/**
* @file
- * Texture sampling -- SoA.
+ * Texture sampling -- AoS.
*
* @author Jose Fonseca <jfonseca@vmware.com>
* @author Brian Paul <brianp@vmware.com>
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_format.h"
+#include "util/u_cpu_detect.h"
#include "lp_bld_debug.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
lp_build_sample_wrap_nearest_int(struct lp_build_sample_context *bld,
unsigned block_length,
LLVMValueRef coord,
+ LLVMValueRef coord_f,
LLVMValueRef length,
LLVMValueRef stride,
boolean is_pot,
if(is_pot)
coord = LLVMBuildAnd(builder, coord, length_minus_one, "");
else {
- /* Add a bias to the texcoord to handle negative coords */
- LLVMValueRef bias = lp_build_mul_imm(int_coord_bld, length, 1024);
- coord = LLVMBuildAdd(builder, coord, bias, "");
- coord = LLVMBuildURem(builder, coord, length, "");
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
+ 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;
}
+/**
+ * Build LLVM code for texture coord wrapping, for nearest filtering,
+ * for float texcoords.
+ * \param coord the incoming texcoord (s,t,r or q)
+ * \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
+ * \param icoord the texcoord after wrapping, as int
+ */
+static void
+lp_build_sample_wrap_nearest_float(struct lp_build_sample_context *bld,
+ LLVMValueRef coord,
+ LLVMValueRef length,
+ boolean is_pot,
+ unsigned wrap_mode,
+ LLVMValueRef *icoord)
+{
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ LLVMValueRef length_minus_one;
+
+ switch(wrap_mode) {
+ case PIPE_TEX_WRAP_REPEAT:
+ /* take fraction, unnormalize */
+ coord = lp_build_fract_safe(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length);
+ *icoord = lp_build_itrunc(coord_bld, coord);
+ break;
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ length_minus_one = lp_build_sub(coord_bld, length, coord_bld->one);
+ if (bld->static_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length);
+ }
+ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero,
+ length_minus_one);
+ *icoord = lp_build_itrunc(coord_bld, coord);
+ 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);
+ }
+}
+
+
/**
* Build LLVM code for texture coord wrapping, for linear filtering,
* for scaled integer texcoords.
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,
boolean is_pot,
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 weight;
+ LLVMValueRef length_f = lp_build_int_to_float(&bld->coord_bld, length);
+ lp_build_coord_repeat_npot_linear(bld, coord_f,
+ length, length_f,
+ &coord0, &weight);
+ 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, "");
+ weight = lp_build_mul_imm(&bld->coord_bld, weight, 256);
+ *weight_i = lp_build_itrunc(&bld->coord_bld, weight);
+ }
+ 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 = int_coord_bld->zero;
*i1 = int_coord_bld->zero;
- 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) {
coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, "");
}
else {
- /* Add a bias to the texcoord to handle negative coords */
- LLVMValueRef bias = lp_build_mul_imm(int_coord_bld, length, 1024);
- coord0 = LLVMBuildAdd(builder, coord0, bias, "");
- coord0 = LLVMBuildURem(builder, coord0, length, "");
+ LLVMValueRef weight;
+ LLVMValueRef length_f = lp_build_int_to_float(&bld->coord_bld, length);
+ lp_build_coord_repeat_npot_linear(bld, coord_f,
+ length, length_f,
+ &coord0, &weight);
+ weight = lp_build_mul_imm(&bld->coord_bld, weight, 256);
+ *weight_i = lp_build_itrunc(&bld->coord_bld, weight);
}
mask = lp_build_compare(bld->gallivm, int_coord_bld->type,
break;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ /* 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->gallivm, int_coord_bld->type,
}
+/**
+ * Build LLVM code for texture coord wrapping, for linear filtering,
+ * for float 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)
+ * \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
+ * \param coord0 the first texcoord after wrapping, as int
+ * \param coord1 the second texcoord after wrapping, as int
+ * \param weight the filter weight as int (0-255)
+ * \param force_nearest if this coord actually uses nearest filtering
+ */
+static void
+lp_build_sample_wrap_linear_float(struct lp_build_sample_context *bld,
+ unsigned block_length,
+ LLVMValueRef coord,
+ LLVMValueRef length,
+ boolean is_pot,
+ unsigned wrap_mode,
+ LLVMValueRef *coord0,
+ LLVMValueRef *coord1,
+ LLVMValueRef *weight,
+ unsigned force_nearest)
+{
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ 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(coord_bld, length, coord_bld->one);
+
+ switch(wrap_mode) {
+ case PIPE_TEX_WRAP_REPEAT:
+ if (is_pot) {
+ /* mul by size and subtract 0.5 */
+ coord = lp_build_mul(coord_bld, coord, length);
+ if (!force_nearest)
+ coord = lp_build_sub(coord_bld, coord, half);
+ *coord1 = lp_build_add(coord_bld, coord, coord_bld->one);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, coord0, weight);
