#include "util/u_dump.h"
#include "util/u_memory.h"
#include "util/u_math.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
#include "util/u_cpu_detect.h"
+#include "util/format_rgb9e5.h"
#include "lp_bld_debug.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
#include "lp_bld_struct.h"
#include "lp_bld_quad.h"
#include "lp_bld_pack.h"
+#include "lp_bld_intr.h"
+#include "lp_bld_misc.h"
/**
*/
static void
lp_build_sample_texel_soa(struct lp_build_sample_context *bld,
- unsigned sampler_unit,
LLVMValueRef width,
LLVMValueRef height,
LLVMValueRef depth,
lp_build_fetch_rgba_soa(bld->gallivm,
bld->format_desc,
- bld->texel_type,
+ bld->texel_type, TRUE,
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, sampler_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);
-
- if (!bld->texel_type.floating) {
- border_chan_vec = LLVMBuildBitCast(builder, border_chan_vec,
- bld->texel_bld.vec_type, "");
+ unsigned chan_s;
+ /* reverse-map channel... */
+ if (util_format_has_stencil(format_desc)) {
+ if (chan == 0)
+ chan_s = 0;
+ else
+ break;
+ }
+ else {
+ 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]);
}
- texel_out[chan] = lp_build_select(&bld->texel_bld, use_border,
- border_chan_vec, texel_out[chan]);
}
}
}
/**
- * Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes.
+ * Helper to compute the mirror function for the PIPE_WRAP_MIRROR_REPEAT mode.
+ * (Note that with pot sizes could do this much more easily post-scale
+ * with some bit arithmetic.)
*/
static LLVMValueRef
lp_build_coord_mirror(struct lp_build_sample_context *bld,
- LLVMValueRef coord)
+ LLVMValueRef coord, boolean posOnly)
{
struct lp_build_context *coord_bld = &bld->coord_bld;
- struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
- LLVMValueRef fract, flr, isOdd;
-
- lp_build_ifloor_fract(coord_bld, coord, &flr, &fract);
-
- /* isOdd = flr & 1 */
- isOdd = LLVMBuildAnd(bld->gallivm->builder, flr, int_coord_bld->one, "");
+ LLVMValueRef fract;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5);
- /* make coord positive or negative depending on isOdd */
- coord = lp_build_set_sign(coord_bld, fract, isOdd);
+ /*
+ * We can just use 2*(x - round(0.5*x)) to do all the mirroring,
+ * it all works out. (The result is in range [-1, 1.0], negative if
+ * the coord is in the "odd" section, otherwise positive.)
+ */
- /* convert isOdd to float */
- isOdd = lp_build_int_to_float(coord_bld, isOdd);
+ coord = lp_build_mul(coord_bld, coord, half);
+ fract = lp_build_round(coord_bld, coord);
+ fract = lp_build_sub(coord_bld, coord, fract);
+ coord = lp_build_add(coord_bld, fract, fract);
- /* add isOdd to coord */
- coord = lp_build_add(coord_bld, coord, isOdd);
+ if (posOnly) {
+ /*
+ * Theoretically it's not quite 100% accurate because the spec says
+ * that ultimately a scaled coord of -x.0 should map to int coord
+ * -x + 1 with mirroring, not -x (this does not matter for bilinear
+ * filtering).
+ */
+ coord = lp_build_abs(coord_bld, coord);
+ /* kill off NaNs */
+ /* XXX: not safe without arch rounding, fract can be anything. */
+ coord = lp_build_max_ext(coord_bld, coord, coord_bld->zero,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
+ }
return coord;
}
* we avoided the 0.5/length division before the repeat wrap,
* now need to fix up edge cases with selects
*/
+ /*
+ * Note we do a float (unordered) compare so we can eliminate NaNs.
+ * (Otherwise would need fract_safe above).
+ */
+ mask = lp_build_compare(coord_bld->gallivm, coord_bld->type,
+ PIPE_FUNC_LESS, coord_f, coord_bld->zero);
+
/* convert to int, compute lerp weight */
lp_build_ifloor_fract(coord_bld, coord_f, coord0_i, weight_f);
- mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type,
- PIPE_FUNC_LESS, *coord0_i, int_coord_bld->zero);
*coord0_i = lp_build_select(int_coord_bld, mask, length_minus_one, *coord0_i);
}
*/
static void
lp_build_sample_wrap_linear(struct lp_build_sample_context *bld,
+ boolean is_gather,
LLVMValueRef coord,
LLVMValueRef length,
LLVMValueRef length_f,
coord = lp_build_add(coord_bld, coord, offset);
}
- /* clamp to [0, length] */
+ /*
+ * clamp to [0, length]
+ *
+ * Unlike some other wrap modes, this should be correct for gather
+ * too. GL_CLAMP explicitly does this clamp on the coord prior to
+ * actual wrapping (which is per sample).
+ */
coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f);
coord = lp_build_sub(coord_bld, coord, half);
}
/* 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);
+ coord = lp_build_min_ext(coord_bld, coord, length_f,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
+ if (!is_gather) {
+ /* 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);
+ } else {
+ /*
+ * The non-gather path will end up with coords 0, 1 if coord was
+ * smaller than 0.5 (with corresponding weight 0.0 so it doesn't
+ * really matter what the second coord is). But for gather, we
+ * really need to end up with coords 0, 0.
+ */
+ coord = lp_build_max(coord_bld, coord, coord_bld->zero);
+ coord0 = lp_build_sub(coord_bld, coord, half);
+ coord1 = lp_build_add(coord_bld, coord, half);
+ /* Values range ([-0.5, length_f - 0.5], [0.5, length_f + 0.5] */
+ coord0 = lp_build_itrunc(coord_bld, coord0);
+ coord1 = lp_build_itrunc(coord_bld, coord1);
+ weight = coord_bld->undef;
+ }
/* coord1 = min(coord1, length-1) */
coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
break;
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 */
+ /*
+ * We don't need any clamp. Technically, for very large (pos or neg)
+ * (or infinite) values, clamp against [-length, length] would be
+ * correct, but we don't need to guarantee any specific
+ * result for such coords (the ifloor will be undefined, but for modes
+ * requiring border all resulting coords are safe).
+ */
coord = lp_build_sub(coord_bld, coord, half);
/* convert to int, compute lerp weight */
lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
- /* compute mirror function */
- coord = lp_build_coord_mirror(bld, coord);
-
- /* scale coord to length */
- coord = lp_build_mul(coord_bld, coord, length_f);
- coord = lp_build_sub(coord_bld, coord, half);
if (offset) {
offset = lp_build_int_to_float(coord_bld, offset);
+ offset = lp_build_div(coord_bld, offset, length_f);
coord = lp_build_add(coord_bld, coord, offset);
}
+ if (!is_gather) {
+ /* compute mirror function */
+ coord = lp_build_coord_mirror(bld, coord, TRUE);
- /* 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);
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_sub(coord_bld, coord, half);
+
+ /* convert to int, compute lerp weight */
+ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+
+ /* coord0 = max(coord0, 0) */
+ coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+ } else {
+ /*
+ * This is pretty reasonable in the end, all what the tests care
+ * about is nasty edge cases (scaled coords x.5, so the individual
+ * coords are actually integers, which is REALLY tricky to get right
+ * due to this working differently both for negative numbers as well
+ * as for even/odd cases). But with enough magic it's not too complex
+ * after all.
+ * Maybe should try a bit arithmetic one though for POT textures...
+ */
+ LLVMValueRef isNeg;
+ /*
+ * Wrapping just once still works, even though it means we can
+ * get "wrong" sign due to performing mirror in the middle of the
+ * two coords (because this can only happen very near the odd/even
+ * edges, so both coords will actually end up as 0 or length - 1
+ * in the end).
+ * For GL4 gather with per-sample offsets we'd need to the mirroring
+ * per coord too.
+ */
+ coord = lp_build_coord_mirror(bld, coord, FALSE);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+
+ /*
+ * NaNs should be safe here, we'll do away with them with
+ * the ones' complement plus min.
+ */
+ coord0 = lp_build_sub(coord_bld, coord, half);
+ coord0 = lp_build_ifloor(coord_bld, coord0);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* ones complement for neg numbers (mirror(negX) = X - 1) */
+ isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS,
+ coord0, int_coord_bld->zero);
+ coord0 = lp_build_xor(int_coord_bld, coord0, isNeg);
+ isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS,
+ coord1, int_coord_bld->zero);
+ coord1 = lp_build_xor(int_coord_bld, coord1, isNeg);
+ coord0 = lp_build_min(int_coord_bld, coord0, length_minus_one);
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
- /* coord0 = max(coord0, 0) */
- coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
- /* coord1 = min(coord1, length-1) */
- coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+ weight = coord_bld->undef;
+ }
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
offset = lp_build_int_to_float(coord_bld, offset);
coord = lp_build_add(coord_bld, coord, offset);
}
+ /*
+ * XXX: probably not correct for gather, albeit I'm not
+ * entirely sure as it's poorly specified. The wrapping looks
+ * correct according to the spec which is against gl 1.2.1,
+ * however negative values will be swapped - gl re-specified
+ * wrapping with newer versions (no more pre-clamp except with
+ * GL_CLAMP).
