emit conditional to choose min image filter or mag image filter
- * depending on the lod being >0 or <= 0, respectively.
+ /*
+ * Could also get rid of the if-logic and always use mipmap_both, both
+ * for the single lod and multi-lod case if nothing really uses this.
*/
- struct lp_build_flow_context *flow_ctx;
- struct lp_build_if_state if_ctx;
- LLVMValueRef minify;
+ if (bld->num_lods == 1) {
+ /* Emit conditional to choose min image filter or mag image filter
+ * depending on the lod being > 0 or <= 0, respectively.
+ */
+ struct lp_build_if_state if_ctx;
- flow_ctx = lp_build_flow_create(bld->builder);
- lp_build_flow_scope_begin(flow_ctx);
+ lod_positive = LLVMBuildTrunc(builder, lod_positive,
+ LLVMInt1TypeInContext(bld->gallivm->context), "");
- lp_build_flow_scope_declare(flow_ctx, &colors_out[0]);
- lp_build_flow_scope_declare(flow_ctx, &colors_out[1]);
- lp_build_flow_scope_declare(flow_ctx, &colors_out[2]);
- lp_build_flow_scope_declare(flow_ctx, &colors_out[3]);
+ lp_build_if(&if_ctx, bld->gallivm, lod_positive);
+ {
+ /* Use the minification filter */
+ lp_build_sample_mipmap(bld, min_filter, mip_filter,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
+ }
+ lp_build_else(&if_ctx);
+ {
+ /* Use the magnification filter */
+ lp_build_sample_mipmap(bld, mag_filter, PIPE_TEX_MIPFILTER_NONE,
+ coords, offsets,
+ ilevel0, NULL, NULL,
+ texels);
+ }
+ lp_build_endif(&if_ctx);
+ }
+ else {
+ LLVMValueRef need_linear, linear_mask;
+ unsigned mip_filter_for_nearest;
+ struct lp_build_if_state if_ctx;
- /* minify = lod > 0.0 */
- minify = LLVMBuildFCmp(bld->builder, LLVMRealUGE,
- lod, float_bld->zero, "");
+ if (min_filter == PIPE_TEX_FILTER_LINEAR) {
+ linear_mask = lod_positive;
+ mip_filter_for_nearest = PIPE_TEX_MIPFILTER_NONE;
+ }
+ else {
+ linear_mask = lp_build_not(&bld->lodi_bld, lod_positive);
+ mip_filter_for_nearest = mip_filter;
+ }
+ need_linear = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods,
+ linear_mask);
+
+ if (bld->num_lods != bld->coord_type.length) {
+ linear_mask = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodi_type,
+ bld->int_coord_type,
+ linear_mask);
+ }
- lp_build_if(&if_ctx, flow_ctx, bld->builder, minify);
- {
- /* Use the minification filter */
- lp_build_sample_mipmap(bld, min_filter, mip_filter,
- s, t, r, lod_fpart,
- width0_vec, width1_vec,
- height0_vec, height1_vec,
- depth0_vec, depth1_vec,
- row_stride0_vec, row_stride1_vec,
- img_stride0_vec, img_stride1_vec,
- data_ptr0, data_ptr1,
- colors_out);
- }
- lp_build_else(&if_ctx);
- {
- /* Use the magnification filter */
- lp_build_sample_mipmap(bld, mag_filter, mip_filter,
- s, t, r, lod_fpart,
- width0_vec, width1_vec,
- height0_vec, height1_vec,
- depth0_vec, depth1_vec,
- row_stride0_vec, row_stride1_vec,
- img_stride0_vec, img_stride1_vec,
- data_ptr0, data_ptr1,
- colors_out);
+ lp_build_if(&if_ctx, bld->gallivm, need_linear);
+ {
+ /*
+ * Do sampling with both filters simultaneously. This means using
+ * a linear filter and doing some tricks (with weights) for the pixels
+ * which need nearest filter.
+ * Note that it's probably rare some pixels need nearest and some
+ * linear filter but the fixups required for the nearest pixels
+ * aren't all that complicated so just always run a combined path
+ * if at least some pixels require linear.
+ */
+ lp_build_sample_mipmap_both(bld, linear_mask, mip_filter,
+ coords, offsets,
+ ilevel0, ilevel1,
+ lod_fpart, lod_positive,
+ texels);
+ }
+ lp_build_else(&if_ctx);
+ {
+ /*
+ * All pixels require just nearest filtering, which is way
+ * cheaper than linear, hence do a separate path for that.
+ */
+ lp_build_sample_mipmap(bld, PIPE_TEX_FILTER_NEAREST,
+ mip_filter_for_nearest,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
+ }
+ lp_build_endif(&if_ctx);
}
- lp_build_endif(&if_ctx);
+ }
- lp_build_flow_scope_end(flow_ctx);
- lp_build_flow_destroy(flow_ctx);
+ for (chan = 0; chan < 4; ++chan) {
+ colors_out[chan] = LLVMBuildLoad(builder, texels[chan], "");
+ lp_build_name(colors_out[chan], "sampler%u_texel_%c", sampler_unit, "xyzw"[chan]);
}
}
-
+/**
+ * Texel fetch function.
+ * In contrast to general sampling there is no filtering, no coord minification,
+ * lod (if any) is always explicit uint, coords are uints (in terms of texel units)
+ * directly to be applied to the selected mip level (after adding texel offsets).
+ * This function handles texel fetch for all targets where texel fetch is supported
+ * (no cube maps, but 1d, 2d, 3d are supported, arrays and buffers should be too).