+ *coord1 = lp_build_ifloor(coord_bld, *coord1);
+ /* repeat wrap */
+ length_minus_one = lp_build_itrunc(coord_bld, length_minus_one);
+ *coord0 = LLVMBuildAnd(builder, *coord0, length_minus_one, "");
+ *coord1 = LLVMBuildAnd(builder, *coord1, length_minus_one, "");
+ }
+ else {
+ LLVMValueRef mask;
+ /* wrap with normalized floats is just fract */
+ coord = lp_build_fract(coord_bld, coord);
+ /* unnormalize */
+ coord = lp_build_mul(coord_bld, coord, length);
+ /*
+ * we avoided the 0.5/length division, have to fix up wrong
+ * edge cases with selects
+ */
+ *coord1 = lp_build_add(coord_bld, coord, half);
+ coord = lp_build_sub(coord_bld, coord, half);
+ *weight = lp_build_fract(coord_bld, coord);
+ mask = lp_build_compare(coord_bld->gallivm, coord_bld->type,
+ PIPE_FUNC_LESS, coord, coord_bld->zero);
+ *coord0 = lp_build_select(coord_bld, mask, length_minus_one, coord);
+ *coord0 = lp_build_itrunc(coord_bld, *coord0);
+ mask = lp_build_compare(coord_bld->gallivm, coord_bld->type,
+ PIPE_FUNC_LESS, *coord1, length);
+ *coord1 = lp_build_select(coord_bld, mask, *coord1, coord_bld->zero);
+ *coord1 = lp_build_itrunc(coord_bld, *coord1);
+ }
+ break;
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ if (bld->static_state->normalized_coords) {
+ /* mul by tex size */
+ coord = lp_build_mul(coord_bld, coord, length);
+ }
+ /* subtract 0.5 */
+ if (!force_nearest) {
+ coord = lp_build_sub(coord_bld, coord, half);
+ }
+ /* clamp to [0, length - 1] */
+ coord = lp_build_min(coord_bld, coord, length_minus_one);
+ coord = lp_build_max(coord_bld, coord, coord_bld->zero);
+ *coord1 = lp_build_add(coord_bld, coord, coord_bld->one);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, coord0, weight);
+ /* coord1 = min(coord1, length-1) */
+ *coord1 = lp_build_min(coord_bld, *coord1, length_minus_one);
+ *coord1 = lp_build_itrunc(coord_bld, *coord1);
+ break;
+ default:
+ assert(0);
+ *coord0 = int_coord_bld->zero;
+ *coord1 = int_coord_bld->zero;
+ *weight = coord_bld->zero;
+ break;
+ }
+ *weight = lp_build_mul_imm(coord_bld, *weight, 256);
+ *weight = lp_build_itrunc(coord_bld, *weight);
+ return;
+}
+
+
+/**
+ * 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_lo,
+ LLVMValueRef *colors_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.
+ */
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef rgba8;
+ struct lp_build_context h16, u8n;
+ LLVMTypeRef u8n_vec_type;
+
+ lp_build_context_init(&h16, bld->gallivm, lp_type_ufixed(16, bld->vector_width));
+ 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);
+
+ 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,
+ bld->texel_type.width,
+ data_ptr, offset);
+
+ rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
+ }
+ else {
+ rgba8 = lp_build_fetch_rgba_aos(bld->gallivm,
+ bld->format_desc,
+ u8n.type,
+ data_ptr, offset,
+ x_subcoord,
+ y_subcoord);
+ }
+
+ /* Expand one 4*rgba8 to two 2*rgba16 */
+ lp_build_unpack2(bld->gallivm, u8n.type, h16.type,
+ rgba8,
+ colors_lo, colors_hi);
+}
+
+
/**
* Sample a single texture image with nearest sampling.
* If sampling a cube texture, r = cube face in [0,5].
{
const unsigned dims = bld->dims;
LLVMBuilderRef builder = bld->gallivm->builder;
- struct lp_build_context i32, h16, u8n;
- LLVMTypeRef i32_vec_type, u8n_vec_type;
+ struct lp_build_context i32;
+ LLVMTypeRef i32_vec_type;
LLVMValueRef i32_c8;
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, bld->gallivm, lp_type_int_vec(32));
- lp_build_context_init(&h16, bld->gallivm, lp_type_ufixed(16));
- lp_build_context_init(&u8n, bld->gallivm, 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(bld->gallivm, i32.type);
- u8n_vec_type = lp_build_vec_type(bld->gallivm, u8n.type);
lp_build_extract_image_sizes(bld,
- bld->int_size_type,
+ &bld->int_size_bld,
bld->int_coord_type,
int_size,
&width_vec,
&height_vec,
&depth_vec);
+ s_float = s; t_float = t; r_float = r;
+
if (bld->static_state->normalized_coords) {
LLVMValueRef scaled_size;
LLVMValueRef flt_size;
/* Do texcoord wrapping, compute texel offset */
lp_build_sample_wrap_nearest_int(bld,
bld->format_desc->block.width,
- s_ipart, width_vec, x_stride,
+ s_ipart, s_float,
+ width_vec, x_stride,
bld->static_state->pot_width,
bld->static_state->wrap_s,
&x_offset, &x_subcoord);
LLVMValueRef y_offset;
lp_build_sample_wrap_nearest_int(bld,
bld->format_desc->block.height,
- t_ipart, height_vec, row_stride_vec,
+ t_ipart, t_float,
+ height_vec, row_stride_vec,
bld->static_state->pot_height,
bld->static_state->wrap_t,
&y_offset, &y_subcoord);
LLVMValueRef z_offset;
lp_build_sample_wrap_nearest_int(bld,
1, /* block length (depth) */
- r_ipart, depth_vec, img_stride_vec,
+ r_ipart, r_float,
+ depth_vec, img_stride_vec,
bld->static_state->pot_depth,
bld->static_state->wrap_r,
&z_offset, &z_subcoord);
}
}
- /*
- * 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.
