/**
* @file
- * Texture sampling -- SoA.
+ * Texture sampling -- AoS.
*
* @author Jose Fonseca <jfonseca@vmware.com>
* @author Brian Paul <brianp@vmware.com>
#include "util/u_dump.h"
#include "util/u_memory.h"
#include "util/u_math.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
+#include "util/u_cpu_detect.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_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_init.h"
#include "lp_bld_sample.h"
#include "lp_bld_sample_aos.h"
#include "lp_bld_quad.h"
* for scaled integer texcoords.
* \param block_length is the length of the pixel block along the
* coordinate axis
- * \param coord the incoming texcoord (s,t,r or q) scaled to the texture size
+ * \param coord the incoming texcoord (s,t or r) scaled to the texture size
+ * \param coord_f the incoming texcoord (s,t or r) as float vec
* \param length the texture size along one dimension
* \param stride pixel stride along the coordinate axis (in bytes)
+ * \param offset the texel offset along the coord axis
* \param is_pot if TRUE, length is a power of two
* \param wrap_mode one of PIPE_TEX_WRAP_x
* \param out_offset byte offset for the wrapped coordinate
lp_build_sample_wrap_nearest_int(struct lp_build_sample_context *bld,
unsigned block_length,
LLVMValueRef coord,
+ LLVMValueRef coord_f,
LLVMValueRef length,
LLVMValueRef stride,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode,
LLVMValueRef *out_offset,
LLVMValueRef *out_i)
{
- struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ LLVMBuilderRef builder = bld->gallivm->builder;
LLVMValueRef length_minus_one;
- length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
+ length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
switch(wrap_mode) {
case PIPE_TEX_WRAP_REPEAT:
if(is_pot)
- coord = LLVMBuildAnd(bld->builder, coord, length_minus_one, "");
+ coord = LLVMBuildAnd(builder, coord, length_minus_one, "");
else {
- /* Add a bias to the texcoord to handle negative coords */
- LLVMValueRef bias = lp_build_mul_imm(uint_coord_bld, length, 1024);
- coord = LLVMBuildAdd(bld->builder, coord, bias, "");
- coord = LLVMBuildURem(bld->builder, coord, length, "");
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord_f = lp_build_add(coord_bld, coord_f, offset);
+ }
+ coord = lp_build_fract_safe(coord_bld, coord_f);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_itrunc(coord_bld, coord);
}
break;
assert(0);
}
- lp_build_sample_partial_offset(uint_coord_bld, block_length, coord, stride,
+ lp_build_sample_partial_offset(int_coord_bld, block_length, coord, stride,
out_offset, out_i);
}
+/**
+ * Helper to compute the first coord and the weight for
+ * linear wrap repeat npot textures
+ */
+static void
+lp_build_coord_repeat_npot_linear_int(struct lp_build_sample_context *bld,
+ LLVMValueRef coord_f,
+ LLVMValueRef length_i,
+ LLVMValueRef length_f,
+ LLVMValueRef *coord0_i,
+ LLVMValueRef *weight_i)
+{
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ struct lp_build_context abs_coord_bld;
+ struct lp_type abs_type;
+ LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length_i,
+ int_coord_bld->one);
+ LLVMValueRef mask, i32_c8, i32_c128, i32_c255;
+
+ /* wrap with normalized floats is just fract */
+ coord_f = lp_build_fract(coord_bld, coord_f);
+ /* mul by size */
+ coord_f = lp_build_mul(coord_bld, coord_f, length_f);
+ /* convert to int, compute lerp weight */
+ coord_f = lp_build_mul_imm(&bld->coord_bld, coord_f, 256);
+
+ /* At this point we don't have any negative numbers so use non-signed
+ * build context which might help on some archs.
+ */
+ abs_type = coord_bld->type;
+ abs_type.sign = 0;
+ lp_build_context_init(&abs_coord_bld, bld->gallivm, abs_type);
+ *coord0_i = lp_build_iround(&abs_coord_bld, coord_f);
+
+ /* subtract 0.5 (add -128) */
+ i32_c128 = lp_build_const_int_vec(bld->gallivm, bld->int_coord_type, -128);
+ *coord0_i = LLVMBuildAdd(bld->gallivm->builder, *coord0_i, i32_c128, "");
+
+ /* compute fractional part (AND with 0xff) */
+ i32_c255 = lp_build_const_int_vec(bld->gallivm, bld->int_coord_type, 255);
+ *weight_i = LLVMBuildAnd(bld->gallivm->builder, *coord0_i, i32_c255, "");
+
+ /* compute floor (shift right 8) */
+ i32_c8 = lp_build_const_int_vec(bld->gallivm, bld->int_coord_type, 8);
+ *coord0_i = LLVMBuildAShr(bld->gallivm->builder, *coord0_i, i32_c8, "");
+ /*
+ * we avoided the 0.5/length division before the repeat wrap,
+ * now need to fix up edge cases with selects
+ */
+ 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);
+ /*
+ * We should never get values too large - except if coord was nan or inf,
+ * in which case things go terribly wrong...
+ * Alternatively, could use fract_safe above...
+ */
+ *coord0_i = lp_build_min(int_coord_bld, *coord0_i, length_minus_one);
+}
+
+
/**
* Build LLVM code for texture coord wrapping, for linear filtering,
* for scaled integer texcoords.
* \param block_length is the length of the pixel block along the
* coordinate axis
- * \param coord0 the incoming texcoord (s,t,r or q) scaled to the texture size
+ * \param coord0 the incoming texcoord (s,t or r) scaled to the texture size
+ * \param coord_f the incoming texcoord (s,t or r) as float vec
* \param length the texture size along one dimension
* \param stride pixel stride along the coordinate axis (in bytes)
+ * \param offset the texel offset along the coord axis
* \param is_pot if TRUE, length is a power of two
* \param wrap_mode one of PIPE_TEX_WRAP_x
* \param offset0 resulting relative offset for coord0
lp_build_sample_wrap_linear_int(struct lp_build_sample_context *bld,
unsigned block_length,
LLVMValueRef coord0,
+ LLVMValueRef *weight_i,
+ LLVMValueRef coord_f,
LLVMValueRef length,
LLVMValueRef stride,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode,
LLVMValueRef *offset0,
LLVMValueRef *i0,
LLVMValueRef *i1)
{
- struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ LLVMBuilderRef builder = bld->gallivm->builder;
LLVMValueRef length_minus_one;
LLVMValueRef lmask, umask, mask;
- if (block_length != 1) {
- /*
- * If the pixel block covers more than one pixel then there is no easy
- * way to calculate offset1 relative to offset0. Instead, compute them
- * independently.
- */
-
- LLVMValueRef coord1;
-
- lp_build_sample_wrap_nearest_int(bld,
- block_length,
- coord0,
- length,
- stride,
- is_pot,
- wrap_mode,
- offset0, i0);
-
- coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /*
+ * If the pixel block covers more than one pixel then there is no easy
+ * way to calculate offset1 relative to offset0. Instead, compute them
+ * independently. Otherwise, try to compute offset0 and offset1 with
+ * a single stride multiplication.