+ */
coord = lp_build_abs(coord_bld, coord);
/* clamp to [0, length] */
- coord = lp_build_min(coord_bld, coord, length_f);
+ coord = lp_build_min_ext(coord_bld, coord, length_f,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
coord = lp_build_sub(coord_bld, coord, half);
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 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);
+ if (!is_gather) {
+ coord = lp_build_abs(coord_bld, coord);
+
+ /* clamp to length max */
+ coord = lp_build_min_ext(coord_bld, coord, length_f,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
+ /* 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);
+ } else {
+ /*
+ * The non-gather path will swap coord0/1 if coord was negative,
+ * which is ok for filtering since the filter weight matches
+ * accordingly. Also, if coord is close to zero, coord0/1 will
+ * be 0 and 1, instead of 0 and 0 (again ok due to filter
+ * weight being 0.0). Both issues need to be fixed for gather.
+ */
+ LLVMValueRef isNeg;
+
+ /*
+ * Actually wanted to cheat here and use:
+ * coord1 = lp_build_iround(coord_bld, coord);
+ * but it's not good enough for some tests (even piglit
+ * textureGather is set up in a way so the coords area always
+ * .5, that is right at the crossover points).
+ * So do ordinary sub/floor, then do ones' complement
+ * for negative numbers.
+ * (Note can't just do sub|add/abs/itrunc per coord neither -
+ * because the spec demands that mirror(3.0) = 3 but
+ * mirror(-3.0) = 2.)
+ */
+ coord = lp_build_sub(coord_bld, coord, half);
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord0,
+ int_coord_bld->zero);
+ coord0 = lp_build_xor(int_coord_bld, isNeg, coord0);
+ coord0 = lp_build_min(int_coord_bld, coord0, length_minus_one);
+
+ isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord1,
+ int_coord_bld->zero);
+ coord1 = lp_build_xor(int_coord_bld, isNeg, coord1);
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+
+ weight = coord_bld->undef;
+ }
}
break;
offset = lp_build_int_to_float(coord_bld, offset);
coord = lp_build_add(coord_bld, coord, offset);
}
+ /*
+ * XXX: probably not correct for gather due to swapped
+ * order if coord is negative (same rationale as for
+ * MIRROR_CLAMP).
+ */
coord = lp_build_abs(coord_bld, coord);
- /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */
- /* skip clamp - always positive, and other side
- only potentially matters for very large coords */
+ /*
+ * We don't need any clamp. Technically, for very large
+ * (or infinite) values, clamp against length would be
+ * correct, but we don't need to guarantee any specific
+ * result for such coords (the ifloor will be undefined, but
+ * for modes requiring border all resulting coords are safe).
+ */
coord = lp_build_sub(coord_bld, coord, half);
/* convert to int, compute lerp weight */
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);
- if (offset) {
- icoord = lp_build_add(int_coord_bld, icoord, offset);
- }
/* clamp to [0, length - 1]. */
icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero,
coord = lp_build_add(coord_bld, coord, offset);
}
/* compute mirror function */
- coord = lp_build_coord_mirror(bld, coord);
+ coord = lp_build_coord_mirror(bld, coord, TRUE);
/* scale coord to length */
assert(bld->static_sampler_state->normalized_coords);
/* itrunc == ifloor here */
icoord = lp_build_itrunc(coord_bld, coord);
-
- /* clamp to [0, length - 1] */
- icoord = lp_build_min(int_coord_bld, icoord, length_minus_one);
+ /*
+ * Use unsigned min due to possible undef values (NaNs, overflow)
+ */
+ {
+ struct lp_build_context abs_coord_bld = *int_coord_bld;
+ abs_coord_bld.type.sign = FALSE;
+ /* clamp to [0, length - 1] */
+ icoord = lp_build_min(&abs_coord_bld, icoord, length_minus_one);
+ }
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
}
+/**
+ * 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 sampler_unit,
LLVMValueRef size,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
LLVMValueRef mipoffsets,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ const LLVMValueRef *coords,
const LLVMValueRef *offsets,
LLVMValueRef colors_out[4])
{
/*
* Compute integer texcoords.
*/
- x = lp_build_sample_wrap_nearest(bld, s, width_vec, flt_width_vec, offsets[0],
+ 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, offsets[1],
+ 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, offsets[2],
+ 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");
}
}
- if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE ||
- bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY ||
- bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) {
- z = 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 = coords[2];
+ }
lp_build_name(z, "tex.z.layer");
}
/*
* Get texture colors.
*/
- lp_build_sample_texel_soa(bld, sampler_unit,
+ lp_build_sample_texel_soa(bld,
width_vec, height_vec, depth_vec,
x, y, z,
row_stride_vec, img_stride_vec,
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 sampler_unit,
+ boolean is_gather,
LLVMValueRef size,
+ LLVMValueRef linear_mask,
LLVMValueRef row_stride_vec,
LLVMValueRef img_stride_vec,
LLVMValueRef data_ptr,
LLVMValueRef mipoffsets,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ const 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 = NULL, z0 = NULL, x1, y1 = NULL, z1 = NULL;
+ 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;
+ unsigned chan_swiz = bld->static_texture_state->swizzle_r;
+
+ if (is_gather) {
+ switch (bld->gather_comp) {
+ case 0: chan_swiz = bld->static_texture_state->swizzle_r; break;
+ case 1: chan_swiz = bld->static_texture_state->swizzle_g; break;
+ case 2: chan_swiz = bld->static_texture_state->swizzle_b; break;
+ case 3: chan_swiz = bld->static_texture_state->swizzle_a; break;
+ default:
+ break;
+ }
+ }
+
+ 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;
+
+ /*
+ * Disable accurate cube corners for integer textures, which should only
+ * get here in the gather path.
+ */
+ accurate_cube_corners = ACCURATE_CUBE_CORNERS && seamless_cube_filter &&
+ !util_format_is_pure_integer(bld->static_texture_state->format);
lp_build_extract_image_sizes(bld,
&bld->int_size_bld,
/*
* Compute integer texcoords.
*/
- lp_build_sample_wrap_linear(bld, s, width_vec, flt_width_vec, offsets[0],
- bld->static_texture_state->pot_width,
- bld->static_sampler_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, offsets[1],
- bld->static_texture_state->pot_height,
- bld->static_sampler_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, is_gather, 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, offsets[2],
- bld->static_texture_state->pot_depth,
- bld->static_sampler_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, is_gather, 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, is_gather, 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");
}
}
- if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE ||
- bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY ||
- bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) {
- z0 = z1 = r; /* cube face or array layer */
- lp_build_name(z0, "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 coord0, coord1, 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);
+ /*
+ * The coords should all be between [0,1] however we can have NaNs,
+ * which will wreak havoc. In particular the y1_clamped value below
+ * can be -INT_MAX (on x86) and be propagated right through (probably
+ * other values might be bogus in the end too).
+ * So kill off the NaNs here.
+ */
+ coord0 = lp_build_max_ext(coord_bld, coords[0], coord_bld->zero,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
+ coord0 = lp_build_mul(coord_bld, coord0, flt_width_vec);
+ /* instead of clamp, build mask if overflowed */
+ coord0 = lp_build_sub(coord_bld, coord0, half);
+ /* convert to int, compute lerp weight */
+ /* not ideal with AVX (and no AVX2) */
+ lp_build_ifloor_fract(coord_bld, coord0, &x0, &s_fpart);
+ x1 = lp_build_add(ivec_bld, x0, ivec_bld->one);
+ coord1 = lp_build_max_ext(coord_bld, coords[1], coord_bld->zero,
+ GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN);
+ coord1 = lp_build_mul(coord_bld, coord1, flt_height_vec);
+ coord1 = lp_build_sub(coord_bld, coord1, half);
+ lp_build_ifloor_fract(coord_bld, coord1, &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]);
+ }
+
+ 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 {
+ LLVMBuildStore(builder, face, zs[0]);
+ LLVMBuildStore(builder, face, zs[1]);
+ LLVMBuildStore(builder, face, zs[2]);
+ LLVMBuildStore(builder, face, zs[3]);
+ }
+
+ lp_build_endif(&edge_if);
+
+ x00 = LLVMBuildLoad(builder, xs[0], "");
+ x01 = LLVMBuildLoad(builder, xs[1], "");
+ x10 = LLVMBuildLoad(builder, xs[2], "");
+ x11 = LLVMBuildLoad(builder, xs[3], "");
+ y00 = LLVMBuildLoad(builder, ys[0], "");
+ y01 = LLVMBuildLoad(builder, ys[1], "");
+ y10 = LLVMBuildLoad(builder, ys[2], "");
+ y11 = LLVMBuildLoad(builder, ys[3], "");
+ z00 = LLVMBuildLoad(builder, zs[0], "");
+ z01 = LLVMBuildLoad(builder, zs[1], "");
+ z10 = LLVMBuildLoad(builder, zs[2], "");
+ z11 = LLVMBuildLoad(builder, zs[3], "");
}
+ if (linear_mask) {
+ /*
+ * Whack filter weights into place. Whatever texel had more weight is
+ * the one which should have been selected by nearest filtering hence
+ * just use 100% weight for it.