+ */
static void
-lp_build_rgba8_to_f32_soa(LLVMBuilderRef builder,
- struct lp_type dst_type,
- LLVMValueRef packed,
- LLVMValueRef *rgba)
+lp_build_fetch_texel(struct lp_build_sample_context *bld,
+ unsigned texture_unit,
+ const LLVMValueRef *coords,
+ LLVMValueRef explicit_lod,
+ const LLVMValueRef *offsets,
+ LLVMValueRef *colors_out)
{
- LLVMValueRef mask = lp_build_const_int_vec(dst_type, 0xff);
- unsigned chan;
+ struct lp_build_context *perquadi_bld = &bld->lodi_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ unsigned dims = bld->dims, chan;
+ unsigned target = bld->static_texture_state->target;
+ boolean out_of_bound_ret_zero = TRUE;
+ LLVMValueRef size, ilevel;
+ LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL;
+ LLVMValueRef x = coords[0], y = coords[1], z = coords[2];
+ LLVMValueRef width, height, depth, i, j;
+ LLVMValueRef offset, out_of_bounds, out1;
+
+ out_of_bounds = int_coord_bld->zero;
+
+ if (explicit_lod && bld->static_texture_state->target != PIPE_BUFFER) {
+ if (bld->num_mips != int_coord_bld->type.length) {
+ ilevel = lp_build_pack_aos_scalars(bld->gallivm, int_coord_bld->type,
+ perquadi_bld->type, explicit_lod, 0);
+ }
+ else {
+ ilevel = explicit_lod;
+ }
+ lp_build_nearest_mip_level(bld, texture_unit, ilevel, &ilevel,
+ out_of_bound_ret_zero ? &out_of_bounds : NULL);
+ }
+ else {
+ assert(bld->num_mips == 1);
+ if (bld->static_texture_state->target != PIPE_BUFFER) {
+ ilevel = bld->dynamic_state->first_level(bld->dynamic_state,
+ bld->gallivm, texture_unit);
+ }
+ else {
+ ilevel = lp_build_const_int32(bld->gallivm, 0);
+ }
+ }
+ lp_build_mipmap_level_sizes(bld, ilevel,
+ &size,
+ &row_stride_vec, &img_stride_vec);
+ lp_build_extract_image_sizes(bld, &bld->int_size_bld, int_coord_bld->type,
+ size, &width, &height, &depth);
+
+ if (target == PIPE_TEXTURE_1D_ARRAY ||
+ target == PIPE_TEXTURE_2D_ARRAY) {
+ if (out_of_bound_ret_zero) {
+ z = lp_build_layer_coord(bld, texture_unit, z, &out1);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ }
+ else {
+ z = lp_build_layer_coord(bld, texture_unit, z, NULL);
+ }
+ }
- /* Decode the input vector components */
- for (chan = 0; chan < 4; ++chan) {
- unsigned start = chan*8;
- unsigned stop = start + 8;
- LLVMValueRef input;
+ /* This is a lot like border sampling */
+ if (offsets[0]) {
+ /*
+ * coords are really unsigned, offsets are signed, but I don't think
+ * exceeding 31 bits is possible
+ */
+ x = lp_build_add(int_coord_bld, x, offsets[0]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
- input = packed;
+ if (dims >= 2) {
+ if (offsets[1]) {
+ y = lp_build_add(int_coord_bld, y, offsets[1]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+
+ if (dims >= 3) {
+ if (offsets[2]) {
+ z = lp_build_add(int_coord_bld, z, offsets[2]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ }
+ }
- if(start)
- input = LLVMBuildLShr(builder, input, lp_build_const_int_vec(dst_type, start), "");
+ lp_build_sample_offset(int_coord_bld,
+ bld->format_desc,
+ x, y, z, row_stride_vec, img_stride_vec,
+ &offset, &i, &j);
- if(stop < 32)
- input = LLVMBuildAnd(builder, input, mask, "");
+ if (bld->static_texture_state->target != PIPE_BUFFER) {
+ offset = lp_build_add(int_coord_bld, offset,
+ lp_build_get_mip_offsets(bld, ilevel));
+ }
+
+ offset = lp_build_andnot(int_coord_bld, offset, out_of_bounds);
- input = lp_build_unsigned_norm_to_float(builder, 8, dst_type, input);
+ lp_build_fetch_rgba_soa(bld->gallivm,
+ bld->format_desc,
+ bld->texel_type,
+ bld->base_ptr, offset,
+ i, j,
+ colors_out);
- rgba[chan] = input;
+ if (out_of_bound_ret_zero) {
+ /*
+ * Only needed for ARB_robust_buffer_access_behavior and d3d10.
+ * Could use min/max above instead of out-of-bounds comparisons
+ * if we don't care about the result returned for out-of-bounds.
+ */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_select(&bld->texel_bld, out_of_bounds,
+ bld->texel_bld.zero, colors_out[chan]);
+ }
}
}
-static void
-lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef width,
- LLVMValueRef height,
- LLVMValueRef stride_array,
- LLVMValueRef data_array,
- LLVMValueRef *texel)
+/**
+ * Just set texels to white instead of actually sampling the texture.
+ * For debugging.
+ */
+void
+lp_build_sample_nop(struct gallivm_state *gallivm,
+ struct lp_type type,
+ const LLVMValueRef *coords,
+ LLVMValueRef texel_out[4])
{
- LLVMBuilderRef builder = bld->builder;
- struct lp_build_context i32, h16, u8n;
- LLVMTypeRef i32_vec_type, h16_vec_type, u8n_vec_type;
- LLVMValueRef i32_c8, i32_c128, i32_c255;
- LLVMValueRef s_ipart, s_fpart, s_fpart_lo, s_fpart_hi;
- LLVMValueRef t_ipart, t_fpart, t_fpart_lo, t_fpart_hi;
- LLVMValueRef x0, x1;
- LLVMValueRef y0, y1;
- LLVMValueRef neighbors[2][2];
- LLVMValueRef neighbors_lo[2][2];
- LLVMValueRef neighbors_hi[2][2];
- LLVMValueRef packed, packed_lo, packed_hi;
- LLVMValueRef unswizzled[4];
- LLVMValueRef stride;
-
- lp_build_context_init(&i32, builder, lp_type_int_vec(32));
- lp_build_context_init(&h16, builder, lp_type_ufixed(16));
- lp_build_context_init(&u8n, builder, lp_type_unorm(8));
-
- i32_vec_type = lp_build_vec_type(i32.type);
- h16_vec_type = lp_build_vec_type(h16.type);
- u8n_vec_type = lp_build_vec_type(u8n.type);
-
- if (bld->static_state->normalized_coords) {
- LLVMTypeRef coord_vec_type = lp_build_vec_type(bld->coord_type);
- LLVMValueRef fp_width = LLVMBuildSIToFP(bld->builder, width, coord_vec_type, "");