+ */
- lp_build_sample_wrap_nearest_int(bld,
- block_length,
- coord1,
- length,
- stride,
- is_pot,
- wrap_mode,
- offset1, i1);
+ length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
+ if (block_length != 1) {
+ LLVMValueRef coord1;
+ switch(wrap_mode) {
+ case PIPE_TEX_WRAP_REPEAT:
+ if (is_pot) {
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, "");
+ coord1 = LLVMBuildAnd(builder, coord1, length_minus_one, "");
+ }
+ else {
+ LLVMValueRef mask;
+ LLVMValueRef length_f = lp_build_int_to_float(&bld->coord_bld, length);
+ if (offset) {
+ offset = lp_build_int_to_float(&bld->coord_bld, offset);
+ offset = lp_build_div(&bld->coord_bld, offset, length_f);
+ coord_f = lp_build_add(&bld->coord_bld, coord_f, offset);
+ }
+ lp_build_coord_repeat_npot_linear_int(bld, coord_f,
+ length, length_f,
+ &coord0, weight_i);
+ mask = lp_build_compare(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_TO_EDGE:
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ coord0 = lp_build_clamp(int_coord_bld, coord0, int_coord_bld->zero,
+ length_minus_one);
+ coord1 = lp_build_clamp(int_coord_bld, coord1, int_coord_bld->zero,
+ length_minus_one);
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP:
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ 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:
+ default:
+ assert(0);
+ coord0 = int_coord_bld->zero;
+ coord1 = int_coord_bld->zero;
+ break;
+ }
+ lp_build_sample_partial_offset(int_coord_bld, block_length, coord0, stride,
+ offset0, i0);
+ lp_build_sample_partial_offset(int_coord_bld, block_length, coord1, stride,
+ offset1, i1);
return;
}
- /*
- * Scalar pixels -- try to compute offset0 and offset1 with a single stride
- * multiplication.
- */
-
- *i0 = uint_coord_bld->zero;
- *i1 = uint_coord_bld->zero;
-
- length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
+ *i0 = int_coord_bld->zero;
+ *i1 = int_coord_bld->zero;
switch(wrap_mode) {
case PIPE_TEX_WRAP_REPEAT:
if (is_pot) {
- coord0 = LLVMBuildAnd(bld->builder, coord0, length_minus_one, "");
+ coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, "");
}
else {
- /* Add a bias to the texcoord to handle negative coords */
- LLVMValueRef bias = lp_build_mul_imm(uint_coord_bld, length, 1024);
- coord0 = LLVMBuildAdd(bld->builder, coord0, bias, "");
- coord0 = LLVMBuildURem(bld->builder, coord0, length, "");
+ LLVMValueRef length_f = lp_build_int_to_float(&bld->coord_bld, length);
+ if (offset) {
+ offset = lp_build_int_to_float(&bld->coord_bld, offset);
+ offset = lp_build_div(&bld->coord_bld, offset, length_f);
+ coord_f = lp_build_add(&bld->coord_bld, coord_f, offset);
+ }
+ lp_build_coord_repeat_npot_linear_int(bld, coord_f,
+ length, length_f,
+ &coord0, weight_i);
}
- mask = lp_build_compare(bld->builder, int_coord_bld->type,
+ mask = lp_build_compare(bld->gallivm, int_coord_bld->type,
PIPE_FUNC_NOTEQUAL, coord0, length_minus_one);
- *offset0 = lp_build_mul(uint_coord_bld, coord0, stride);
- *offset1 = LLVMBuildAnd(bld->builder,
- lp_build_add(uint_coord_bld, *offset0, stride),
+ *offset0 = lp_build_mul(int_coord_bld, coord0, stride);
+ *offset1 = LLVMBuildAnd(builder,
+ lp_build_add(int_coord_bld, *offset0, stride),
mask, "");
break;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- lmask = lp_build_compare(int_coord_bld->builder, int_coord_bld->type,
+ /* XXX this might be slower than the separate path
+ * on some newer cpus. With sse41 this is 8 instructions vs. 7
+ * - at least on SNB this is almost certainly slower since
+ * min/max are cheaper than selects, and the muls aren't bad.
+ */
+ lmask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type,
PIPE_FUNC_GEQUAL, coord0, int_coord_bld->zero);
- umask = lp_build_compare(int_coord_bld->builder, int_coord_bld->type,
+ umask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type,
PIPE_FUNC_LESS, coord0, length_minus_one);
coord0 = lp_build_select(int_coord_bld, lmask, coord0, int_coord_bld->zero);
coord0 = lp_build_select(int_coord_bld, umask, coord0, length_minus_one);
- mask = LLVMBuildAnd(bld->builder, lmask, umask, "");
+ mask = LLVMBuildAnd(builder, lmask, umask, "");
- *offset0 = lp_build_mul(uint_coord_bld, coord0, stride);
- *offset1 = lp_build_add(uint_coord_bld,
+ *offset0 = lp_build_mul(int_coord_bld, coord0, stride);
+ *offset1 = lp_build_add(int_coord_bld,
*offset0,
- LLVMBuildAnd(bld->builder, stride, mask, ""));
+ LLVMBuildAnd(builder, stride, mask, ""));
break;
case PIPE_TEX_WRAP_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
default:
assert(0);
- *offset0 = uint_coord_bld->zero;
- *offset1 = uint_coord_bld->zero;
+ *offset0 = int_coord_bld->zero;
+ *offset1 = int_coord_bld->zero;
break;
}
}
+/**
+ * Fetch texels for image with nearest sampling.
+ * Return filtered color as two vectors of 16-bit fixed point values.
+ */
+static void
+lp_build_sample_fetch_image_nearest(struct lp_build_sample_context *bld,
+ LLVMValueRef data_ptr,
+ LLVMValueRef offset,
+ LLVMValueRef x_subcoord,
+ LLVMValueRef y_subcoord,
+ LLVMValueRef *colors)
+{
+ /*
+ * 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.
+ */
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef rgba8;
+ struct lp_build_context u8n;
+ LLVMTypeRef u8n_vec_type;
+ struct lp_type fetch_type;
+
+ lp_build_context_init(&u8n, bld->gallivm, lp_type_unorm(8, bld->vector_width));
+ u8n_vec_type = lp_build_vec_type(bld->gallivm, u8n.type);
+
+ fetch_type = lp_type_uint(bld->texel_type.width);
+ if (util_format_is_rgba8_variant(bld->format_desc)) {
+ /*
+ * Given the format is a rgba8, just read the pixels as is,
+ * without any swizzling. Swizzling will be done later.
+ */
+ rgba8 = lp_build_gather(bld->gallivm,
+ bld->texel_type.length,
+ bld->format_desc->block.bits,
+ fetch_type,
+ TRUE,
+ data_ptr, offset, TRUE);
+
+ rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
+ }
+ else {
+ rgba8 = lp_build_fetch_rgba_aos(bld->gallivm,
+ bld->format_desc,
+ u8n.type,
+ TRUE,
+ data_ptr, offset,
+ x_subcoord,
+ y_subcoord,
+ bld->cache);
+ }
+
+ *colors = rgba8;
+}
+
+
/**
* Sample a single texture image with nearest sampling.
* If sampling a cube texture, r = cube face in [0,5].