+ */
+ struct lp_build_context *c_bld = &bld->coord_bld;
+ LLVMValueRef w1_mask, w1_weight;
+ LLVMValueRef half = lp_build_const_vec(bld->gallivm, c_bld->type, 0.5f);
+
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, s_fpart, half);
+ /* this select is really just a "and" */
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ s_fpart = lp_build_select(c_bld, linear_mask, s_fpart, w1_weight);
+ if (dims >= 2) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, t_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ t_fpart = lp_build_select(c_bld, linear_mask, t_fpart, w1_weight);
+ if (dims == 3) {
+ w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, r_fpart, half);
+ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero);
+ r_fpart = lp_build_select(c_bld, linear_mask, r_fpart, w1_weight);
+ }
+ }
+ }
/*
* Get texture colors.
*/
/* get x0/x1 texels */
- lp_build_sample_texel_soa(bld, sampler_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, mipoffsets, neighbors[0][0]);
- lp_build_sample_texel_soa(bld, sampler_unit,
+ 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, 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],
- 0);
+ 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, sampler_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, mipoffsets, neighbors[1][0]);
- lp_build_sample_texel_soa(bld, sampler_unit,
+ 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, 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],
- 0);
+ /*
+ * 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 c00, c01, c10, c11, c00f, c01f, c10f, c11f;
+ LLVMValueRef have_corner, one_third;
+
+ colorss[0] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs0");
+ colorss[1] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs1");
+ colorss[2] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs2");
+ colorss[3] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs3");
+
+ have_corner = LLVMBuildLoad(builder, have_corners, "");
+
+ lp_build_if(&corner_if, bld->gallivm, have_corner);
+
+ one_third = lp_build_const_vec(bld->gallivm, coord_bld->type,
+ 1.0f/3.0f);
+
+ /* find corner */
+ c00 = lp_build_and(ivec_bld, fall_off[0], fall_off[2]);
+ c00f = LLVMBuildBitCast(builder, c00, coord_bld->vec_type, "");
+ c01 = lp_build_and(ivec_bld, fall_off[1], fall_off[2]);
+ c01f = LLVMBuildBitCast(builder, c01, coord_bld->vec_type, "");
+ c10 = lp_build_and(ivec_bld, fall_off[0], fall_off[3]);
+ c10f = LLVMBuildBitCast(builder, c10, coord_bld->vec_type, "");
+ c11 = lp_build_and(ivec_bld, fall_off[1], fall_off[3]);
+ c11f = LLVMBuildBitCast(builder, c11, coord_bld->vec_type, "");
+
+ if (!is_gather) {
+ /*
+ * 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.)
+ */
+ LLVMValueRef w00, w01, w10, w11, wx0, wy0, c_weight, tmp;
+ 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 */
+ c_weight = lp_build_select(coord_bld, c00, w00, coord_bld->zero);
+ c_weight = lp_build_select(coord_bld, c01, w01, c_weight);
+ c_weight = lp_build_select(coord_bld, c10, w10, c_weight);
+ c_weight = lp_build_select(coord_bld, c11, w11, c_weight);
+
+ /*
+ * add 1/3 of the corner weight to the weight of the 3 other
+ * samples and null out corner weight.
+ */
+ c_weight = lp_build_mul(coord_bld, c_weight, one_third);
+ w00 = lp_build_add(coord_bld, w00, c_weight);
+ w00 = lp_build_andnot(coord_bld, w00, c00f);
+ w01 = lp_build_add(coord_bld, w01, c_weight);
+ w01 = lp_build_andnot(coord_bld, w01, c01f);
+ w10 = lp_build_add(coord_bld, w10, c_weight);
+ w10 = lp_build_andnot(coord_bld, w10, c10f);
+ w11 = lp_build_add(coord_bld, w11, c_weight);
+ w11 = lp_build_andnot(coord_bld, w11, c11f);
+
+ 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];
+ }
+ }
+ else {
+ /*
+ * We don't have any weights to adjust, so instead calculate
+ * the fourth texel as simply the average of the other 3.
+ * (This would work for non-gather too, however we'd have
+ * a boatload more of the select stuff due to there being
+ * 4 times as many colors as weights.)
+ */
+ LLVMValueRef col00, col01, col10, col11;
+ LLVMValueRef colc, colc0, colc1;
+ col10 = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[1][0], chan_swiz);
+ col11 = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[1][1], chan_swiz);
+ col01 = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[0][1], chan_swiz);
+ col00 = lp_build_swizzle_soa_channel(texel_bld,
+ neighbors[0][0], chan_swiz);
+
+ /*
+ * The spec says for comparison filtering, the comparison
+ * must happen before synthesizing the new value.
+ * This means all gathered values are always 0 or 1,
+ * except for the non-existing texel, which can be 0,1/3,2/3,1...
+ * Seems like we'd be allowed to just return 0 or 1 too, so we
+ * could simplify and pass down the compare mask values to the
+ * end (using int arithmetic/compare on the mask values to
+ * construct the fourth texel) and only there convert to floats
+ * but it's probably not worth it (it might be easier for the cpu
+ * but not for the code)...
+ */
+ if (bld->static_sampler_state->compare_mode !=
+ PIPE_TEX_COMPARE_NONE) {
+ LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11;
+ cmpval00 = lp_build_sample_comparefunc(bld, coords[4], col00);
+ cmpval01 = lp_build_sample_comparefunc(bld, coords[4], col01);
+ cmpval10 = lp_build_sample_comparefunc(bld, coords[4], col10);
+ cmpval11 = lp_build_sample_comparefunc(bld, coords[4], col11);
+ col00 = lp_build_select(texel_bld, cmpval00,
+ texel_bld->one, texel_bld->zero);
+ col01 = lp_build_select(texel_bld, cmpval01,
+ texel_bld->one, texel_bld->zero);
+ col10 = lp_build_select(texel_bld, cmpval10,
+ texel_bld->one, texel_bld->zero);
+ col11 = lp_build_select(texel_bld, cmpval11,
+ texel_bld->one, texel_bld->zero);
+ }
+
+ /*
+ * Null out corner color.
+ */
+ col00 = lp_build_andnot(coord_bld, col00, c00f);
+ col01 = lp_build_andnot(coord_bld, col01, c01f);
+ col10 = lp_build_andnot(coord_bld, col10, c10f);
+ col11 = lp_build_andnot(coord_bld, col11, c11f);
+
+ /*
+ * New corner texel color is all colors added / 3.
+ */
+ colc0 = lp_build_add(coord_bld, col00, col01);
+ colc1 = lp_build_add(coord_bld, col10, col11);
+ colc = lp_build_add(coord_bld, colc0, colc1);
+ colc = lp_build_mul(coord_bld, one_third, colc);
+
+ /*
+ * Replace the corner texel color with the new value.
+ */
+ col00 = lp_build_select(coord_bld, c00, colc, col00);
+ col01 = lp_build_select(coord_bld, c01, colc, col01);
+ col10 = lp_build_select(coord_bld, c10, colc, col10);
+ col11 = lp_build_select(coord_bld, c11, colc, col11);
+
+ colors0[0] = col10;
+ colors0[1] = col11;
+ colors0[2] = col01;
+ colors0[3] = col00;
+ }
+
+ 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.