- LLVMValueRef fp_height = LLVMBuildSIToFP(bld->builder, height, coord_vec_type, "");
- s = lp_build_mul(&bld->coord_bld, s, fp_width);
- t = lp_build_mul(&bld->coord_bld, t, fp_height);
- }
-
- /* scale coords by 256 (8 fractional bits) */
- s = lp_build_mul_imm(&bld->coord_bld, s, 256);
- t = lp_build_mul_imm(&bld->coord_bld, t, 256);
-
- /* convert float to int */
- s = LLVMBuildFPToSI(builder, s, i32_vec_type, "");
- t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
-
- /* subtract 0.5 (add -128) */
- i32_c128 = lp_build_const_int_vec(i32.type, -128);
- s = LLVMBuildAdd(builder, s, i32_c128, "");
- t = LLVMBuildAdd(builder, t, i32_c128, "");
-
- /* compute floor (shift right 8) */
- i32_c8 = lp_build_const_int_vec(i32.type, 8);
- s_ipart = LLVMBuildAShr(builder, s, i32_c8, "");
- t_ipart = LLVMBuildAShr(builder, t, i32_c8, "");
-
- /* compute fractional part (AND with 0xff) */
- i32_c255 = lp_build_const_int_vec(i32.type, 255);
- s_fpart = LLVMBuildAnd(builder, s, i32_c255, "");
- t_fpart = LLVMBuildAnd(builder, t, i32_c255, "");
-
- x0 = s_ipart;
- y0 = t_ipart;
-
- x1 = lp_build_add(&bld->int_coord_bld, x0, bld->int_coord_bld.one);
- y1 = lp_build_add(&bld->int_coord_bld, y0, bld->int_coord_bld.one);
-
- x0 = lp_build_sample_wrap_int(bld, x0, width, bld->static_state->pot_width,
- bld->static_state->wrap_s);
- y0 = lp_build_sample_wrap_int(bld, y0, height, bld->static_state->pot_height,
- bld->static_state->wrap_t);
-
- x1 = lp_build_sample_wrap_int(bld, x1, width, bld->static_state->pot_width,
- bld->static_state->wrap_s);
- y1 = lp_build_sample_wrap_int(bld, y1, height, bld->static_state->pot_height,
- bld->static_state->wrap_t);
+ LLVMValueRef one = lp_build_one(gallivm, type);
+ unsigned chan;
- /*
- * Transform 4 x i32 in
- *
- * s_fpart = {s0, s1, s2, s3}
- *
- * into 8 x i16
- *
- * s_fpart = {00, s0, 00, s1, 00, s2, 00, s3}
- *
- * into two 8 x i16
- *
- * s_fpart_lo = {s0, s0, s0, s0, s1, s1, s1, s1}
- * s_fpart_hi = {s2, s2, s2, s2, s3, s3, s3, s3}
- *
- * and likewise for t_fpart. There is no risk of loosing precision here
- * since the fractional parts only use the lower 8bits.
- */
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = one;
+ }
+}
- s_fpart = LLVMBuildBitCast(builder, s_fpart, h16_vec_type, "");
- t_fpart = LLVMBuildBitCast(builder, t_fpart, h16_vec_type, "");
- {
- LLVMTypeRef elem_type = LLVMInt32Type();
- LLVMValueRef shuffles_lo[LP_MAX_VECTOR_LENGTH];
- LLVMValueRef shuffles_hi[LP_MAX_VECTOR_LENGTH];
- LLVMValueRef shuffle_lo;
- LLVMValueRef shuffle_hi;
- unsigned i, j;
+/**
+ * Build texture sampling code.
+ * 'texel' will return a vector of four LLVMValueRefs corresponding to
+ * R, G, B, A.
+ * \param type vector float type to use for coords, etc.
+ * \param is_fetch if this is a texel fetch instruction.
+ * \param derivs partial derivatives of (s,t,r,q) with respect to x and y
+ */
+void
+lp_build_sample_soa(struct gallivm_state *gallivm,
+ const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct lp_type type,
+ boolean is_fetch,
+ unsigned texture_index,
+ unsigned sampler_index,
+ const LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ const struct lp_derivatives *derivs, /* optional */
+ LLVMValueRef lod_bias, /* optional */
+ LLVMValueRef explicit_lod, /* optional */
+ enum lp_sampler_lod_property lod_property,
+ LLVMValueRef texel_out[4])
+{
+ unsigned target = static_texture_state->target;
+ unsigned dims = texture_dims(target);
+ unsigned num_quads = type.length / 4;
+ unsigned mip_filter, min_img_filter, mag_img_filter, i;
+ struct lp_build_sample_context bld;
+ struct lp_static_sampler_state derived_sampler_state = *static_sampler_state;
+ LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context);
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMValueRef tex_width, newcoords[5];
+
+ if (0) {
+ enum pipe_format fmt = static_texture_state->format;
+ debug_printf("Sample from %s\n", util_format_name(fmt));
+ }
+
+ if (static_texture_state->format == PIPE_FORMAT_NONE) {
+ /*
+ * If there's nothing bound, format is NONE, and we must return
+ * all zero as mandated by d3d10 in this case.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_const_vec(gallivm, type, 0.0F);
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = zero;
+ }
+ return;
+ }
- for(j = 0; j < h16.type.length; j += 4) {
- unsigned subindex = util_cpu_caps.little_endian ? 0 : 1;
- LLVMValueRef index;
+ assert(type.floating);
- index = LLVMConstInt(elem_type, j/2 + subindex, 0);
- for(i = 0; i < 4; ++i)
- shuffles_lo[j + i] = index;
+ /* Setup our build context */
+ memset(&bld, 0, sizeof bld);
+ bld.gallivm = gallivm;
+ bld.static_sampler_state = &derived_sampler_state;
+ bld.static_texture_state = static_texture_state;
+ bld.dynamic_state = dynamic_state;
+ bld.format_desc = util_format_description(static_texture_state->format);
+ bld.dims = dims;
- index = LLVMConstInt(elem_type, h16.type.length/2 + j/2 + subindex, 0);
- for(i = 0; i < 4; ++i)
- shuffles_hi[j + i] = index;
+ bld.vector_width = lp_type_width(type);
+
+ bld.float_type = lp_type_float(32);
+ bld.int_type = lp_type_int(32);
+ bld.coord_type = type;
+ bld.int_coord_type = lp_int_type(type);
+ bld.float_size_in_type = lp_type_float(32);
+ bld.float_size_in_type.length = dims > 1 ? 4 : 1;
+ bld.int_size_in_type = lp_int_type(bld.float_size_in_type);
+ bld.texel_type = type;
+
+ /* always using the first channel hopefully should be safe,
+ * if not things WILL break in other places anyway.