*/
static void
lp_build_sample_image_nearest(struct lp_build_sample_context *bld,
- LLVMValueRef width_vec,
- LLVMValueRef height_vec,
- LLVMValueRef depth_vec,
+ LLVMValueRef int_size,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
+ LLVMValueRef mipoffsets,
LLVMValueRef s,
LLVMValueRef t,
LLVMValueRef r,
- LLVMValueRef *colors_lo,
- LLVMValueRef *colors_hi)
+ const LLVMValueRef *offsets,
+ LLVMValueRef *colors)
{
- const int dims = texture_dims(bld->static_state->target);
- LLVMBuilderRef builder = bld->builder;
- struct lp_build_context i32, h16, u8n;
- LLVMTypeRef i32_vec_type, h16_vec_type, u8n_vec_type;
- LLVMValueRef i32_c8;
- LLVMValueRef s_ipart, t_ipart, r_ipart;
+ const unsigned dims = bld->dims;
+ struct lp_build_context i32;
+ LLVMValueRef width_vec, height_vec, depth_vec;
+ LLVMValueRef s_ipart, t_ipart = NULL, r_ipart = NULL;
+ LLVMValueRef s_float, t_float = NULL, r_float = NULL;
LLVMValueRef x_stride;
LLVMValueRef x_offset, offset;
LLVMValueRef x_subcoord, y_subcoord, z_subcoord;
- 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));
+ lp_build_context_init(&i32, bld->gallivm, lp_type_int_vec(32, bld->vector_width));
- 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);
+ lp_build_extract_image_sizes(bld,
+ &bld->int_size_bld,
+ bld->int_coord_type,
+ int_size,
+ &width_vec,
+ &height_vec,
+ &depth_vec);
- if (bld->static_state->normalized_coords) {
- /* s = s * width, t = t * height */
- LLVMTypeRef coord_vec_type = lp_build_vec_type(bld->coord_type);
- LLVMValueRef fp_width = LLVMBuildSIToFP(bld->builder, width_vec,
- coord_vec_type, "");
- s = lp_build_mul(&bld->coord_bld, s, fp_width);
- if (dims >= 2) {
- LLVMValueRef fp_height = LLVMBuildSIToFP(bld->builder, height_vec,
- coord_vec_type, "");
- t = lp_build_mul(&bld->coord_bld, t, fp_height);
- if (dims >= 3) {
- LLVMValueRef fp_depth = LLVMBuildSIToFP(bld->builder, depth_vec,
- coord_vec_type, "");
- r = lp_build_mul(&bld->coord_bld, r, fp_depth);
- }
- }
- }
+ s_float = s; t_float = t; r_float = r;
- /* scale coords by 256 (8 fractional bits) */
- s = lp_build_mul_imm(&bld->coord_bld, s, 256);
- if (dims >= 2)
- t = lp_build_mul_imm(&bld->coord_bld, t, 256);
- if (dims >= 3)
- r = lp_build_mul_imm(&bld->coord_bld, r, 256);
+ if (bld->static_sampler_state->normalized_coords) {
+ LLVMValueRef flt_size;
+
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, int_size);
+
+ lp_build_unnormalized_coords(bld, flt_size, &s, &t, &r);
+ }
/* convert float to int */
- s = LLVMBuildFPToSI(builder, s, i32_vec_type, "");
+ /* For correct rounding, need floor, not truncation here.
+ * Note that in some cases (clamp to edge, no texel offsets) we
+ * could use a non-signed build context which would help archs
+ * greatly which don't have arch rounding.
+ */
+ s_ipart = lp_build_ifloor(&bld->coord_bld, s);
if (dims >= 2)
- t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
+ t_ipart = lp_build_ifloor(&bld->coord_bld, t);
if (dims >= 3)
- r = LLVMBuildFPToSI(builder, r, i32_vec_type, "");
+ r_ipart = lp_build_ifloor(&bld->coord_bld, r);
- /* compute floor (shift right 8) */
- i32_c8 = lp_build_const_int_vec(i32.type, 8);
- s_ipart = LLVMBuildAShr(builder, s, i32_c8, "");
- if (dims >= 2)
- t_ipart = LLVMBuildAShr(builder, t, i32_c8, "");
- if (dims >= 3)
- r_ipart = LLVMBuildAShr(builder, r, i32_c8, "");
+ /* add texel offsets */
+ if (offsets[0]) {
+ s_ipart = lp_build_add(&i32, s_ipart, offsets[0]);
+ if (dims >= 2) {
+ t_ipart = lp_build_add(&i32, t_ipart, offsets[1]);
+ if (dims >= 3) {
+ r_ipart = lp_build_add(&i32, r_ipart, offsets[2]);
+ }
+ }
+ }
/* get pixel, row, image strides */
- x_stride = lp_build_const_vec(bld->uint_coord_bld.type,
+ x_stride = lp_build_const_vec(bld->gallivm,
+ bld->int_coord_bld.type,
bld->format_desc->block.bits/8);
/* Do texcoord wrapping, compute texel offset */
lp_build_sample_wrap_nearest_int(bld,
bld->format_desc->block.width,
- s_ipart, width_vec, x_stride,
- bld->static_state->pot_width,
- bld->static_state->wrap_s,
+ s_ipart, s_float,
+ width_vec, x_stride, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s,
&x_offset, &x_subcoord);
offset = x_offset;
if (dims >= 2) {
LLVMValueRef y_offset;
lp_build_sample_wrap_nearest_int(bld,
bld->format_desc->block.height,
- t_ipart, height_vec, row_stride_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_t,
+ t_ipart, t_float,
+ height_vec, row_stride_vec, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t,
&y_offset, &y_subcoord);
- offset = lp_build_add(&bld->uint_coord_bld, offset, y_offset);
+ offset = lp_build_add(&bld->int_coord_bld, offset, y_offset);
if (dims >= 3) {
LLVMValueRef z_offset;
lp_build_sample_wrap_nearest_int(bld,
1, /* block length (depth) */
- r_ipart, depth_vec, img_stride_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_r,
+ r_ipart, r_float,
+ depth_vec, img_stride_vec, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r,
&z_offset, &z_subcoord);
- offset = lp_build_add(&bld->uint_coord_bld, offset, z_offset);
- }
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- LLVMValueRef z_offset;
- /* The r coord is the cube face in [0,5] */
- z_offset = lp_build_mul(&bld->uint_coord_bld, r, img_stride_vec);
- offset = lp_build_add(&bld->uint_coord_bld, offset, z_offset);
+ offset = lp_build_add(&bld->int_coord_bld, offset, z_offset);
}
}
+ if (has_layer_coord(bld->static_texture_state->target)) {
+ LLVMValueRef z_offset;
+ /* The r coord is the cube face in [0,5] or array layer */
+ z_offset = lp_build_mul(&bld->int_coord_bld, r, img_stride_vec);
+ offset = lp_build_add(&bld->int_coord_bld, offset, z_offset);
+ }
+ if (mipoffsets) {
+ offset = lp_build_add(&bld->int_coord_bld, offset, mipoffsets);
+ }
+
+ lp_build_sample_fetch_image_nearest(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ colors);
+}
+
+
+/**
+ * Fetch texels for image with linear sampling.
+ * Return filtered color as two vectors of 16-bit fixed point values.
+ */
+static void
+lp_build_sample_fetch_image_linear(struct lp_build_sample_context *bld,
+ LLVMValueRef data_ptr,
+ LLVMValueRef offset[2][2][2],
+ LLVMValueRef x_subcoord[2],
+ LLVMValueRef y_subcoord[2],
+ LLVMValueRef s_fpart,
+ LLVMValueRef t_fpart,
+ LLVMValueRef r_fpart,
+ LLVMValueRef *colors)
+{
+ const unsigned dims = bld->dims;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ struct lp_build_context u8n;
+ LLVMTypeRef u8n_vec_type;
+ LLVMTypeRef elem_type = LLVMInt32TypeInContext(bld->gallivm->context);
+ LLVMValueRef shuffles[LP_MAX_VECTOR_LENGTH];
+ LLVMValueRef shuffle;
+ LLVMValueRef neighbors[2][2][2]; /* [z][y][x] */
+ LLVMValueRef packed;
+ unsigned i, j, k;
+ unsigned numj, numk;
+
+ lp_build_context_init(&u8n, bld->gallivm, lp_type_unorm(8, bld->vector_width));
+ u8n_vec_type = lp_build_vec_type(bld->gallivm, u8n.type);
+
+ /*
+ * Transform 4 x i32 in
+ *
+ * s_fpart = {s0, s1, s2, s3}
+ *
+ * where each value is between 0 and 0xff,
+ *
+ * into one 16 x i20
+ *
+ * s_fpart = {s0, s0, s0, s0, s1, s1, s1, s1, 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.