+ */
+ 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... */
+ 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 {
+ 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, sampler_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, mipoffsets, neighbors1[0][0]);
- lp_build_sample_texel_soa(bld, sampler_unit,
+ 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, mipoffsets, neighbors1[0][1]);
- lp_build_sample_texel_soa(bld, sampler_unit,
+ 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, mipoffsets, neighbors1[1][0]);
- lp_build_sample_texel_soa(bld, sampler_unit,
+ 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, mipoffsets, 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],
- 0);
+ 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],
- 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]);
+ 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 {
}
}
}
+ if (is_gather) {
+ /*
+ * For gather, we can't do our usual channel swizzling done later,
+ * so do it here. It only really matters for 0/1 swizzles in case
+ * of comparison filtering, since in this case the results would be
+ * wrong, without comparison it should all work out alright but it
+ * can't hurt to do that here, since it will instantly drop all
+ * calculations above, though it's a rather stupid idea to do
+ * gather on a channel which will always return 0 or 1 in any case...
+ */
+ if (chan_swiz == PIPE_SWIZZLE_1) {
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = texel_bld->one;
+ }
+ } else if (chan_swiz == PIPE_SWIZZLE_0) {
+ for (chan = 0; chan < 4; chan++) {
+ colors_out[chan] = texel_bld->zero;
+ }
+ }
+ }
}
/**
* 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 sampler_unit,
unsigned img_filter,
unsigned mip_filter,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ boolean is_gather,
+ const LLVMValueRef *coords,
const LLVMValueRef *offsets,
LLVMValueRef ilevel0,
LLVMValueRef ilevel1,
lp_build_mipmap_level_sizes(bld, ilevel0,
&size0,
&row_stride0_vec, &img_stride0_vec);
- if (bld->num_lods == 1) {
+ if (bld->num_mips == 1) {
data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
}
else {
mipoff0 = lp_build_get_mip_offsets(bld, ilevel0);
}
if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld, sampler_unit,
- size0,
+ lp_build_sample_image_nearest(bld, size0,
row_stride0_vec, img_stride0_vec,
- data_ptr0, mipoff0, s, t, r, offsets,
+ data_ptr0, mipoff0, coords, offsets,
colors0);
}
else {
assert(img_filter == PIPE_TEX_FILTER_LINEAR);
- lp_build_sample_image_linear(bld, sampler_unit,
- size0,
+ lp_build_sample_image_linear(bld, is_gather, size0, NULL,
row_stride0_vec, img_stride0_vec,
- data_ptr0, mipoff0, s, t, r, offsets,
+ data_ptr0, mipoff0, coords, offsets,
colors0);
}
/* need_lerp = lod_fpart > 0 */
if (bld->num_lods == 1) {
need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT,
- lod_fpart, bld->levelf_bld.zero,
+ lod_fpart, bld->lodf_bld.zero,
"need_lerp");
}
else {
* We'll do mip filtering if any of the quads (or individual
* pixel in case of per-pixel lod) need it.
* It might be better to split the vectors here and only fetch/filter
- * quads which need it.
- */
- /*
- * 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.
+ * quads which need it (if there's one lod per quad).
*/
- lod_fpart = lp_build_max(&bld->levelf_bld, lod_fpart,
- bld->levelf_bld.zero);
- need_lerp = lp_build_compare(bld->gallivm, bld->levelf_bld.type,
+ need_lerp = lp_build_compare(bld->gallivm, bld->lodf_bld.type,
PIPE_FUNC_GREATER,
- lod_fpart, bld->levelf_bld.zero);
- need_lerp = lp_build_any_true_range(&bld->leveli_bld, bld->num_lods, need_lerp);
+ lod_fpart, bld->lodf_bld.zero);
+ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, need_lerp);
+ lp_build_name(need_lerp, "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->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_lods == 1) {
+ if (bld->num_mips == 1) {
data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
}
else {
mipoff1 = lp_build_get_mip_offsets(bld, ilevel1);
}
if (img_filter == PIPE_TEX_FILTER_NEAREST) {
- lp_build_sample_image_nearest(bld, sampler_unit,
- size1,
+ lp_build_sample_image_nearest(bld, size1,
row_stride1_vec, img_stride1_vec,
- data_ptr1, mipoff1, s, t, r, offsets,
+ data_ptr1, mipoff1, coords, offsets,
colors1);
}
else {
- lp_build_sample_image_linear(bld, sampler_unit,
- size1,
+ lp_build_sample_image_linear(bld, FALSE, size1, NULL,
row_stride1_vec, img_stride1_vec,
- data_ptr1, mipoff1, s, t, r, offsets,
+ data_ptr1, mipoff1, coords, offsets,
colors1);
}
if (bld->num_lods != bld->coord_type.length)
lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
- bld->levelf_bld.type,
+ bld->lodf_bld.type,
bld->texel_bld.type,
lod_fpart);
/**
- * Build (per-coord) layer value.
- * Either clamp layer to valid values or fill in optional out_of_bounds
- * value and just return value unclamped.
+ * 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 LLVMValueRef
-lp_build_layer_coord(struct lp_build_sample_context *bld,
- unsigned texture_unit,
- LLVMValueRef layer,
- LLVMValueRef *out_of_bounds)
+static void
+lp_build_sample_mipmap_both(struct lp_build_sample_context *bld,
+ LLVMValueRef linear_mask,
+ unsigned mip_filter,
+ const LLVMValueRef *coords,
+ const LLVMValueRef *offsets,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef lod_fpart,
+ LLVMValueRef lod_positive,
+ LLVMValueRef *colors_out)
{
- LLVMValueRef num_layers;
+ 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;
+
+ /* 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);
+ }
+
+ lp_build_sample_image_linear(bld, FALSE, size0, linear_mask,
+ row_stride0_vec, img_stride0_vec,
+ data_ptr0, mipoff0, coords, offsets,
+ colors0);
+
+ /* Store the first level's colors in the output variables */
+ for (chan = 0; chan < 4; chan++) {
+ LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
+ }
+
+ 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_name(need_lerp, "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->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, texture_unit);
+ num_layers = bld->dynamic_state->depth(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit, NULL);
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);
}
else {
LLVMValueRef maxlayer;
- maxlayer = lp_build_sub(&bld->int_bld, num_layers, bld->int_bld.one);
+ 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);
}
*/
static void
lp_build_sample_common(struct lp_build_sample_context *bld,
+ boolean is_lodq,
unsigned texture_index,
unsigned sampler_index,
- LLVMValueRef *s,
- LLVMValueRef *t,
- LLVMValueRef *r,
+ LLVMValueRef *coords,
const struct lp_derivatives *derivs, /* optional */
LLVMValueRef lod_bias, /* optional */
LLVMValueRef explicit_lod, /* optional */
- LLVMValueRef *lod_ipart,
+ LLVMValueRef *lod_pos_or_zero,
+ LLVMValueRef *lod,
LLVMValueRef *lod_fpart,
LLVMValueRef *ilevel0,
LLVMValueRef *ilevel1)
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__,
* 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) {
- LLVMValueRef face, face_s, face_t;
+ 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, *s, *t, *r, derivs, &face, &face_s, &face_t,
- &cube_rho, need_derivs);
- *s = face_s; /* vec */
- *t = face_t; /* vec */
- /* use 'r' to indicate cube face */
- *r = face; /* vec */
+ 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) {
- *r = lp_build_iround(&bld->coord_bld, *t);
- *r = lp_build_layer_coord(bld, texture_index, *r, NULL);
+ 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);
}
- else if (target == PIPE_TEXTURE_2D_ARRAY) {
- *r = lp_build_iround(&bld->coord_bld, *r);
- *r = lp_build_layer_coord(bld, texture_index, *r, 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] <= PIPE_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) {
+ mip_filter != PIPE_TEX_MIPFILTER_NONE || is_lodq) {
/* Need to compute lod either to choose mipmap levels or to
* distinguish between minification/magnification with one mipmap level.
*/
- lp_build_lod_selector(bld, texture_index, sampler_index,
- *s, *t, *r, cube_rho,
+ lp_build_lod_selector(bld, is_lodq, texture_index, sampler_index,
+ coords[0], coords[1], coords[2], cube_rho,
derivs, lod_bias, explicit_lod,
- mip_filter,
- lod_ipart, lod_fpart);
+ mip_filter, lod,
+ &lod_ipart, lod_fpart, lod_pos_or_zero);
+ if (is_lodq) {
+ LLVMValueRef last_level;
+ last_level = bld->dynamic_state->last_level(bld->dynamic_state,
+ bld->gallivm,
+ bld->context_ptr,
+ texture_index, NULL);
+ first_level = bld->dynamic_state->first_level(bld->dynamic_state,
+ bld->gallivm,
+ bld->context_ptr,
+ texture_index, NULL);
+ last_level = lp_build_sub(&bld->int_bld, last_level, first_level);
+ last_level = lp_build_int_to_float(&bld->float_bld, last_level);
+ last_level = lp_build_broadcast_scalar(&bld->lodf_bld, last_level);
+
+ switch (mip_filter) {
+ case PIPE_TEX_MIPFILTER_NONE:
+ *lod_fpart = bld->lodf_bld.zero;
+ break;
+ case PIPE_TEX_MIPFILTER_NEAREST:
+ *lod_fpart = lp_build_round(&bld->lodf_bld, *lod_fpart);
+ /* fallthrough */
+ case PIPE_TEX_MIPFILTER_LINEAR:
+ *lod_fpart = lp_build_clamp(&bld->lodf_bld, *lod_fpart,
+ bld->lodf_bld.zero, last_level);
+ break;
+ }
+ return;
+ }
+
} else {
- *lod_ipart = bld->leveli_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 (HAVE_LLVM == 0x0207 && target == PIPE_TEXTURE_CUBE) {
- /* XXX this is a work-around for an apparent bug in LLVM 2.7.