+ */
+ if (bld.format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB &&
+ bld.format_desc->channel[0].pure_integer) {
+ if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
+ bld.texel_type = lp_type_int_vec(type.width, type.width * type.length);
}
+ else if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) {
+ bld.texel_type = lp_type_uint_vec(type.width, type.width * type.length);
+ }
+ }
+ else if (util_format_has_stencil(bld.format_desc) &&
+ !util_format_has_depth(bld.format_desc)) {
+ /* for stencil only formats, sample stencil (uint) */
+ bld.texel_type = lp_type_int_vec(type.width, type.width * type.length);
+ }
- shuffle_lo = LLVMConstVector(shuffles_lo, h16.type.length);
- shuffle_hi = LLVMConstVector(shuffles_hi, h16.type.length);
+ if (!static_texture_state->level_zero_only) {
+ derived_sampler_state.min_mip_filter = static_sampler_state->min_mip_filter;
+ } else {
+ derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ }
+ mip_filter = derived_sampler_state.min_mip_filter;
- s_fpart_lo = LLVMBuildShuffleVector(builder, s_fpart, h16.undef, shuffle_lo, "");
- t_fpart_lo = LLVMBuildShuffleVector(builder, t_fpart, h16.undef, shuffle_lo, "");
- s_fpart_hi = LLVMBuildShuffleVector(builder, s_fpart, h16.undef, shuffle_hi, "");
- t_fpart_hi = LLVMBuildShuffleVector(builder, t_fpart, h16.undef, shuffle_hi, "");
+ if (0) {
+ debug_printf(" .min_mip_filter = %u\n", derived_sampler_state.min_mip_filter);
}
- stride = lp_build_get_const_level_stride_vec(bld, stride_array, 0);
+ if (static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY)
+ {
+ /*
+ * Seamless filtering ignores wrap modes.
+ * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for
+ * bilinear it's not correct but way better than using for instance repeat.
+ * Note we even set this for non-seamless. Technically GL allows any wrap
+ * mode, which made sense when supporting true borders (can get seamless
+ * effect with border and CLAMP_TO_BORDER), but gallium doesn't support
+ * borders and d3d9 requires wrap modes to be ignored and it's a pain to fix
+ * up the sampler state (as it makes it texture dependent).
+ */
+ derived_sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ derived_sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ }
+
+ min_img_filter = derived_sampler_state.min_img_filter;
+ mag_img_filter = derived_sampler_state.mag_img_filter;
+
/*
- * Fetch the pixels as 4 x 32bit (rgba order might differ):
- *
- * rgba0 rgba1 rgba2 rgba3
- *
- * bit cast them into 16 x u8
- *
- * r0 g0 b0 a0 r1 g1 b1 a1 r2 g2 b2 a2 r3 g3 b3 a3
- *
- * unpack them into two 8 x i16:
- *
- * r0 g0 b0 a0 r1 g1 b1 a1
- * r2 g2 b2 a2 r3 g3 b3 a3
- *
- * The higher 8 bits of the resulting elements will be zero.
+ * This is all a bit complicated different paths are chosen for performance
+ * reasons.
+ * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for
+ * everything (the last two options are equivalent for 4-wide case).
+ * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad
+ * lod is calculated then the lod value extracted afterwards so making this
+ * case basically the same as far as lod handling is concerned for the
+ * further sample/filter code as the 1 lod for everything case.
+ * Different lod handling mostly shows up when building mipmap sizes
+ * (lp_build_mipmap_level_sizes() and friends) and also in filtering
+ * (getting the fractional part of the lod to the right texels).
*/
- neighbors[0][0] = lp_build_sample_packed(bld, x0, y0, stride, data_array);
- neighbors[0][1] = lp_build_sample_packed(bld, x1, y0, stride, data_array);
- neighbors[1][0] = lp_build_sample_packed(bld, x0, y1, stride, data_array);
- neighbors[1][1] = lp_build_sample_packed(bld, x1, y1, stride, data_array);
+ /*
+ * There are other situations where at least the multiple int lods could be
+ * avoided like min and max lod being equal.
+ */
+ bld.num_mips = bld.num_lods = 1;
- neighbors[0][0] = LLVMBuildBitCast(builder, neighbors[0][0], u8n_vec_type, "");
- neighbors[0][1] = LLVMBuildBitCast(builder, neighbors[0][1], u8n_vec_type, "");
- neighbors[1][0] = LLVMBuildBitCast(builder, neighbors[1][0], u8n_vec_type, "");
- neighbors[1][1] = LLVMBuildBitCast(builder, neighbors[1][1], u8n_vec_type, "");
+ if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) &&
+ (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) &&
+ (static_texture_state->target == PIPE_TEXTURE_CUBE) &&
+ (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ /*
+ * special case for using per-pixel lod even for implicit lod,
+ * which is generally never required (ok by APIs) except to please
+ * some (somewhat broken imho) tests (because per-pixel face selection
+ * can cause derivatives to be different for pixels outside the primitive
+ * due to the major axis division even if pre-project derivatives are
+ * looking normal).
+ */
+ bld.num_mips = type.length;
+ bld.num_lods = type.length;
+ }
+ else if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT ||
+ (explicit_lod || lod_bias || derivs)) {
+ if ((is_fetch && target != PIPE_BUFFER) ||
+ (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld.num_mips = type.length;
+ bld.num_lods = type.length;
+ }
+ else if (!is_fetch && min_img_filter != mag_img_filter) {
+ bld.num_mips = 1;
+ bld.num_lods = type.length;
+ }
+ }
+ /* TODO: for true scalar_lod should only use 1 lod value */
+ else if ((is_fetch && explicit_lod && target != PIPE_BUFFER) ||
+ (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld.num_mips = num_quads;
+ bld.num_lods = num_quads;
+ }
+ else if (!is_fetch && min_img_filter != mag_img_filter) {
+ bld.num_mips = 1;
+ bld.num_lods = num_quads;
+ }
- lp_build_unpack2(builder, u8n.type, h16.type, neighbors[0][0], &neighbors_lo[0][0], &neighbors_hi[0][0]);
- lp_build_unpack2(builder, u8n.type, h16.type, neighbors[0][1], &neighbors_lo[0][1], &neighbors_hi[0][1]);
- lp_build_unpack2(builder, u8n.type, h16.type, neighbors[1][0], &neighbors_lo[1][0], &neighbors_hi[1][0]);
- lp_build_unpack2(builder, u8n.type, h16.type, neighbors[1][1], &neighbors_lo[1][1], &neighbors_hi[1][1]);
- /*
- * Linear interpolate with 8.8 fixed point.
- */
+ bld.lodf_type = type;
+ /* we want native vector size to be able to use our intrinsics */
+ if (bld.num_lods != type.length) {
+ /* TODO: this currently always has to be per-quad or per-element */
+ bld.lodf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1;
+ }
+ bld.lodi_type = lp_int_type(bld.lodf_type);
+ bld.levelf_type = bld.lodf_type;
+ if (bld.num_mips == 1) {
+ bld.levelf_type.length = 1;
+ }
+ bld.leveli_type = lp_int_type(bld.levelf_type);
+ bld.float_size_type = bld.float_size_in_type;
+ /* Note: size vectors may not be native. They contain minified w/h/d/_ values,
+ * with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to 8x4f32 */
+ if (bld.num_mips > 1) {
+ bld.float_size_type.length = bld.num_mips == type.length ?