- */
+ lp_build_sample_fetch_image_nearest(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ colors_lo, colors_hi);
+}
+
+
+/**
+ * Sample a single texture image with nearest sampling.
+ * If sampling a cube texture, r = cube face in [0,5].
+ * Return filtered color as two vectors of 16-bit fixed point values.
+ * Does address calcs (except offsets) with floats.
+ * Useful for AVX which has support for 8x32 floats but not 8x32 ints.
+ */
+static void
+lp_build_sample_image_nearest_afloat(struct lp_build_sample_context *bld,
+ LLVMValueRef int_size,
+ LLVMValueRef row_stride_vec,
+ LLVMValueRef img_stride_vec,
+ LLVMValueRef data_ptr,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef *colors_lo,
+ LLVMValueRef *colors_hi)
{
- LLVMValueRef rgba8;
+ const unsigned dims = bld->dims;
+ LLVMValueRef width_vec, height_vec, depth_vec;
+ LLVMValueRef offset;
+ LLVMValueRef x_subcoord, y_subcoord;
+ LLVMValueRef x_icoord = NULL, y_icoord = NULL, z_icoord = NULL;
+ LLVMValueRef flt_size;
- 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,
- bld->texel_type.width,
- data_ptr, offset);
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, int_size);
+
+ lp_build_extract_image_sizes(bld,
+ &bld->float_size_bld,
+ bld->coord_type,
+ flt_size,
+ &width_vec,
+ &height_vec,
+ &depth_vec);
+
+ /* Do texcoord wrapping */
+ lp_build_sample_wrap_nearest_float(bld,
+ s, width_vec,
+ bld->static_state->pot_width,
+ bld->static_state->wrap_s,
+ &x_icoord);
+
+ if (dims >= 2) {
+ lp_build_sample_wrap_nearest_float(bld,
+ t, height_vec,
+ bld->static_state->pot_height,
+ bld->static_state->wrap_t,
+ &y_icoord);
- rgba8 = LLVMBuildBitCast(builder, rgba8, u8n_vec_type, "");
+ if (dims >= 3) {
+ lp_build_sample_wrap_nearest_float(bld,
+ r, depth_vec,
+ bld->static_state->pot_depth,
+ bld->static_state->wrap_r,
+ &z_icoord);
}
- else {
- rgba8 = lp_build_fetch_rgba_aos(bld->gallivm,
- bld->format_desc,
- u8n.type,
- data_ptr, offset,
- x_subcoord,
- y_subcoord);
+ else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
+ z_icoord = r;
}
-
- /* Expand one 4*rgba8 to two 2*rgba16 */
- lp_build_unpack2(bld->gallivm, u8n.type, h16.type,
- rgba8,
- colors_lo, colors_hi);
}
+
+ /*
+ * From here on we deal with ints, and we should split up the 256bit
+ * vectors manually for better generated code.
+ */
+
+ /*
+ * compute texel offsets -
+ * cannot do offset calc with floats, difficult for block-based formats,
+ * and not enough precision anyway.
+ */
+ lp_build_sample_offset(&bld->int_coord_bld,
+ bld->format_desc,
+ x_icoord, y_icoord,
+ z_icoord,
+ row_stride_vec, img_stride_vec,
+ &offset,
+ &x_subcoord, &y_subcoord);
+
+ lp_build_sample_fetch_image_nearest(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ colors_lo, colors_hi);
}
/**
- * Sample a single texture image with (bi-)(tri-)linear sampling.
+ * Fetch texels for image with linear sampling.
* Return filtered color as two vectors of 16-bit fixed point values.