- * We should be able to set ilevel0 = const(0) but that causes
- * bad x86 code to be emitted.
- */
- assert(*lod_ipart);
- lp_build_nearest_mip_level(bld, texture_index, *lod_ipart, ilevel0, NULL);
- }
- else {
- first_level = bld->dynamic_state->first_level(bld->dynamic_state,
- bld->gallivm, texture_index);
- first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level);
- *ilevel0 = first_level;
- }
+ first_level = bld->dynamic_state->first_level(bld->dynamic_state,
+ bld->gallivm, bld->context_ptr,
+ texture_index, NULL);
+ first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level);
+ *ilevel0 = first_level;
break;
case PIPE_TEX_MIPFILTER_NEAREST:
- assert(*lod_ipart);
- lp_build_nearest_mip_level(bld, texture_index, *lod_ipart, ilevel0, NULL);
+ 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, texture_index,
- *lod_ipart, lod_fpart,
+ 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 <= PIPE_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 ||
+ format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
+ 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:
+ case PIPE_FORMAT_BPTC_RGBA_UNORM:
+ case PIPE_FORMAT_BPTC_SRGBA:
+ 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;
+ case PIPE_FORMAT_BPTC_RGB_FLOAT:
+ /* not sure if we should clamp to max half float? */
+ break;
+ case PIPE_FORMAT_BPTC_RGB_UFLOAT:
+ min_clamp = vec4_bld.zero;
+ 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 sampler_unit,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
+ boolean is_gather,
+ const LLVMValueRef *coords,
const LLVMValueRef *offsets,
- LLVMValueRef lod_ipart,
+ 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_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 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.
*/
if (min_filter == mag_filter) {
/* no need to distinguish between minification and magnification */
- lp_build_sample_mipmap(bld, sampler_unit,
- min_filter, mip_filter,
- s, t, r, offsets,
+ 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.
- */
- struct lp_build_if_state if_ctx;
- LLVMValueRef minify;
-
/*
- * XXX this should to all lods into account, if some are min
- * some max probably could hack up the coords/weights in the linear
- * path with selects to work for nearest.
- * If that's just two quads sitting next to each other it seems
- * quite ok to do the same filtering method on both though, at
- * least unless we have explicit lod (and who uses different
- * min/mag filter with that?)
+ * 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.
*/
- if (bld->num_lods > 1)
- lod_ipart = LLVMBuildExtractElement(builder, lod_ipart,
- lp_build_const_int32(bld->gallivm, 0), "");
+ 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;
+
+ lod_positive = LLVMBuildTrunc(builder, lod_positive,
+ LLVMInt1TypeInContext(bld->gallivm->context),
+ "lod_pos");
+
+ 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;
- /* minify = lod >= 0.0 */
- minify = LLVMBuildICmp(builder, LLVMIntSGE,
- lod_ipart, int_bld->zero, "");
+ if (min_filter == PIPE_TEX_FILTER_LINEAR) {
+ linear_mask = lod_positive;
+ mip_filter_for_nearest = PIPE_TEX_MIPFILTER_NONE;
+ }
+ else {
+ linear_mask = lp_build_not(&bld->lodi_bld, lod_positive);
+ mip_filter_for_nearest = mip_filter;
+ }
+ need_linear = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods,
+ linear_mask);
+ lp_build_name(need_linear, "need_linear");
+
+ 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, minify);
- {
- /* Use the minification filter */
- lp_build_sample_mipmap(bld, sampler_unit,
- min_filter, mip_filter,
- s, t, r, offsets,
- ilevel0, ilevel1, lod_fpart,
- texels);
- }
- lp_build_else(&if_ctx);
- {
- /* Use the magnification filter */
- lp_build_sample_mipmap(bld, sampler_unit,
- mag_filter, PIPE_TEX_MIPFILTER_NONE,
- s, t, r, offsets,
- ilevel0, NULL, NULL,
- texels);
+ lp_build_if(&if_ctx, bld->gallivm, need_linear);
+ {
+ /*
+ * Do sampling with both filters simultaneously. This means using
+ * a linear filter and doing some tricks (with weights) for the pixels
+ * which need nearest filter.
+ * Note that it's probably rare some pixels need nearest and some
+ * linear filter but the fixups required for the nearest pixels
+ * aren't all that complicated so just always run a combined path
+ * if at least some pixels require linear.
+ */
+ lp_build_sample_mipmap_both(bld, linear_mask, mip_filter,
+ coords, offsets,
+ ilevel0, ilevel1,
+ lod_fpart, lod_positive,
+ texels);
+ }
+ lp_build_else(&if_ctx);
+ {
+ /*
+ * All pixels require just nearest filtering, which is way
+ * cheaper than linear, hence do a separate path for that.
+ */
+ lp_build_sample_mipmap(bld, PIPE_TEX_FILTER_NEAREST,
+ mip_filter_for_nearest, FALSE,
+ coords, offsets,
+ ilevel0, ilevel1, lod_fpart,
+ texels);
+ }
+ lp_build_endif(&if_ctx);
}
- lp_build_endif(&if_ctx);
}
for (chan = 0; chan < 4; ++chan) {
static void
lp_build_fetch_texel(struct lp_build_sample_context *bld,
unsigned texture_unit,
+ LLVMValueRef ms_index,
const LLVMValueRef *coords,
LLVMValueRef explicit_lod,
const LLVMValueRef *offsets,
LLVMValueRef *colors_out)
{
- struct lp_build_context *perquadi_bld = &bld->leveli_bld;
+ 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;
out_of_bounds = int_coord_bld->zero;
if (explicit_lod && bld->static_texture_state->target != PIPE_BUFFER) {
- if (bld->num_lods != int_coord_bld->type.length) {
+ 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);
}
out_of_bound_ret_zero ? &out_of_bounds : NULL);
}
else {
- assert(bld->num_lods == 1);
+ assert(bld->num_mips == 1);
if (bld->static_texture_state->target != PIPE_BUFFER) {
- ilevel = bld->dynamic_state->first_level(bld->dynamic_state,
- bld->gallivm, texture_unit);
+ ilevel = bld->dynamic_state->first_level(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit, NULL);
}
else {
ilevel = lp_build_const_int32(bld->gallivm, 0);
if (target == PIPE_TEXTURE_1D_ARRAY ||
target == PIPE_TEXTURE_2D_ARRAY) {
- if (target == PIPE_TEXTURE_1D_ARRAY) {
- z = y;
- }
if (out_of_bound_ret_zero) {
- z = lp_build_layer_coord(bld, texture_unit, z, &out1);
+ 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, z, NULL);
+ z = lp_build_layer_coord(bld, texture_unit, FALSE, z, NULL);
}
}
lp_build_get_mip_offsets(bld, ilevel));
}
+ if (bld->fetch_ms) {
+ LLVMValueRef num_samples;
+ num_samples = bld->dynamic_state->num_samples(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit, NULL);
+ out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, ms_index, 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, ms_index, lp_build_broadcast_scalar(int_coord_bld, num_samples));
+ out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1);
+ offset = lp_build_add(int_coord_bld, offset,
+ lp_build_mul(int_coord_bld, bld->sample_stride, ms_index));
+ }
+
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->texel_type, TRUE,
bld->base_ptr, offset,
i, j,
+ bld->cache,
colors_out);
if (out_of_bound_ret_zero) {
}
-/**
- * Do shadow test/comparison.
- * \param coords incoming texcoords
- * \param texel the texel to compare against (use the X channel)
- * Ideally this should really be done per-sample.