+ */
+ s_fpart = LLVMBuildBitCast(builder, s_fpart, u8n_vec_type, "");
+ if (dims >= 2)
+ t_fpart = LLVMBuildBitCast(builder, t_fpart, u8n_vec_type, "");
+ if (dims >= 3)
+ r_fpart = LLVMBuildBitCast(builder, r_fpart, u8n_vec_type, "");
+
+ for (j = 0; j < u8n.type.length; j += 4) {
+#if UTIL_ARCH_LITTLE_ENDIAN
+ unsigned subindex = 0;
+#else
+ unsigned subindex = 3;
+#endif
+ LLVMValueRef index;
+
+ index = LLVMConstInt(elem_type, j + subindex, 0);
+ for (i = 0; i < 4; ++i)
+ shuffles[j + i] = index;
+ }
+
+ shuffle = LLVMConstVector(shuffles, u8n.type.length);
+
+ s_fpart = LLVMBuildShuffleVector(builder, s_fpart, u8n.undef,
+ shuffle, "");
+ if (dims >= 2) {
+ t_fpart = LLVMBuildShuffleVector(builder, t_fpart, u8n.undef,
+ shuffle, "");
+ }
+ if (dims >= 3) {
+ r_fpart = LLVMBuildShuffleVector(builder, r_fpart, u8n.undef,
+ shuffle, "");
+ }
/*
* Fetch the pixels as 4 x 32bit (rgba order might differ):
*
* The higher 8 bits of the resulting elements will be zero.
*/
- {
- LLVMValueRef rgba8;
+ numj = 1 + (dims >= 2);
+ numk = 1 + (dims >= 3);
- if (util_format_is_rgba8_variant(bld->format_desc)) {
- /*
- * Given the format is a rgba8, just read the pixels as is,
- * without any swizzling. Swizzling will be done later.
- */
- rgba8 = lp_build_gather(bld->builder,
- bld->texel_type.length,
- bld->format_desc->block.bits,
- bld->texel_type.width,
- data_ptr, offset);
+ for (k = 0; k < numk; k++) {
+ for (j = 0; j < numj; j++) {
+ for (i = 0; i < 2; i++) {
+ LLVMValueRef rgba8;
- rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
- }
- else {
- rgba8 = lp_build_fetch_rgba_aos(bld->builder,
- bld->format_desc,
- u8n.type,
- data_ptr, offset,
- x_subcoord,
- y_subcoord);
+ if (util_format_is_rgba8_variant(bld->format_desc)) {
+ struct lp_type fetch_type;
+ /*
+ * Given the format is a rgba8, just read the pixels as is,
+ * without any swizzling. Swizzling will be done later.
+ */
+ fetch_type = lp_type_uint(bld->texel_type.width);
+ rgba8 = lp_build_gather(bld->gallivm,
+ bld->texel_type.length,
+ bld->format_desc->block.bits,
+ fetch_type,
+ TRUE,
+ data_ptr, offset[k][j][i], TRUE);
+
+ rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
+ }
+ else {
+ rgba8 = lp_build_fetch_rgba_aos(bld->gallivm,
+ bld->format_desc,
+ u8n.type,
+ TRUE,
+ data_ptr, offset[k][j][i],
+ x_subcoord[i],
+ y_subcoord[j],
+ bld->cache);
+ }
+
+ neighbors[k][j][i] = rgba8;
+ }
}
+ }
- /* Expand one 4*rgba8 to two 2*rgba16 */
- lp_build_unpack2(builder, u8n.type, h16.type,
- rgba8,
- colors_lo, colors_hi);
+ /*
+ * Linear interpolation with 8.8 fixed point.
+ */
+ if (bld->static_sampler_state->force_nearest_s) {
+ /* special case 1-D lerp */
+ packed = lp_build_lerp(&u8n,
+ t_fpart,
+ neighbors[0][0][0],
+ neighbors[0][0][1],
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+ }
+ else if (bld->static_sampler_state->force_nearest_t) {
+ /* special case 1-D lerp */
+ packed = lp_build_lerp(&u8n,
+ s_fpart,
+ neighbors[0][0][0],
+ neighbors[0][0][1],
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+ }
+ else {
+ /* general 1/2/3-D lerping */
+ if (dims == 1) {
+ packed = lp_build_lerp(&u8n,
+ s_fpart,
+ neighbors[0][0][0],
+ neighbors[0][0][1],
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+ } else if (dims == 2) {
+ /* 2-D lerp */
+ packed = lp_build_lerp_2d(&u8n,
+ s_fpart, t_fpart,
+ neighbors[0][0][0],
+ neighbors[0][0][1],
+ neighbors[0][1][0],
+ neighbors[0][1][1],
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+ } else {
+ /* 3-D lerp */
+ assert(dims == 3);
+ packed = lp_build_lerp_3d(&u8n,
+ s_fpart, t_fpart, r_fpart,
+ neighbors[0][0][0],
+ neighbors[0][0][1],
+ neighbors[0][1][0],
+ neighbors[0][1][1],
+ neighbors[1][0][0],
+ neighbors[1][0][1],
+ neighbors[1][1][0],
+ neighbors[1][1][1],
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+ }
}
-}
+ *colors = packed;
+}
/**
* Sample a single texture image with (bi-)(tri-)linear sampling.