*/
static void
-lp_build_sample_image_linear(struct lp_build_sample_context *bld,
- LLVMValueRef int_size,
- LLVMValueRef row_stride_vec,
- LLVMValueRef img_stride_vec,
- LLVMValueRef data_ptr,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef *colors_lo,
- LLVMValueRef *colors_hi)
+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_lo,
+ LLVMValueRef *colors_hi)
{
const unsigned dims = bld->dims;
LLVMBuilderRef builder = bld->gallivm->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 width_vec, height_vec, depth_vec;
- LLVMValueRef s_ipart, s_fpart, s_fpart_lo, s_fpart_hi;
- LLVMValueRef t_ipart = NULL, t_fpart = NULL, t_fpart_lo = NULL, t_fpart_hi = NULL;
- LLVMValueRef r_ipart = NULL, r_fpart = NULL, r_fpart_lo = NULL, r_fpart_hi = 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];
+ struct lp_build_context h16, u8n;
+ LLVMTypeRef h16_vec_type, u8n_vec_type;
+ LLVMTypeRef elem_type = LLVMInt32TypeInContext(bld->gallivm->context);
+ LLVMValueRef shuffles_lo[LP_MAX_VECTOR_LENGTH];
+ LLVMValueRef shuffles_hi[LP_MAX_VECTOR_LENGTH];
+ LLVMValueRef shuffle_lo, shuffle_hi;
+ LLVMValueRef s_fpart_lo, s_fpart_hi;
+ LLVMValueRef t_fpart_lo = NULL, t_fpart_hi = NULL;
+ LLVMValueRef r_fpart_lo = NULL, r_fpart_hi = NULL;
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, bld->gallivm, lp_type_int_vec(32));
- lp_build_context_init(&h16, bld->gallivm, lp_type_ufixed(16));
- lp_build_context_init(&u8n, bld->gallivm, lp_type_unorm(8));
-
- i32_vec_type = lp_build_vec_type(bld->gallivm, i32.type);
+ lp_build_context_init(&h16, bld->gallivm, lp_type_ufixed(16, bld->vector_width));
+ lp_build_context_init(&u8n, bld->gallivm, lp_type_unorm(8, bld->vector_width));
h16_vec_type = lp_build_vec_type(bld->gallivm, h16.type);
u8n_vec_type = lp_build_vec_type(bld->gallivm, u8n.type);
- lp_build_extract_image_sizes(bld,
- bld->int_size_type,
- bld->int_coord_type,
- int_size,
- &width_vec,
- &height_vec,
- &depth_vec);
-
- if (bld->static_state->normalized_coords) {
- LLVMValueRef scaled_size;
- LLVMValueRef flt_size;
+ /*
+ * 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, "");
- /* scale size by 256 (8 fractional bits) */
- scaled_size = lp_build_shl_imm(&bld->int_size_bld, int_size, 8);
+ for (j = 0; j < h16.type.length; j += 4) {
+#ifdef PIPE_ARCH_LITTLE_ENDIAN
+ unsigned subindex = 0;
+#else
+ unsigned subindex = 1;
+#endif
+ LLVMValueRef index;
- flt_size = lp_build_int_to_float(&bld->float_size_bld, scaled_size);
+ index = LLVMConstInt(elem_type, j/2 + subindex, 0);
+ for (i = 0; i < 4; ++i)
+ shuffles_lo[j + i] = index;
- 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);
+ index = LLVMConstInt(elem_type, h16.type.length/2 + j/2 + subindex, 0);
+ for (i = 0; i < 4; ++i)
+ shuffles_hi[j + i] = index;
}
- /* convert float to int */
- s = LLVMBuildFPToSI(builder, s, i32_vec_type, "");
- if (dims >= 2)
- t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
- if (dims >= 3)
- r = LLVMBuildFPToSI(builder, r, i32_vec_type, "");
+ shuffle_lo = LLVMConstVector(shuffles_lo, h16.type.length);
+ shuffle_hi = LLVMConstVector(shuffles_hi, h16.type.length);
- /* subtract 0.5 (add -128) */
- i32_c128 = lp_build_const_int_vec(bld->gallivm, i32.type, -128);
- if (!bld->static_state->force_nearest_s) {
- s = LLVMBuildAdd(builder, s, i32_c128, "");
- }
- if (dims >= 2 && !bld->static_state->force_nearest_t) {
- t = LLVMBuildAdd(builder, t, i32_c128, "");
+ 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 = LLVMBuildAdd(builder, r, i32_c128, "");
- }
-
- /* compute floor (shift right 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, "");
-
- /* compute fractional part (AND with 0xff) */
- 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, "");
- if (dims >= 3)
- r_fpart = LLVMBuildAnd(builder, r, i32_c255, "");
-
- /* get pixel, row and image strides */
- 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,
- &x_offset0, &x_offset1,
- &x_subcoord[0], &x_subcoord[1]);
- for (z = 0; z < 2; z++) {
- for (y = 0; y < 2; y++) {
- offset[z][y][0] = x_offset0;
- offset[z][y][1] = x_offset1;
- }
- }
-
- 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,
- &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->int_coord_bld,
- offset[z][0][x], y_offset0);
- 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,
- &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->int_coord_bld,
- offset[0][y][x], z_offset0);
- 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->int_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->int_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 = LLVMInt32TypeInContext(bld->gallivm->context);
- 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,
+ r_fpart_lo = LLVMBuildShuffleVector(builder, r_fpart, h16.undef,
shuffle_lo, "");
- s_fpart_hi = LLVMBuildShuffleVector(builder, s_fpart, h16.undef,
+ r_fpart_hi = LLVMBuildShuffleVector(builder, r_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, "");
- }
}
/*
*colors_hi = packed_hi;
}
+/**
+ * Sample a single texture image with (bi-)(tri-)linear sampling.
