#include "util/u_math.h"
#include "util/u_format.h"
#include "util/u_cpu_detect.h"
+#include "util/u_format_rgb9e5.h"
#include "lp_bld_debug.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
*/
static void
lp_build_sample_texel_soa(struct lp_build_sample_context *bld,
- unsigned unit,
LLVMValueRef width,
LLVMValueRef height,
LLVMValueRef depth,
LLVMValueRef y_stride,
LLVMValueRef z_stride,
LLVMValueRef data_ptr,
+ LLVMValueRef mipoffsets,
LLVMValueRef texel_out[4])
{
- const struct lp_sampler_static_state *static_state = bld->static_state;
+ const struct lp_static_sampler_state *static_state = bld->static_sampler_state;
const unsigned dims = bld->dims;
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
LLVMBuilderRef builder = bld->gallivm->builder;
bld->format_desc,
x, y, z, y_stride, z_stride,
&offset, &i, &j);
+ if (mipoffsets) {
+ offset = lp_build_add(&bld->int_coord_bld, offset, mipoffsets);
+ }
if (use_border) {
/* If we can sample the border color, it means that texcoords may
bld->texel_type,
data_ptr, offset,
i, j,
+ bld->cache,
texel_out);
/*
*/
if (use_border) {
- /* select texel color or border color depending on use_border */
- LLVMValueRef border_color_ptr =
- bld->dynamic_state->border_color(bld->dynamic_state,
- bld->gallivm, unit);
+ /* select texel color or border color depending on use_border. */
+ const struct util_format_description *format_desc = bld->format_desc;
int chan;
+ struct lp_type border_type = bld->texel_type;
+ border_type.length = 4;
+ /*
+ * Only replace channels which are actually present. The others should
+ * get optimized away eventually by sampler_view swizzle anyway but it's
+ * easier too.
+ */
for (chan = 0; chan < 4; chan++) {
- LLVMValueRef border_chan =
- lp_build_array_get(bld->gallivm, border_color_ptr,
- lp_build_const_int32(bld->gallivm, chan));
- LLVMValueRef border_chan_vec =
- lp_build_broadcast_scalar(&bld->float_vec_bld, border_chan);
- texel_out[chan] = lp_build_select(&bld->texel_bld, use_border,
- border_chan_vec, texel_out[chan]);
+ unsigned chan_s;
+ /* reverse-map channel... */
+ for (chan_s = 0; chan_s < 4; chan_s++) {
+ if (chan_s == format_desc->swizzle[chan]) {
+ break;
+ }
+ }
+ if (chan_s <= 3) {
+ /* use the already clamped color */
+ LLVMValueRef idx = lp_build_const_int32(bld->gallivm, chan);
+ LLVMValueRef border_chan;
+
+ border_chan = lp_build_extract_broadcast(bld->gallivm,
+ border_type,
+ bld->texel_type,
+ bld->border_color_clamped,
+ idx);
+ texel_out[chan] = lp_build_select(&bld->texel_bld, use_border,
+ border_chan, texel_out[chan]);
+ }
}
}
}
LLVMValueRef coord,
LLVMValueRef length,
LLVMValueRef length_f,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode,
LLVMValueRef *x0_out,
/* mul by size and subtract 0.5 */
coord = lp_build_mul(coord_bld, coord, length_f);
coord = lp_build_sub(coord_bld, coord, half);
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* convert to int, compute lerp weight */
lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
}
else {
LLVMValueRef mask;
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
lp_build_coord_repeat_npot_linear(bld, coord,
length, length_f,
&coord0, &weight);
break;
case PIPE_TEX_WRAP_CLAMP:
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* clamp to [0, length] */
coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f);
struct lp_build_context abs_coord_bld = bld->coord_bld;
abs_coord_bld.type.sign = FALSE;
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* mul by tex size */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+
/* clamp to length max */
coord = lp_build_min(coord_bld, coord, length_f);
/* subtract 0.5 */
}
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- {
- LLVMValueRef min;
- if (bld->static_state->normalized_coords) {
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
- }
- /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */
- coord = lp_build_sub(coord_bld, coord, half);
- min = lp_build_const_vec(bld->gallivm, coord_bld->type, -1.0F);
- coord = lp_build_clamp(coord_bld, coord, min, length_f);
- /* convert to int, compute lerp weight */
- lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
- coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ }
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
}
+ /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */
+ /* can skip clamp (though might not work for very large coord values */
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* compute mirror function */
coord = lp_build_coord_mirror(bld, coord);
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
- coord = lp_build_abs(coord_bld, coord);
-
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
/* clamp to [0, length] */
coord = lp_build_min(coord_bld, coord, length_f);
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
{
- LLVMValueRef min, max;
struct lp_build_context abs_coord_bld = bld->coord_bld;
abs_coord_bld.type.sign = FALSE;
- coord = lp_build_abs(coord_bld, coord);
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
- /* clamp to [0.5, length - 0.5] */
- min = half;
- max = lp_build_sub(coord_bld, length_f, min);
- coord = lp_build_clamp(coord_bld, coord, min, max);
-
+ /* clamp to length max */
+ coord = lp_build_min(coord_bld, coord, length_f);
+ /* subtract 0.5 */
coord = lp_build_sub(coord_bld, coord, half);
+ /* clamp to [0, length - 0.5] */
+ coord = lp_build_max(coord_bld, coord, coord_bld->zero);
/* convert to int, compute lerp weight */
lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight);
coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
}
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
{
- coord = lp_build_abs(coord_bld, coord);
-
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
/* was: clamp to [-0.5, length + 0.5] then sub 0.5 */
- /* skip -0.5 clamp (always positive), do sub first */
+ /* skip clamp - always positive, and other side
+ only potentially matters for very large coords */
coord = lp_build_sub(coord_bld, coord, half);
- coord = lp_build_min(coord_bld, coord, length_f);
/* convert to int, compute lerp weight */
lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
* Build LLVM code for texture wrap mode for nearest filtering.
* \param coord the incoming texcoord (nominally in [0,1])
* \param length the texture size along one dimension, as int vector
+ * \param length_f the texture size along one dimension, as float vector
+ * \param offset texel offset along one dimension (as int vector)
* \param is_pot if TRUE, length is a power of two
* \param wrap_mode one of PIPE_TEX_WRAP_x
*/
LLVMValueRef coord,
LLVMValueRef length,
LLVMValueRef length_f,
+ LLVMValueRef offset,
boolean is_pot,
unsigned wrap_mode)
{
if (is_pot) {
coord = lp_build_mul(coord_bld, coord, length_f);
icoord = lp_build_ifloor(coord_bld, coord);
+ if (offset) {
+ icoord = lp_build_add(int_coord_bld, icoord, offset);
+ }
icoord = LLVMBuildAnd(builder, icoord, length_minus_one, "");
}
else {
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* take fraction, unnormalize */
coord = lp_build_fract_safe(coord_bld, coord);
coord = lp_build_mul(coord_bld, coord, length_f);
case PIPE_TEX_WRAP_CLAMP:
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* floor */
/* use itrunc instead since we clamp to 0 anyway */
icoord = lp_build_itrunc(coord_bld, coord);
break;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
- /* Note: this is the same as CLAMP_TO_EDGE, except min = -1 */
- {
- LLVMValueRef min, max;
-
- if (bld->static_state->normalized_coords) {
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
- }
-
- icoord = lp_build_ifloor(coord_bld, coord);
-
- /* clamp to [-1, length] */
- min = lp_build_negate(int_coord_bld, int_coord_bld->one);
- max = length;
- icoord = lp_build_clamp(int_coord_bld, icoord, min, max);
+ if (bld->static_sampler_state->normalized_coords) {
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ }
+ /* no clamp necessary, border masking will handle this */
+ icoord = lp_build_ifloor(coord_bld, coord);
+ if (offset) {
+ icoord = lp_build_add(int_coord_bld, icoord, offset);
}
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
/* compute mirror function */
coord = lp_build_coord_mirror(bld, coord);
/* scale coord to length */
- assert(bld->static_state->normalized_coords);
+ assert(bld->static_sampler_state->normalized_coords);
coord = lp_build_mul(coord_bld, coord, length_f);
/* itrunc == ifloor here */
case PIPE_TEX_WRAP_MIRROR_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
- coord = lp_build_abs(coord_bld, coord);
-
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
/* itrunc == ifloor here */
icoord = lp_build_itrunc(coord_bld, coord);
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
- coord = lp_build_abs(coord_bld, coord);
-
- if (bld->static_state->normalized_coords) {
+ if (bld->static_sampler_state->normalized_coords) {
/* scale coord to length */
coord = lp_build_mul(coord_bld, coord, length_f);
}
+ if (offset) {
+ offset = lp_build_int_to_float(coord_bld, offset);
+ coord = lp_build_add(coord_bld, coord, offset);
+ }
+ coord = lp_build_abs(coord_bld, coord);
/* itrunc == ifloor here */
icoord = lp_build_itrunc(coord_bld, coord);
-
- /* clamp to [0, length] */
- icoord = lp_build_min(int_coord_bld, icoord, length);
break;
default:
}
+/**
+ * Do shadow test/comparison.
+ * \param p shadow ref value
+ * \param texel the texel to compare against
+ */
+static LLVMValueRef
+lp_build_sample_comparefunc(struct lp_build_sample_context *bld,
+ LLVMValueRef p,
+ LLVMValueRef texel)
+{
+ struct lp_build_context *texel_bld = &bld->texel_bld;
+ LLVMValueRef res;
+
+ if (0) {
+ //lp_build_print_value(bld->gallivm, "shadow cmp coord", p);
+ lp_build_print_value(bld->gallivm, "shadow cmp texel", texel);
+ }
+
+ /* result = (p FUNC texel) ? 1 : 0 */
+ /*
+ * honor d3d10 floating point rules here, which state that comparisons
+ * are ordered except NOT_EQUAL which is unordered.
+ */
+ if (bld->static_sampler_state->compare_func != PIPE_FUNC_NOTEQUAL) {
+ res = lp_build_cmp_ordered(texel_bld, bld->static_sampler_state->compare_func,
+ p, texel);
+ }
+ else {
+ res = lp_build_cmp(texel_bld, bld->static_sampler_state->compare_func,
+ p, texel);
+ }
+ return res;
+}
+
+
/**
* Generate code to sample a mipmap level with nearest filtering.
* If sampling a cube texture, r = cube face in [0,5].
*/
static void
lp_build_sample_image_nearest(struct lp_build_sample_context *bld,
- unsigned unit,
LLVMValueRef size,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ LLVMValueRef mipoffsets,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
LLVMValueRef colors_out[4])
{
const unsigned dims = bld->dims;
LLVMValueRef flt_width_vec;
LLVMValueRef flt_height_vec;
LLVMValueRef flt_depth_vec;
- LLVMValueRef x, y, z;
+ LLVMValueRef x, y = NULL, z = NULL;
lp_build_extract_image_sizes(bld,
- bld->int_size_type,
+ &bld->int_size_bld,
bld->int_coord_type,
size,
&width_vec, &height_vec, &depth_vec);
flt_size = lp_build_int_to_float(&bld->float_size_bld, size);
lp_build_extract_image_sizes(bld,
- bld->float_size_type,
+ &bld->float_size_bld,
bld->coord_type,
flt_size,
&flt_width_vec, &flt_height_vec, &flt_depth_vec);
/*
* Compute integer texcoords.
*/
- x = lp_build_sample_wrap_nearest(bld, s, width_vec, flt_width_vec,
- bld->static_state->pot_width,
- bld->static_state->wrap_s);
+ x = lp_build_sample_wrap_nearest(bld, coords[0], width_vec,
+ flt_width_vec, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s);
lp_build_name(x, "tex.x.wrapped");
if (dims >= 2) {
- y = lp_build_sample_wrap_nearest(bld, t, height_vec, flt_height_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_t);
+ y = lp_build_sample_wrap_nearest(bld, coords[1], height_vec,
+ flt_height_vec, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t);
lp_build_name(y, "tex.y.wrapped");
if (dims == 3) {
- z = lp_build_sample_wrap_nearest(bld, r, depth_vec, flt_depth_vec,
- bld->static_state->pot_depth,
- bld->static_state->wrap_r);
+ z = lp_build_sample_wrap_nearest(bld, coords[2], depth_vec,
+ flt_depth_vec, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r);
lp_build_name(z, "tex.z.wrapped");
}
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- z = r;
+ }
+ if (has_layer_coord(bld->static_texture_state->target)) {
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /* add cube layer to face */
+ z = lp_build_add(&bld->int_coord_bld, coords[2], coords[3]);
}
else {
- z = NULL;
+ z = coords[2];
}
- }
- else {
- y = z = NULL;
+ lp_build_name(z, "tex.z.layer");
}
/*
* Get texture colors.
*/
- lp_build_sample_texel_soa(bld, unit,
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
x, y, z,
row_stride_vec, img_stride_vec,
- data_ptr, colors_out);
+ data_ptr, mipoffsets, colors_out);
+
+ if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) {
+ LLVMValueRef cmpval;
+ cmpval = lp_build_sample_comparefunc(bld, coords[4], colors_out[0]);
+ /* this is really just a AND 1.0, cmpval but llvm is clever enough */
+ colors_out[0] = lp_build_select(&bld->texel_bld, cmpval,
+ bld->texel_bld.one, bld->texel_bld.zero);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
+ }
+
}
+/**
+ * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly.
+ */
+static LLVMValueRef
+lp_build_masklerp(struct lp_build_context *bld,
+ LLVMValueRef weight,
+ LLVMValueRef mask0,
+ LLVMValueRef mask1)
+{
+ struct gallivm_state *gallivm = bld->gallivm;
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMValueRef weight2;
+
+ weight2 = lp_build_sub(bld, bld->one, weight);
+ weight = LLVMBuildBitCast(builder, weight,
+ lp_build_int_vec_type(gallivm, bld->type), "");
+ weight2 = LLVMBuildBitCast(builder, weight2,
+ lp_build_int_vec_type(gallivm, bld->type), "");
+ weight = LLVMBuildAnd(builder, weight, mask1, "");
+ weight2 = LLVMBuildAnd(builder, weight2, mask0, "");
+ weight = LLVMBuildBitCast(builder, weight, bld->vec_type, "");
+ weight2 = LLVMBuildBitCast(builder, weight2, bld->vec_type, "");
+ return lp_build_add(bld, weight, weight2);
+}
+
+/**
+ * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly.
+ */
+static LLVMValueRef
+lp_build_masklerp2d(struct lp_build_context *bld,
+ LLVMValueRef weight0,
+ LLVMValueRef weight1,
+ LLVMValueRef mask00,
+ LLVMValueRef mask01,
+ LLVMValueRef mask10,
+ LLVMValueRef mask11)
+{
+ LLVMValueRef val0 = lp_build_masklerp(bld, weight0, mask00, mask01);
+ LLVMValueRef val1 = lp_build_masklerp(bld, weight0, mask10, mask11);
+ return lp_build_lerp(bld, weight1, val0, val1, 0);
+}
+
+/*
+ * this is a bit excessive code for something OpenGL just recommends
+ * but does not require.
+ */
+#define ACCURATE_CUBE_CORNERS 1
+
/**
* Generate code to sample a mipmap level with linear filtering.
* If sampling a cube texture, r = cube face in [0,5].
+ * If linear_mask is present, only pixels having their mask set
+ * will receive linear filtering, the rest will use nearest.
*/
static void
lp_build_sample_image_linear(struct lp_build_sample_context *bld,
- unsigned unit,
+ boolean is_gather,
LLVMValueRef size,
+ LLVMValueRef linear_mask,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ LLVMValueRef mipoffsets,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
LLVMValueRef colors_out[4])
{
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ struct lp_build_context *ivec_bld = &bld->int_coord_bld;
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ struct lp_build_context *texel_bld = &bld->texel_bld;
const unsigned dims = bld->dims;
LLVMValueRef width_vec;
LLVMValueRef height_vec;
LLVMValueRef flt_width_vec;
LLVMValueRef flt_height_vec;
LLVMValueRef flt_depth_vec;
- LLVMValueRef x0, y0, z0, x1, y1, z1;
- LLVMValueRef s_fpart, t_fpart, r_fpart;
+ LLVMValueRef fall_off[4], have_corners;
+ LLVMValueRef z1 = NULL;
+ LLVMValueRef z00 = NULL, z01 = NULL, z10 = NULL, z11 = NULL;
+ LLVMValueRef x00 = NULL, x01 = NULL, x10 = NULL, x11 = NULL;
+ LLVMValueRef y00 = NULL, y01 = NULL, y10 = NULL, y11 = NULL;
+ LLVMValueRef s_fpart, t_fpart = NULL, r_fpart = NULL;
+ LLVMValueRef xs[4], ys[4], zs[4];
LLVMValueRef neighbors[2][2][4];
- int chan;
+ int chan, texel_index;
+ boolean seamless_cube_filter, accurate_cube_corners;
+
+ seamless_cube_filter = (bld->static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) &&
+ bld->static_sampler_state->seamless_cube_map;
+ /*
+ * XXX I don't know how this is really supposed to work with gather. From GL
+ * spec wording (not gather specific) it sounds like the 4th missing texel
+ * should be an average of the other 3, hence for gather could return this.