*/
static void
lp_build_sample_image_linear(struct lp_build_sample_context *bld,
- LLVMValueRef width_vec,
- LLVMValueRef height_vec,
- LLVMValueRef depth_vec,
+ LLVMValueRef int_size,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
+ LLVMValueRef mipoffsets,
LLVMValueRef s,
LLVMValueRef t,
LLVMValueRef r,
- LLVMValueRef *colors_lo,
- LLVMValueRef *colors_hi)
+ const LLVMValueRef *offsets,
+ LLVMValueRef *colors)
{
- const int dims = texture_dims(bld->static_state->target);
- LLVMBuilderRef builder = bld->builder;
- struct lp_build_context i32, h16, u8n;
- LLVMTypeRef i32_vec_type, h16_vec_type, u8n_vec_type;
+ const unsigned dims = bld->dims;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ struct lp_build_context i32;
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 r_ipart, r_fpart, r_fpart_lo, r_fpart_hi;
+ LLVMValueRef width_vec, height_vec, depth_vec;
+ LLVMValueRef s_ipart, s_fpart, s_float;
+ LLVMValueRef t_ipart = NULL, t_fpart = NULL, t_float = NULL;
+ LLVMValueRef r_ipart = NULL, r_fpart = NULL, r_float = NULL;
LLVMValueRef x_stride, y_stride, z_stride;
LLVMValueRef x_offset0, x_offset1;
LLVMValueRef y_offset0, y_offset1;
LLVMValueRef z_offset0, z_offset1;
LLVMValueRef offset[2][2][2]; /* [z][y][x] */
LLVMValueRef x_subcoord[2], y_subcoord[2], z_subcoord[2];
- LLVMValueRef neighbors_lo[2][2][2]; /* [z][y][x] */
- LLVMValueRef neighbors_hi[2][2][2]; /* [z][y][x] */
- LLVMValueRef packed_lo, packed_hi;
unsigned x, y, z;
- unsigned i, j, k;
- unsigned numj, numk;
- 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));
+ lp_build_context_init(&i32, bld->gallivm, lp_type_int_vec(32, bld->vector_width));
- 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);
+ lp_build_extract_image_sizes(bld,
+ &bld->int_size_bld,
+ bld->int_coord_type,
+ int_size,
+ &width_vec,
+ &height_vec,
+ &depth_vec);
- if (bld->static_state->normalized_coords) {
- /* s = s * width, t = t * height */
- LLVMTypeRef coord_vec_type = lp_build_vec_type(bld->coord_type);
- LLVMValueRef fp_width = LLVMBuildSIToFP(bld->builder, width_vec,
- coord_vec_type, "");
- s = lp_build_mul(&bld->coord_bld, s, fp_width);
- if (dims >= 2) {
- LLVMValueRef fp_height = LLVMBuildSIToFP(bld->builder, height_vec,
- coord_vec_type, "");
- t = lp_build_mul(&bld->coord_bld, t, fp_height);
- }
- if (dims >= 3) {
- LLVMValueRef fp_depth = LLVMBuildSIToFP(bld->builder, depth_vec,
- coord_vec_type, "");
- r = lp_build_mul(&bld->coord_bld, r, fp_depth);
- }
- }
+ s_float = s; t_float = t; r_float = r;
- /* scale coords by 256 (8 fractional bits) */
- s = lp_build_mul_imm(&bld->coord_bld, s, 256);
- if (dims >= 2)
- t = lp_build_mul_imm(&bld->coord_bld, t, 256);
- if (dims >= 3)
- r = lp_build_mul_imm(&bld->coord_bld, r, 256);
+ if (bld->static_sampler_state->normalized_coords) {
+ LLVMValueRef scaled_size;
+ LLVMValueRef flt_size;
+
+ /* scale size by 256 (8 fractional bits) */
+ scaled_size = lp_build_shl_imm(&bld->int_size_bld, int_size, 8);
+
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, scaled_size);
+
+ lp_build_unnormalized_coords(bld, flt_size, &s, &t, &r);
+ }
+ else {
+ /* scale coords by 256 (8 fractional bits) */
+ s = lp_build_mul_imm(&bld->coord_bld, s, 256);
+ if (dims >= 2)
+ t = lp_build_mul_imm(&bld->coord_bld, t, 256);
+ if (dims >= 3)
+ r = lp_build_mul_imm(&bld->coord_bld, r, 256);
+ }
/* convert float to int */
- s = LLVMBuildFPToSI(builder, s, i32_vec_type, "");
+ /* For correct rounding, need round to nearest, not truncation here.
+ * Note that in some cases (clamp to edge, no texel offsets) we
+ * could use a non-signed build context which would help archs which
+ * don't have fptosi intrinsic with nearest rounding implemented.
+ */
+ s = lp_build_iround(&bld->coord_bld, s);
if (dims >= 2)
- t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
+ t = lp_build_iround(&bld->coord_bld, t);
if (dims >= 3)
- r = LLVMBuildFPToSI(builder, r, i32_vec_type, "");
+ r = lp_build_iround(&bld->coord_bld, r);
/* subtract 0.5 (add -128) */
- i32_c128 = lp_build_const_int_vec(i32.type, -128);
- s = LLVMBuildAdd(builder, s, i32_c128, "");
- if (dims >= 2) {
+ i32_c128 = lp_build_const_int_vec(bld->gallivm, i32.type, -128);
+ if (!bld->static_sampler_state->force_nearest_s) {
+ s = LLVMBuildAdd(builder, s, i32_c128, "");
+ }
+ if (dims >= 2 && !bld->static_sampler_state->force_nearest_t) {
t = LLVMBuildAdd(builder, t, i32_c128, "");
}
if (dims >= 3) {
}
/* compute floor (shift right 8) */
- i32_c8 = lp_build_const_int_vec(i32.type, 8);
+ i32_c8 = lp_build_const_int_vec(bld->gallivm, i32.type, 8);
s_ipart = LLVMBuildAShr(builder, s, i32_c8, "");
if (dims >= 2)
t_ipart = LLVMBuildAShr(builder, t, i32_c8, "");
if (dims >= 3)
r_ipart = LLVMBuildAShr(builder, r, i32_c8, "");
+ /* add texel offsets */
+ if (offsets[0]) {
+ s_ipart = lp_build_add(&i32, s_ipart, offsets[0]);
+ if (dims >= 2) {
+ t_ipart = lp_build_add(&i32, t_ipart, offsets[1]);
+ if (dims >= 3) {
+ r_ipart = lp_build_add(&i32, r_ipart, offsets[2]);
+ }
+ }
+ }
+
/* compute fractional part (AND with 0xff) */
- i32_c255 = lp_build_const_int_vec(i32.type, 255);
+ i32_c255 = lp_build_const_int_vec(bld->gallivm, i32.type, 255);
s_fpart = LLVMBuildAnd(builder, s, i32_c255, "");
if (dims >= 2)
t_fpart = LLVMBuildAnd(builder, t, i32_c255, "");
r_fpart = LLVMBuildAnd(builder, r, i32_c255, "");
/* get pixel, row and image strides */
- x_stride = lp_build_const_vec(bld->uint_coord_bld.type,
+ x_stride = lp_build_const_vec(bld->gallivm, bld->int_coord_bld.type,
bld->format_desc->block.bits/8);
y_stride = row_stride_vec;
z_stride = img_stride_vec;
/* do texcoord wrapping and compute texel offsets */
lp_build_sample_wrap_linear_int(bld,
bld->format_desc->block.width,
- s_ipart, width_vec, x_stride,
- bld->static_state->pot_width,
- bld->static_state->wrap_s,
+ s_ipart, &s_fpart, s_float,
+ width_vec, x_stride, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s,
&x_offset0, &x_offset1,
&x_subcoord[0], &x_subcoord[1]);
+
+ /* add potential cube/array/mip offsets now as they are constant per pixel */
+ if (has_layer_coord(bld->static_texture_state->target)) {
+ LLVMValueRef z_offset;
+ z_offset = lp_build_mul(&bld->int_coord_bld, r, img_stride_vec);
+ /* The r coord is the cube face in [0,5] or array layer */
+ x_offset0 = lp_build_add(&bld->int_coord_bld, x_offset0, z_offset);
+ x_offset1 = lp_build_add(&bld->int_coord_bld, x_offset1, z_offset);
+ }
+ if (mipoffsets) {
+ x_offset0 = lp_build_add(&bld->int_coord_bld, x_offset0, mipoffsets);
+ x_offset1 = lp_build_add(&bld->int_coord_bld, x_offset1, mipoffsets);
+ }
+
for (z = 0; z < 2; z++) {
for (y = 0; y < 2; y++) {
offset[z][y][0] = x_offset0;
if (dims >= 2) {
lp_build_sample_wrap_linear_int(bld,
bld->format_desc->block.height,
- t_ipart, height_vec, y_stride,
- bld->static_state->pot_height,
- bld->static_state->wrap_t,
+ t_ipart, &t_fpart, t_float,
+ height_vec, y_stride, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t,
&y_offset0, &y_offset1,
&y_subcoord[0], &y_subcoord[1]);
for (z = 0; z < 2; z++) {
for (x = 0; x < 2; x++) {
- offset[z][0][x] = lp_build_add(&bld->uint_coord_bld,
+ offset[z][0][x] = lp_build_add(&bld->int_coord_bld,
offset[z][0][x], y_offset0);
- offset[z][1][x] = lp_build_add(&bld->uint_coord_bld,
+ offset[z][1][x] = lp_build_add(&bld->int_coord_bld,
offset[z][1][x], y_offset1);
}
}
if (dims >= 3) {
lp_build_sample_wrap_linear_int(bld,
- bld->format_desc->block.height,
- r_ipart, depth_vec, z_stride,
- bld->static_state->pot_depth,
- bld->static_state->wrap_r,
+ 1, /* block length (depth) */
+ r_ipart, &r_fpart, r_float,
+ depth_vec, z_stride, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r,
&z_offset0, &z_offset1,
&z_subcoord[0], &z_subcoord[1]);
for (y = 0; y < 2; y++) {
for (x = 0; x < 2; x++) {
- offset[0][y][x] = lp_build_add(&bld->uint_coord_bld,
+ offset[0][y][x] = lp_build_add(&bld->int_coord_bld,
offset[0][y][x], z_offset0);
- offset[1][y][x] = lp_build_add(&bld->uint_coord_bld,
+ offset[1][y][x] = lp_build_add(&bld->int_coord_bld,
offset[1][y][x], z_offset1);
}
}
}
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- LLVMValueRef z_offset;
- z_offset = lp_build_mul(&bld->uint_coord_bld, r, img_stride_vec);
- for (y = 0; y < 2; y++) {
- for (x = 0; x < 2; x++) {
- /* The r coord is the cube face in [0,5] */
- offset[0][y][x] = lp_build_add(&bld->uint_coord_bld,
- offset[0][y][x], z_offset);
- }
- }
- }
-
- /*
- * 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.