- */
-static void
-lp_build_sample_compare(struct lp_build_sample_context *bld,
- const LLVMValueRef *coords,
- LLVMValueRef texel[4])
-{
- struct lp_build_context *texel_bld = &bld->texel_bld;
- LLVMBuilderRef builder = bld->gallivm->builder;
- LLVMValueRef res, p;
- const unsigned chan = 0;
- unsigned chan_type;
- const struct util_format_description *format_desc;
-
- if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE)
- return;
-
- if (bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY ||
- bld->static_texture_state->target == PIPE_TEXTURE_CUBE) {
- p = coords[3];
- }
- else {
- p = coords[2];
- }
-
- /* 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);
- }
-
- /* Clamp p coords to [0,1] for fixed function depth texture format */
- format_desc = util_format_description(bld->static_texture_state->format);
- /* 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) {
- p = lp_build_clamp(&bld->coord_bld, p,
- bld->coord_bld.zero, bld->coord_bld.one);
- }
-
- /*
- * 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.
- */
- /* result = (p FUNC texel) ? 1 : 0 */
- res = lp_build_cmp(texel_bld, bld->static_sampler_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;
-}
-
-
/**
* Just set texels to white instead of actually sampling the texture.
* For debugging.
/**
- * 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 is_fetch if this is a texel fetch instruction.
+ * \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_static_texture_state *static_texture_state,
- const struct lp_static_sampler_state *static_sampler_state,
- struct lp_sampler_dynamic_state *dynamic_state,
- struct lp_type type,
- boolean is_fetch,
- unsigned texture_index,
- unsigned sampler_index,
- const LLVMValueRef *coords,
- const LLVMValueRef *offsets,
- const struct lp_derivatives *derivs, /* optional */
- LLVMValueRef lod_bias, /* optional */
- LLVMValueRef explicit_lod, /* optional */
- boolean scalar_lod,
- 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 ms_index, /* optional */
+ LLVMValueRef texel_out[4])
{
- unsigned dims = texture_dims(static_texture_state->target);
+ unsigned target = static_texture_state->target;
+ unsigned dims = texture_dims(target);
unsigned num_quads = type.length / 4;
- unsigned mip_filter;
+ 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;
- 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, op_is_lodq, op_is_gather, fetch_ms;
if (0) {
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;
+ fetch_ms = !!(sample_key & LP_SAMPLER_FETCH_MS);
+
+ op_is_tex = op_type == LP_SAMPLER_OP_TEXTURE;
+ op_is_lodq = op_type == LP_SAMPLER_OP_LODQ;
+ op_is_gather = op_type == LP_SAMPLER_OP_GATHER;
+
+ 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.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_texture_state->format);
bld.dims = dims;
+ if (gallivm_perf & GALLIVM_PERF_NO_QUAD_LOD || op_is_lodq) {
+ bld.no_quad_lod = TRUE;
+ }
+ if (gallivm_perf & GALLIVM_PERF_NO_RHO_APPROX || op_is_lodq) {
+ bld.no_rho_approx = TRUE;
+ }
+ if (gallivm_perf & GALLIVM_PERF_NO_BRILINEAR || op_is_lodq) {
+ bld.no_brilinear = TRUE;
+ }
+
bld.vector_width = lp_type_width(type);
bld.float_type = lp_type_float(32);
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);
+ bld.texel_type = lp_type_uint_vec(type.width, type.width * type.length);
}
- if (!static_texture_state->level_zero_only) {
+ if (!static_texture_state->level_zero_only ||
+ !static_sampler_state->max_lod_pos || op_is_lodq) {
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_is_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.
* There are other situations where at least the multiple int lods could be
* avoided like min and max lod being equal.
*/
- if (explicit_lod && !scalar_lod &&
- ((is_fetch && bld.static_texture_state->target != PIPE_BUFFER) ||
- (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)))
- bld.num_lods = type.length;
+ bld.num_mips = bld.num_lods = 1;
+
+ if (bld.no_quad_lod && bld.no_rho_approx &&
+ ((mip_filter != PIPE_TEX_MIPFILTER_NONE && op_is_tex &&
+ (static_texture_state->target == PIPE_TEXTURE_CUBE ||
+ static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY)) ||
+ op_is_lodq)) {
+ /*
+ * 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).
+ * For lodq, we do it to simply avoid scalar pack / unpack (albeit for
+ * cube maps we do indeed get per-pixel lod values).
+ */
+ 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 ((is_fetch && explicit_lod && bld.static_texture_state->target != PIPE_BUFFER ) ||
- (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) {
+ 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 {
- bld.num_lods = 1;
+ else if (op_is_tex && min_img_filter != mag_img_filter) {
+ bld.num_mips = 1;
+ bld.num_lods = num_quads;
}
- bld.levelf_type = type;
+ bld.fetch_ms = fetch_ms;
+ if (op_is_gather)
+ bld.gather_comp = (sample_key & LP_SAMPLER_GATHER_COMP_MASK) >> LP_SAMPLER_GATHER_COMP_SHIFT;
+ bld.lodf_type = type;
/* we want native vector size to be able to use our intrinsics */
if (bld.num_lods != type.length) {
- bld.levelf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1;
+ /* 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_lods > 1) {
- bld.float_size_type.length = bld.num_lods == type.length ?
- bld.num_lods * bld.float_size_in_type.length :
+ 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.texel_bld, gallivm, bld.texel_type);
lp_build_context_init(&bld.levelf_bld, gallivm, bld.levelf_type);
lp_build_context_init(&bld.leveli_bld, gallivm, bld.leveli_type);
+ lp_build_context_init(&bld.lodf_bld, gallivm, bld.lodf_type);
+ lp_build_context_init(&bld.lodi_bld, gallivm, bld.lodi_type);
/* Get the dynamic state */
- tex_width = dynamic_state->width(dynamic_state, gallivm, texture_index);
- bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm, texture_index);
- bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm, texture_index);
- bld.base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm, texture_index);
- bld.mip_offsets = dynamic_state->mip_offsets(dynamic_state, gallivm, texture_index);
+ tex_width = dynamic_state->width(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
+ bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
+ bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
+ bld.base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
+ bld.mip_offsets = dynamic_state->mip_offsets(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
+
+ if (fetch_ms)
+ bld.sample_stride = lp_build_broadcast_scalar(&bld.int_coord_bld, dynamic_state->sample_stride(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL));
/* Note that mip_offsets is an array[level] of offsets to texture images */
- s = coords[0];
- t = coords[1];
- r = coords[2];
+ 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) {
}
else {
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef,
- tex_width, LLVMConstInt(i32t, 0, 0), "");
+ tex_width,
+ LLVMConstInt(i32t, 0, 0), "");
if (dims >= 2) {
LLVMValueRef tex_height =
- dynamic_state->height(dynamic_state, gallivm, texture_index);
+ dynamic_state->height(dynamic_state, gallivm,
+ context_ptr, texture_index, NULL);
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, texture_index);
+ dynamic_state->depth(dynamic_state, gallivm, context_ptr,
+ texture_index, NULL);
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 (util_format_is_pure_integer(static_texture_state->format) &&
+ !util_format_has_depth(bld.format_desc) && op_is_tex &&
+ (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 gallium frontends which set this up regardless (we'd crash in the
+ * lerp later otherwise).
+ * At least in some apis it may be legal to use such filters with lod
+ * queries and/or gather (at least for gather d3d10 says only the wrap
+ * bits are really used hence filter bits are likely simply ignored).
+ * For fetch, we don't get valid samplers either way here.
+ */
+ unsigned chan;
+ LLVMValueRef zero = lp_build_zero(gallivm, type);
+ for (chan = 0; chan < 4; chan++) {
+ texel_out[chan] = zero;
+ }
+ return;
+ }
+
if (0) {
/* For debug: no-op texture sampling */
lp_build_sample_nop(gallivm,
bld.texel_type,
- coords,
+ newcoords,
texel_out);
}
- else if (is_fetch) {
- lp_build_fetch_texel(&bld, texture_index, coords,
- explicit_lod, offsets,
+ else if (op_type == LP_SAMPLER_OP_FETCH) {
+ lp_build_fetch_texel(&bld, texture_index, ms_index, newcoords,
+ lod, offsets,
texel_out);
}
else {
- LLVMValueRef lod_ipart = NULL, lod_fpart = NULL;
- LLVMValueRef ilevel0 = NULL, ilevel1 = NULL;
- boolean use_aos = util_format_fits_8unorm(bld.format_desc) &&
- lp_is_simple_wrap_mode(static_sampler_state->wrap_s) &&
- lp_is_simple_wrap_mode(static_sampler_state->wrap_t);
+ LLVMValueRef lod_fpart = NULL, lod_positive = NULL;
+ LLVMValueRef ilevel0 = NULL, ilevel1 = NULL, lod = NULL;
+ boolean use_aos;
+
+ 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(gallivm_perf & GALLIVM_PERF_NO_AOS_SAMPLING) {
+ use_aos = 0;
+ }
+
+ 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_sampler_state->min_img_filter,
- static_sampler_state->mag_img_filter,
- static_sampler_state->min_mip_filter,
- static_sampler_state->wrap_s,
- static_sampler_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, texture_index, sampler_index,
- &s, &t, &r,
+ lp_build_sample_common(&bld, op_is_lodq, texture_index, sampler_index,
+ newcoords,
derivs, lod_bias, explicit_lod,
- &lod_ipart, &lod_fpart,
+ &lod_positive, &lod, &lod_fpart,
&ilevel0, &ilevel1);
+ if (op_is_lodq) {
+ texel_out[0] = lod_fpart;
+ texel_out[1] = lod;
+ texel_out[2] = texel_out[3] = bld.coord_bld.zero;
+ return;
+ }
+
+ 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 (but it should work).