+ * This is however NOT how the code here works, which just fixes up the
+ * weights used for filtering instead. And of course for gather there is
+ * no filter to tweak...
+ */
+ accurate_cube_corners = ACCURATE_CUBE_CORNERS && seamless_cube_filter &&
+ !is_gather;
lp_build_extract_image_sizes(bld,
- bld->int_size_type,
+ &bld->int_size_bld,
bld->int_coord_type,
size,
&width_vec, &height_vec, &depth_vec);
flt_size = lp_build_int_to_float(&bld->float_size_bld, size);
lp_build_extract_image_sizes(bld,
- bld->float_size_type,
+ &bld->float_size_bld,
bld->coord_type,
flt_size,
&flt_width_vec, &flt_height_vec, &flt_depth_vec);
/*
* Compute integer texcoords.
*/
- lp_build_sample_wrap_linear(bld, s, width_vec, flt_width_vec,
- bld->static_state->pot_width,
- bld->static_state->wrap_s,
- &x0, &x1, &s_fpart);
- lp_build_name(x0, "tex.x0.wrapped");
- lp_build_name(x1, "tex.x1.wrapped");
- if (dims >= 2) {
- lp_build_sample_wrap_linear(bld, t, height_vec, flt_height_vec,
- bld->static_state->pot_height,
- bld->static_state->wrap_t,
- &y0, &y1, &t_fpart);
- lp_build_name(y0, "tex.y0.wrapped");
- lp_build_name(y1, "tex.y1.wrapped");
+ if (!seamless_cube_filter) {
+ lp_build_sample_wrap_linear(bld, coords[0], width_vec,
+ flt_width_vec, offsets[0],
+ bld->static_texture_state->pot_width,
+ bld->static_sampler_state->wrap_s,
+ &x00, &x01, &s_fpart);
+ lp_build_name(x00, "tex.x0.wrapped");
+ lp_build_name(x01, "tex.x1.wrapped");
+ x10 = x00;
+ x11 = x01;
- if (dims == 3) {
- lp_build_sample_wrap_linear(bld, r, depth_vec, flt_depth_vec,
- bld->static_state->pot_depth,
- bld->static_state->wrap_r,
- &z0, &z1, &r_fpart);
- lp_build_name(z0, "tex.z0.wrapped");
- lp_build_name(z1, "tex.z1.wrapped");
+ if (dims >= 2) {
+ lp_build_sample_wrap_linear(bld, coords[1], height_vec,
+ flt_height_vec, offsets[1],
+ bld->static_texture_state->pot_height,
+ bld->static_sampler_state->wrap_t,
+ &y00, &y10, &t_fpart);
+ lp_build_name(y00, "tex.y0.wrapped");
+ lp_build_name(y10, "tex.y1.wrapped");
+ y01 = y00;
+ y11 = y10;
+
+ if (dims == 3) {
+ lp_build_sample_wrap_linear(bld, coords[2], depth_vec,
+ flt_depth_vec, offsets[2],
+ bld->static_texture_state->pot_depth,
+ bld->static_sampler_state->wrap_r,
+ &z00, &z1, &r_fpart);
+ z01 = z10 = z11 = z00;
+ lp_build_name(z00, "tex.z0.wrapped");
+ lp_build_name(z1, "tex.z1.wrapped");
+ }
+ }
+ if (has_layer_coord(bld->static_texture_state->target)) {
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /* add cube layer to face */
+ z00 = z01 = z10 = z11 = z1 =
+ lp_build_add(&bld->int_coord_bld, coords[2], coords[3]);
+ }
+ else {
+ z00 = z01 = z10 = z11 = z1 = coords[2]; /* cube face or layer */
+ }
+ lp_build_name(z00, "tex.z0.layer");
+ lp_build_name(z1, "tex.z1.layer");
+ }
+ }
+ else {
+ struct lp_build_if_state edge_if;
+ LLVMTypeRef int1t;
+ LLVMValueRef new_faces[4], new_xcoords[4][2], new_ycoords[4][2];
+ LLVMValueRef coord, have_edge, have_corner;
+ LLVMValueRef fall_off_ym_notxm, fall_off_ym_notxp, fall_off_x, fall_off_y;
+ LLVMValueRef fall_off_yp_notxm, fall_off_yp_notxp;
+ LLVMValueRef x0, x1, y0, y1, y0_clamped, y1_clamped;
+ LLVMValueRef face = coords[2];
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5f);
+ LLVMValueRef length_minus_one = lp_build_sub(ivec_bld, width_vec, ivec_bld->one);
+ /* XXX drop height calcs. Could (should) do this without seamless filtering too */
+ height_vec = width_vec;
+ flt_height_vec = flt_width_vec;
+
+ /* XXX the overflow logic is actually sort of duplicated with trilinear,
+ * since an overflow in one mip should also have a corresponding overflow
+ * in another.
+ */
+ /* should always have normalized coords, and offsets are undefined */
+ assert(bld->static_sampler_state->normalized_coords);
+ coord = lp_build_mul(coord_bld, coords[0], flt_width_vec);
+ /* instead of clamp, build mask if overflowed */
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* convert to int, compute lerp weight */
+ /* not ideal with AVX (and no AVX2) */
+ lp_build_ifloor_fract(coord_bld, coord, &x0, &s_fpart);
+ x1 = lp_build_add(ivec_bld, x0, ivec_bld->one);
+ coord = lp_build_mul(coord_bld, coords[1], flt_height_vec);
+ coord = lp_build_sub(coord_bld, coord, half);
+ lp_build_ifloor_fract(coord_bld, coord, &y0, &t_fpart);
+ y1 = lp_build_add(ivec_bld, y0, ivec_bld->one);
+
+ fall_off[0] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, x0, ivec_bld->zero);
+ fall_off[1] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, x1, length_minus_one);
+ fall_off[2] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, y0, ivec_bld->zero);
+ fall_off[3] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, y1, length_minus_one);
+
+ fall_off_x = lp_build_or(ivec_bld, fall_off[0], fall_off[1]);
+ fall_off_y = lp_build_or(ivec_bld, fall_off[2], fall_off[3]);
+ have_edge = lp_build_or(ivec_bld, fall_off_x, fall_off_y);
+ have_edge = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_edge);
+
+ /* needed for accurate corner filtering branch later, rely on 0 init */
+ int1t = LLVMInt1TypeInContext(bld->gallivm->context);
+ have_corners = lp_build_alloca(bld->gallivm, int1t, "have_corner");
+
+ for (texel_index = 0; texel_index < 4; texel_index++) {
+ xs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "xs");
+ ys[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "ys");
+ zs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "zs");
+ }
+
+ lp_build_if(&edge_if, bld->gallivm, have_edge);
+
+ have_corner = lp_build_and(ivec_bld, fall_off_x, fall_off_y);
+ have_corner = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_corner);
+ LLVMBuildStore(builder, have_corner, have_corners);
+
+ /*
+ * Need to feed clamped values here for cheap corner handling,
+ * but only for y coord (as when falling off both edges we only
+ * fall off the x one) - this should be sufficient.
+ */
+ y0_clamped = lp_build_max(ivec_bld, y0, ivec_bld->zero);
+ y1_clamped = lp_build_min(ivec_bld, y1, length_minus_one);
+
+ /*
+ * Get all possible new coords.
+ */
+ lp_build_cube_new_coords(ivec_bld, face,
+ x0, x1, y0_clamped, y1_clamped,
+ length_minus_one,
+ new_faces, new_xcoords, new_ycoords);
+
+ /* handle fall off x-, x+ direction */
+ /* determine new coords, face (not both fall_off vars can be true at same time) */
+ x00 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][0], x0);
+ y00 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][0], y0_clamped);
+ x10 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][1], x0);
+ y10 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][1], y1_clamped);
+ x01 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][0], x1);
+ y01 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][0], y0_clamped);
+ x11 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][1], x1);
+ y11 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][1], y1_clamped);
+
+ z00 = z10 = lp_build_select(ivec_bld, fall_off[0], new_faces[0], face);
+ z01 = z11 = lp_build_select(ivec_bld, fall_off[1], new_faces[1], face);
+
+ /* handle fall off y-, y+ direction */
+ /*
+ * Cheap corner logic: just hack up things so a texel doesn't fall
+ * off both sides (which means filter weights will be wrong but we'll only
+ * use valid texels in the filter).
+ * This means however (y) coords must additionally be clamped (see above).
+ * This corner handling should be fully OpenGL (but not d3d10) compliant.
+ */
+ fall_off_ym_notxm = lp_build_andnot(ivec_bld, fall_off[2], fall_off[0]);
+ fall_off_ym_notxp = lp_build_andnot(ivec_bld, fall_off[2], fall_off[1]);
+ fall_off_yp_notxm = lp_build_andnot(ivec_bld, fall_off[3], fall_off[0]);
+ fall_off_yp_notxp = lp_build_andnot(ivec_bld, fall_off[3], fall_off[1]);
+
+ x00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_xcoords[2][0], x00);
+ y00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_ycoords[2][0], y00);
+ x01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_xcoords[2][1], x01);
+ y01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_ycoords[2][1], y01);
+ x10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_xcoords[3][0], x10);
+ y10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_ycoords[3][0], y10);
+ x11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_xcoords[3][1], x11);
+ y11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_ycoords[3][1], y11);
+
+ z00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_faces[2], z00);
+ z01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_faces[2], z01);
+ z10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_faces[3], z10);
+ z11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_faces[3], z11);
+
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /* now can add cube layer to face (per sample) */
+ z00 = lp_build_add(ivec_bld, z00, coords[3]);
+ z01 = lp_build_add(ivec_bld, z01, coords[3]);
+ z10 = lp_build_add(ivec_bld, z10, coords[3]);
+ z11 = lp_build_add(ivec_bld, z11, coords[3]);
}
- else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
- z0 = z1 = r; /* cube face */
- r_fpart = NULL;
+
+ LLVMBuildStore(builder, x00, xs[0]);
+ LLVMBuildStore(builder, x01, xs[1]);
+ LLVMBuildStore(builder, x10, xs[2]);
+ LLVMBuildStore(builder, x11, xs[3]);
+ LLVMBuildStore(builder, y00, ys[0]);
+ LLVMBuildStore(builder, y01, ys[1]);
+ LLVMBuildStore(builder, y10, ys[2]);
+ LLVMBuildStore(builder, y11, ys[3]);
+ LLVMBuildStore(builder, z00, zs[0]);
+ LLVMBuildStore(builder, z01, zs[1]);
+ LLVMBuildStore(builder, z10, zs[2]);
+ LLVMBuildStore(builder, z11, zs[3]);
+
+ lp_build_else(&edge_if);
+
+ LLVMBuildStore(builder, x0, xs[0]);
+ LLVMBuildStore(builder, x1, xs[1]);
+ LLVMBuildStore(builder, x0, xs[2]);
+ LLVMBuildStore(builder, x1, xs[3]);
+ LLVMBuildStore(builder, y0, ys[0]);
+ LLVMBuildStore(builder, y0, ys[1]);
+ LLVMBuildStore(builder, y1, ys[2]);
+ LLVMBuildStore(builder, y1, ys[3]);
+ if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) {
+ LLVMValueRef cube_layer = lp_build_add(ivec_bld, face, coords[3]);
+ LLVMBuildStore(builder, cube_layer, zs[0]);
+ LLVMBuildStore(builder, cube_layer, zs[1]);
+ LLVMBuildStore(builder, cube_layer, zs[2]);
+ LLVMBuildStore(builder, cube_layer, zs[3]);
}
else {
- z0 = z1 = NULL;
- r_fpart = NULL;
+ LLVMBuildStore(builder, face, zs[0]);
+ LLVMBuildStore(builder, face, zs[1]);
+ LLVMBuildStore(builder, face, zs[2]);
+ LLVMBuildStore(builder, face, zs[3]);
}
+
+ lp_build_endif(&edge_if);
+
+ x00 = LLVMBuildLoad(builder, xs[0], "");
+ x01 = LLVMBuildLoad(builder, xs[1], "");
+ x10 = LLVMBuildLoad(builder, xs[2], "");
+ x11 = LLVMBuildLoad(builder, xs[3], "");
+ y00 = LLVMBuildLoad(builder, ys[0], "");
+ y01 = LLVMBuildLoad(builder, ys[1], "");
+ y10 = LLVMBuildLoad(builder, ys[2], "");
+ y11 = LLVMBuildLoad(builder, ys[3], "");
+ z00 = LLVMBuildLoad(builder, zs[0], "");
+ z01 = LLVMBuildLoad(builder, zs[1], "");
+ z10 = LLVMBuildLoad(builder, zs[2], "");
+ z11 = LLVMBuildLoad(builder, zs[3], "");
}
- else {
- y0 = y1 = t_fpart = NULL;
- z0 = z1 = r_fpart = NULL;
+
+ if (linear_mask) {
+ /*
+ * Whack filter weights into place. Whatever texel had more weight is
+ * the one which should have been selected by nearest filtering hence
+ * just use 100% weight for it.
+ */
+ struct lp_build_context *c_bld = &bld->coord_bld;
+ LLVMValueRef w1_mask, w1_weight;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, c_bld->type, 0.5f);
+
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, s_fpart, half);
+ /* this select is really just a "and" */
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ s_fpart = lp_build_select(c_bld, linear_mask, s_fpart, w1_weight);
+ if (dims >= 2) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, t_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ t_fpart = lp_build_select(c_bld, linear_mask, t_fpart, w1_weight);
+ if (dims == 3) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, r_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ r_fpart = lp_build_select(c_bld, linear_mask, r_fpart, w1_weight);
+ }
+ }
}
/*
* Get texture colors.
*/
/* get x0/x1 texels */
- lp_build_sample_texel_soa(bld, unit,
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x0, y0, z0,
+ x00, y00, z00,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[0][0]);
- lp_build_sample_texel_soa(bld, unit,
+ data_ptr, mipoffsets, neighbors[0][0]);
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x1, y0, z0,
+ x01, y01, z01,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[0][1]);
+ data_ptr, mipoffsets, neighbors[0][1]);
if (dims == 1) {
- /* Interpolate two samples from 1D image to produce one color */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = lp_build_lerp(&bld->texel_bld, s_fpart,
- neighbors[0][0][chan],
- neighbors[0][1][chan]);
+ assert(!is_gather);
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ /* Interpolate two samples from 1D image to produce one color */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_lerp(texel_bld, s_fpart,
+ neighbors[0][0][chan],
+ neighbors[0][1][chan],
+ 0);
+ }
+ }
+ else {
+ LLVMValueRef cmpval0, cmpval1;
+ cmpval0 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval1 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ /* simplified lerp, AND mask with weight and add */
+ colors_out[0] = lp_build_masklerp(texel_bld, s_fpart,
+ cmpval0, cmpval1);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
}
}
else {
/* 2D/3D texture */
- LLVMValueRef colors0[4];
+ struct lp_build_if_state corner_if;
+ LLVMValueRef colors0[4], colorss[4];
/* get x0/x1 texels at y1 */
- lp_build_sample_texel_soa(bld, unit,
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x0, y1, z0,
+ x10, y10, z10,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[1][0]);
- lp_build_sample_texel_soa(bld, unit,
+ data_ptr, mipoffsets, neighbors[1][0]);
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x1, y1, z0,
+ x11, y11, z11,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors[1][1]);
+ data_ptr, mipoffsets, neighbors[1][1]);
- /* Bilinear interpolate the four samples from the 2D image / 3D slice */
- for (chan = 0; chan < 4; chan++) {
- colors0[chan] = lp_build_lerp_2d(&bld->texel_bld,
- s_fpart, t_fpart,
- neighbors[0][0][chan],
- neighbors[0][1][chan],
- neighbors[1][0][chan],
- neighbors[1][1][chan]);
+ /*
+ * To avoid having to duplicate linear_mask / fetch code use
+ * another branch (with corner condition though edge would work
+ * as well) here.
+ */
+ if (accurate_cube_corners) {
+ LLVMValueRef w00, w01, w10, w11, wx0, wy0;
+ LLVMValueRef c_weight, c00, c01, c10, c11;
+ LLVMValueRef have_corner, one_third, tmp;
+
+ colorss[0] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[1] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[2] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+ colorss[3] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs");
+
+ have_corner = LLVMBuildLoad(builder, have_corners, "");
+
+ lp_build_if(&corner_if, bld->gallivm, have_corner);
+
+ /*
+ * we can't use standard 2d lerp as we need per-element weight
+ * in case of corners, so just calculate bilinear result as
+ * w00*s00 + w01*s01 + w10*s10 + w11*s11.
+ * (This is actually less work than using 2d lerp, 7 vs. 9 instructions,
+ * however calculating the weights needs another 6, so actually probably
+ * not slower than 2d lerp only for 4 channels as weights only need
+ * to be calculated once - of course fixing the weights has additional cost.)