- */
- s_fpart = LLVMBuildBitCast(builder, s_fpart, h16_vec_type, "");
- if (dims >= 2)
- t_fpart = LLVMBuildBitCast(builder, t_fpart, h16_vec_type, "");
- if (dims >= 3)
- r_fpart = LLVMBuildBitCast(builder, r_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;
-
- for (j = 0; j < h16.type.length; j += 4) {
-#ifdef PIPE_ARCH_LITTLE_ENDIAN
- unsigned subindex = 0;
-#else
- unsigned subindex = 1;
-#endif
- LLVMValueRef index;
-
- index = LLVMConstInt(elem_type, j/2 + subindex, 0);
- for (i = 0; i < 4; ++i)
- shuffles_lo[j + i] = index;
-
- index = LLVMConstInt(elem_type, h16.type.length/2 + j/2 + subindex, 0);
- for (i = 0; i < 4; ++i)
- shuffles_hi[j + i] = index;
- }
-
- shuffle_lo = LLVMConstVector(shuffles_lo, h16.type.length);
- shuffle_hi = LLVMConstVector(shuffles_hi, h16.type.length);
-
- s_fpart_lo = LLVMBuildShuffleVector(builder, s_fpart, h16.undef,
- shuffle_lo, "");
- s_fpart_hi = LLVMBuildShuffleVector(builder, s_fpart, h16.undef,
- shuffle_hi, "");
- if (dims >= 2) {
- t_fpart_lo = LLVMBuildShuffleVector(builder, t_fpart, h16.undef,
- shuffle_lo, "");
- t_fpart_hi = LLVMBuildShuffleVector(builder, t_fpart, h16.undef,
- shuffle_hi, "");
- }
- if (dims >= 3) {
- r_fpart_lo = LLVMBuildShuffleVector(builder, r_fpart, h16.undef,
- shuffle_lo, "");
- r_fpart_hi = LLVMBuildShuffleVector(builder, r_fpart, h16.undef,
- shuffle_hi, "");
- }
- }
-
- /*
- * 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.
- */
- numj = 1 + (dims >= 2);
- numk = 1 + (dims >= 3);
-
- for (k = 0; k < numk; k++) {
- for (j = 0; j < numj; j++) {
- for (i = 0; i < 2; i++) {
- LLVMValueRef rgba8;
-
- if (util_format_is_rgba8_variant(bld->format_desc)) {
- /*
- * Given the format is a rgba8, just read the pixels as is,
- * without any swizzling. Swizzling will be done later.
- */
- rgba8 = lp_build_gather(bld->builder,
- bld->texel_type.length,
- bld->format_desc->block.bits,
- bld->texel_type.width,
- data_ptr, offset[k][j][i]);
-
- rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
- }
- else {
- rgba8 = lp_build_fetch_rgba_aos(bld->builder,
- bld->format_desc,
- u8n.type,
- data_ptr, offset[k][j][i],
- x_subcoord[i],
- y_subcoord[j]);
- }
- /* Expand one 4*rgba8 to two 2*rgba16 */
- lp_build_unpack2(builder, u8n.type, h16.type,
- rgba8,
- &neighbors_lo[k][j][i], &neighbors_hi[k][j][i]);
- }
- }
- }
-
- /*
- * Linear interpolation with 8.8 fixed point.
- */
- if (dims == 1) {
- /* 1-D lerp */
- packed_lo = lp_build_lerp(&h16,
- s_fpart_lo,
- neighbors_lo[0][0][0],
- neighbors_lo[0][0][1]);
-
- packed_hi = lp_build_lerp(&h16,
- s_fpart_hi,
- neighbors_hi[0][0][0],
- neighbors_hi[0][0][1]);
- }
- else {
- /* 2-D lerp */
- packed_lo = lp_build_lerp_2d(&h16,
- s_fpart_lo, t_fpart_lo,
- neighbors_lo[0][0][0],
- neighbors_lo[0][0][1],
- neighbors_lo[0][1][0],
- neighbors_lo[0][1][1]);
-
- packed_hi = lp_build_lerp_2d(&h16,
- s_fpart_hi, t_fpart_hi,
- neighbors_hi[0][0][0],
- neighbors_hi[0][0][1],
- neighbors_hi[0][1][0],
- neighbors_hi[0][1][1]);
-
- if (dims >= 3) {
- LLVMValueRef packed_lo2, packed_hi2;
-
- /* lerp in the second z slice */
- packed_lo2 = lp_build_lerp_2d(&h16,
- s_fpart_lo, t_fpart_lo,
- neighbors_lo[1][0][0],
- neighbors_lo[1][0][1],
- neighbors_lo[1][1][0],
- neighbors_lo[1][1][1]);
-
- packed_hi2 = lp_build_lerp_2d(&h16,
- s_fpart_hi, t_fpart_hi,
- neighbors_hi[1][0][0],
- neighbors_hi[1][0][1],
- neighbors_hi[1][1][0],
- neighbors_hi[1][1][1]);
- /* interp between two z slices */
- packed_lo = lp_build_lerp(&h16, r_fpart_lo,
- packed_lo, packed_lo2);
- packed_hi = lp_build_lerp(&h16, r_fpart_hi,
- packed_hi, packed_hi2);
- }
- }
-
- *colors_lo = packed_lo;
- *colors_hi = packed_hi;
+ lp_build_sample_fetch_image_linear(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ s_fpart, t_fpart, r_fpart,
+ colors);
}
LLVMValueRef s,
LLVMValueRef t,
LLVMValueRef r,
+ const LLVMValueRef *offsets,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
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_lo,
- LLVMValueRef *colors_hi)
+ LLVMValueRef colors_var)
{
- LLVMValueRef colors0_lo, colors0_hi;
- LLVMValueRef colors1_lo, colors1_hi;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef size0;
+ LLVMValueRef size1;
+ LLVMValueRef row_stride0_vec = NULL;
+ LLVMValueRef row_stride1_vec = NULL;
+ LLVMValueRef img_stride0_vec = NULL;
+ LLVMValueRef img_stride1_vec = NULL;
+ LLVMValueRef data_ptr0;
+ LLVMValueRef data_ptr1;
+ LLVMValueRef mipoff0 = NULL;
+ LLVMValueRef mipoff1 = NULL;
+ LLVMValueRef colors0;
+ LLVMValueRef colors1;
+
+ /* 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) {
- /* sample the first mipmap level */
lp_build_sample_image_nearest(bld,
- width0_vec, height0_vec, depth0_vec,
+ size0,
row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
- &colors0_lo, &colors0_hi);
-
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* sample the second mipmap level */
- lp_build_sample_image_nearest(bld,
- width1_vec, height1_vec, depth1_vec,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
- &colors1_lo, &colors1_hi);
- }
+ data_ptr0, mipoff0, s, t, r, offsets,
+ &colors0);
}
else {
assert(img_filter == PIPE_TEX_FILTER_LINEAR);
-
- /* sample the first mipmap level */
lp_build_sample_image_linear(bld,
- width0_vec, height0_vec, depth0_vec,
+ size0,
row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
- &colors0_lo, &colors0_hi);
-
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* sample the second mipmap level */
- lp_build_sample_image_linear(bld,
- width1_vec, height1_vec, depth1_vec,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