+ * Return filtered color as two vectors of 16-bit fixed point values.
+ */
+static void
+lp_build_sample_image_linear(struct lp_build_sample_context *bld,
+ LLVMValueRef int_size,
+ LLVMValueRef row_stride_vec,
+ LLVMValueRef img_stride_vec,
+ LLVMValueRef data_ptr,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef *colors_lo,
+ LLVMValueRef *colors_hi)
+{
+ const unsigned dims = bld->dims;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ struct lp_build_context i32;
+ LLVMTypeRef i32_vec_type;
+ LLVMValueRef i32_c8, i32_c128, i32_c255;
+ 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];
+ unsigned x, y, z;
+
+ lp_build_context_init(&i32, bld->gallivm, lp_type_int_vec(32, bld->vector_width));
+
+ i32_vec_type = lp_build_vec_type(bld->gallivm, i32.type);
+
+ lp_build_extract_image_sizes(bld,
+ &bld->int_size_bld,
+ bld->int_coord_type,
+ int_size,
+ &width_vec,
+ &height_vec,
+ &depth_vec);
+
+ s_float = s; t_float = t; r_float = r;
+
+ if (bld->static_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, "");
+ if (dims >= 2)
+ t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
+ if (dims >= 3)
+ r = LLVMBuildFPToSI(builder, r, i32_vec_type, "");
+
+ /* subtract 0.5 (add -128) */
+ i32_c128 = lp_build_const_int_vec(bld->gallivm, i32.type, -128);
+ if (!bld->static_state->force_nearest_s) {
+ s = LLVMBuildAdd(builder, s, i32_c128, "");
+ }
+ if (dims >= 2 && !bld->static_state->force_nearest_t) {
+ t = LLVMBuildAdd(builder, t, i32_c128, "");
+ }
+ if (dims >= 3) {
+ r = LLVMBuildAdd(builder, r, i32_c128, "");
+ }
+
+ /* compute floor (shift right 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, "");
+
+ /* compute fractional part (AND with 0xff) */
+ 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, "");
+ if (dims >= 3)
+ r_fpart = LLVMBuildAnd(builder, r, i32_c255, "");
+
+ /* get pixel, row and image strides */
+ 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, &s_fpart, s_float,
+ width_vec, x_stride,
+ bld->static_state->pot_width,
+ bld->static_state->wrap_s,
+ &x_offset0, &x_offset1,
+ &x_subcoord[0], &x_subcoord[1]);
+ for (z = 0; z < 2; z++) {
+ for (y = 0; y < 2; y++) {
+ offset[z][y][0] = x_offset0;
+ offset[z][y][1] = x_offset1;
+ }
+ }
+
+ if (dims >= 2) {
+ lp_build_sample_wrap_linear_int(bld,
+ bld->format_desc->block.height,
+ t_ipart, &t_fpart, t_float,
+ height_vec, y_stride,
+ bld->static_state->pot_height,
+ bld->static_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->int_coord_bld,
+ offset[z][0][x], y_offset0);
+ 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, &r_fpart, r_float,
+ depth_vec, z_stride,
+ bld->static_state->pot_depth,
+ bld->static_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->int_coord_bld,
+ offset[0][y][x], z_offset0);
+ 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->int_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->int_coord_bld,
+ offset[0][y][x], z_offset);
+ }
+ }
+ }
+
+ lp_build_sample_fetch_image_linear(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ s_fpart, t_fpart, r_fpart,
+ colors_lo, colors_hi);
+}
+
+
+/**
+ * Sample a single texture image with (bi-)(tri-)linear sampling.
+ * Return filtered color as two vectors of 16-bit fixed point values.
+ * Does address calcs (except offsets) with floats.
+ * Useful for AVX which has support for 8x32 floats but not 8x32 ints.