+ */
+ wx0 = lp_build_sub(coord_bld, coord_bld->one, s_fpart);
+ wy0 = lp_build_sub(coord_bld, coord_bld->one, t_fpart);
+ w00 = lp_build_mul(coord_bld, wx0, wy0);
+ w01 = lp_build_mul(coord_bld, s_fpart, wy0);
+ w10 = lp_build_mul(coord_bld, wx0, t_fpart);
+ w11 = lp_build_mul(coord_bld, s_fpart, t_fpart);
+
+ /* find corner weight */
+ c00 = lp_build_and(ivec_bld, fall_off[0], fall_off[2]);
+ c_weight = lp_build_select(coord_bld, c00, w00, coord_bld->zero);
+ c01 = lp_build_and(ivec_bld, fall_off[1], fall_off[2]);
+ c_weight = lp_build_select(coord_bld, c01, w01, c_weight);
+ c10 = lp_build_and(ivec_bld, fall_off[0], fall_off[3]);
+ c_weight = lp_build_select(coord_bld, c10, w10, c_weight);
+ c11 = lp_build_and(ivec_bld, fall_off[1], fall_off[3]);
+ c_weight = lp_build_select(coord_bld, c11, w11, c_weight);
+
+ /*
+ * add 1/3 of the corner weight to each of the 3 other samples
+ * and null out corner weight
+ */
+ one_third = lp_build_const_vec(bld->gallivm, coord_bld->type, 1.0f/3.0f);
+ c_weight = lp_build_mul(coord_bld, c_weight, one_third);
+ w00 = lp_build_add(coord_bld, w00, c_weight);
+ c00 = LLVMBuildBitCast(builder, c00, coord_bld->vec_type, "");
+ w00 = lp_build_andnot(coord_bld, w00, c00);
+ w01 = lp_build_add(coord_bld, w01, c_weight);
+ c01 = LLVMBuildBitCast(builder, c01, coord_bld->vec_type, "");
+ w01 = lp_build_andnot(coord_bld, w01, c01);
+ w10 = lp_build_add(coord_bld, w10, c_weight);
+ c10 = LLVMBuildBitCast(builder, c10, coord_bld->vec_type, "");
+ w10 = lp_build_andnot(coord_bld, w10, c10);
+ w11 = lp_build_add(coord_bld, w11, c_weight);
+ c11 = LLVMBuildBitCast(builder, c11, coord_bld->vec_type, "");
+ w11 = lp_build_andnot(coord_bld, w11, c11);
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_mul(coord_bld, w00, neighbors[0][0][chan]);
+ tmp = lp_build_mul(coord_bld, w01, neighbors[0][1][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ tmp = lp_build_mul(coord_bld, w10, neighbors[1][0][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ tmp = lp_build_mul(coord_bld, w11, neighbors[1][1][chan]);
+ colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]);
+ }
+ }
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+ /* inputs to interpolation are just masks so just add masked weights together */
+ cmpval00 = LLVMBuildBitCast(builder, cmpval00, coord_bld->vec_type, "");
+ cmpval01 = LLVMBuildBitCast(builder, cmpval01, coord_bld->vec_type, "");
+ cmpval10 = LLVMBuildBitCast(builder, cmpval10, coord_bld->vec_type, "");
+ cmpval11 = LLVMBuildBitCast(builder, cmpval11, coord_bld->vec_type, "");
+ colors0[0] = lp_build_and(coord_bld, w00, cmpval00);
+ tmp = lp_build_and(coord_bld, w01, cmpval01);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ tmp = lp_build_and(coord_bld, w10, cmpval10);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ tmp = lp_build_and(coord_bld, w11, cmpval11);
+ colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]);
+ colors0[1] = colors0[2] = colors0[3] = colors0[0];
+ }
+
+ LLVMBuildStore(builder, colors0[0], colorss[0]);
+ LLVMBuildStore(builder, colors0[1], colorss[1]);
+ LLVMBuildStore(builder, colors0[2], colorss[2]);
+ LLVMBuildStore(builder, colors0[3], colorss[3]);
+
+ lp_build_else(&corner_if);
+ }
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ if (is_gather) {
+ /*
+ * Just assign the red channel (no component selection yet).
+ * This is a bit hackish, we usually do the swizzle at the
+ * end of sampling (much less values to swizzle), but this
+ * obviously cannot work when using gather.
+ */
+ unsigned chan_swiz = bld->static_texture_state->swizzle_r;
+ colors0[0] = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[1][0],
+ chan_swiz);
+ colors0[1] = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[1][1],
+ chan_swiz);
+ colors0[2] = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[0][1],
+ chan_swiz);
+ colors0[3] = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[0][0],
+ chan_swiz);
+ }
+ else {
+ /* Bilinear interpolate the four samples from the 2D image / 3D slice */
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_lerp_2d(texel_bld,
+ s_fpart, t_fpart,
+ neighbors[0][0][chan],
+ neighbors[0][1][chan],
+ neighbors[1][0][chan],
+ neighbors[1][1][chan],
+ 0);
+ }
+ }
+ }
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+
+ if (is_gather) {
+ /* more hacks for swizzling, should be X, ONE or ZERO... */
+ unsigned chan_swiz = bld->static_texture_state->swizzle_r;
+ if (chan_swiz <= PIPE_SWIZZLE_ALPHA) {
+ colors0[0] = lp_build_select(texel_bld, cmpval10,
+ texel_bld->one, texel_bld->zero);
+ colors0[1] = lp_build_select(texel_bld, cmpval11,
+ texel_bld->one, texel_bld->zero);
+ colors0[2] = lp_build_select(texel_bld, cmpval01,
+ texel_bld->one, texel_bld->zero);
+ colors0[3] = lp_build_select(texel_bld, cmpval00,
+ texel_bld->one, texel_bld->zero);
+ }
+ else if (chan_swiz == PIPE_SWIZZLE_ZERO) {
+ colors0[0] = colors0[1] = colors0[2] = colors0[3] =
+ texel_bld->zero;
+ }
+ else {
+ colors0[0] = colors0[1] = colors0[2] = colors0[3] =
+ texel_bld->one;
+ }
+ }
+ else {
+ colors0[0] = lp_build_masklerp2d(texel_bld, s_fpart, t_fpart,
+ cmpval00, cmpval01, cmpval10, cmpval11);
+ colors0[1] = colors0[2] = colors0[3] = colors0[0];
+ }
+ }
+
+ if (accurate_cube_corners) {
+ LLVMBuildStore(builder, colors0[0], colorss[0]);
+ LLVMBuildStore(builder, colors0[1], colorss[1]);
+ LLVMBuildStore(builder, colors0[2], colorss[2]);
+ LLVMBuildStore(builder, colors0[3], colorss[3]);
+
+ lp_build_endif(&corner_if);
+
+ colors0[0] = LLVMBuildLoad(builder, colorss[0], "");
+ colors0[1] = LLVMBuildLoad(builder, colorss[1], "");
+ colors0[2] = LLVMBuildLoad(builder, colorss[2], "");
+ colors0[3] = LLVMBuildLoad(builder, colorss[3], "");
}
if (dims == 3) {
LLVMValueRef neighbors1[2][2][4];
LLVMValueRef colors1[4];
+ assert(!is_gather);
+
/* get x0/x1/y0/y1 texels at z1 */
- lp_build_sample_texel_soa(bld, unit,
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x0, y0, z1,
+ x00, y00, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[0][0]);
- lp_build_sample_texel_soa(bld, unit,
+ data_ptr, mipoffsets, neighbors1[0][0]);
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x1, y0, z1,
+ x01, y01, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[0][1]);
- lp_build_sample_texel_soa(bld, unit,
+ data_ptr, mipoffsets, neighbors1[0][1]);
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x0, y1, z1,
+ x10, y10, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[1][0]);
- lp_build_sample_texel_soa(bld, unit,
+ data_ptr, mipoffsets, neighbors1[1][0]);
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
- x1, y1, z1,
+ x11, y11, z1,
row_stride_vec, img_stride_vec,
- data_ptr, neighbors1[1][1]);
-
- /* Bilinear interpolate the four samples from the second Z slice */
- for (chan = 0; chan < 4; chan++) {
- colors1[chan] = lp_build_lerp_2d(&bld->texel_bld,
- s_fpart, t_fpart,
- neighbors1[0][0][chan],
- neighbors1[0][1][chan],
- neighbors1[1][0][chan],
- neighbors1[1][1][chan]);
+ data_ptr, mipoffsets, neighbors1[1][1]);
+
+ if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) {
+ /* Bilinear interpolate the four samples from the second Z slice */
+ for (chan = 0; chan < 4; chan++) {
+ colors1[chan] = lp_build_lerp_2d(texel_bld,
+ s_fpart, t_fpart,
+ neighbors1[0][0][chan],
+ neighbors1[0][1][chan],
+ neighbors1[1][0][chan],
+ neighbors1[1][1][chan],
+ 0);
+ }
+ /* Linearly interpolate the two samples from the two 3D slices */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_lerp(texel_bld,
+ r_fpart,
+ colors0[chan], colors1[chan],
+ 0);
+ }
}
-
- /* Linearly interpolate the two samples from the two 3D slices */
- for (chan = 0; chan < 4; chan++) {
- colors_out[chan] = lp_build_lerp(&bld->texel_bld,
- r_fpart,
- colors0[chan], colors1[chan]);
+ else {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]);
+ colors1[0] = lp_build_masklerp2d(texel_bld, s_fpart, t_fpart,
+ cmpval00, cmpval01, cmpval10, cmpval11);
+ /* Linearly interpolate the two samples from the two 3D slices */
+ colors_out[0] = lp_build_lerp(texel_bld,
+ r_fpart,
+ colors0[0], colors1[0],
+ 0);
+ colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0];
}
}
else {
/**
* Sample the texture/mipmap using given image filter and mip filter.
- * data0_ptr and data1_ptr point to the two mipmap levels to sample
- * from. width0/1_vec, height0/1_vec, depth0/1_vec indicate their sizes.
+ * ilevel0 and ilevel1 indicate the two mipmap levels to sample
+ * from (vectors or scalars).
* If we're using nearest miplevel sampling the '1' values will be null/unused.
*/
static void
lp_build_sample_mipmap(struct lp_build_sample_context *bld,
- unsigned unit,
unsigned img_filter,
unsigned mip_filter,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ boolean is_gather,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
LLVMValueRef ilevel0,
LLVMValueRef ilevel1,
LLVMValueRef lod_fpart,
LLVMValueRef img_stride1_vec = NULL;
LLVMValueRef data_ptr0 = NULL;
LLVMValueRef data_ptr1 = NULL;
+ LLVMValueRef mipoff0 = NULL;
+ LLVMValueRef mipoff1 = NULL;
LLVMValueRef colors0[4], colors1[4];
unsigned chan;
lp_build_mipmap_level_sizes(bld, ilevel0,
&size0,
&row_stride0_vec, &img_stride0_vec);
- data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
+ if (bld->num_mips == 1) {
+ data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
+ }
+ else {
+ /* This path should work for num_lods 1 too but slightly less efficient */
+ data_ptr0 = bld->base_ptr;
+ mipoff0 = lp_build_get_mip_offsets(bld, ilevel0);
+ }
if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld, unit,
- size0,
+ lp_build_sample_image_nearest(bld, size0,
row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
+ data_ptr0, mipoff0, coords, offsets,
colors0);
}
else {
assert(img_filter == PIPE_TEX_FILTER_LINEAR);
- lp_build_sample_image_linear(bld, unit,
- size0,
+ lp_build_sample_image_linear(bld, is_gather, size0, NULL,
row_stride0_vec, img_stride0_vec,
- data_ptr0, s, t, r,
+ data_ptr0, mipoff0, coords, offsets,
colors0);
}
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
struct lp_build_if_state if_ctx;
LLVMValueRef need_lerp;
- unsigned num_quads = bld->coord_bld.type.length / 4;
/* need_lerp = lod_fpart > 0 */
- if (num_quads == 1) {
+ if (bld->num_lods == 1) {
need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT,
- lod_fpart, bld->perquadf_bld.zero,
+ lod_fpart, bld->lodf_bld.zero,
"need_lerp");
}
else {
/*
- * We'll do mip filtering if any of the quads need it.
+ * We'll do mip filtering if any of the quads (or individual
+ * pixel in case of per-pixel lod) need it.
* It might be better to split the vectors here and only fetch/filter
- * quads which need it.
+ * quads which need it (if there's one lod per quad).
*/
+ need_lerp = lp_build_compare(bld->gallivm, bld->lodf_bld.type,
+ PIPE_FUNC_GREATER,
+ lod_fpart, bld->lodf_bld.zero);
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, need_lerp);
+ }
+
+ lp_build_if(&if_ctx, bld->gallivm, need_lerp);
+ {
/*
* We unfortunately need to clamp lod_fpart here since we can get
* negative values which would screw up filtering if not all
* lod_fpart values have same sign.
*/
- lod_fpart = lp_build_max(&bld->perquadf_bld, lod_fpart,
- bld->perquadf_bld.zero);
- need_lerp = lp_build_compare(bld->gallivm, bld->perquadf_bld.type,
- PIPE_FUNC_GREATER,
- lod_fpart, bld->perquadf_bld.zero);
- need_lerp = lp_build_any_true_range(&bld->perquadi_bld, num_quads, need_lerp);
- }
-
- lp_build_if(&if_ctx, bld->gallivm, need_lerp);
- {
+ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart,
+ bld->lodf_bld.zero);
/* sample the second mipmap level */
lp_build_mipmap_level_sizes(bld, ilevel1,
&size1,
&row_stride1_vec, &img_stride1_vec);
- data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
+ 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, unit,
- size1,
+ lp_build_sample_image_nearest(bld, size1,
row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
+ data_ptr1, mipoff1, coords, offsets,
colors1);
}
else {
- lp_build_sample_image_linear(bld, unit,
- size1,
+ lp_build_sample_image_linear(bld, FALSE, size1, NULL,
row_stride1_vec, img_stride1_vec,
- data_ptr1, s, t, r,
+ data_ptr1, mipoff1, coords, offsets,
colors1);
}
/* interpolate samples from the two mipmap levels */
- lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
- bld->perquadf_bld.type,
- bld->texel_bld.type,
- lod_fpart);
+ if (bld->num_lods != bld->coord_type.length)
+ lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodf_bld.type,
+ bld->texel_bld.type,
+ lod_fpart);
for (chan = 0; chan < 4; chan++) {
colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
- colors0[chan], colors1[chan]);
+ colors0[chan], colors1[chan],
+ 0);
LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
}
}
}
}
+
/**
- * Calculate cube face, lod, mip levels.
+ * Sample the texture/mipmap using given mip filter, and using
+ * both nearest and linear filtering at the same time depending
+ * on linear_mask.
+ * lod can be per quad but linear_mask is always per pixel.
+ * ilevel0 and ilevel1 indicate the two mipmap levels to sample
+ * from (vectors or scalars).
+ * If we're using nearest miplevel sampling the '1' values will be null/unused.
*/
static void
-lp_build_sample_common(struct lp_build_sample_context *bld,
- unsigned unit,
- LLVMValueRef *s,
- LLVMValueRef *t,
- LLVMValueRef *r,
- const struct lp_derivatives *derivs,
- LLVMValueRef lod_bias, /* optional */
- LLVMValueRef explicit_lod, /* optional */
- LLVMValueRef *lod_ipart,
- LLVMValueRef *lod_fpart,
- LLVMValueRef *ilevel0,
- LLVMValueRef *ilevel1)
+lp_build_sample_mipmap_both(struct lp_build_sample_context *bld,
+ LLVMValueRef linear_mask,
+ unsigned mip_filter,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef lod_positive,
+ LLVMValueRef *colors_out)
{
- 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;
- LLVMValueRef first_level;
- struct lp_derivatives face_derivs;
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef size0 = NULL;
+ LLVMValueRef size1 = NULL;
+ LLVMValueRef row_stride0_vec = NULL;
+ LLVMValueRef row_stride1_vec = NULL;
+ LLVMValueRef img_stride0_vec = NULL;
+ LLVMValueRef img_stride1_vec = NULL;
+ LLVMValueRef data_ptr0 = NULL;
+ LLVMValueRef data_ptr1 = NULL;
+ LLVMValueRef mipoff0 = NULL;
+ LLVMValueRef mipoff1 = NULL;
+ LLVMValueRef colors0[4], colors1[4];
+ unsigned chan;
- /*
- printf("%s mip %d min %d mag %d\n", __FUNCTION__,
- mip_filter, min_filter, mag_filter);
- */
+ /* 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);
+ }
- /*
- * Choose cube face, recompute texcoords and derivatives for the chosen face.
- */
- 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 = face; /* vec */
+ lp_build_sample_image_linear(bld, FALSE, size0, linear_mask,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, mipoff0, coords, offsets,
+ colors0);
- /* recompute ddx, ddy using the new (s,t) face texcoords */
- face_derivs.ddx_ddy[0] = lp_build_packed_ddx_ddy_twocoord(&bld->coord_bld, *s, *t);
- face_derivs.ddx_ddy[1] = NULL;
- derivs = &face_derivs;
+ /* Store the first level's colors in the output variables */
+ for (chan = 0; chan < 4; chan++) {
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
}
- /*
- * Compute the level of detail (float).