- &colors1_lo, &colors1_hi);
- }
+ data_ptr0, mipoff0, s, t, r, offsets,
+ &colors0);
}
+ /* Store the first level's colors in the output variables */
+ LLVMBuildStore(builder, colors0, colors_var);
+
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- /* interpolate samples from the two mipmap levels */
- struct lp_build_context h16;
- lp_build_context_init(&h16, bld->builder, lp_type_ufixed(16));
-
- *colors_lo = lp_build_lerp(&h16, lod_fpart,
- colors0_lo, colors1_lo);
- *colors_hi = lp_build_lerp(&h16, lod_fpart,
- colors0_hi, colors1_hi);
- }
- else {
- /* use first/only level's colors */
- *colors_lo = colors0_lo;
- *colors_hi = colors0_hi;
+ LLVMValueRef h16vec_scale = lp_build_const_vec(bld->gallivm,
+ bld->lodf_bld.type, 256.0);
+ LLVMTypeRef i32vec_type = bld->lodi_bld.vec_type;
+ struct lp_build_if_state if_ctx;
+ LLVMValueRef need_lerp;
+ unsigned num_quads = bld->coord_bld.type.length / 4;
+ unsigned i;
+
+ lod_fpart = LLVMBuildFMul(builder, lod_fpart, h16vec_scale, "");
+ lod_fpart = LLVMBuildFPToSI(builder, lod_fpart, i32vec_type, "lod_fpart.fixed16");
+
+ /* need_lerp = lod_fpart > 0 */
+ if (bld->num_lods == 1) {
+ need_lerp = LLVMBuildICmp(builder, LLVMIntSGT,
+ lod_fpart, bld->lodi_bld.zero,
+ "need_lerp");
+ }
+ else {
+ /*
+ * We'll do mip filtering if any of the quads need it.
+ * It might be better to split the vectors here and only fetch/filter
+ * quads which need it.
+ */
+ /*
+ * We 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.
+ * We can however then skip the greater than comparison.
+ */
+ lod_fpart = lp_build_max(&bld->lodi_bld, lod_fpart,
+ bld->lodi_bld.zero);
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, lod_fpart);
+ }
+
+ lp_build_if(&if_ctx, bld->gallivm, need_lerp);
+ {
+ struct lp_build_context u8n_bld;
+
+ lp_build_context_init(&u8n_bld, bld->gallivm, lp_type_unorm(8, bld->vector_width));
+
+ /* 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, s, t, r, offsets,
+ &colors1);
+ }
+ else {
+ lp_build_sample_image_linear(bld,
+ size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, mipoff1, s, t, r, offsets,
+ &colors1);
+ }
+
+ /* interpolate samples from the two mipmap levels */
+
+ if (num_quads == 1 && bld->num_lods == 1) {
+ lod_fpart = LLVMBuildTrunc(builder, lod_fpart, u8n_bld.elem_type, "");
+ lod_fpart = lp_build_broadcast_scalar(&u8n_bld, lod_fpart);
+ }
+ else {
+ unsigned num_chans_per_lod = 4 * bld->coord_type.length / bld->num_lods;
+ LLVMTypeRef tmp_vec_type = LLVMVectorType(u8n_bld.elem_type, bld->lodi_bld.type.length);
+ LLVMValueRef shuffle[LP_MAX_VECTOR_LENGTH];
+
+ /* Take the LSB of lod_fpart */
+ lod_fpart = LLVMBuildTrunc(builder, lod_fpart, tmp_vec_type, "");
+
+ /* Broadcast each lod weight into their respective channels */
+ for (i = 0; i < u8n_bld.type.length; ++i) {
+ shuffle[i] = lp_build_const_int32(bld->gallivm, i / num_chans_per_lod);
+ }
+ lod_fpart = LLVMBuildShuffleVector(builder, lod_fpart, LLVMGetUndef(tmp_vec_type),
+ LLVMConstVector(shuffle, u8n_bld.type.length), "");
+ }
+
+ colors0 = lp_build_lerp(&u8n_bld, lod_fpart,
+ colors0, colors1,
+ LP_BLD_LERP_PRESCALED_WEIGHTS);
+
+ LLVMBuildStore(builder, colors0, colors_var);
+ }
+ lp_build_endif(&if_ctx);
}
}
*/
void
lp_build_sample_aos(struct lp_build_sample_context *bld,
- unsigned unit,
+ unsigned sampler_unit,
LLVMValueRef s,
LLVMValueRef t,
LLVMValueRef r,
- const LLVMValueRef *ddx,
- const LLVMValueRef *ddy,
- LLVMValueRef lod_bias, /* optional */
- LLVMValueRef explicit_lod, /* optional */
- 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,
+ const LLVMValueRef *offsets,
+ LLVMValueRef lod_positive,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
LLVMValueRef texel_out[4])
{
- struct lp_build_context *int_bld = &bld->int_bld;
- LLVMBuilderRef builder = bld->builder;
- 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_ipart = NULL, lod_fpart = NULL;
- LLVMValueRef ilevel0, ilevel1 = 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;
- LLVMValueRef packed, packed_lo, packed_hi;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ 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 dims = bld->dims;
+ LLVMValueRef packed_var, packed;
LLVMValueRef unswizzled[4];
- LLVMValueRef face_ddx[4], face_ddy[4];
- struct lp_build_context h16;
- LLVMTypeRef h16_vec_type;
+ struct lp_build_context u8n_bld;
/* we only support the common/simple wrap modes at this time */
- assert(lp_is_simple_wrap_mode(bld->static_state->wrap_s));
+ assert(lp_is_simple_wrap_mode(bld->static_sampler_state->wrap_s));
if (dims >= 2)
- assert(lp_is_simple_wrap_mode(bld->static_state->wrap_t));
+ assert(lp_is_simple_wrap_mode(bld->static_sampler_state->wrap_t));
if (dims >= 3)
- assert(lp_is_simple_wrap_mode(bld->static_state->wrap_r));
-
-
- /* make 16-bit fixed-pt builder context */
- lp_build_context_init(&h16, builder, lp_type_ufixed(16));
- h16_vec_type = lp_build_vec_type(h16.type);
-
-
- /* cube face selection, compute pre-face coords, etc. */
- 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 */
-
- /* recompute ddx, ddy using the new (s,t) face texcoords */
- face_ddx[0] = lp_build_ddx(&bld->coord_bld, s);
- face_ddx[1] = lp_build_ddx(&bld->coord_bld, t);
- face_ddx[2] = NULL;
- face_ddx[3] = NULL;
- face_ddy[0] = lp_build_ddy(&bld->coord_bld, s);
- face_ddy[1] = lp_build_ddy(&bld->coord_bld, t);
- face_ddy[2] = NULL;
- face_ddy[3] = NULL;
- ddx = face_ddx;
- ddy = face_ddy;
- }
+ assert(lp_is_simple_wrap_mode(bld->static_sampler_state->wrap_r));
- /*
- * Compute the level of detail (float).