+ */
+static void
+lp_build_sample_image_linear_afloat(struct lp_build_sample_context *bld,
+ LLVMValueRef int_size,
+ LLVMValueRef row_stride_vec,
+ LLVMValueRef img_stride_vec,
+ LLVMValueRef data_ptr,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef *colors_lo,
+ LLVMValueRef *colors_hi)
+{
+ const unsigned dims = bld->dims;
+ LLVMValueRef width_vec, height_vec, depth_vec;
+ LLVMValueRef s_fpart;
+ LLVMValueRef t_fpart = NULL;
+ LLVMValueRef r_fpart = 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];
+ LLVMValueRef flt_size;
+ LLVMValueRef x_icoord0, x_icoord1;
+ LLVMValueRef y_icoord0, y_icoord1;
+ LLVMValueRef z_icoord0, z_icoord1;
+ unsigned x, y, z;
+
+ flt_size = lp_build_int_to_float(&bld->float_size_bld, int_size);
+
+ lp_build_extract_image_sizes(bld,
+ &bld->float_size_bld,
+ bld->coord_type,
+ flt_size,
+ &width_vec,
+ &height_vec,
+ &depth_vec);
+
+ /* do texcoord wrapping and compute texel offsets */
+ lp_build_sample_wrap_linear_float(bld,
+ bld->format_desc->block.width,
+ s, width_vec,
+ bld->static_state->pot_width,
+ bld->static_state->wrap_s,
+ &x_icoord0, &x_icoord1,
+ &s_fpart,
+ bld->static_state->force_nearest_s);
+
+ if (dims >= 2) {
+ lp_build_sample_wrap_linear_float(bld,
+ bld->format_desc->block.height,
+ t, height_vec,
+ bld->static_state->pot_height,
+ bld->static_state->wrap_t,
+ &y_icoord0, &y_icoord1,
+ &t_fpart,
+ bld->static_state->force_nearest_t);
+
+ if (dims >= 3) {
+ lp_build_sample_wrap_linear_float(bld,
+ bld->format_desc->block.height,
+ r, depth_vec,
+ bld->static_state->pot_depth,
+ bld->static_state->wrap_r,
+ &z_icoord0, &z_icoord1,
+ &r_fpart, 0);
+ }
+ }
+
+ /*
+ * From here on we deal with ints, and we should split up the 256bit
+ * vectors manually for better generated code.
+ */
+
+ /* get pixel, row and image strides */
+ 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;
+
+ /*
+ * compute texel offset -
+ * cannot do offset calc with floats, difficult for block-based formats,
+ * and not enough precision anyway.
+ */
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ bld->format_desc->block.width,
+ x_icoord0, x_stride,
+ &x_offset0, &x_subcoord[0]);
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ bld->format_desc->block.width,
+ x_icoord1, x_stride,
+ &x_offset1, &x_subcoord[1]);
+ for (z = 0; z < 2; z++) {
+ for (y = 0; y < 2; y++) {
+ offset[z][y][0] = x_offset0;
+ offset[z][y][1] = x_offset1;
+ }
+ }
+
+ if (dims >= 2) {
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ bld->format_desc->block.height,
+ y_icoord0, y_stride,
+ &y_offset0, &y_subcoord[0]);
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ bld->format_desc->block.height,
+ y_icoord1, y_stride,
+ &y_offset1, &y_subcoord[1]);
+ for (z = 0; z < 2; z++) {
+ for (x = 0; x < 2; x++) {
+ 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->int_coord_bld,
+ offset[z][1][x], y_offset1);
+ }
+ }
+ }
+
+ if (dims >= 3) {
+ LLVMValueRef z_subcoord[2];
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ 1,
+ z_icoord0, z_stride,
+ &z_offset0, &z_subcoord[0]);
+ lp_build_sample_partial_offset(&bld->int_coord_bld,
+ 1,
+ z_icoord1, z_stride,
+ &z_offset1, &z_subcoord[1]);
+ for (y = 0; y < 2; y++) {
+ for (x = 0; x < 2; x++) {
+ 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->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->int_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->int_coord_bld,
+ offset[0][y][x], z_offset);
+ }
+ }
+ }
+
+ lp_build_sample_fetch_image_linear(bld, data_ptr, offset,
+ x_subcoord, y_subcoord,
+ s_fpart, t_fpart, r_fpart,
+ colors_lo, colors_hi);
+}
+
/**
* Sample the texture/mipmap using given image filter and mip filter.
LLVMBuilderRef builder = bld->gallivm->builder;
LLVMValueRef size0;
LLVMValueRef size1;
- LLVMValueRef row_stride0_vec;
- LLVMValueRef row_stride1_vec;
- LLVMValueRef img_stride0_vec;
- LLVMValueRef img_stride1_vec;
+ 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 colors0_lo, colors0_hi;
&size0,
&row_stride0_vec, &img_stride0_vec);
data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
- if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld,
- size0,
- row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
- &colors0_lo, &colors0_hi);
+ if (util_cpu_caps.has_avx && bld->coord_type.length > 4) {
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest_afloat(bld,
+ size0,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, s, t, r,
+ &colors0_lo, &colors0_hi);
+ }
+ else {
+ assert(img_filter == PIPE_TEX_FILTER_LINEAR);
+ lp_build_sample_image_linear_afloat(bld,
+ size0,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, s, t, r,