- */
+ if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
+ struct lp_build_if_state if_ctx;
+ LLVMValueRef need_lerp;
+
+ /*
+ * We'll do mip filtering if any of the quads (or individual
+ * pixel in case of per-pixel lod) need it.
+ * Note using lod_positive here not lod_fpart since it may be the same
+ * condition as that used in the outer "if" in the caller hence llvm
+ * should be able to merge the branches in this case.
+ */
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, lod_positive);
+
+ lp_build_if(&if_ctx, bld->gallivm, need_lerp);
+ {
+ /*
+ * We unfortunately need to clamp lod_fpart here since we can get
+ * negative values which would screw up filtering if not all
+ * lod_fpart values have same sign.
+ */
+ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart,
+ bld->lodf_bld.zero);
+ /* sample the second mipmap level */
+ lp_build_mipmap_level_sizes(bld, ilevel1,
+ &size1,
+ &row_stride1_vec, &img_stride1_vec);
+ if (bld->num_mips == 1) {
+ data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
+ }
+ else {
+ data_ptr1 = bld->base_ptr;
+ mipoff1 = lp_build_get_mip_offsets(bld, ilevel1);
+ }
+
+ lp_build_sample_image_linear(bld, FALSE, size1, linear_mask,
+ row_stride1_vec, img_stride1_vec,
+ data_ptr1, mipoff1, coords, offsets,
+ colors1);
+
+ /* interpolate samples from the two mipmap levels */
+
+ if (bld->num_lods != bld->coord_type.length)
+ lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodf_bld.type,
+ bld->texel_bld.type,
+ lod_fpart);
+
+ for (chan = 0; chan < 4; chan++) {
+ colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
+ colors0[chan], colors1[chan],
+ 0);
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
+ }
+ }
+ lp_build_endif(&if_ctx);
+ }
+}
+
+
+/**
+ * Build (per-coord) layer value.
+ * Either clamp layer to valid values or fill in optional out_of_bounds
+ * value and just return value unclamped.
+ */
+static LLVMValueRef
+lp_build_layer_coord(struct lp_build_sample_context *bld,
+ unsigned texture_unit,
+ boolean is_cube_array,
+ LLVMValueRef layer,
+ LLVMValueRef *out_of_bounds)
+{
+ LLVMValueRef num_layers;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+
+ num_layers = bld->dynamic_state->depth(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+
+ if (out_of_bounds) {
+ LLVMValueRef out1, out;
+ assert(!is_cube_array);
+ num_layers = lp_build_broadcast_scalar(int_coord_bld, num_layers);
+ out = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, layer, int_coord_bld->zero);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, layer, num_layers);
+ *out_of_bounds = lp_build_or(int_coord_bld, out, out1);
+ return layer;
+ }
+ else {
+ LLVMValueRef maxlayer;
+ LLVMValueRef s = is_cube_array ? lp_build_const_int32(bld->gallivm, 6) :
+ bld->int_bld.one;
+ maxlayer = lp_build_sub(&bld->int_bld, num_layers, s);
+ maxlayer = lp_build_broadcast_scalar(int_coord_bld, maxlayer);
+ return lp_build_clamp(int_coord_bld, layer, int_coord_bld->zero, maxlayer);
+ }
+}
+
+
+/**
+ * Calculate cube face, lod, mip levels.
+ */
+static void
+lp_build_sample_common(struct lp_build_sample_context *bld,
+ unsigned texture_index,
+ unsigned sampler_index,
+ LLVMValueRef *coords,
+ const struct lp_derivatives *derivs, /* optional */
+ LLVMValueRef lod_bias, /* optional */
+ LLVMValueRef explicit_lod, /* optional */
+ LLVMValueRef *lod_pos_or_zero,
+ LLVMValueRef *lod_fpart,
+ LLVMValueRef *ilevel0,
+ LLVMValueRef *ilevel1)
+{
+ const unsigned mip_filter = bld->static_sampler_state->min_mip_filter;
+ const unsigned min_filter = bld->static_sampler_state->min_img_filter;
+ const unsigned mag_filter = bld->static_sampler_state->mag_img_filter;
+ const unsigned target = bld->static_texture_state->target;
+ LLVMValueRef first_level, cube_rho = NULL;
+ LLVMValueRef lod_ipart = NULL;
+ struct lp_derivatives cube_derivs;
+
+ /*
+ printf("%s mip %d min %d mag %d\n", __FUNCTION__,
+ mip_filter, min_filter, mag_filter);
+ */
+
+ /*
+ * Choose cube face, recompute texcoords for the chosen face and
+ * compute rho here too (as it requires transform of derivatives).
+ */
+ if (target == PIPE_TEXTURE_CUBE || target == PIPE_TEXTURE_CUBE_ARRAY) {
+ boolean need_derivs;
+ need_derivs = ((min_filter != mag_filter ||
+ mip_filter != PIPE_TEX_MIPFILTER_NONE) &&
+ !bld->static_sampler_state->min_max_lod_equal &&
+ !explicit_lod);
+ lp_build_cube_lookup(bld, coords, derivs, &cube_rho, &cube_derivs, need_derivs);
+ derivs = &cube_derivs;
+ if (target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /* calculate cube layer coord now */
+ LLVMValueRef layer = lp_build_iround(&bld->coord_bld, coords[3]);
+ LLVMValueRef six = lp_build_const_int_vec(bld->gallivm, bld->int_coord_type, 6);
+ layer = lp_build_mul(&bld->int_coord_bld, layer, six);
+ coords[3] = lp_build_layer_coord(bld, texture_index, TRUE, layer, NULL);
+ /* because of seamless filtering can't add it to face (coords[2]) here. */
+ }
+ }
+ else if (target == PIPE_TEXTURE_1D_ARRAY ||
+ target == PIPE_TEXTURE_2D_ARRAY) {
+ coords[2] = lp_build_iround(&bld->coord_bld, coords[2]);
+ coords[2] = lp_build_layer_coord(bld, texture_index, FALSE, coords[2], NULL);
+ }
+
+ if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) {
+ /*
+ * Clamp p coords to [0,1] for fixed function depth texture format here.
+ * Technically this is not entirely correct for unorm depth as the ref value
+ * should be converted to the depth format (quantization!) and comparison
+ * then done in texture format. This would actually help performance (since
+ * only need to do it once and could save the per-sample conversion of texels
+ * to floats instead), but it would need more messy code (would need to push
+ * at least some bits down to actual fetch so conversion could be skipped,
+ * and would have ugly interaction with border color, would need to convert
+ * border color to that format too or do some other tricks to make it work).
+ */
+ const struct util_format_description *format_desc = bld->format_desc;
+ unsigned chan_type;
+ /* not entirely sure we couldn't end up with non-valid swizzle here */
+ chan_type = format_desc->swizzle[0] <= UTIL_FORMAT_SWIZZLE_W ?
+ format_desc->channel[format_desc->swizzle[0]].type :
+ UTIL_FORMAT_TYPE_FLOAT;
+ if (chan_type != UTIL_FORMAT_TYPE_FLOAT) {
+ coords[4] = lp_build_clamp(&bld->coord_bld, coords[4],
+ bld->coord_bld.zero, bld->coord_bld.one);
+ }
+ }
+
+ /*
+ * Compute the level of detail (float).
+ */
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, derivs,
- lod_bias, explicit_lod,
+ lp_build_lod_selector(bld, texture_index, sampler_index,
+ coords[0], coords[1], coords[2], cube_rho,
+ derivs, lod_bias, explicit_lod,
mip_filter,
- lod_ipart, lod_fpart);
+ &lod_ipart, lod_fpart, lod_pos_or_zero);
} else {
- *lod_ipart = bld->perquadi_bld.zero;
+ lod_ipart = bld->lodi_bld.zero;
+ *lod_pos_or_zero = bld->lodi_bld.zero;
+ }
+
+ if (bld->num_lods != bld->num_mips) {
+ /* only makes sense if there's just a single mip level */
+ assert(bld->num_mips == 1);
+ lod_ipart = lp_build_extract_range(bld->gallivm, lod_ipart, 0, 1);
}
/*
/* 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.
- * XXX should probably disable that on other llvm versions.
- */
- 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);
- first_level = lp_build_broadcast_scalar(&bld->perquadi_bld, first_level);
- *ilevel0 = first_level;
- }
+ first_level = bld->dynamic_state->first_level(bld->dynamic_state,
+ bld->gallivm, bld->context_ptr,
+ texture_index);
+ first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level);
+ *ilevel0 = first_level;
break;
case PIPE_TEX_MIPFILTER_NEAREST:
- assert(*lod_ipart);
- lp_build_nearest_mip_level(bld, unit, *lod_ipart, ilevel0);
+ assert(lod_ipart);
+ lp_build_nearest_mip_level(bld, texture_index, lod_ipart, ilevel0, NULL);
break;
case PIPE_TEX_MIPFILTER_LINEAR:
- assert(*lod_ipart);
+ assert(lod_ipart);
assert(*lod_fpart);
- lp_build_linear_mip_levels(bld, unit,
- *lod_ipart, lod_fpart,
+ lp_build_linear_mip_levels(bld, texture_index,
+ lod_ipart, lod_fpart,
ilevel0, ilevel1);
break;
}
}
+static void
+lp_build_clamp_border_color(struct lp_build_sample_context *bld,
+ unsigned sampler_unit)
+{
+ struct gallivm_state *gallivm = bld->gallivm;
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMValueRef border_color_ptr =
+ bld->dynamic_state->border_color(bld->dynamic_state, gallivm,
+ bld->context_ptr, sampler_unit);
+ LLVMValueRef border_color;
+ const struct util_format_description *format_desc = bld->format_desc;
+ struct lp_type vec4_type = bld->texel_type;
+ struct lp_build_context vec4_bld;
+ LLVMValueRef min_clamp = NULL;
+ LLVMValueRef max_clamp = NULL;
+
+ /*
+ * For normalized format need to clamp border color (technically
+ * probably should also quantize the data). Really sucks doing this
+ * here but can't avoid at least for now since this is part of
+ * sampler state and texture format is part of sampler_view state.
+ * GL expects also expects clamping for uint/sint formats too so
+ * do that as well (d3d10 can't end up here with uint/sint since it
+ * only supports them with ld).
+ */
+ vec4_type.length = 4;
+ lp_build_context_init(&vec4_bld, gallivm, vec4_type);
+
+ /*
+ * Vectorized clamping of border color. Loading is a bit of a hack since
+ * we just cast the pointer to float array to pointer to vec4
+ * (int or float).
+ */
+ border_color_ptr = lp_build_array_get_ptr(gallivm, border_color_ptr,
+ lp_build_const_int32(gallivm, 0));
+ border_color_ptr = LLVMBuildBitCast(builder, border_color_ptr,
+ LLVMPointerType(vec4_bld.vec_type, 0), "");
+ border_color = LLVMBuildLoad(builder, border_color_ptr, "");
+ /* we don't have aligned type in the dynamic state unfortunately */
+ LLVMSetAlignment(border_color, 4);
+
+ /*
+ * Instead of having some incredibly complex logic which will try to figure out
+ * clamping necessary for each channel, simply use the first channel, and treat
+ * mixed signed/unsigned normalized formats specially.
+ * (Mixed non-normalized, which wouldn't work at all here, do not exist for a
+ * good reason.)
+ */
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
+ int chan;
+ /* d/s needs special handling because both present means just sampling depth */
+ if (util_format_is_depth_and_stencil(format_desc->format)) {
+ chan = format_desc->swizzle[0];
+ }
+ else {
+ chan = util_format_get_first_non_void_channel(format_desc->format);
+ }
+ if (chan >= 0 && chan <= UTIL_FORMAT_SWIZZLE_W) {
+ unsigned chan_type = format_desc->channel[chan].type;
+ unsigned chan_norm = format_desc->channel[chan].normalized;
+ unsigned chan_pure = format_desc->channel[chan].pure_integer;
+ if (chan_type == UTIL_FORMAT_TYPE_SIGNED) {
+ if (chan_norm) {
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ }
+ else if (chan_pure) {
+ /*
+ * Border color was stored as int, hence need min/max clamp
+ * only if chan has less than 32 bits..
+ */
+ unsigned chan_size = format_desc->channel[chan].size;
+ if (chan_size < 32) {
+ min_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ 0 - (1 << (chan_size - 1)));
+ max_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ (1 << (chan_size - 1)) - 1);
+ }
+ }
+ /* TODO: no idea about non-pure, non-normalized! */
+ }
+ else if (chan_type == UTIL_FORMAT_TYPE_UNSIGNED) {
+ if (chan_norm) {
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ }
+ /*
+ * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24
+ * we use Z32_FLOAT_S8X24 to imply sampling depth component
+ * and ignoring stencil, which will blow up here if we try to
+ * do a uint clamp in a float texel build...
+ * And even if we had that format, mesa st also thinks using z24s8
+ * means depth sampling ignoring stencil.
+ */
+ else if (chan_pure) {
+ /*
+ * Border color was stored as uint, hence never need min
+ * clamp, and only need max clamp if chan has less than 32 bits.
+ */
+ unsigned chan_size = format_desc->channel[chan].size;
+ if (chan_size < 32) {
+ max_clamp = lp_build_const_int_vec(gallivm, vec4_type,
+ (1 << chan_size) - 1);
+ }
+ /* TODO: no idea about non-pure, non-normalized! */
+ }
+ }
+ else if (chan_type == UTIL_FORMAT_TYPE_FIXED) {
+ /* TODO: I have no idea what clamp this would need if any! */
+ }
+ }
+ /* mixed plain formats (or different pure size) */
+ switch (format_desc->format) {
+ case PIPE_FORMAT_B10G10R10A2_UINT:
+ case PIPE_FORMAT_R10G10B10A2_UINT:
+ {
+ unsigned max10 = (1 << 10) - 1;
+ max_clamp = lp_build_const_aos(gallivm, vec4_type, max10, max10,
+ max10, (1 << 2) - 1, NULL);
+ }
+ break;
+ case PIPE_FORMAT_R10SG10SB10SA2U_NORM:
+ min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F,
+ -1.0F, 0.0F, NULL);
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
+ case PIPE_FORMAT_R5SG5SB6U_NORM:
+ min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F,
+ 0.0F, 0.0F, NULL);
+ max_clamp = vec4_bld.one;
+ break;
+ default:
+ break;
+ }
+ }
+ else {
+ /* cannot figure this out from format description */
+ if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+ /* s3tc formats are always unorm */
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ }
+ else if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC ||
+ format_desc->layout == UTIL_FORMAT_LAYOUT_ETC) {
+ switch (format_desc->format) {
+ case PIPE_FORMAT_RGTC1_UNORM:
+ case PIPE_FORMAT_RGTC2_UNORM:
+ case PIPE_FORMAT_LATC1_UNORM:
+ case PIPE_FORMAT_LATC2_UNORM:
+ case PIPE_FORMAT_ETC1_RGB8:
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_RGTC1_SNORM:
+ case PIPE_FORMAT_RGTC2_SNORM:
+ case PIPE_FORMAT_LATC1_SNORM:
+ case PIPE_FORMAT_LATC2_SNORM:
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ /*
+ * all others from subsampled/other group, though we don't care
+ * about yuv (and should not have any from zs here)
+ */
+ else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_YUV){
+ switch (format_desc->format) {
+ case PIPE_FORMAT_R8G8_B8G8_UNORM:
+ case PIPE_FORMAT_G8R8_G8B8_UNORM:
+ case PIPE_FORMAT_G8R8_B8R8_UNORM:
+ case PIPE_FORMAT_R8G8_R8B8_UNORM:
+ case PIPE_FORMAT_R1_UNORM: /* doesn't make sense but ah well */
+ min_clamp = vec4_bld.zero;
+ max_clamp = vec4_bld.one;
+ break;
+ case PIPE_FORMAT_R8G8Bx_SNORM:
+ min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F);
+ max_clamp = vec4_bld.one;
+ break;
+ /*
+ * Note smallfloat formats usually don't need clamping
+ * (they still have infinite range) however this is not
+ * true for r11g11b10 and r9g9b9e5, which can't represent
+ * negative numbers (and additionally r9g9b9e5 can't represent
+ * very large numbers). d3d10 seems happy without clamping in
+ * this case, but gl spec is pretty clear: "for floating
+ * point and integer formats, border values are clamped to
+ * the representable range of the format" so do that here.
+ */
+ case PIPE_FORMAT_R11G11B10_FLOAT:
+ min_clamp = vec4_bld.zero;
+ break;
+ case PIPE_FORMAT_R9G9B9E5_FLOAT:
+ min_clamp = vec4_bld.zero;
+ max_clamp = lp_build_const_vec(gallivm, vec4_type, MAX_RGB9E5);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ }
+
+ if (min_clamp) {
+ border_color = lp_build_max(&vec4_bld, border_color, min_clamp);
+ }
+ if (max_clamp) {
+ border_color = lp_build_min(&vec4_bld, border_color, max_clamp);
+ }
+
+ bld->border_color_clamped = border_color;
+}
+
+
/**
* General texture sampling codegen.