- * (It should be faster if we'd support avx2)
+ * we only try 8-wide sampling with soa or if we have AVX2
+ * as it appears to be a loss with just AVX)
*/
- if (num_quads == 1 || !use_aos) {
-
- if (num_quads > 1) {
- if (mip_filter == PIPE_TEX_MIPFILTER_NONE) {
- LLVMValueRef index0 = lp_build_const_int32(gallivm, 0);
- /*
- * These parameters are the same for all quads,
- * could probably simplify.
- */
- lod_ipart = LLVMBuildExtractElement(builder, lod_ipart, index0, "");
- ilevel0 = LLVMBuildExtractElement(builder, ilevel0, index0, "");
- }
- }
+ if (num_quads == 1 || !use_aos ||
+ (util_cpu_caps.has_avx2 &&
+ (bld.num_lods == 1 ||
+ derived_sampler_state.min_img_filter == derived_sampler_state.mag_img_filter))) {
if (use_aos) {
/* do sampling/filtering with fixed pt arithmetic */
lp_build_sample_aos(&bld, sampler_index,
- s, t, r, offsets,
- lod_ipart, lod_fpart,
+ newcoords[0], newcoords[1],
+ newcoords[2],
+ offsets, lod_positive, lod_fpart,
ilevel0, ilevel1,
texel_out);
}
else {
lp_build_sample_general(&bld, sampler_index,
- s, t, r, offsets,
- lod_ipart, lod_fpart,
+ op_type == LP_SAMPLER_OP_GATHER,
+ newcoords, offsets,
+ lod_positive, lod_fpart,
ilevel0, ilevel1,
texel_out);
}
/* Setup our build context */
memset(&bld4, 0, sizeof bld4);
+ bld4.no_quad_lod = bld.no_quad_lod;
+ bld4.no_rho_approx = bld.no_rho_approx;
+ bld4.no_brilinear = bld.no_brilinear;
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.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.int_size_in_type = lp_int_type(bld4.float_size_in_type);
bld4.texel_type = bld.texel_type;
bld4.texel_type.length = 4;
- bld4.levelf_type = type4;
- /* we want native vector size to be able to use our intrinsics */
- bld4.levelf_type.length = 1;
- bld4.leveli_type = lp_int_type(bld4.levelf_type);
- if (explicit_lod && !scalar_lod &&
- ((is_fetch && bld.static_texture_state->target != PIPE_BUFFER) ||
- (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)))
+ bld4.num_mips = bld4.num_lods = 1;
+ if (bld4.no_quad_lod && bld4.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;
- else
- bld4.num_lods = 1;
+ }
+ 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;
+ }
+ else if (op_is_tex && min_img_filter != mag_img_filter) {
+ bld4.num_mips = 1;
+ bld4.num_lods = type4.length;
+ }
+ }
- bld4.levelf_type = type4;
/* 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_lods > 1) {
- bld4.float_size_type.length = bld4.num_lods == type4.length ?
- bld4.num_lods * bld4.float_size_in_type.length :
+ 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.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_ipart4, lod_fpart4 = NULL;
+ 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, s, 4*i, 4);
- t4 = lp_build_extract_range(gallivm, t, 4*i, 4);
- r4 = lp_build_extract_range(gallivm, r, 4*i, 4);
+ 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);
}
}
}
- lod_ipart4 = lp_build_extract_range(gallivm, lod_ipart, num_lods * i, num_lods);
- ilevel04 = lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods);
+ lod_positive4 = lp_build_extract_range(gallivm, lod_positive, num_lods * i, num_lods);
+ ilevel04 = bld.num_mips == 1 ? ilevel0 :
+ lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods);
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
ilevel14 = lp_build_extract_range(gallivm, ilevel1, num_lods * i, num_lods);
lod_fpart4 = lp_build_extract_range(gallivm, lod_fpart, num_lods * i, num_lods);
/* do sampling/filtering with fixed pt arithmetic */
lp_build_sample_aos(&bld4, sampler_index,
s4, t4, r4, offsets4,
- lod_ipart4, lod_fpart4,
+ lod_positive4, lod_fpart4,
ilevel04, ilevel14,
texelout4);
}
else {
+ /* this path is currently unreachable and hence might break easily... */
+ LLVMValueRef newcoords4[5];
+ newcoords4[0] = s4;
+ newcoords4[1] = t4;
+ newcoords4[2] = r4;
+ newcoords4[3] = lp_build_extract_range(gallivm, newcoords[3], 4*i, 4);
+ newcoords4[4] = lp_build_extract_range(gallivm, newcoords[4], 4*i, 4);
+
lp_build_sample_general(&bld4, sampler_index,
- s4, t4, r4, offsets4,
- lod_ipart4, lod_fpart4,
+ op_type == LP_SAMPLER_OP_GATHER,
+ newcoords4, offsets4,
+ lod_positive4, lod_fpart4,
ilevel04, ilevel14,
texelout4);
}
texel_out[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads);
}
}
-
- lp_build_sample_compare(&bld, coords, texel_out);
}
- if (static_texture_state->target != PIPE_BUFFER) {
+ if (target != PIPE_BUFFER && op_type != LP_SAMPLER_OP_GATHER) {
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 ms_index = 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_FETCH_MS) {
+ ms_index = 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,
+ ms_index,
+ 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,
+ int texture_index, int sampler_index,
+ LLVMValueRef *tex_ret)
+{
+ LLVMBuilderRef builder = gallivm->builder;
+ LLVMModuleRef module = LLVMGetGlobalParent(LLVMGetBasicBlockParent(
+ LLVMGetInsertBlock(builder)));
+ LLVMValueRef function, inst;
+ LLVMValueRef args[LP_MAX_TEX_FUNC_ARGS];
+ LLVMBasicBlockRef bb;
+ unsigned num_args = 0;
+ char func_name[64];
+ unsigned i, num_coords, num_derivs, num_offsets, layer;
+ 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) {
+ 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.