+ &colors0_lo, &colors0_hi);
+ }
}
else {
- assert(img_filter == PIPE_TEX_FILTER_LINEAR);
- lp_build_sample_image_linear(bld,
- size0,
- row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
- &colors0_lo, &colors0_hi);
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest(bld,
+ size0,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, s, t, r,
+ &colors0_lo, &colors0_hi);
+ }
+ else {
+ assert(img_filter == PIPE_TEX_FILTER_LINEAR);
+ lp_build_sample_image_linear(bld,
+ size0,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, s, t, r,
+ &colors0_lo, &colors0_hi);
+ }
}
/* Store the first level's colors in the output variables */
LLVMBuildStore(builder, colors0_hi, colors_hi_var);
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- LLVMValueRef h16_scale = lp_build_const_float(bld->gallivm, 256.0);
- LLVMTypeRef i32_type = LLVMIntTypeInContext(bld->gallivm->context, 32);
+ LLVMValueRef h16vec_scale = lp_build_const_vec(bld->gallivm,
+ bld->perquadf_bld.type, 256.0);
+ LLVMTypeRef i32vec_type = lp_build_vec_type(bld->gallivm, bld->perquadi_bld.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, h16_scale, "");
- lod_fpart = LLVMBuildFPToSI(builder, lod_fpart, i32_type, "lod_fpart.fixed16");
+ lod_fpart = LLVMBuildFMul(builder, lod_fpart, h16vec_scale, "");
+ lod_fpart = LLVMBuildFPToSI(builder, lod_fpart, i32vec_type, "lod_fpart.fixed16");
/* need_lerp = lod_fpart > 0 */
- need_lerp = LLVMBuildICmp(builder, LLVMIntSGT,
- lod_fpart, LLVMConstNull(i32_type),
- "need_lerp");
+ if (num_quads == 1) {
+ need_lerp = LLVMBuildICmp(builder, LLVMIntSGT,
+ lod_fpart, bld->perquadi_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->perquadi_bld, lod_fpart,
+ bld->perquadi_bld.zero);
+ need_lerp = lp_build_any_true_range(&bld->perquadi_bld, num_quads, lod_fpart);
+ }
lp_build_if(&if_ctx, bld->gallivm, need_lerp);
{
struct lp_build_context h16_bld;
- lp_build_context_init(&h16_bld, bld->gallivm, lp_type_ufixed(16));
+ lp_build_context_init(&h16_bld, bld->gallivm, lp_type_ufixed(16, bld->vector_width));
/* sample the second mipmap level */
lp_build_mipmap_level_sizes(bld, ilevel1,
&size1,
&row_stride1_vec, &img_stride1_vec);
data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
- if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld,
- size1,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
- &colors1_lo, &colors1_hi);
+
+ if (util_cpu_caps.has_avx && bld->coord_type.length > 4) {
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest_afloat(bld,
+ size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, s, t, r,
+ &colors1_lo, &colors1_hi);
+ }
+ else {
+ lp_build_sample_image_linear_afloat(bld,
+ size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, s, t, r,
+ &colors1_lo, &colors1_hi);
+ }
}
else {
- lp_build_sample_image_linear(bld,
- size1,
- row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
- &colors1_lo, &colors1_hi);
+ if (img_filter == PIPE_TEX_FILTER_NEAREST) {
+ lp_build_sample_image_nearest(bld,
+ size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, s, t, r,
+ &colors1_lo, &colors1_hi);
+ }
+ else {
+ lp_build_sample_image_linear(bld,
+ size1,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, s, t, r,
+ &colors1_lo, &colors1_hi);
+ }
}
/* interpolate samples from the two mipmap levels */
- lod_fpart = LLVMBuildTrunc(builder, lod_fpart, h16_bld.elem_type, "");
- lod_fpart = lp_build_broadcast_scalar(&h16_bld, lod_fpart);
+ if (num_quads == 1) {
+ lod_fpart = LLVMBuildTrunc(builder, lod_fpart, h16_bld.elem_type, "");
+ lod_fpart = lp_build_broadcast_scalar(&h16_bld, lod_fpart);
#if HAVE_LLVM == 0x208
- /* This is a work-around for a bug in LLVM 2.8.
- * Evidently, something goes wrong in the construction of the
- * lod_fpart short[8] vector. Adding this no-effect shuffle seems
- * to force the vector to be properly constructed.
- * Tested with mesa-demos/src/tests/mipmap_limits.c (press t, f).
- */
- {
- LLVMValueRef shuffles[8], shuffle;
- int i;
- assert(h16_bld.type.length <= Elements(shuffles));
- for (i = 0; i < h16_bld.type.length; i++)
- shuffles[i] = lp_build_const_int32(bld->gallivm, 2 * (i & 1));
- shuffle = LLVMConstVector(shuffles, h16_bld.type.length);
- lod_fpart = LLVMBuildShuffleVector(builder,
- lod_fpart, lod_fpart,
- shuffle, "");
- }
+ /* This is a work-around for a bug in LLVM 2.8.
+ * Evidently, something goes wrong in the construction of the
+ * lod_fpart short[8] vector. Adding this no-effect shuffle seems
+ * to force the vector to be properly constructed.
+ * Tested with mesa-demos/src/tests/mipmap_limits.c (press t, f).