* This function handles texture sampling for all texture targets (1D,
*/
static void
lp_build_sample_general(struct lp_build_sample_context *bld,
- unsigned unit,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef lod_ipart,
+ unsigned sampler_unit,
+ boolean is_gather,
+ LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef lod_positive,
LLVMValueRef lod_fpart,
LLVMValueRef ilevel0,
LLVMValueRef ilevel1,
LLVMValueRef *colors_out)
{
- struct lp_build_context *int_bld = &bld->int_bld;
LLVMBuilderRef builder = bld->gallivm->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 struct lp_static_sampler_state *sampler_state = bld->static_sampler_state;
+ const unsigned mip_filter = sampler_state->min_mip_filter;
+ const unsigned min_filter = sampler_state->min_img_filter;
+ const unsigned mag_filter = sampler_state->mag_img_filter;
LLVMValueRef texels[4];
unsigned chan;
+ /* if we need border color, (potentially) clamp it now */
+ if (lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_s,
+ min_filter,
+ mag_filter) ||
+ (bld->dims > 1 &&
+ lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_t,
+ min_filter,
+ mag_filter)) ||
+ (bld->dims > 2 &&
+ lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_r,
+ min_filter,
+ mag_filter))) {
+ lp_build_clamp_border_color(bld, sampler_unit);
+ }
+
+
/*
* Get/interpolate texture colors.
*/
for (chan = 0; chan < 4; ++chan) {
texels[chan] = lp_build_alloca(bld->gallivm, bld->texel_bld.vec_type, "");
- lp_build_name(texels[chan], "sampler%u_texel_%c_var", unit, "xyzw"[chan]);
+ lp_build_name(texels[chan], "sampler%u_texel_%c_var", sampler_unit, "xyzw"[chan]);
}
if (min_filter == mag_filter) {
/* no need to distinguish between minification and magnification */
- lp_build_sample_mipmap(bld, unit,
- min_filter, mip_filter,
- s, t, r,
+ lp_build_sample_mipmap(bld, min_filter, mip_filter,
+ is_gather,
+ coords, offsets,
ilevel0, ilevel1, lod_fpart,
texels);
}
else {
- /* Emit conditional to choose min image filter or mag image filter
- * depending on the lod being > 0 or <= 0, respectively.
+ /*
+ * Could also get rid of the if-logic and always use mipmap_both, both
+ * for the single lod and multi-lod case if nothing really uses this.
*/
- struct lp_build_if_state if_ctx;
- LLVMValueRef minify;
+ if (bld->num_lods == 1) {
+ /* Emit conditional to choose min image filter or mag image filter
+ * depending on the lod being > 0 or <= 0, respectively.
+ */
+ struct lp_build_if_state if_ctx;
- /* 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, bld->gallivm, minify);
- {
- /* Use the minification filter */
- lp_build_sample_mipmap(bld, unit,
- min_filter, mip_filter,
- s, t, r,
- ilevel0, ilevel1, lod_fpart,
- texels);
- }
- lp_build_else(&if_ctx);
- {
- /* Use the magnification filter */
- lp_build_sample_mipmap(bld, unit,
- mag_filter, PIPE_TEX_MIPFILTER_NONE,
- s, t, r,
- ilevel0, NULL, NULL,
- texels);
+ lp_build_if(&if_ctx, bld->gallivm, lod_positive);
+ {
+ /* Use the minification filter */
+ lp_build_sample_mipmap(bld, min_filter, mip_filter, FALSE,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
+ }
+ lp_build_else(&if_ctx);
+ {
+ /* Use the magnification filter */
+ lp_build_sample_mipmap(bld, mag_filter, PIPE_TEX_MIPFILTER_NONE,
+ FALSE,
+ coords, offsets,
+ ilevel0, NULL, NULL,
+ texels);
+ }
+ lp_build_endif(&if_ctx);
+ }
+ else {
+ LLVMValueRef need_linear, linear_mask;
+ unsigned mip_filter_for_nearest;
+ struct lp_build_if_state if_ctx;
+
+ if (min_filter == PIPE_TEX_FILTER_LINEAR) {
+ linear_mask = lod_positive;
+ mip_filter_for_nearest = PIPE_TEX_MIPFILTER_NONE;
+ }
+ else {
+ linear_mask = lp_build_not(&bld->lodi_bld, lod_positive);
+ mip_filter_for_nearest = mip_filter;
+ }
+ need_linear = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods,
+ linear_mask);
+
+ if (bld->num_lods != bld->coord_type.length) {
+ linear_mask = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ bld->lodi_type,
+ bld->int_coord_type,
+ linear_mask);
+ }
+
+ lp_build_if(&if_ctx, bld->gallivm, need_linear);
+ {
+ /*
+ * Do sampling with both filters simultaneously. This means using
+ * a linear filter and doing some tricks (with weights) for the pixels
+ * which need nearest filter.
+ * Note that it's probably rare some pixels need nearest and some
+ * linear filter but the fixups required for the nearest pixels
+ * aren't all that complicated so just always run a combined path
+ * if at least some pixels require linear.
+ */
+ lp_build_sample_mipmap_both(bld, linear_mask, mip_filter,
+ coords, offsets,
+ ilevel0, ilevel1,
+ lod_fpart, lod_positive,
+ texels);
+ }
+ lp_build_else(&if_ctx);
+ {
+ /*
+ * All pixels require just nearest filtering, which is way
+ * cheaper than linear, hence do a separate path for that.
+ */
+ lp_build_sample_mipmap(bld, PIPE_TEX_FILTER_NEAREST, FALSE,
+ mip_filter_for_nearest,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
+ }
+ lp_build_endif(&if_ctx);
}
- lp_build_endif(&if_ctx);
}
for (chan = 0; chan < 4; ++chan) {
colors_out[chan] = LLVMBuildLoad(builder, texels[chan], "");
- lp_build_name(colors_out[chan], "sampler%u_texel_%c", unit, "xyzw"[chan]);
+ lp_build_name(colors_out[chan], "sampler%u_texel_%c", sampler_unit, "xyzw"[chan]);
}
}
/**
- * Do shadow test/comparison.
- * \param p the texcoord Z (aka R, aka P) component
- * \param texel the texel to compare against (use the X channel)
+ * Texel fetch function.
+ * In contrast to general sampling there is no filtering, no coord minification,
+ * lod (if any) is always explicit uint, coords are uints (in terms of texel units)
+ * directly to be applied to the selected mip level (after adding texel offsets).
+ * This function handles texel fetch for all targets where texel fetch is supported
+ * (no cube maps, but 1d, 2d, 3d are supported, arrays and buffers should be too).
*/
static void
-lp_build_sample_compare(struct lp_build_sample_context *bld,
- LLVMValueRef p,
- LLVMValueRef texel[4])
+lp_build_fetch_texel(struct lp_build_sample_context *bld,
+ unsigned texture_unit,
+ const LLVMValueRef *coords,
+ LLVMValueRef explicit_lod,
+ const LLVMValueRef *offsets,
+ LLVMValueRef *colors_out)
{
- struct lp_build_context *texel_bld = &bld->texel_bld;
- LLVMBuilderRef builder = bld->gallivm->builder;
- LLVMValueRef res;
- const unsigned chan = 0;
+ struct lp_build_context *perquadi_bld = &bld->lodi_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ unsigned dims = bld->dims, chan;
+ unsigned target = bld->static_texture_state->target;
+ boolean out_of_bound_ret_zero = TRUE;
+ LLVMValueRef size, ilevel;
+ LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL;
+ LLVMValueRef x = coords[0], y = coords[1], z = coords[2];
+ LLVMValueRef width, height, depth, i, j;
+ LLVMValueRef offset, out_of_bounds, out1;
+
+ out_of_bounds = int_coord_bld->zero;
+
+ if (explicit_lod && bld->static_texture_state->target != PIPE_BUFFER) {
+ if (bld->num_mips != int_coord_bld->type.length) {
+ ilevel = lp_build_pack_aos_scalars(bld->gallivm, int_coord_bld->type,
+ perquadi_bld->type, explicit_lod, 0);
+ }
+ else {
+ ilevel = explicit_lod;
+ }
+ lp_build_nearest_mip_level(bld, texture_unit, ilevel, &ilevel,
+ out_of_bound_ret_zero ? &out_of_bounds : NULL);
+ }
+ else {
+ assert(bld->num_mips == 1);
+ if (bld->static_texture_state->target != PIPE_BUFFER) {
+ ilevel = bld->dynamic_state->first_level(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ }
+ else {
+ ilevel = lp_build_const_int32(bld->gallivm, 0);
+ }
+ }
+ lp_build_mipmap_level_sizes(bld, ilevel,
+ &size,
+ &row_stride_vec, &img_stride_vec);
+ lp_build_extract_image_sizes(bld, &bld->int_size_bld, int_coord_bld->type,
+ size, &width, &height, &depth);
+
+ if (target == PIPE_TEXTURE_1D_ARRAY ||
+ target == PIPE_TEXTURE_2D_ARRAY) {
+ if (out_of_bound_ret_zero) {
+ z = lp_build_layer_coord(bld, texture_unit, FALSE, z, &out1);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ }
+ else {
+ z = lp_build_layer_coord(bld, texture_unit, FALSE, z, NULL);
+ }
+ }
- if (bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE)
- return;
+ /* This is a lot like border sampling */
+ if (offsets[0]) {
+ /*
+ * coords are really unsigned, offsets are signed, but I don't think
+ * exceeding 31 bits is possible
+ */
+ x = lp_build_add(int_coord_bld, x, offsets[0]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
- /* debug code */
- if (0) {
- LLVMValueRef indx = lp_build_const_int32(bld->gallivm, 0);
- LLVMValueRef coord = LLVMBuildExtractElement(builder, p, indx, "");
- LLVMValueRef tex = LLVMBuildExtractElement(builder, texel[chan], indx, "");
- lp_build_printf(bld->gallivm, "shadow compare coord %f to texture %f\n",
- coord, tex);
+ if (dims >= 2) {
+ if (offsets[1]) {
+ y = lp_build_add(int_coord_bld, y, offsets[1]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+
+ if (dims >= 3) {
+ if (offsets[2]) {
+ z = lp_build_add(int_coord_bld, z, offsets[2]);
+ }
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth);
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ }
}
- /* Clamp p coords to [0,1] */
- p = lp_build_clamp(&bld->coord_bld, p,
- bld->coord_bld.zero,
- bld->coord_bld.one);
+ lp_build_sample_offset(int_coord_bld,
+ bld->format_desc,
+ x, y, z, row_stride_vec, img_stride_vec,
+ &offset, &i, &j);
- /* result = (p FUNC texel) ? 1 : 0 */
- res = lp_build_cmp(texel_bld, bld->static_state->compare_func,
- p, texel[chan]);
- res = lp_build_select(texel_bld, res, texel_bld->one, texel_bld->zero);
-
- /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */
- texel[0] =
- texel[1] =
- texel[2] = res;
- texel[3] = texel_bld->one;
+ if (bld->static_texture_state->target != PIPE_BUFFER) {
+ offset = lp_build_add(int_coord_bld, offset,
+ lp_build_get_mip_offsets(bld, ilevel));
+ }
+
+ offset = lp_build_andnot(int_coord_bld, offset, out_of_bounds);
+
+ lp_build_fetch_rgba_soa(bld->gallivm,
+ bld->format_desc,
+ bld->texel_type,
+ bld->base_ptr, offset,
+ i, j,
+ bld->cache,
+ colors_out);
+
+ if (out_of_bound_ret_zero) {
+ /*
+ * Only needed for ARB_robust_buffer_access_behavior and d3d10.
+ * Could use min/max above instead of out-of-bounds comparisons
+ * if we don't care about the result returned for out-of-bounds.
+ */
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = lp_build_select(&bld->texel_bld, out_of_bounds,
+ bld->texel_bld.zero, colors_out[chan]);
+ }
+ }
}
void
lp_build_sample_nop(struct gallivm_state *gallivm,
struct lp_type type,
- unsigned num_coords,
const LLVMValueRef *coords,
LLVMValueRef texel_out[4])
{
/**
- * Build texture sampling code.
+ * Build the actual texture sampling code.
* 'texel' will return a vector of four LLVMValueRefs corresponding to
* R, G, B, A.
* \param type vector float type to use for coords, etc.
+ * \param sample_key
* \param derivs partial derivatives of (s,t,r,q) with respect to x and y
*/
-void
-lp_build_sample_soa(struct gallivm_state *gallivm,
- const struct lp_sampler_static_state *static_state,
- struct lp_sampler_dynamic_state *dynamic_state,
- struct lp_type type,
- unsigned unit,
- unsigned num_coords,
- const LLVMValueRef *coords,
- const struct lp_derivatives *derivs,
- LLVMValueRef lod_bias, /* optional */
- LLVMValueRef explicit_lod, /* optional */
- LLVMValueRef texel_out[4])
+static void
+lp_build_sample_soa_code(struct gallivm_state *gallivm,
+ const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct lp_type type,
+ unsigned sample_key,
+ unsigned texture_index,
+ unsigned sampler_index,
+ LLVMValueRef context_ptr,
+ LLVMValueRef thread_data_ptr,
+ const LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ const struct lp_derivatives *derivs, /* optional */
+ LLVMValueRef lod, /* optional */
+ LLVMValueRef texel_out[4])
{
- unsigned dims = texture_dims(static_state->target);
+ unsigned target = static_texture_state->target;
+ unsigned dims = texture_dims(target);
+ unsigned num_quads = type.length / 4;
+ unsigned mip_filter, min_img_filter, mag_img_filter, i;
struct lp_build_sample_context bld;
+ struct lp_static_sampler_state derived_sampler_state = *static_sampler_state;
LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context);
LLVMBuilderRef builder = gallivm->builder;
- LLVMValueRef tex_width, tex_height, tex_depth;
- LLVMValueRef s;
- LLVMValueRef t;
- LLVMValueRef r;
+ LLVMValueRef tex_width, newcoords[5];
+ enum lp_sampler_lod_property lod_property;
+ enum lp_sampler_lod_control lod_control;
+ enum lp_sampler_op_type op_type;
+ LLVMValueRef lod_bias = NULL;
+ LLVMValueRef explicit_lod = NULL;
+ boolean op_is_tex;
if (0) {
- enum pipe_format fmt = static_state->format;
+ enum pipe_format fmt = static_texture_state->format;
debug_printf("Sample from %s\n", util_format_name(fmt));
}
+ lod_property = (sample_key & LP_SAMPLER_LOD_PROPERTY_MASK) >>
+ LP_SAMPLER_LOD_PROPERTY_SHIFT;
+ lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >>
+ LP_SAMPLER_LOD_CONTROL_SHIFT;
+ op_type = (sample_key & LP_SAMPLER_OP_TYPE_MASK) >>
+ LP_SAMPLER_OP_TYPE_SHIFT;
+
+ op_is_tex = op_type == LP_SAMPLER_OP_TEXTURE;
+
+ if (lod_control == LP_SAMPLER_LOD_BIAS) {
+ lod_bias = lod;
+ assert(lod);
+ assert(derivs == NULL);
+ }
+ else if (lod_control == LP_SAMPLER_LOD_EXPLICIT) {
+ explicit_lod = lod;
+ assert(lod);
+ assert(derivs == NULL);
+ }
+ else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) {
+ assert(derivs);
+ assert(lod == NULL);
+ }
+ else {
+ assert(derivs == NULL);
+ assert(lod == NULL);
+ }
+
+ if (static_texture_state->format == PIPE_FORMAT_NONE) {
+ /*
+ * If there's nothing bound, format is NONE, and we must return
+ * all zero as mandated by d3d10 in this case.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_zero(gallivm, type);
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = zero;
+ }
+ return;
+ }
+
assert(type.floating);
/* Setup our build context */
memset(&bld, 0, sizeof bld);
bld.gallivm = gallivm;
- bld.static_state = static_state;
+ bld.context_ptr = context_ptr;
+ bld.static_sampler_state = &derived_sampler_state;
+ bld.static_texture_state = static_texture_state;
bld.dynamic_state = dynamic_state;
- bld.format_desc = util_format_description(static_state->format);
+ bld.format_desc = util_format_description(static_texture_state->format);
bld.dims = dims;
bld.vector_width = lp_type_width(type);
bld.int_type = lp_type_int(32);
bld.coord_type = type;
bld.int_coord_type = lp_int_type(type);
- bld.float_size_type = lp_type_float(32);
- bld.float_size_type.length = dims > 1 ? 4 : 1;
- bld.int_size_type = lp_int_type(bld.float_size_type);
+ bld.float_size_in_type = lp_type_float(32);
+ bld.float_size_in_type.length = dims > 1 ? 4 : 1;
+ bld.int_size_in_type = lp_int_type(bld.float_size_in_type);
bld.texel_type = type;
- bld.perquadf_type = type;
+
+ /* always using the first channel hopefully should be safe,
+ * if not things WILL break in other places anyway.