+ bld.num_mips * bld.float_size_in_type.length :
+ type.length;
+ }
+ bld.int_size_type = lp_int_type(bld.float_size_type);
+
+ lp_build_context_init(&bld.float_bld, gallivm, bld.float_type);
+ lp_build_context_init(&bld.float_vec_bld, gallivm, type);
+ lp_build_context_init(&bld.int_bld, gallivm, bld.int_type);
+ lp_build_context_init(&bld.coord_bld, gallivm, bld.coord_type);
+ lp_build_context_init(&bld.int_coord_bld, gallivm, bld.int_coord_type);
+ lp_build_context_init(&bld.int_size_in_bld, gallivm, bld.int_size_in_type);
+ lp_build_context_init(&bld.float_size_in_bld, gallivm, bld.float_size_in_type);
+ lp_build_context_init(&bld.int_size_bld, gallivm, bld.int_size_type);
+ lp_build_context_init(&bld.float_size_bld, gallivm, bld.float_size_type);
+ lp_build_context_init(&bld.texel_bld, gallivm, bld.texel_type);
+ lp_build_context_init(&bld.levelf_bld, gallivm, bld.levelf_type);
+ lp_build_context_init(&bld.leveli_bld, gallivm, bld.leveli_type);
+ lp_build_context_init(&bld.lodf_bld, gallivm, bld.lodf_type);
+ lp_build_context_init(&bld.lodi_bld, gallivm, bld.lodi_type);
- packed_lo = lp_build_lerp_2d(&h16,
- s_fpart_lo, t_fpart_lo,
- neighbors_lo[0][0],
- neighbors_lo[0][1],
- neighbors_lo[1][0],
- neighbors_lo[1][1]);
+ /* Get the dynamic state */
+ tex_width = dynamic_state->width(dynamic_state, gallivm, texture_index);
+ bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm, texture_index);
+ bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm, texture_index);
+ bld.base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm, texture_index);
+ bld.mip_offsets = dynamic_state->mip_offsets(dynamic_state, gallivm, texture_index);
+ /* Note that mip_offsets is an array[level] of offsets to texture images */
+
+ /* width, height, depth as single int vector */
+ if (dims <= 1) {
+ bld.int_size = tex_width;
+ }
+ else {
+ bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef,
+ tex_width, LLVMConstInt(i32t, 0, 0), "");
+ if (dims >= 2) {
+ LLVMValueRef tex_height =
+ dynamic_state->height(dynamic_state, gallivm, texture_index);
+ bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
+ tex_height, LLVMConstInt(i32t, 1, 0), "");
+ if (dims >= 3) {
+ LLVMValueRef tex_depth =
+ dynamic_state->depth(dynamic_state, gallivm, texture_index);
+ bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
+ tex_depth, LLVMConstInt(i32t, 2, 0), "");
+ }
+ }
+ }
- packed_hi = lp_build_lerp_2d(&h16,
- s_fpart_hi, t_fpart_hi,
- neighbors_hi[0][0],
- neighbors_hi[0][1],
- neighbors_hi[1][0],
- neighbors_hi[1][1]);
+ for (i = 0; i < 5; i++) {
+ newcoords[i] = coords[i];
+ }
- packed = lp_build_pack2(builder, h16.type, u8n.type, packed_lo, packed_hi);
+ if (0) {
+ /* For debug: no-op texture sampling */
+ lp_build_sample_nop(gallivm,
+ bld.texel_type,
+ newcoords,
+ texel_out);
+ }
- /*
- * Convert to SoA and swizzle.
- */
+ else if (is_fetch) {
+ lp_build_fetch_texel(&bld, texture_index, newcoords,
+ explicit_lod, offsets,
+ texel_out);
+ }
- packed = LLVMBuildBitCast(builder, packed, i32_vec_type, "");
+ else {
+ LLVMValueRef lod_fpart = NULL, lod_positive = NULL;
+ LLVMValueRef ilevel0 = NULL, ilevel1 = NULL;
+ boolean use_aos = util_format_fits_8unorm(bld.format_desc) &&
+ /* not sure this is strictly needed or simply impossible */
+ derived_sampler_state.compare_mode == PIPE_TEX_COMPARE_NONE &&
+ lp_is_simple_wrap_mode(derived_sampler_state.wrap_s);
+
+ use_aos &= bld.num_lods <= num_quads ||
+ derived_sampler_state.min_img_filter ==
+ derived_sampler_state.mag_img_filter;
+ if (dims > 1) {
+ use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_t);
+ if (dims > 2) {
+ use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_r);
+ }
+ }
+ if (static_texture_state->target == PIPE_TEXTURE_CUBE &&
+ derived_sampler_state.seamless_cube_map &&
+ (derived_sampler_state.min_img_filter == PIPE_TEX_FILTER_LINEAR ||
+ derived_sampler_state.mag_img_filter == PIPE_TEX_FILTER_LINEAR)) {
+ /* theoretically possible with AoS filtering but not implemented (complex!) */
+ use_aos = 0;
+ }
- lp_build_rgba8_to_f32_soa(bld->builder,
- bld->texel_type,
- packed, unswizzled);
+ if ((gallivm_debug & GALLIVM_DEBUG_PERF) &&
+ !use_aos && util_format_fits_8unorm(bld.format_desc)) {
+ debug_printf("%s: using floating point linear filtering for %s\n",
+ __FUNCTION__, bld.format_desc->short_name);
+ debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d"
+ " wraps %d wrapt %d wrapr %d\n",
+ derived_sampler_state.min_img_filter,
+ derived_sampler_state.mag_img_filter,
+ derived_sampler_state.min_mip_filter,
+ static_texture_state->target,
+ derived_sampler_state.seamless_cube_map,
+ derived_sampler_state.wrap_s,
+ derived_sampler_state.wrap_t,
+ derived_sampler_state.wrap_r);
+ }
- lp_build_format_swizzle_soa(bld->format_desc,
- bld->texel_type, unswizzled,
- texel);
-}
+ lp_build_sample_common(&bld, texture_index, sampler_index,
+ newcoords,
+ derivs, lod_bias, explicit_lod,
+ &lod_positive, &lod_fpart,
+ &ilevel0, &ilevel1);
+ /*
+ * we only try 8-wide sampling with soa as it appears to
+ * be a loss with aos with AVX (but it should work, except
+ * for conformance if min_filter != mag_filter if num_lods > 1).