+ */
+ {
+ LLVMValueRef shuffles[8], shuffle;
+ assert(h16_bld.type.length <= Elements(shuffles));
+ for (i = 0; i < h16_bld.type.length; i++)
+ shuffles[i] = lp_build_const_int32(bld->gallivm, 2 * (i & 1));
+ shuffle = LLVMConstVector(shuffles, h16_bld.type.length);
+ lod_fpart = LLVMBuildShuffleVector(builder,
+ lod_fpart, lod_fpart,
+ shuffle, "");
+ }
#endif
- colors0_lo = lp_build_lerp(&h16_bld, lod_fpart,
- colors0_lo, colors1_lo);
- colors0_hi = lp_build_lerp(&h16_bld, lod_fpart,
- colors0_hi, colors1_hi);
+ colors0_lo = lp_build_lerp(&h16_bld, lod_fpart,
+ colors0_lo, colors1_lo);
+ colors0_hi = lp_build_lerp(&h16_bld, lod_fpart,
+ colors0_hi, colors1_hi);
+ }
+ else {
+ LLVMValueRef lod_parts[LP_MAX_VECTOR_LENGTH/16];
+ struct lp_type perquadi16_type = bld->perquadi_bld.type;
+ perquadi16_type.width /= 2;
+ perquadi16_type.length *= 2;
+ lod_fpart = LLVMBuildBitCast(builder, lod_fpart,
+ lp_build_vec_type(bld->gallivm,
+ perquadi16_type), "");
+ /* XXX this only works for exactly 2 quads. More quads need shuffle */
+ assert(num_quads == 2);
+ for (i = 0; i < num_quads; i++) {
+ LLVMValueRef indexi2 = lp_build_const_int32(bld->gallivm, i*2);
+ lod_parts[i] = lp_build_extract_broadcast(bld->gallivm,
+ perquadi16_type,
+ h16_bld.type,
+ lod_fpart,
+ indexi2);
+ }
+ colors0_lo = lp_build_lerp(&h16_bld, lod_parts[0],
+ colors0_lo, colors1_lo);
+ colors0_hi = lp_build_lerp(&h16_bld, lod_parts[1],
+ colors0_hi, colors1_hi);
+ }
LLVMBuildStore(builder, colors0_lo, colors_lo_var);
LLVMBuildStore(builder, colors0_hi, colors_hi_var);
LLVMValueRef s,
LLVMValueRef t,
LLVMValueRef r,
- const LLVMValueRef *ddx,
- const LLVMValueRef *ddy,
- LLVMValueRef lod_bias, /* optional */
- LLVMValueRef explicit_lod, /* optional */
+ LLVMValueRef lod_ipart,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
LLVMValueRef texel_out[4])
{
struct lp_build_context *int_bld = &bld->int_bld;
const unsigned min_filter = bld->static_state->min_img_filter;
const unsigned mag_filter = bld->static_state->mag_img_filter;
const unsigned dims = bld->dims;
- LLVMValueRef lod_ipart = NULL, lod_fpart = NULL;
- LLVMValueRef ilevel0, ilevel1 = NULL;
LLVMValueRef packed, packed_lo, packed_hi;
LLVMValueRef unswizzled[4];
- LLVMValueRef face_ddx[4], face_ddy[4];
struct lp_build_context h16_bld;
- LLVMValueRef first_level;
- LLVMValueRef i32t_zero = lp_build_const_int32(bld->gallivm, 0);
/* we only support the common/simple wrap modes at this time */
assert(lp_is_simple_wrap_mode(bld->static_state->wrap_s));
/* make 16-bit fixed-pt builder context */
- lp_build_context_init(&h16_bld, bld->gallivm, lp_type_ufixed(16));
-
- /* 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_scalar_ddx(&bld->coord_bld, s);
- face_ddx[1] = lp_build_scalar_ddx(&bld->coord_bld, t);
- face_ddx[2] = NULL;
- face_ddx[3] = NULL;
- face_ddy[0] = lp_build_scalar_ddy(&bld->coord_bld, s);
- face_ddy[1] = lp_build_scalar_ddy(&bld->coord_bld, t);
- face_ddy[2] = NULL;
- face_ddy[3] = NULL;
- ddx = face_ddx;
- ddy = face_ddy;
- }
-
- /*
- * 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,
- mip_filter,
- &lod_ipart, &lod_fpart);
- } else {
- lod_ipart = i32t_zero;
- }
-
- /*
- * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
- */
- 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 {
- first_level = bld->dynamic_state->first_level(bld->dynamic_state,
- bld->gallivm, unit);
- ilevel0 = first_level;
- }
- 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:
- assert(lod_ipart);
- assert(lod_fpart);
- lp_build_linear_mip_levels(bld, unit,
- lod_ipart, &lod_fpart,
- &ilevel0, &ilevel1);
- break;
- }
+ lp_build_context_init(&h16_bld, bld->gallivm, lp_type_ufixed(16, bld->vector_width));
/*
* Get/interpolate texture colors.
packed_hi = lp_build_alloca(bld->gallivm, h16_bld.vec_type, "packed_hi");
if (min_filter == mag_filter) {
- /* no need to distinquish between minification and magnification */
+ /* no need to distinguish between minification and magnification */
lp_build_sample_mipmap(bld,
min_filter, mip_filter,
s, t, r,
* into 'packed'
*/
packed = lp_build_pack2(bld->gallivm,
- h16_bld.type, lp_type_unorm(8),
+ h16_bld.type, lp_type_unorm(8, bld->vector_width),
LLVMBuildLoad(builder, packed_lo, ""),
LLVMBuildLoad(builder, packed_hi, ""));
projects / mesa.git / blobdiff