+ */
+ if (bld.format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB &&
+ bld.format_desc->channel[0].pure_integer) {
+ if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
+ bld.texel_type = lp_type_int_vec(type.width, type.width * type.length);
+ }
+ else if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) {
+ bld.texel_type = lp_type_uint_vec(type.width, type.width * type.length);
+ }
+ }
+ else if (util_format_has_stencil(bld.format_desc) &&
+ !util_format_has_depth(bld.format_desc)) {
+ /* for stencil only formats, sample stencil (uint) */
+ bld.texel_type = lp_type_int_vec(type.width, type.width * type.length);
+ }
+
+ if (!static_texture_state->level_zero_only) {
+ derived_sampler_state.min_mip_filter = static_sampler_state->min_mip_filter;
+ } else {
+ derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ }
+ if (op_type == LP_SAMPLER_OP_GATHER) {
+ /*
+ * gather4 is exactly like GL_LINEAR filtering but in the end skipping
+ * the actual filtering. Using mostly the same paths, so cube face
+ * selection, coord wrapping etc. all naturally uses the same code.
+ */
+ derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ derived_sampler_state.min_img_filter = PIPE_TEX_FILTER_LINEAR;
+ derived_sampler_state.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
+ }
+ mip_filter = derived_sampler_state.min_mip_filter;
+
+ if (0) {
+ debug_printf(" .min_mip_filter = %u\n", derived_sampler_state.min_mip_filter);
+ }
+
+ if (static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY)
+ {
+ /*
+ * Seamless filtering ignores wrap modes.
+ * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for
+ * bilinear it's not correct but way better than using for instance repeat.
+ * Note we even set this for non-seamless. Technically GL allows any wrap
+ * mode, which made sense when supporting true borders (can get seamless
+ * effect with border and CLAMP_TO_BORDER), but gallium doesn't support
+ * borders and d3d9 requires wrap modes to be ignored and it's a pain to fix
+ * up the sampler state (as it makes it texture dependent).
+ */
+ derived_sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ derived_sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ }
+ /*
+ * We could force CLAMP to CLAMP_TO_EDGE here if min/mag filter is nearest,
+ * so AoS path could be used. Not sure it's worth the trouble...
+ */
+
+ min_img_filter = derived_sampler_state.min_img_filter;
+ mag_img_filter = derived_sampler_state.mag_img_filter;
+
+
+ /*
+ * This is all a bit complicated different paths are chosen for performance
+ * reasons.
+ * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for
+ * everything (the last two options are equivalent for 4-wide case).
+ * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad
+ * lod is calculated then the lod value extracted afterwards so making this
+ * case basically the same as far as lod handling is concerned for the
+ * further sample/filter code as the 1 lod for everything case.
+ * Different lod handling mostly shows up when building mipmap sizes
+ * (lp_build_mipmap_level_sizes() and friends) and also in filtering
+ * (getting the fractional part of the lod to the right texels).
+ */
+
+ /*
+ * There are other situations where at least the multiple int lods could be
+ * avoided like min and max lod being equal.
+ */
+ bld.num_mips = bld.num_lods = 1;
+
+ if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) &&
+ (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) &&
+ (static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) &&
+ (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ /*
+ * special case for using per-pixel lod even for implicit lod,
+ * which is generally never required (ok by APIs) except to please
+ * some (somewhat broken imho) tests (because per-pixel face selection
+ * can cause derivatives to be different for pixels outside the primitive
+ * due to the major axis division even if pre-project derivatives are
+ * looking normal).
+ */
+ bld.num_mips = type.length;
+ bld.num_lods = type.length;
+ }
+ else if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT ||
+ (explicit_lod || lod_bias || derivs)) {
+ if ((!op_is_tex && target != PIPE_BUFFER) ||
+ (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld.num_mips = type.length;
+ bld.num_lods = type.length;
+ }
+ else if (op_is_tex && min_img_filter != mag_img_filter) {
+ bld.num_mips = 1;
+ bld.num_lods = type.length;
+ }
+ }
+ /* TODO: for true scalar_lod should only use 1 lod value */
+ else if ((!op_is_tex && explicit_lod && target != PIPE_BUFFER) ||
+ (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld.num_mips = num_quads;
+ bld.num_lods = num_quads;
+ }
+ else if (op_is_tex && min_img_filter != mag_img_filter) {
+ bld.num_mips = 1;
+ bld.num_lods = num_quads;
+ }
+
+
+ bld.lodf_type = type;
/* we want native vector size to be able to use our intrinsics */
- bld.perquadf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1;
- bld.perquadi_type = lp_int_type(bld.perquadf_type);
+ if (bld.num_lods != type.length) {
+ /* TODO: this currently always has to be per-quad or per-element */
+ bld.lodf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1;
+ }
+ bld.lodi_type = lp_int_type(bld.lodf_type);
+ bld.levelf_type = bld.lodf_type;
+ if (bld.num_mips == 1) {
+ bld.levelf_type.length = 1;
+ }
+ bld.leveli_type = lp_int_type(bld.levelf_type);
+ bld.float_size_type = bld.float_size_in_type;
+ /* Note: size vectors may not be native. They contain minified w/h/d/_ values,
+ * with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to 8x4f32 */
+ if (bld.num_mips > 1) {
+ bld.float_size_type.length = bld.num_mips == type.length ?
+ bld.num_mips * bld.float_size_in_type.length :
+ type.length;
+ }
+ bld.int_size_type = lp_int_type(bld.float_size_type);
lp_build_context_init(&bld.float_bld, gallivm, bld.float_type);
lp_build_context_init(&bld.float_vec_bld, gallivm, type);
lp_build_context_init(&bld.int_bld, gallivm, bld.int_type);
lp_build_context_init(&bld.coord_bld, gallivm, bld.coord_type);
lp_build_context_init(&bld.int_coord_bld, gallivm, bld.int_coord_type);
+ lp_build_context_init(&bld.int_size_in_bld, gallivm, bld.int_size_in_type);
+ lp_build_context_init(&bld.float_size_in_bld, gallivm, bld.float_size_in_type);
lp_build_context_init(&bld.int_size_bld, gallivm, bld.int_size_type);
lp_build_context_init(&bld.float_size_bld, gallivm, bld.float_size_type);
lp_build_context_init(&bld.texel_bld, gallivm, bld.texel_type);
- lp_build_context_init(&bld.perquadf_bld, gallivm, bld.perquadf_type);
- lp_build_context_init(&bld.perquadi_bld, gallivm, bld.perquadi_type);
+ lp_build_context_init(&bld.levelf_bld, gallivm, bld.levelf_type);
+ lp_build_context_init(&bld.leveli_bld, gallivm, bld.leveli_type);
+ lp_build_context_init(&bld.lodf_bld, gallivm, bld.lodf_type);
+ lp_build_context_init(&bld.lodi_bld, gallivm, bld.lodi_type);
/* Get the dynamic state */
- tex_width = dynamic_state->width(dynamic_state, gallivm, unit);
- tex_height = dynamic_state->height(dynamic_state, gallivm, unit);
- tex_depth = dynamic_state->depth(dynamic_state, gallivm, unit);
- bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm, unit);
- bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm, unit);
- bld.data_array = dynamic_state->data_ptr(dynamic_state, gallivm, unit);
- /* Note that data_array is an array[level] of pointers to texture images */
-
- s = coords[0];
- t = coords[1];
- r = coords[2];
+ tex_width = dynamic_state->width(dynamic_state, gallivm,
+ context_ptr, texture_index);
+ bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm,
+ context_ptr, texture_index);
+ bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm,
+ context_ptr, texture_index);
+ bld.base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm,
+ context_ptr, texture_index);
+ bld.mip_offsets = dynamic_state->mip_offsets(dynamic_state, gallivm,
+ context_ptr, texture_index);
+ /* Note that mip_offsets is an array[level] of offsets to texture images */
+
+ if (dynamic_state->cache_ptr && thread_data_ptr) {
+ bld.cache = dynamic_state->cache_ptr(dynamic_state, gallivm,
+ thread_data_ptr, texture_index);
+ }
/* width, height, depth as single int vector */
if (dims <= 1) {
bld.int_size = tex_width;
}
else {
- bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_bld.undef,
- tex_width, LLVMConstInt(i32t, 0, 0), "");
+ bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef,
+ tex_width,
+ LLVMConstInt(i32t, 0, 0), "");
if (dims >= 2) {
+ LLVMValueRef tex_height =
+ dynamic_state->height(dynamic_state, gallivm,
+ context_ptr, texture_index);
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
- tex_height, LLVMConstInt(i32t, 1, 0), "");
+ tex_height,
+ LLVMConstInt(i32t, 1, 0), "");
if (dims >= 3) {
+ LLVMValueRef tex_depth =
+ dynamic_state->depth(dynamic_state, gallivm, context_ptr,
+ texture_index);
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
- tex_depth, LLVMConstInt(i32t, 2, 0), "");
+ tex_depth,
+ LLVMConstInt(i32t, 2, 0), "");
}
}
}
+ for (i = 0; i < 5; i++) {
+ newcoords[i] = coords[i];
+ }
+
if (0) {
/* For debug: no-op texture sampling */
lp_build_sample_nop(gallivm,
bld.texel_type,
- num_coords,
- coords,
+ newcoords,
texel_out);
}
+
+ else if (op_type == LP_SAMPLER_OP_FETCH) {
+ lp_build_fetch_texel(&bld, texture_index, newcoords,
+ lod, offsets,
+ texel_out);
+ }
+
else {
- LLVMValueRef lod_ipart = NULL, lod_fpart = NULL;
+ LLVMValueRef lod_fpart = NULL, lod_positive = NULL;
LLVMValueRef ilevel0 = NULL, ilevel1 = NULL;
- unsigned num_quads = type.length / 4;
- const unsigned mip_filter = bld.static_state->min_mip_filter;
- boolean use_aos = util_format_fits_8unorm(bld.format_desc) &&
- lp_is_simple_wrap_mode(static_state->wrap_s) &&
- lp_is_simple_wrap_mode(static_state->wrap_t);
+ boolean use_aos;
+
+ if (util_format_is_pure_integer(static_texture_state->format) &&
+ !util_format_has_depth(bld.format_desc) &&
+ (static_sampler_state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR ||
+ static_sampler_state->min_img_filter == PIPE_TEX_FILTER_LINEAR ||
+ static_sampler_state->mag_img_filter == PIPE_TEX_FILTER_LINEAR)) {
+ /*
+ * Bail if impossible filtering is specified (the awkard additional
+ * depth check is because it is legal in gallium to have things like S8Z24
+ * here which would say it's pure int despite such formats should sample
+ * the depth component).
+ * In GL such filters make the texture incomplete, this makes it robust
+ * against state trackers which set this up regardless (we'd crash in the
+ * lerp later (except for gather)).
+ * Must do this after fetch_texel code since with GL state tracker we'll
+ * get some junk sampler for buffer textures.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_zero(gallivm, type);
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = zero;
+ }
+ return;
+ }
+
+ use_aos = util_format_fits_8unorm(bld.format_desc) &&
+ op_is_tex &&
+ /* not sure this is strictly needed or simply impossible */
+ derived_sampler_state.compare_mode == PIPE_TEX_COMPARE_NONE &&
+ lp_is_simple_wrap_mode(derived_sampler_state.wrap_s);
+
+ use_aos &= bld.num_lods <= num_quads ||
+ derived_sampler_state.min_img_filter ==
+ derived_sampler_state.mag_img_filter;
+ if (dims > 1) {
+ use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_t);
+ if (dims > 2) {
+ use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_r);
+ }
+ }
+ if ((static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) &&
+ derived_sampler_state.seamless_cube_map &&
+ (derived_sampler_state.min_img_filter == PIPE_TEX_FILTER_LINEAR ||
+ derived_sampler_state.mag_img_filter == PIPE_TEX_FILTER_LINEAR)) {
+ /* theoretically possible with AoS filtering but not implemented (complex!) */
+ use_aos = 0;
+ }
if ((gallivm_debug & GALLIVM_DEBUG_PERF) &&
!use_aos && util_format_fits_8unorm(bld.format_desc)) {
debug_printf("%s: using floating point linear filtering for %s\n",
__FUNCTION__, bld.format_desc->short_name);
- debug_printf(" min_img %d mag_img %d mip %d wraps %d wrapt %d\n",
- static_state->min_img_filter,
- static_state->mag_img_filter,
- static_state->min_mip_filter,
- static_state->wrap_s,
- static_state->wrap_t);
+ debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d"
+ " wraps %d wrapt %d wrapr %d\n",
+ derived_sampler_state.min_img_filter,
+ derived_sampler_state.mag_img_filter,
+ derived_sampler_state.min_mip_filter,
+ static_texture_state->target,
+ derived_sampler_state.seamless_cube_map,
+ derived_sampler_state.wrap_s,
+ derived_sampler_state.wrap_t,
+ derived_sampler_state.wrap_r);
}
- lp_build_sample_common(&bld, unit,
- &s, &t, &r,
+ lp_build_sample_common(&bld, texture_index, sampler_index,
+ newcoords,
derivs, lod_bias, explicit_lod,
- &lod_ipart, &lod_fpart,
+ &lod_positive, &lod_fpart,
&ilevel0, &ilevel1);
+ if (use_aos && static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /* The aos path doesn't do seamless filtering so simply add cube layer
+ * to face now.
+ */
+ newcoords[2] = lp_build_add(&bld.int_coord_bld, newcoords[2], newcoords[3]);
+ }
+
/*
* we only try 8-wide sampling with soa as it appears to
- * be a loss with aos with AVX.
+ * be a loss with aos with AVX (but it should work, except
+ * for conformance if min_filter != mag_filter if num_lods > 1).