+ * (It should be faster if we'd support avx2)
+ */
+ if (num_quads == 1 || !use_aos) {
+ if (use_aos) {
+ /* do sampling/filtering with fixed pt arithmetic */
+ lp_build_sample_aos(&bld, sampler_index,
+ newcoords[0], newcoords[1],
+ newcoords[2],
+ offsets, lod_positive, lod_fpart,
+ ilevel0, ilevel1,
+ texel_out);
+ }
-static void
-lp_build_sample_compare(struct lp_build_sample_context *bld,
- LLVMValueRef p,
- LLVMValueRef *texel)
-{
- struct lp_build_context *texel_bld = &bld->texel_bld;
- LLVMValueRef res;
- unsigned chan;
+ else {
+ lp_build_sample_general(&bld, sampler_index,
+ newcoords, offsets,
+ lod_positive, lod_fpart,
+ ilevel0, ilevel1,
+ texel_out);
+ }
+ }
+ else {
+ unsigned j;
+ struct lp_build_sample_context bld4;
+ struct lp_type type4 = type;
+ unsigned i;
+ LLVMValueRef texelout4[4];
+ LLVMValueRef texelouttmp[4][LP_MAX_VECTOR_LENGTH/16];
+
+ type4.length = 4;
+
+ /* Setup our build context */
+ memset(&bld4, 0, sizeof bld4);
+ bld4.gallivm = bld.gallivm;
+ bld4.static_texture_state = bld.static_texture_state;
+ bld4.static_sampler_state = bld.static_sampler_state;
+ bld4.dynamic_state = bld.dynamic_state;
+ bld4.format_desc = bld.format_desc;
+ bld4.dims = bld.dims;
+ bld4.row_stride_array = bld.row_stride_array;
+ bld4.img_stride_array = bld.img_stride_array;
+ bld4.base_ptr = bld.base_ptr;
+ bld4.mip_offsets = bld.mip_offsets;
+ bld4.int_size = bld.int_size;
+
+ bld4.vector_width = lp_type_width(type4);
+
+ bld4.float_type = lp_type_float(32);
+ bld4.int_type = lp_type_int(32);
+ bld4.coord_type = type4;
+ bld4.int_coord_type = lp_int_type(type4);
+ bld4.float_size_in_type = lp_type_float(32);
+ bld4.float_size_in_type.length = dims > 1 ? 4 : 1;
+ bld4.int_size_in_type = lp_int_type(bld4.float_size_in_type);
+ bld4.texel_type = bld.texel_type;
+ bld4.texel_type.length = 4;
+
+ bld4.num_mips = bld4.num_lods = 1;
+ if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) &&
+ (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) &&
+ (static_texture_state->target == PIPE_TEXTURE_CUBE) &&
+ (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld4.num_mips = type4.length;
+ bld4.num_lods = type4.length;
+ }
+ if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT &&
+ (explicit_lod || lod_bias || derivs)) {
+ if ((is_fetch && target != PIPE_BUFFER) ||
+ (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld4.num_mips = type4.length;
+ bld4.num_lods = type4.length;
+ }
+ else if (!is_fetch && min_img_filter != mag_img_filter) {
+ bld4.num_mips = 1;
+ bld4.num_lods = type4.length;
+ }
+ }
- if(bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE)
- return;
+ /* we want native vector size to be able to use our intrinsics */
+ bld4.lodf_type = type4;
+ if (bld4.num_lods != type4.length) {
+ bld4.lodf_type.length = 1;
+ }
+ bld4.lodi_type = lp_int_type(bld4.lodf_type);
+ bld4.levelf_type = type4;
+ if (bld4.num_mips != type4.length) {
+ bld4.levelf_type.length = 1;
+ }
+ bld4.leveli_type = lp_int_type(bld4.levelf_type);
+ bld4.float_size_type = bld4.float_size_in_type;
+ if (bld4.num_mips > 1) {
+ bld4.float_size_type.length = bld4.num_mips == type4.length ?
+ bld4.num_mips * bld4.float_size_in_type.length :
+ type4.length;
+ }
+ bld4.int_size_type = lp_int_type(bld4.float_size_type);
+
+ lp_build_context_init(&bld4.float_bld, gallivm, bld4.float_type);
+ lp_build_context_init(&bld4.float_vec_bld, gallivm, type4);
+ lp_build_context_init(&bld4.int_bld, gallivm, bld4.int_type);
+ lp_build_context_init(&bld4.coord_bld, gallivm, bld4.coord_type);
+ lp_build_context_init(&bld4.int_coord_bld, gallivm, bld4.int_coord_type);
+ lp_build_context_init(&bld4.int_size_in_bld, gallivm, bld4.int_size_in_type);
+ lp_build_context_init(&bld4.float_size_in_bld, gallivm, bld4.float_size_in_type);
+ lp_build_context_init(&bld4.int_size_bld, gallivm, bld4.int_size_type);
+ lp_build_context_init(&bld4.float_size_bld, gallivm, bld4.float_size_type);
+ lp_build_context_init(&bld4.texel_bld, gallivm, bld4.texel_type);
+ lp_build_context_init(&bld4.levelf_bld, gallivm, bld4.levelf_type);
+ lp_build_context_init(&bld4.leveli_bld, gallivm, bld4.leveli_type);
+ lp_build_context_init(&bld4.lodf_bld, gallivm, bld4.lodf_type);
+ lp_build_context_init(&bld4.lodi_bld, gallivm, bld4.lodi_type);
+
+ for (i = 0; i < num_quads; i++) {
+ LLVMValueRef s4, t4, r4;
+ LLVMValueRef lod_positive4, lod_fpart4 = NULL;
+ LLVMValueRef ilevel04, ilevel14 = NULL;
+ LLVMValueRef offsets4[4] = { NULL };
+ unsigned num_lods = bld4.num_lods;
+
+ s4 = lp_build_extract_range(gallivm, newcoords[0], 4*i, 4);
+ t4 = lp_build_extract_range(gallivm, newcoords[1], 4*i, 4);
+ r4 = lp_build_extract_range(gallivm, newcoords[2], 4*i, 4);
+
+ if (offsets[0]) {
+ offsets4[0] = lp_build_extract_range(gallivm, offsets[0], 4*i, 4);
+ if (dims > 1) {