- */
- if (min_filter != mag_filter ||
- mip_filter != PIPE_TEX_MIPFILTER_NONE) {
- /* Need to compute lod either to choose mipmap levels or to
- * distinguish between minification/magnification with one mipmap level.
- */
- lp_build_lod_selector(bld, unit, ddx, ddy,
- lod_bias, explicit_lod,
- width, height, depth,
- mip_filter,
- &lod_ipart, &lod_fpart);
- } else {
- lod_ipart = LLVMConstInt(LLVMInt32Type(), 0, 0);
- }
- /*
- * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
- * If mipfilter=linear, also compute the weight between the two
- * mipmap levels: lod_fpart
- */
- switch (mip_filter) {
- default:
- assert(0 && "bad mip_filter value in lp_build_sample_aos()");
- /* fall-through */
- case PIPE_TEX_MIPFILTER_NONE:
- /* always use mip level 0 */
- if (bld->static_state->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, unit, lod_ipart, &ilevel0);
- }
- else {
- ilevel0 = LLVMConstInt(LLVMInt32Type(), 0, 0);
- }
- break;
- case PIPE_TEX_MIPFILTER_NEAREST:
- assert(lod_ipart);
- lp_build_nearest_mip_level(bld, unit, lod_ipart, &ilevel0);
- break;
- case PIPE_TEX_MIPFILTER_LINEAR:
- {
- LLVMValueRef f256 = LLVMConstReal(LLVMFloatType(), 256.0);
- LLVMTypeRef i32_type = LLVMIntType(32);
- LLVMTypeRef i16_type = LLVMIntType(16);
-
- assert(lod_fpart);
-
- lp_build_linear_mip_levels(bld, unit, lod_ipart, &ilevel0, &ilevel1);
-
- lod_fpart = LLVMBuildFMul(builder, lod_fpart, f256, "");
- lod_fpart = LLVMBuildFPToSI(builder, lod_fpart, i32_type, "");
- lod_fpart = LLVMBuildTrunc(builder, lod_fpart, i16_type, "");
- lod_fpart = lp_build_broadcast_scalar(&h16, lod_fpart);
-
- /* the lod_fpart values will be fixed pt values in [0,1) */
- }
- break;
- }
-
- /* compute image size(s) of source mipmap level(s) */
- lp_build_mipmap_level_sizes(bld, dims, width_vec, height_vec, depth_vec,
- ilevel0, ilevel1,
- row_stride_array, img_stride_array,
- &width0_vec, &width1_vec,
- &height0_vec, &height1_vec,
- &depth0_vec, &depth1_vec,
- &row_stride0_vec, &row_stride1_vec,
- &img_stride0_vec, &img_stride1_vec);
+ /* make 8-bit unorm builder context */
+ lp_build_context_init(&u8n_bld, bld->gallivm, lp_type_unorm(8, bld->vector_width));
/*
- * Get pointer(s) to image data for mipmap level(s).
+ * Get/interpolate texture colors.
*/
- 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);
- }
+ packed_var = lp_build_alloca(bld->gallivm, u8n_bld.vec_type, "packed_var");
- /*
- * Get/interpolate texture colors.
- */
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,
- &packed_lo, &packed_hi);
+ /* no need to distinguish between minification and magnification */
+ lp_build_sample_mipmap(bld,
+ min_filter, mip_filter,
+ s, t, r, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ packed_var);
}
else {
/* Emit conditional to choose min image filter or mag image filter
* depending on the lod being > 0 or <= 0, respectively.
*/
- struct lp_build_flow_context *flow_ctx;
struct lp_build_if_state if_ctx;
- LLVMValueRef minify;
-
- flow_ctx = lp_build_flow_create(builder);
- lp_build_flow_scope_begin(flow_ctx);
- packed_lo = LLVMGetUndef(h16_vec_type);
- packed_hi = LLVMGetUndef(h16_vec_type);
-
- lp_build_flow_scope_declare(flow_ctx, &packed_lo);
- lp_build_flow_scope_declare(flow_ctx, &packed_hi);
+ /*
+ * FIXME this should take all lods into account, if some are min
+ * some max probably could hack up the weights in the linear
+ * path with selects to work for nearest.
+ */
+ if (bld->num_lods > 1)
+ lod_positive = LLVMBuildExtractElement(builder, lod_positive,
+ lp_build_const_int32(bld->gallivm, 0), "");
- /* minify = lod >= 0.0 */
- minify = LLVMBuildICmp(builder, LLVMIntSGE,
- lod_ipart, int_bld->zero, "");
+ lod_positive = LLVMBuildTrunc(builder, lod_positive,
+ LLVMInt1TypeInContext(bld->gallivm->context), "");
- lp_build_if(&if_ctx, flow_ctx, builder, minify);
+ lp_build_if(&if_ctx, bld->gallivm, lod_positive);
{
/* 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,
- &packed_lo, &packed_hi);
+ lp_build_sample_mipmap(bld,
+ min_filter, mip_filter,
+ s, t, r, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ packed_var);
}
lp_build_else(&if_ctx);
{
/* Use the magnification filter */
- lp_build_sample_mipmap(bld, mag_filter, PIPE_TEX_MIPFILTER_NONE,
- s, t, r, NULL,
- width_vec, NULL,
- height_vec, NULL,
- depth_vec, NULL,
- row_stride0_vec, NULL,
- img_stride0_vec, NULL,
- data_ptr0, NULL,
- &packed_lo, &packed_hi);
+ lp_build_sample_mipmap(bld,
+ mag_filter, PIPE_TEX_MIPFILTER_NONE,
+ s, t, r, offsets,
+ ilevel0, NULL, NULL,
+ packed_var);
}
lp_build_endif(&if_ctx);
-
- lp_build_flow_scope_end(flow_ctx);
- lp_build_flow_destroy(flow_ctx);
}
- /* combine 'packed_lo', 'packed_hi' into 'packed' */
- {
- struct lp_build_context h16, u8n;
-
- lp_build_context_init(&h16, builder, lp_type_ufixed(16));
- lp_build_context_init(&u8n, builder, lp_type_unorm(8));
-
- packed = lp_build_pack2(builder, h16.type, u8n.type,
- packed_lo, packed_hi);
- }
+ packed = LLVMBuildLoad(builder, packed_var, "");
/*
* Convert to SoA and swizzle.
*/
- lp_build_rgba8_to_f32_soa(builder,
+ lp_build_rgba8_to_fi32_soa(bld->gallivm,
bld->texel_type,
packed, unswizzled);
texel_out[2] = unswizzled[2];
texel_out[3] = unswizzled[3];
}
-
- apply_sampler_swizzle(bld, texel_out);
}
projects / mesa.git / blobdiff