+ * (It should be faster if we'd support avx2)
*/
- if (num_quads == 1 || (mip_filter == PIPE_TEX_MIPFILTER_NONE &&
- !use_aos)) {
-
- if (num_quads > 1) {
- LLVMValueRef index0 = lp_build_const_int32(gallivm, 0);
- /* These parameters are the same for all quads */
- lod_ipart = LLVMBuildExtractElement(builder, lod_ipart, index0, "");
- ilevel0 = LLVMBuildExtractElement(builder, ilevel0, index0, "");
- }
+ if (num_quads == 1 || !use_aos) {
if (use_aos) {
/* do sampling/filtering with fixed pt arithmetic */
- lp_build_sample_aos(&bld, unit,
- s, t, r,
- lod_ipart, lod_fpart,
+ lp_build_sample_aos(&bld, sampler_index,
+ newcoords[0], newcoords[1],
+ newcoords[2],
+ offsets, lod_positive, lod_fpart,
ilevel0, ilevel1,
texel_out);
}
else {
- lp_build_sample_general(&bld, unit,
- s, t, r,
- lod_ipart, lod_fpart,
+ lp_build_sample_general(&bld, sampler_index,
+ op_type == LP_SAMPLER_OP_GATHER,
+ newcoords, offsets,
+ lod_positive, lod_fpart,
ilevel0, ilevel1,
texel_out);
}
}
else {
- struct lp_build_if_state if_ctx;
- LLVMValueRef notsame_levels, notsame;
- LLVMValueRef index0 = lp_build_const_int32(gallivm, 0);
- LLVMValueRef texels[4];
- LLVMValueRef texelout[4];
unsigned j;
-
- texels[0] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texr");
- texels[1] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texg");
- texels[2] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texb");
- texels[3] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texa");
-
- /* only build the if if we MAY split, otherwise always split */
- if (!use_aos) {
- notsame = lp_build_extract_broadcast(gallivm,
- bld.perquadi_bld.type,
- bld.perquadi_bld.type,
- ilevel0, index0);
- notsame = lp_build_sub(&bld.perquadi_bld, ilevel0, notsame);
- notsame_levels = lp_build_any_true_range(&bld.perquadi_bld, num_quads,
- notsame);
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- notsame = lp_build_extract_broadcast(gallivm,
- bld.perquadi_bld.type,
- bld.perquadi_bld.type,
- ilevel1, index0);
- notsame = lp_build_sub(&bld.perquadi_bld, ilevel1, notsame);
- notsame = lp_build_any_true_range(&bld.perquadi_bld, num_quads, notsame);
- notsame_levels = LLVMBuildOr(builder, notsame_levels, notsame, "");
- }
- lp_build_if(&if_ctx, gallivm, notsame_levels);
+ struct lp_build_sample_context bld4;
+ struct lp_type type4 = type;
+ unsigned i;
+ LLVMValueRef texelout4[4];
+ LLVMValueRef texelouttmp[4][LP_MAX_VECTOR_LENGTH/16];
+
+ type4.length = 4;
+
+ /* Setup our build context */
+ memset(&bld4, 0, sizeof bld4);
+ bld4.gallivm = bld.gallivm;
+ bld4.context_ptr = bld.context_ptr;
+ bld4.static_texture_state = bld.static_texture_state;
+ bld4.static_sampler_state = bld.static_sampler_state;
+ bld4.dynamic_state = bld.dynamic_state;
+ bld4.format_desc = bld.format_desc;
+ bld4.dims = bld.dims;
+ bld4.row_stride_array = bld.row_stride_array;
+ bld4.img_stride_array = bld.img_stride_array;
+ bld4.base_ptr = bld.base_ptr;
+ bld4.mip_offsets = bld.mip_offsets;
+ bld4.int_size = bld.int_size;
+ bld4.cache = bld.cache;
+
+ bld4.vector_width = lp_type_width(type4);
+
+ bld4.float_type = lp_type_float(32);
+ bld4.int_type = lp_type_int(32);
+ bld4.coord_type = type4;
+ bld4.int_coord_type = lp_int_type(type4);
+ bld4.float_size_in_type = lp_type_float(32);
+ bld4.float_size_in_type.length = dims > 1 ? 4 : 1;
+ bld4.int_size_in_type = lp_int_type(bld4.float_size_in_type);
+ bld4.texel_type = bld.texel_type;
+ bld4.texel_type.length = 4;
+
+ bld4.num_mips = bld4.num_lods = 1;
+ if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) &&
+ (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) &&
+ (static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) &&
+ (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld4.num_mips = type4.length;
+ bld4.num_lods = type4.length;
}
-
- {
- struct lp_build_sample_context bld4;
- struct lp_type type4 = type;
- unsigned i;
- LLVMValueRef texelout4[4];
- LLVMValueRef texelouttmp[4][LP_MAX_VECTOR_LENGTH/16];
-
- type4.length = 4;
-
- /* Setup our build context */
- memset(&bld4, 0, sizeof bld4);
- bld4.gallivm = bld.gallivm;
- bld4.static_state = bld.static_state;
- bld4.dynamic_state = bld.dynamic_state;
- bld4.format_desc = bld.format_desc;
- bld4.dims = bld.dims;
- bld4.row_stride_array = bld.row_stride_array;
- bld4.img_stride_array = bld.img_stride_array;
- bld4.data_array = bld.data_array;
- bld4.int_size = bld.int_size;
-
- bld4.vector_width = lp_type_width(type4);
-
- bld4.float_type = lp_type_float(32);
- bld4.int_type = lp_type_int(32);
- bld4.coord_type = type4;
- bld4.int_coord_type = lp_int_type(type4);
- bld4.float_size_type = lp_type_float(32);
- bld4.float_size_type.length = dims > 1 ? 4 : 1;
- bld4.int_size_type = lp_int_type(bld4.float_size_type);
- bld4.texel_type = type4;
- bld4.perquadf_type = type4;
- /* we want native vector size to be able to use our intrinsics */
- bld4.perquadf_type.length = 1;
- bld4.perquadi_type = lp_int_type(bld4.perquadf_type);
-
- lp_build_context_init(&bld4.float_bld, gallivm, bld4.float_type);
- lp_build_context_init(&bld4.float_vec_bld, gallivm, type4);
- lp_build_context_init(&bld4.int_bld, gallivm, bld4.int_type);
- lp_build_context_init(&bld4.coord_bld, gallivm, bld4.coord_type);
- lp_build_context_init(&bld4.int_coord_bld, gallivm, bld4.int_coord_type);
- lp_build_context_init(&bld4.int_size_bld, gallivm, bld4.int_size_type);
- lp_build_context_init(&bld4.float_size_bld, gallivm, bld4.float_size_type);
- lp_build_context_init(&bld4.texel_bld, gallivm, bld4.texel_type);
- lp_build_context_init(&bld4.perquadf_bld, gallivm, bld4.perquadf_type);
- lp_build_context_init(&bld4.perquadi_bld, gallivm, bld4.perquadi_type);
-
- for (i = 0; i < num_quads; i++) {
- LLVMValueRef s4, t4, r4;
- LLVMValueRef lod_iparts, lod_fparts = NULL;
- LLVMValueRef ilevel0s, ilevel1s = NULL;
- LLVMValueRef indexi = lp_build_const_int32(gallivm, i);
-
- s4 = lp_build_extract_range(gallivm, s, 4*i, 4);
- t4 = lp_build_extract_range(gallivm, t, 4*i, 4);
- r4 = lp_build_extract_range(gallivm, r, 4*i, 4);
- lod_iparts = LLVMBuildExtractElement(builder, lod_ipart, indexi, "");
- ilevel0s = LLVMBuildExtractElement(builder, ilevel0, indexi, "");
- if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- ilevel1s = LLVMBuildExtractElement(builder, ilevel1, indexi, "");
- lod_fparts = LLVMBuildExtractElement(builder, lod_fpart, indexi, "");
- }
-
- if (use_aos) {
- /* do sampling/filtering with fixed pt arithmetic */
- lp_build_sample_aos(&bld4, unit,
- s4, t4, r4,
- lod_iparts, lod_fparts,
- ilevel0s, ilevel1s,
- texelout4);
- }
-
- else {
- lp_build_sample_general(&bld4, unit,
- s4, t4, r4,
- lod_iparts, lod_fparts,
- ilevel0s, ilevel1s,
- texelout4);
- }
- for (j = 0; j < 4; j++) {
- texelouttmp[j][i] = texelout4[j];
- }
+ if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT &&
+ (explicit_lod || lod_bias || derivs)) {
+ if ((!op_is_tex && target != PIPE_BUFFER) ||
+ (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ bld4.num_mips = type4.length;
+ bld4.num_lods = type4.length;
}
- for (j = 0; j < 4; j++) {
- texelout[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads);
- LLVMBuildStore(builder, texelout[j], texels[j]);
+ else if (op_is_tex && min_img_filter != mag_img_filter) {
+ bld4.num_mips = 1;
+ bld4.num_lods = type4.length;
}
}
- if (!use_aos) {
- LLVMValueRef ilevel0s, lod_iparts, ilevel1s = NULL;
- lp_build_else(&if_ctx);
-
- /* These parameters are the same for all quads */
- lod_iparts = LLVMBuildExtractElement(builder, lod_ipart, index0, "");
- ilevel0s = LLVMBuildExtractElement(builder, ilevel0, index0, "");
+ /* we want native vector size to be able to use our intrinsics */
+ bld4.lodf_type = type4;
+ if (bld4.num_lods != type4.length) {
+ bld4.lodf_type.length = 1;
+ }
+ bld4.lodi_type = lp_int_type(bld4.lodf_type);
+ bld4.levelf_type = type4;
+ if (bld4.num_mips != type4.length) {
+ bld4.levelf_type.length = 1;
+ }
+ bld4.leveli_type = lp_int_type(bld4.levelf_type);
+ bld4.float_size_type = bld4.float_size_in_type;
+ if (bld4.num_mips > 1) {
+ bld4.float_size_type.length = bld4.num_mips == type4.length ?
+ bld4.num_mips * bld4.float_size_in_type.length :
+ type4.length;
+ }
+ bld4.int_size_type = lp_int_type(bld4.float_size_type);
+
+ lp_build_context_init(&bld4.float_bld, gallivm, bld4.float_type);
+ lp_build_context_init(&bld4.float_vec_bld, gallivm, type4);
+ lp_build_context_init(&bld4.int_bld, gallivm, bld4.int_type);
+ lp_build_context_init(&bld4.coord_bld, gallivm, bld4.coord_type);
+ lp_build_context_init(&bld4.int_coord_bld, gallivm, bld4.int_coord_type);
+ lp_build_context_init(&bld4.int_size_in_bld, gallivm, bld4.int_size_in_type);
+ lp_build_context_init(&bld4.float_size_in_bld, gallivm, bld4.float_size_in_type);
+ lp_build_context_init(&bld4.int_size_bld, gallivm, bld4.int_size_type);
+ lp_build_context_init(&bld4.float_size_bld, gallivm, bld4.float_size_type);
+ lp_build_context_init(&bld4.texel_bld, gallivm, bld4.texel_type);
+ lp_build_context_init(&bld4.levelf_bld, gallivm, bld4.levelf_type);
+ lp_build_context_init(&bld4.leveli_bld, gallivm, bld4.leveli_type);
+ lp_build_context_init(&bld4.lodf_bld, gallivm, bld4.lodf_type);
+ lp_build_context_init(&bld4.lodi_bld, gallivm, bld4.lodi_type);
+
+ for (i = 0; i < num_quads; i++) {
+ LLVMValueRef s4, t4, r4;
+ LLVMValueRef lod_positive4, lod_fpart4 = NULL;
+ LLVMValueRef ilevel04, ilevel14 = NULL;
+ LLVMValueRef offsets4[4] = { NULL };
+ unsigned num_lods = bld4.num_lods;
+
+ s4 = lp_build_extract_range(gallivm, newcoords[0], 4*i, 4);
+ t4 = lp_build_extract_range(gallivm, newcoords[1], 4*i, 4);
+ r4 = lp_build_extract_range(gallivm, newcoords[2], 4*i, 4);
+
+ if (offsets[0]) {
+ offsets4[0] = lp_build_extract_range(gallivm, offsets[0], 4*i, 4);
+ if (dims > 1) {
+ offsets4[1] = lp_build_extract_range(gallivm, offsets[1], 4*i, 4);
+ if (dims > 2) {
+ offsets4[2] = lp_build_extract_range(gallivm, offsets[2], 4*i, 4);
+ }
+ }
+ }
+ lod_positive4 = lp_build_extract_range(gallivm, lod_positive, num_lods * i, num_lods);
+ ilevel04 = bld.num_mips == 1 ? ilevel0 :
+ lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods);
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- ilevel1s = LLVMBuildExtractElement(builder, ilevel1, index0, "");
+ ilevel14 = lp_build_extract_range(gallivm, ilevel1, num_lods * i, num_lods);
+ lod_fpart4 = lp_build_extract_range(gallivm, lod_fpart, num_lods * i, num_lods);
}
if (use_aos) {
/* do sampling/filtering with fixed pt arithmetic */
- lp_build_sample_aos(&bld, unit,
- s, t, r,
- lod_iparts, lod_fpart,
- ilevel0s, ilevel1s,
- texelout);
+ lp_build_sample_aos(&bld4, sampler_index,
+ s4, t4, r4, offsets4,
+ lod_positive4, lod_fpart4,
+ ilevel04, ilevel14,
+ texelout4);
}
else {
- lp_build_sample_general(&bld, unit,
- s, t, r,
- lod_iparts, lod_fpart,
- ilevel0s, ilevel1s,
- texelout);
+ /* this path is currently unreachable and hence might break easily... */
+ LLVMValueRef newcoords4[5];
+ newcoords4[0] = s4;
+ newcoords4[1] = t4;
+ newcoords4[2] = r4;
+ newcoords4[3] = lp_build_extract_range(gallivm, newcoords[3], 4*i, 4);
+ newcoords4[4] = lp_build_extract_range(gallivm, newcoords[4], 4*i, 4);
+
+ lp_build_sample_general(&bld4, sampler_index,
+ op_type == LP_SAMPLER_OP_GATHER,
+ newcoords4, offsets4,
+ lod_positive4, lod_fpart4,
+ ilevel04, ilevel14,
+ texelout4);
}
for (j = 0; j < 4; j++) {
- LLVMBuildStore(builder, texelout[j], texels[j]);
+ texelouttmp[j][i] = texelout4[j];
}
-
- lp_build_endif(&if_ctx);
}
for (j = 0; j < 4; j++) {
- texel_out[j] = LLVMBuildLoad(builder, texels[j], "");
+ texel_out[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads);
}
}
}
- lp_build_sample_compare(&bld, r, texel_out);
+ if (target != PIPE_BUFFER && op_type != LP_SAMPLER_OP_GATHER) {
+ apply_sampler_swizzle(&bld, texel_out);
+ }
+
+ /*
+ * texel type can be a (32bit) int/uint (for pure int formats only),
+ * however we are expected to always return floats (storage is untyped).
+ */
+ if (!bld.texel_type.floating) {
+ unsigned chan;
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = LLVMBuildBitCast(builder, texel_out[chan],
+ lp_build_vec_type(gallivm, type), "");
+ }
+ }
+}
+
- apply_sampler_swizzle(&bld, texel_out);
+#define USE_TEX_FUNC_CALL 1
+
+#define LP_MAX_TEX_FUNC_ARGS 32
+
+static inline void
+get_target_info(enum pipe_texture_target target,
+ unsigned *num_coords, unsigned *num_derivs,
+ unsigned *num_offsets, unsigned *layer)
+{
+ unsigned dims = texture_dims(target);
+ *num_coords = dims;
+ *num_offsets = dims;
+ *num_derivs = (target == PIPE_TEXTURE_CUBE ||
+ target == PIPE_TEXTURE_CUBE_ARRAY) ? 3 : dims;
+ *layer = has_layer_coord(target) ? 2: 0;
+ if (target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /*
+ * dims doesn't include r coord for cubes - this is handled
+ * by layer instead, but need to fix up for cube arrays...
+ */
+ *layer = 3;
+ *num_coords = 3;
+ }
}
+
+/**
+ * Generate the function body for a texture sampling function.
+ */
+static void
+lp_build_sample_gen_func(struct gallivm_state *gallivm,
+ const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct lp_type type,
+ unsigned texture_index,
+ unsigned sampler_index,
+ LLVMValueRef function,
+ unsigned num_args,
+ unsigned sample_key)
+{
+ LLVMBuilderRef old_builder;
+ LLVMBasicBlockRef block;
+ LLVMValueRef coords[5];
+ LLVMValueRef offsets[3] = { NULL };
+ LLVMValueRef lod = NULL;
+ LLVMValueRef context_ptr;
+ LLVMValueRef thread_data_ptr = NULL;
+ LLVMValueRef texel_out[4];
+ struct lp_derivatives derivs;
+ struct lp_derivatives *deriv_ptr = NULL;
+ unsigned num_param = 0;
+ unsigned i, num_coords, num_derivs, num_offsets, layer;
+ enum lp_sampler_lod_control lod_control;
+ boolean need_cache = FALSE;
+
+ lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >>
+ LP_SAMPLER_LOD_CONTROL_SHIFT;
+
+ get_target_info(static_texture_state->target,
+ &num_coords, &num_derivs, &num_offsets, &layer);
+
+ if (dynamic_state->cache_ptr) {
+ const struct util_format_description *format_desc;
+ format_desc = util_format_description(static_texture_state->format);
+ if (format_desc && format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+ need_cache = TRUE;
+ }
+ }
+
+ /* "unpack" arguments */
+ context_ptr = LLVMGetParam(function, num_param++);
+ if (need_cache) {
+ thread_data_ptr = LLVMGetParam(function, num_param++);
+ }
+ for (i = 0; i < num_coords; i++) {
+ coords[i] = LLVMGetParam(function, num_param++);
+ }
+ for (i = num_coords; i < 5; i++) {
+ /* This is rather unfortunate... */
+ coords[i] = lp_build_undef(gallivm, type);
+ }
+ if (layer) {
+ coords[layer] = LLVMGetParam(function, num_param++);
+ }
+ if (sample_key & LP_SAMPLER_SHADOW) {
+ coords[4] = LLVMGetParam(function, num_param++);
+ }
+ if (sample_key & LP_SAMPLER_OFFSETS) {
+ for (i = 0; i < num_offsets; i++) {
+ offsets[i] = LLVMGetParam(function, num_param++);
+ }
+ }
+ if (lod_control == LP_SAMPLER_LOD_BIAS ||
+ lod_control == LP_SAMPLER_LOD_EXPLICIT) {
+ lod = LLVMGetParam(function, num_param++);
+ }
+ else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) {
+ for (i = 0; i < num_derivs; i++) {
+ derivs.ddx[i] = LLVMGetParam(function, num_param++);
+ derivs.ddy[i] = LLVMGetParam(function, num_param++);
+ }
+ deriv_ptr = &derivs;
+ }
+
+ assert(num_args == num_param);
+
+ /*
+ * Function body
+ */
+
+ old_builder = gallivm->builder;
+ block = LLVMAppendBasicBlockInContext(gallivm->context, function, "entry");
+ gallivm->builder = LLVMCreateBuilderInContext(gallivm->context);
+ LLVMPositionBuilderAtEnd(gallivm->builder, block);
+
+ lp_build_sample_soa_code(gallivm,
+ static_texture_state,
+ static_sampler_state,
+ dynamic_state,
+ type,
+ sample_key,
+ texture_index,
+ sampler_index,
+ context_ptr,
+ thread_data_ptr,
+ coords,
+ offsets,
+ deriv_ptr,
+ lod,
+ texel_out);
+
+ LLVMBuildAggregateRet(gallivm->builder, texel_out, 4);
+
+ LLVMDisposeBuilder(gallivm->builder);
+ gallivm->builder = old_builder;
+
+ gallivm_verify_function(gallivm, function);
+}
+
+
+/**
+ * Call the matching function for texture sampling.
+ * If there's no match, generate a new one.