+ offsets4[1] = lp_build_extract_range(gallivm, offsets[1], 4*i, 4);
+ if (dims > 2) {
+ offsets4[2] = lp_build_extract_range(gallivm, offsets[2], 4*i, 4);
+ }
+ }
+ }
+ lod_positive4 = lp_build_extract_range(gallivm, lod_positive, num_lods * i, num_lods);
+ ilevel04 = bld.num_mips == 1 ? ilevel0 :
+ lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods);
+ if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
+ ilevel14 = lp_build_extract_range(gallivm, ilevel1, num_lods * i, num_lods);
+ lod_fpart4 = lp_build_extract_range(gallivm, lod_fpart, num_lods * i, num_lods);
+ }
- /* TODO: Compare before swizzling, to avoid redundant computations */
- res = NULL;
- for(chan = 0; chan < 4; ++chan) {
- LLVMValueRef cmp;
- cmp = lp_build_cmp(texel_bld, bld->static_state->compare_func, p, texel[chan]);
- cmp = lp_build_select(texel_bld, cmp, texel_bld->one, texel_bld->zero);
+ if (use_aos) {
+ /* do sampling/filtering with fixed pt arithmetic */
+ lp_build_sample_aos(&bld4, sampler_index,
+ s4, t4, r4, offsets4,
+ lod_positive4, lod_fpart4,
+ ilevel04, ilevel14,
+ texelout4);
+ }
- if(res)
- res = lp_build_add(texel_bld, res, cmp);
- else
- res = cmp;
+ else {
+ /* this path is currently unreachable and hence might break easily... */
+ LLVMValueRef newcoords4[5];
+ newcoords4[0] = s4;
+ newcoords4[1] = t4;
+ newcoords4[2] = r4;
+ newcoords4[3] = lp_build_extract_range(gallivm, newcoords[3], 4*i, 4);
+ newcoords4[4] = lp_build_extract_range(gallivm, newcoords[4], 4*i, 4);
+
+ lp_build_sample_general(&bld4, sampler_index,
+ newcoords4, offsets4,
+ lod_positive4, lod_fpart4,
+ ilevel04, ilevel14,
+ texelout4);
+ }
+ for (j = 0; j < 4; j++) {
+ texelouttmp[j][i] = texelout4[j];
+ }
+ }
+
+ for (j = 0; j < 4; j++) {
+ texel_out[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads);
+ }
+ }
}
- assert(res);
- res = lp_build_mul(texel_bld, res, lp_build_const_vec(texel_bld->type, 0.25));
+ if (target != PIPE_BUFFER) {
+ apply_sampler_swizzle(&bld, texel_out);
+ }
- /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */
- for(chan = 0; chan < 3; ++chan)
- texel[chan] = res;
- texel[3] = texel_bld->one;
+ /*
+ * texel type can be a (32bit) int/uint (for pure int formats only),
+ * however we are expected to always return floats (storage is untyped).
+ */
+ if (!bld.texel_type.floating) {
+ unsigned chan;
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = LLVMBuildBitCast(builder, texel_out[chan],
+ lp_build_vec_type(gallivm, type), "");
+ }
+ }
}
-
-/**
- * Build texture sampling code.
- * 'texel' will return a vector of four LLVMValueRefs corresponding to
- * R, G, B, A.
- * \param type vector float type to use for coords, etc.
- */
void
-lp_build_sample_soa(LLVMBuilderRef builder,
- const struct lp_sampler_static_state *static_state,
- struct lp_sampler_dynamic_state *dynamic_state,
- struct lp_type type,
- unsigned unit,
- unsigned num_coords,
- const LLVMValueRef *coords,
- LLVMValueRef lodbias,
- LLVMValueRef *texel)
+lp_build_size_query_soa(struct gallivm_state *gallivm,
+ const struct lp_static_texture_state *static_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct lp_type int_type,
+ unsigned texture_unit,
+ unsigned target,
+ boolean is_sviewinfo,
+ enum lp_sampler_lod_property lod_property,
+ LLVMValueRef explicit_lod,
+ LLVMValueRef *sizes_out)
{
- struct lp_build_sample_context bld;
- LLVMValueRef width, width_vec;
- LLVMValueRef height, height_vec;
- LLVMValueRef depth, depth_vec;
- LLVMValueRef row_stride_array, img_stride_array;
- LLVMValueRef data_array;
- LLVMValueRef s;
- LLVMValueRef t;
- LLVMValueRef r;
+ LLVMValueRef lod, level, size;
+ LLVMValueRef first_level = NULL;
+ int dims, i;
+ boolean has_array;
+ unsigned num_lods = 1;
+ struct lp_build_context bld_int_vec4;
+
+ if (static_state->format == PIPE_FORMAT_NONE) {
+ /*
+ * If there's nothing bound, format is NONE, and we must return
+ * all zero as mandated by d3d10 in this case.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_const_vec(gallivm, int_type, 0.0F);
+ for (chan = 0; chan < 4; chan++) {
+ sizes_out[chan] = zero;
+ }
+ return;
+ }
- /* Setup our build context */
- memset(&bld, 0, sizeof bld);
- bld.builder = builder;
- bld.static_state = static_state;
- bld.dynamic_state = dynamic_state;
- bld.format_desc = util_format_description(static_state->format);
+ /*
+ * Do some sanity verification about bound texture and shader dcl target.
+ * Not entirely sure what's possible but assume array/non-array
+ * always compatible (probably not ok for OpenGL but d3d10 has no
+ * distinction of arrays at the resource level).
+ * Everything else looks bogus (though not entirely sure about rect/2d).
+ * Currently disabled because it causes assertion failures if there's
+ * nothing bound (or rather a dummy texture, not that this case would
+ * return the right values).
+ */
+ if (0 && static_state->target != target) {
+ if (static_state->target == PIPE_TEXTURE_1D)
+ assert(target == PIPE_TEXTURE_1D_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_1D_ARRAY)
+ assert(target == PIPE_TEXTURE_1D);
+ else if (static_state->target == PIPE_TEXTURE_2D)
+ assert(target == PIPE_TEXTURE_2D_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_2D_ARRAY)
+ assert(target == PIPE_TEXTURE_2D);
+ else if (static_state->target == PIPE_TEXTURE_CUBE)
+ assert(target == PIPE_TEXTURE_CUBE_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_CUBE_ARRAY)
+ assert(target == PIPE_TEXTURE_CUBE);
+ else
+ assert(0);
+ }
- bld.float_type = lp_type_float(32);
- bld.int_type = lp_type_int(32);
- bld.coord_type = type;
- bld.uint_coord_type = lp_uint_type(type);
- bld.int_coord_type = lp_int_type(type);
- bld.texel_type = type;
+ dims = texture_dims(target);
- lp_build_context_init(&bld.float_bld, builder, bld.float_type);
- lp_build_context_init(&bld.int_bld, builder, bld.int_type);
- lp_build_context_init(&bld.coord_bld, builder, bld.coord_type);
- lp_build_context_init(&bld.uint_coord_bld, builder, bld.uint_coord_type);
- lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type);
- lp_build_context_init(&bld.texel_bld, builder, bld.texel_type);
+ switch (target) {
+ case PIPE_TEXTURE_1D_ARRAY:
+ case PIPE_TEXTURE_2D_ARRAY:
+ has_array = TRUE;
+ break;
+ default:
+ has_array = FALSE;
+ break;
+ }
- /* Get the dynamic state */
- width = dynamic_state->width(dynamic_state, builder, unit);
- height = dynamic_state->height(dynamic_state, builder, unit);
- depth = dynamic_state->depth(dynamic_state, builder, unit);
- row_stride_array = dynamic_state->row_stride(dynamic_state, builder, unit);
- img_stride_array = dynamic_state->img_stride(dynamic_state, builder, unit);
- data_array = dynamic_state->data_ptr(dynamic_state, builder, unit);
- /* Note that data_array is an array[level] of pointers to texture images */
-
- s = coords[0];
- t = coords[1];
- r = coords[2];
-
- width_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, width);
- height_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, height);
- depth_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, depth);
-
- if (util_format_is_rgba8_variant(bld.format_desc) &&
- static_state->target == PIPE_TEXTURE_2D &&
- static_state->min_img_filter == PIPE_TEX_FILTER_LINEAR &&
- static_state->mag_img_filter == PIPE_TEX_FILTER_LINEAR &&
- static_state->min_mip_filter == PIPE_TEX_MIPFILTER_NONE &&
- is_simple_wrap_mode(static_state->wrap_s) &&
- is_simple_wrap_mode(static_state->wrap_t)) {
- /* special case */
- lp_build_sample_2d_linear_aos(&bld, s, t, width_vec, height_vec,
- row_stride_array, data_array, texel);
+ assert(!int_type.floating);
+
+ lp_build_context_init(&bld_int_vec4, gallivm, lp_type_int_vec(32, 128));
+
+ if (explicit_lod) {
+ /* FIXME: this needs to honor per-element lod */
+ lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod, lp_build_const_int32(gallivm, 0), "");
+ first_level = dynamic_state->first_level(dynamic_state, gallivm, texture_unit);
+ level = LLVMBuildAdd(gallivm->builder, lod, first_level, "level");
+ lod = lp_build_broadcast_scalar(&bld_int_vec4, level);
+ } else {
+ lod = bld_int_vec4.zero;
}
- else {
- lp_build_sample_general(&bld, unit, s, t, r,
- width, height, depth,
- width_vec, height_vec, depth_vec,
- row_stride_array, img_stride_array,
- data_array,
- texel);
+
+ size = bld_int_vec4.undef;
+
+ size = LLVMBuildInsertElement(gallivm->builder, size,
+ dynamic_state->width(dynamic_state, gallivm, texture_unit),
+ lp_build_const_int32(gallivm, 0), "");
+
+ if (dims >= 2) {
+ size = LLVMBuildInsertElement(gallivm->builder, size,
+ dynamic_state->height(dynamic_state, gallivm, texture_unit),
+ lp_build_const_int32(gallivm, 1), "");
+ }
+
+ if (dims >= 3) {
+ size = LLVMBuildInsertElement(gallivm->builder, size,
+ dynamic_state->depth(dynamic_state, gallivm, texture_unit),
+ lp_build_const_int32(gallivm, 2), "");
}
- lp_build_sample_compare(&bld, r, texel);
+ size = lp_build_minify(&bld_int_vec4, size, lod, TRUE);
+
+ if (has_array)
+ size = LLVMBuildInsertElement(gallivm->builder, size,
+ dynamic_state->depth(dynamic_state, gallivm, texture_unit),
+ lp_build_const_int32(gallivm, dims), "");
+
+ /*
+ * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels)
+ * if level is out of bounds (note this can't cover unbound texture
+ * here, which also requires returning zero).
+ */
+ if (explicit_lod && is_sviewinfo) {
+ LLVMValueRef last_level, out, out1;
+ struct lp_build_context leveli_bld;
+
+ /* everything is scalar for now */
+ lp_build_context_init(&leveli_bld, gallivm, lp_type_int_vec(32, 32));
+ last_level = dynamic_state->last_level(dynamic_state, gallivm, texture_unit);
+
+ out = lp_build_cmp(&leveli_bld, PIPE_FUNC_LESS, level, first_level);
+ out1 = lp_build_cmp(&leveli_bld, PIPE_FUNC_GREATER, level, last_level);
+ out = lp_build_or(&leveli_bld, out, out1);
+ if (num_lods == 1) {
+ out = lp_build_broadcast_scalar(&bld_int_vec4, out);
+ }
+ else {
+ /* TODO */
+ assert(0);
+ }
+ size = lp_build_andnot(&bld_int_vec4, size, out);
+ }
+ for (i = 0; i < dims + (has_array ? 1 : 0); i++) {
+ sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec4.type, int_type,
+ size,
+ lp_build_const_int32(gallivm, i));
+ }
+ if (is_sviewinfo) {
+ for (; i < 4; i++) {
+ sizes_out[i] = lp_build_const_vec(gallivm, int_type, 0.0);
+ }
+ }
+
+ /*
+ * if there's no explicit_lod (buffers, rects) queries requiring nr of
+ * mips would be illegal.
+ */
+ if (is_sviewinfo && explicit_lod) {
+ struct lp_build_context bld_int_scalar;
+ LLVMValueRef num_levels;
+ lp_build_context_init(&bld_int_scalar, gallivm, lp_type_int(32));
+
+ if (static_state->level_zero_only) {
+ num_levels = bld_int_scalar.one;
+ }
+ else {
+ LLVMValueRef last_level;
+
+ last_level = dynamic_state->last_level(dynamic_state, gallivm, texture_unit);
+ num_levels = lp_build_sub(&bld_int_scalar, last_level, first_level);
+ num_levels = lp_build_add(&bld_int_scalar, num_levels, bld_int_scalar.one);
+ }
+ sizes_out[3] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, int_type),
+ num_levels);
+ }
}
projects / mesa.git / blobdiff