+ */
+static void
+lp_build_sample_soa_func(struct gallivm_state *gallivm,
+ const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ const struct lp_sampler_params *params)
+{
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMModuleRef module = LLVMGetGlobalParent(LLVMGetBasicBlockParent(
+ LLVMGetInsertBlock(builder)));
+ LLVMValueRef function, inst;
+ LLVMValueRef args[LP_MAX_TEX_FUNC_ARGS];
+ LLVMBasicBlockRef bb;
+ LLVMValueRef tex_ret;
+ unsigned num_args = 0;
+ char func_name[64];
+ unsigned i, num_coords, num_derivs, num_offsets, layer;
+ unsigned texture_index = params->texture_index;
+ unsigned sampler_index = params->sampler_index;
+ unsigned sample_key = params->sample_key;
+ const LLVMValueRef *coords = params->coords;
+ const LLVMValueRef *offsets = params->offsets;
+ const struct lp_derivatives *derivs = params->derivs;
+ enum lp_sampler_lod_control lod_control;
+ boolean need_cache = FALSE;
+
+ lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >>
+ LP_SAMPLER_LOD_CONTROL_SHIFT;
+
+ get_target_info(static_texture_state->target,
+ &num_coords, &num_derivs, &num_offsets, &layer);
+
+ if (dynamic_state->cache_ptr) {
+ const struct util_format_description *format_desc;
+ format_desc = util_format_description(static_texture_state->format);
+ if (format_desc && format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
+ /*
+ * This is not 100% correct, if we have cache but the
+ * util_format_s3tc_prefer is true the cache won't get used
+ * regardless (could hook up the block decode there...) */
+ need_cache = TRUE;
+ }
+ }
+ /*
+ * texture function matches are found by name.
+ * Thus the name has to include both the texture and sampler unit
+ * (which covers all static state) plus the actual texture function
+ * (including things like offsets, shadow coord, lod control).
+ * Additionally lod_property has to be included too.
+ */
+
+ util_snprintf(func_name, sizeof(func_name), "texfunc_res_%d_sam_%d_%x",
+ texture_index, sampler_index, sample_key);
+
+ function = LLVMGetNamedFunction(module, func_name);
+
+ if(!function) {
+ LLVMTypeRef arg_types[LP_MAX_TEX_FUNC_ARGS];
+ LLVMTypeRef ret_type;
+ LLVMTypeRef function_type;
+ LLVMTypeRef val_type[4];
+ unsigned num_param = 0;
+
+ /*
+ * Generate the function prototype.
+ */
+
+ arg_types[num_param++] = LLVMTypeOf(params->context_ptr);
+ if (need_cache) {
+ arg_types[num_param++] = LLVMTypeOf(params->thread_data_ptr);
+ }
+ for (i = 0; i < num_coords; i++) {
+ arg_types[num_param++] = LLVMTypeOf(coords[0]);
+ assert(LLVMTypeOf(coords[0]) == LLVMTypeOf(coords[i]));
+ }
+ if (layer) {
+ arg_types[num_param++] = LLVMTypeOf(coords[layer]);
+ assert(LLVMTypeOf(coords[0]) == LLVMTypeOf(coords[layer]));
+ }
+ if (sample_key & LP_SAMPLER_SHADOW) {
+ arg_types[num_param++] = LLVMTypeOf(coords[0]);
+ }
+ if (sample_key & LP_SAMPLER_OFFSETS) {
+ for (i = 0; i < num_offsets; i++) {
+ arg_types[num_param++] = LLVMTypeOf(offsets[0]);
+ assert(LLVMTypeOf(offsets[0]) == LLVMTypeOf(offsets[i]));
+ }
+ }
+ if (lod_control == LP_SAMPLER_LOD_BIAS ||
+ lod_control == LP_SAMPLER_LOD_EXPLICIT) {
+ arg_types[num_param++] = LLVMTypeOf(params->lod);
+ }
+ else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) {
+ for (i = 0; i < num_derivs; i++) {
+ arg_types[num_param++] = LLVMTypeOf(derivs->ddx[i]);
+ arg_types[num_param++] = LLVMTypeOf(derivs->ddy[i]);
+ assert(LLVMTypeOf(derivs->ddx[0]) == LLVMTypeOf(derivs->ddx[i]));
+ assert(LLVMTypeOf(derivs->ddy[0]) == LLVMTypeOf(derivs->ddy[i]));
+ }
+ }
+
+ val_type[0] = val_type[1] = val_type[2] = val_type[3] =
+ lp_build_vec_type(gallivm, params->type);
+ ret_type = LLVMStructTypeInContext(gallivm->context, val_type, 4, 0);
+ function_type = LLVMFunctionType(ret_type, arg_types, num_param, 0);
+ function = LLVMAddFunction(module, func_name, function_type);
+
+ for (i = 0; i < num_param; ++i) {
+ if(LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind) {
+ LLVMAddAttribute(LLVMGetParam(function, i), LLVMNoAliasAttribute);
+ }
+ }
+
+ LLVMSetFunctionCallConv(function, LLVMFastCallConv);
+ LLVMSetLinkage(function, LLVMPrivateLinkage);
+
+ lp_build_sample_gen_func(gallivm,
+ static_texture_state,
+ static_sampler_state,
+ dynamic_state,
+ params->type,
+ texture_index,
+ sampler_index,
+ function,
+ num_param,
+ sample_key);
+ }
+
+ num_args = 0;
+ args[num_args++] = params->context_ptr;
+ if (need_cache) {
+ args[num_args++] = params->thread_data_ptr;
+ }
+ for (i = 0; i < num_coords; i++) {
+ args[num_args++] = coords[i];
+ }
+ if (layer) {
+ args[num_args++] = coords[layer];
+ }
+ if (sample_key & LP_SAMPLER_SHADOW) {
+ args[num_args++] = coords[4];
+ }
+ if (sample_key & LP_SAMPLER_OFFSETS) {
+ for (i = 0; i < num_offsets; i++) {
+ args[num_args++] = offsets[i];
+ }
+ }
+ if (lod_control == LP_SAMPLER_LOD_BIAS ||
+ lod_control == LP_SAMPLER_LOD_EXPLICIT) {
+ args[num_args++] = params->lod;
+ }
+ else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) {
+ for (i = 0; i < num_derivs; i++) {
+ args[num_args++] = derivs->ddx[i];
+ args[num_args++] = derivs->ddy[i];
+ }
+ }
+
+ assert(num_args <= LP_MAX_TEX_FUNC_ARGS);
+
+ tex_ret = LLVMBuildCall(builder, function, args, num_args, "");
+ bb = LLVMGetInsertBlock(builder);
+ inst = LLVMGetLastInstruction(bb);
+ LLVMSetInstructionCallConv(inst, LLVMFastCallConv);
+
+ for (i = 0; i < 4; i++) {
+ params->texel[i] = LLVMBuildExtractValue(gallivm->builder, tex_ret, i, "");
+ }
+}
+
+
+/**
+ * Build texture sampling code.
+ * Either via a function call or inline it directly.
+ */
+void
+lp_build_sample_soa(const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct gallivm_state *gallivm,
+ const struct lp_sampler_params *params)
+{
+ boolean use_tex_func = FALSE;
+
+ /*
+ * Do not use a function call if the sampling is "simple enough".
+ * We define this by
+ * a) format
+ * b) no mips (either one level only or no mip filter)
+ * No mips will definitely make the code smaller, though
+ * the format requirement is a bit iffy - there's some (SoA) formats
+ * which definitely generate less code. This does happen to catch
+ * some important cases though which are hurt quite a bit by using
+ * a call (though not really because of the call overhead but because
+ * they are reusing the same texture unit with some of the same
+ * parameters).
+ * Ideally we'd let llvm recognize this stuff by doing IPO passes.
+ */
+
+ if (USE_TEX_FUNC_CALL) {
+ const struct util_format_description *format_desc;
+ boolean simple_format;
+ boolean simple_tex;
+ enum lp_sampler_op_type op_type;
+ format_desc = util_format_description(static_texture_state->format);
+ simple_format = !format_desc ||
+ (util_format_is_rgba8_variant(format_desc) &&
+ format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB);
+
+ op_type = (params->sample_key & LP_SAMPLER_OP_TYPE_MASK) >>
+ LP_SAMPLER_OP_TYPE_SHIFT;
+ simple_tex =
+ op_type != LP_SAMPLER_OP_TEXTURE ||
+ ((static_sampler_state->min_mip_filter == PIPE_TEX_MIPFILTER_NONE ||
+ static_texture_state->level_zero_only == TRUE) &&
+ static_sampler_state->min_img_filter == static_sampler_state->mag_img_filter);
+
+ use_tex_func = format_desc && !(simple_format && simple_tex);
+ }
+
+ if (use_tex_func) {
+ lp_build_sample_soa_func(gallivm,
+ static_texture_state,
+ static_sampler_state,
+ dynamic_state,
+ params);
+ }
+ else {
+ lp_build_sample_soa_code(gallivm,
+ static_texture_state,
+ static_sampler_state,
+ dynamic_state,
+ params->type,
+ params->sample_key,
+ params->texture_index,
+ params->sampler_index,
+ params->context_ptr,
+ params->thread_data_ptr,
+ params->coords,
+ params->offsets,
+ params->derivs,
+ params->lod,
+ params->texel);
+ }
+}
+
+
void
lp_build_size_query_soa(struct gallivm_state *gallivm,
- const struct lp_sampler_static_state *static_state,
+ const struct lp_static_texture_state *static_state,
struct lp_sampler_dynamic_state *dynamic_state,
struct lp_type int_type,
- unsigned unit,
+ unsigned texture_unit,
+ unsigned target,
+ LLVMValueRef context_ptr,
+ boolean is_sviewinfo,
+ enum lp_sampler_lod_property lod_property,
LLVMValueRef explicit_lod,
LLVMValueRef *sizes_out)
{
- LLVMValueRef lod;
- LLVMValueRef size;
+ LLVMValueRef lod, level, size;
+ LLVMValueRef first_level = NULL;
int dims, i;
- struct lp_build_context bld_int_vec;
+ boolean has_array;
+ unsigned num_lods = 1;
+ struct lp_build_context bld_int_vec4;
- switch (static_state->target) {
- case PIPE_TEXTURE_1D:
- case PIPE_BUFFER:
- dims = 1;
- break;
- case PIPE_TEXTURE_2D:
- case PIPE_TEXTURE_CUBE:
- case PIPE_TEXTURE_RECT:
- dims = 2;
- break;
- case PIPE_TEXTURE_3D:
- dims = 3;
- break;
+ if (static_state->format == PIPE_FORMAT_NONE) {
+ /*
+ * If there's nothing bound, format is NONE, and we must return
+ * all zero as mandated by d3d10 in this case.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_const_vec(gallivm, int_type, 0.0F);
+ for (chan = 0; chan < 4; chan++) {
+ sizes_out[chan] = zero;
+ }
+ return;
+ }
+
+ /*
+ * Do some sanity verification about bound texture and shader dcl target.
+ * Not entirely sure what's possible but assume array/non-array
+ * always compatible (probably not ok for OpenGL but d3d10 has no
+ * distinction of arrays at the resource level).
+ * Everything else looks bogus (though not entirely sure about rect/2d).
+ * Currently disabled because it causes assertion failures if there's
+ * nothing bound (or rather a dummy texture, not that this case would
+ * return the right values).
+ */
+ if (0 && static_state->target != target) {
+ if (static_state->target == PIPE_TEXTURE_1D)
+ assert(target == PIPE_TEXTURE_1D_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_1D_ARRAY)
+ assert(target == PIPE_TEXTURE_1D);
+ else if (static_state->target == PIPE_TEXTURE_2D)
+ assert(target == PIPE_TEXTURE_2D_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_2D_ARRAY)
+ assert(target == PIPE_TEXTURE_2D);
+ else if (static_state->target == PIPE_TEXTURE_CUBE)
+ assert(target == PIPE_TEXTURE_CUBE_ARRAY);
+ else if (static_state->target == PIPE_TEXTURE_CUBE_ARRAY)
+ assert(target == PIPE_TEXTURE_CUBE);
+ else
+ assert(0);
+ }
+ dims = texture_dims(target);
+
+ switch (target) {
+ case PIPE_TEXTURE_1D_ARRAY:
+ case PIPE_TEXTURE_2D_ARRAY:
+ case PIPE_TEXTURE_CUBE_ARRAY:
+ has_array = TRUE;
+ break;
default:
- assert(0);
- return;
+ has_array = FALSE;
+ break;
}
assert(!int_type.floating);
- lp_build_context_init(&bld_int_vec, gallivm, lp_type_int_vec(32, 128));
+ lp_build_context_init(&bld_int_vec4, gallivm, lp_type_int_vec(32, 128));
if (explicit_lod) {
- LLVMValueRef first_level;
- lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod, lp_build_const_int32(gallivm, 0), "");
- first_level = dynamic_state->first_level(dynamic_state, gallivm, unit);
- lod = lp_build_broadcast_scalar(&bld_int_vec,
- LLVMBuildAdd(gallivm->builder, lod, first_level, "lod"));
-
+ /* FIXME: this needs to honor per-element lod */
+ lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod,
+ lp_build_const_int32(gallivm, 0), "");
+ first_level = dynamic_state->first_level(dynamic_state, gallivm,
+ context_ptr, texture_unit);
+ level = LLVMBuildAdd(gallivm->builder, lod, first_level, "level");
+ lod = lp_build_broadcast_scalar(&bld_int_vec4, level);
} else {
- lod = bld_int_vec.zero;
+ lod = bld_int_vec4.zero;
}
- size = bld_int_vec.undef;
+ size = bld_int_vec4.undef;
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->width(dynamic_state, gallivm, unit),
+ dynamic_state->width(dynamic_state, gallivm,
+ context_ptr, texture_unit),
lp_build_const_int32(gallivm, 0), "");
if (dims >= 2) {
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->height(dynamic_state, gallivm, unit),
+ dynamic_state->height(dynamic_state, gallivm,
+ context_ptr, texture_unit),
lp_build_const_int32(gallivm, 1), "");
}
if (dims >= 3) {
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->depth(dynamic_state, gallivm, unit),
+ dynamic_state->depth(dynamic_state, gallivm,
+ context_ptr, texture_unit),
lp_build_const_int32(gallivm, 2), "");
}
- size = lp_build_minify(&bld_int_vec, size, lod);
+ size = lp_build_minify(&bld_int_vec4, size, lod, TRUE);
+
+ if (has_array) {
+ LLVMValueRef layers = dynamic_state->depth(dynamic_state, gallivm,
+ context_ptr, texture_unit);
+ if (target == PIPE_TEXTURE_CUBE_ARRAY) {
+ /*
+ * It looks like GL wants number of cubes, d3d10.1 has it undefined?
+ * Could avoid this by passing in number of cubes instead of total
+ * number of layers (might make things easier elsewhere too).
+ */
+ LLVMValueRef six = lp_build_const_int32(gallivm, 6);
+ layers = LLVMBuildSDiv(gallivm->builder, layers, six, "");
+ }
+ size = LLVMBuildInsertElement(gallivm->builder, size, layers,
+ lp_build_const_int32(gallivm, dims), "");
+ }
- for (i=0; i < dims; i++) {
- sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec.type, int_type,
+ /*
+ * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels)
+ * if level is out of bounds (note this can't cover unbound texture
+ * here, which also requires returning zero).
+ */
+ if (explicit_lod && is_sviewinfo) {
+ LLVMValueRef last_level, out, out1;
+ struct lp_build_context leveli_bld;
+
+ /* everything is scalar for now */
+ lp_build_context_init(&leveli_bld, gallivm, lp_type_int_vec(32, 32));
+ last_level = dynamic_state->last_level(dynamic_state, gallivm,
+ context_ptr, texture_unit);
+
+ out = lp_build_cmp(&leveli_bld, PIPE_FUNC_LESS, level, first_level);
+ out1 = lp_build_cmp(&leveli_bld, PIPE_FUNC_GREATER, level, last_level);
+ out = lp_build_or(&leveli_bld, out, out1);
+ if (num_lods == 1) {
+ out = lp_build_broadcast_scalar(&bld_int_vec4, out);
+ }
+ else {
+ /* TODO */
+ assert(0);
+ }
+ size = lp_build_andnot(&bld_int_vec4, size, out);
+ }
+ for (i = 0; i < dims + (has_array ? 1 : 0); i++) {
+ sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec4.type, int_type,
size,
lp_build_const_int32(gallivm, i));
}
+ if (is_sviewinfo) {
+ for (; i < 4; i++) {
+ sizes_out[i] = lp_build_const_vec(gallivm, int_type, 0.0);
+ }
+ }
+
+ /*
+ * if there's no explicit_lod (buffers, rects) queries requiring nr of
+ * mips would be illegal.
+ */
+ if (is_sviewinfo && explicit_lod) {
+ struct lp_build_context bld_int_scalar;
+ LLVMValueRef num_levels;
+ lp_build_context_init(&bld_int_scalar, gallivm, lp_type_int(32));
+
+ if (static_state->level_zero_only) {
+ num_levels = bld_int_scalar.one;
+ }
+ else {
+ LLVMValueRef last_level;
+
+ last_level = dynamic_state->last_level(dynamic_state, gallivm,
+ context_ptr, texture_unit);
+ num_levels = lp_build_sub(&bld_int_scalar, last_level, first_level);
+ num_levels = lp_build_add(&bld_int_scalar, num_levels, bld_int_scalar.one);
+ }
+ sizes_out[3] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, int_type),
+ num_levels);
+ }
}
projects / mesa.git / blobdiff