+ */
+
+ 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_FETCH_MS) {
+ arg_types[num_param++] = LLVMTypeOf(params->ms_index);
+ }
+ 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) {
+
+ lp_add_function_attr(function, i + 1, LP_FUNC_ATTR_NOALIAS);
+ }
+ }
+
+ LLVMSetFunctionCallConv(function, LLVMFastCallConv);
+ LLVMSetLinkage(function, LLVMInternalLinkage);
+
+ 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_FETCH_MS) {
+ args[num_args++] = params->ms_index;
+ }
+ 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);
+
+}
+
+
+/**
+ * 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) {
+ LLVMValueRef tex_ret;
+ lp_build_sample_soa_func(gallivm,
+ static_texture_state,
+ static_sampler_state,
+ dynamic_state,
+ params, params->texture_index, params->sampler_index, &tex_ret);
+
+ for (unsigned i = 0; i < 4; i++) {
+ params->texel[i] = LLVMBuildExtractValue(gallivm->builder, tex_ret, i, "");
+ }
+ }
+ 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->ms_index,
+ params->texel);
+ }
+}
+
+
void
lp_build_size_query_soa(struct gallivm_state *gallivm,
const struct lp_static_texture_state *static_state,
struct lp_sampler_dynamic_state *dynamic_state,
- struct lp_type int_type,
- unsigned texture_unit,
- boolean need_nr_mips,
- boolean scalar_lod,
- LLVMValueRef explicit_lod,
- LLVMValueRef *sizes_out)
+ const struct lp_sampler_size_query_params *params)
{
- LLVMValueRef lod;
- LLVMValueRef size;
+ LLVMValueRef lod, level = 0, size;
LLVMValueRef first_level = NULL;
int dims, i;
boolean has_array;
- struct lp_build_context bld_int_vec;
+ unsigned num_lods = 1;
+ struct lp_build_context bld_int_vec4;
+ LLVMValueRef context_ptr = params->context_ptr;
+ unsigned texture_unit = params->texture_unit;
+ unsigned target = params->target;
+ LLVMValueRef texture_unit_offset = params->texture_unit_offset;
+
+ 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, params->int_type, 0.0F);
+ for (chan = 0; chan < 4; chan++) {
+ params->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(static_state->target);
+ dims = texture_dims(target);
- switch (static_state->target) {
+ switch (target) {
case PIPE_TEXTURE_1D_ARRAY:
case PIPE_TEXTURE_2D_ARRAY:
+ case PIPE_TEXTURE_CUBE_ARRAY:
has_array = TRUE;
break;
default:
break;
}
- assert(!int_type.floating);
+ assert(!params->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) {
+ if (params->samples_only) {
+ params->sizes_out[0] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, params->int_type),
+ dynamic_state->num_samples(dynamic_state, gallivm,
+ context_ptr, texture_unit,
+ texture_unit_offset));
+ return;
+ }
+ if (params->explicit_lod) {
/* FIXME: this needs to honor per-element lod */
- lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod, lp_build_const_int32(gallivm, 0), "");
- first_level = dynamic_state->first_level(dynamic_state, gallivm, texture_unit);
- lod = lp_build_broadcast_scalar(&bld_int_vec,
- LLVMBuildAdd(gallivm->builder, lod, first_level, "lod"));
-
+ lod = LLVMBuildExtractElement(gallivm->builder, params->explicit_lod,
+ lp_build_const_int32(gallivm, 0), "");
+ first_level = dynamic_state->first_level(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset);
+ 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;
}
- if (need_nr_mips) {
- size = bld_int_vec.zero;
- }
- else {
- size = bld_int_vec.undef;
- }
+ size = bld_int_vec4.undef;
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->width(dynamic_state, gallivm, texture_unit),
+ dynamic_state->width(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset),
lp_build_const_int32(gallivm, 0), "");
if (dims >= 2) {
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->height(dynamic_state, gallivm, texture_unit),
+ dynamic_state->height(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset),
lp_build_const_int32(gallivm, 1), "");
}
if (dims >= 3) {
size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->depth(dynamic_state, gallivm, texture_unit),
+ dynamic_state->depth(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset),
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)
- size = LLVMBuildInsertElement(gallivm->builder, size,
- dynamic_state->depth(dynamic_state, gallivm, texture_unit),
+ if (has_array) {
+ LLVMValueRef layers = dynamic_state->depth(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset);
+ 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), "");
+ }
/*
- * XXX for out-of-bounds lod, should set size to zero vector here
- * (for dx10-style only, i.e. need_nr_mips)
+ * 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 (params->explicit_lod && params->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, texture_unit_offset);
+
+ 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_vec.type, int_type,
+ params->sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec4.type, params->int_type,
size,
lp_build_const_int32(gallivm, i));
}
+ if (params->is_sviewinfo) {
+ for (; i < 4; i++) {
+ params->sizes_out[i] = lp_build_const_vec(gallivm, params->int_type, 0.0);
+ }
+ }
/*
* if there's no explicit_lod (buffers, rects) queries requiring nr of
* mips would be illegal.
*/
- if (need_nr_mips && explicit_lod) {
+ if (params->is_sviewinfo && params->explicit_lod) {
struct lp_build_context bld_int_scalar;
LLVMValueRef num_levels;
lp_build_context_init(&bld_int_scalar, gallivm, lp_type_int(32));
else {
LLVMValueRef last_level;
- last_level = dynamic_state->last_level(dynamic_state, gallivm, texture_unit);
+ last_level = dynamic_state->last_level(dynamic_state, gallivm,
+ context_ptr, texture_unit, texture_unit_offset);
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),
+ params->sizes_out[3] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, params->int_type),
num_levels);
}
}
+
+static void
+lp_build_do_atomic_soa(struct gallivm_state *gallivm,
+ const struct util_format_description *format_desc,
+ struct lp_type type,
+ LLVMValueRef exec_mask,
+ LLVMValueRef base_ptr,
+ LLVMValueRef offset,
+ LLVMValueRef out_of_bounds,
+ unsigned img_op,
+ LLVMAtomicRMWBinOp op,
+ const LLVMValueRef rgba_in[4],
+ const LLVMValueRef rgba2_in[4],
+ LLVMValueRef atomic_result[4])
+{
+ enum pipe_format format = format_desc->format;
+
+ if (format != PIPE_FORMAT_R32_UINT && format != PIPE_FORMAT_R32_SINT && format != PIPE_FORMAT_R32_FLOAT) {
+ atomic_result[0] = lp_build_zero(gallivm, type);
+ return;
+ }
+
+ LLVMValueRef atom_res = lp_build_alloca(gallivm,
+ LLVMVectorType(LLVMInt32TypeInContext(gallivm->context), type.length), "");
+
+ offset = LLVMBuildGEP(gallivm->builder, base_ptr, &offset, 1, "");
+ struct lp_build_loop_state loop_state;
+ lp_build_loop_begin(&loop_state, gallivm, lp_build_const_int32(gallivm, 0));
+ struct lp_build_if_state ifthen;
+ LLVMValueRef cond;
+ LLVMValueRef packed = rgba_in[0], packed2 = rgba2_in[0];
+
+ LLVMValueRef should_store_mask = LLVMBuildAnd(gallivm->builder, exec_mask, LLVMBuildNot(gallivm->builder, out_of_bounds, ""), "store_mask");
+ assert(exec_mask);
+
+ cond = LLVMBuildICmp(gallivm->builder, LLVMIntNE, should_store_mask, lp_build_const_int_vec(gallivm, type, 0), "");
+ cond = LLVMBuildExtractElement(gallivm->builder, cond, loop_state.counter, "");
+ lp_build_if(&ifthen, gallivm, cond);
+
+ LLVMValueRef data = LLVMBuildExtractElement(gallivm->builder, packed, loop_state.counter, "");
+ LLVMValueRef cast_base_ptr = LLVMBuildExtractElement(gallivm->builder, offset, loop_state.counter, "");
+ cast_base_ptr = LLVMBuildBitCast(gallivm->builder, cast_base_ptr, LLVMPointerType(LLVMInt32TypeInContext(gallivm->context), 0), "");
+ data = LLVMBuildBitCast(gallivm->builder, data, LLVMInt32TypeInContext(gallivm->context), "");
+
+ if (img_op == LP_IMG_ATOMIC_CAS) {
+ LLVMValueRef cas_src_ptr = LLVMBuildExtractElement(gallivm->builder, packed2, loop_state.counter, "");
+ LLVMValueRef cas_src = LLVMBuildBitCast(gallivm->builder, cas_src_ptr, LLVMInt32TypeInContext(gallivm->context), "");
+ data = LLVMBuildAtomicCmpXchg(gallivm->builder, cast_base_ptr, data,
+ cas_src,
+ LLVMAtomicOrderingSequentiallyConsistent,
+ LLVMAtomicOrderingSequentiallyConsistent,
+ false);
+ data = LLVMBuildExtractValue(gallivm->builder, data, 0, "");
+ } else {
+ data = LLVMBuildAtomicRMW(gallivm->builder, op,
+ cast_base_ptr, data,
+ LLVMAtomicOrderingSequentiallyConsistent,
+ false);
+ }
+
+ LLVMValueRef temp_res = LLVMBuildLoad(gallivm->builder, atom_res, "");
+ temp_res = LLVMBuildInsertElement(gallivm->builder, temp_res, data, loop_state.counter, "");
+ LLVMBuildStore(gallivm->builder, temp_res, atom_res);
+
+ lp_build_endif(&ifthen);
+ lp_build_loop_end_cond(&loop_state, lp_build_const_int32(gallivm, type.length),
+ NULL, LLVMIntUGE);
+ atomic_result[0] = LLVMBuildLoad(gallivm->builder, atom_res, "");
+}
+
+static void
+lp_build_img_op_no_format(struct gallivm_state *gallivm,
+ const struct lp_img_params *params,
+ LLVMValueRef outdata[4])
+{
+ /*
+ * If there's nothing bound, format is NONE, and we must return
+ * all zero as mandated by d3d10 in this case.
+ */
+ if (params->img_op != LP_IMG_STORE) {
+ LLVMValueRef zero = lp_build_zero(gallivm, params->type);
+ for (unsigned chan = 0; chan < (params->img_op == LP_IMG_LOAD ? 4 : 1); chan++) {
+ outdata[chan] = zero;
+ }
+ }
+}
+
+void
+lp_build_img_op_soa(const struct lp_static_texture_state *static_texture_state,
+ struct lp_sampler_dynamic_state *dynamic_state,
+ struct gallivm_state *gallivm,
+ const struct lp_img_params *params,
+ LLVMValueRef outdata[4])
+{
+ unsigned target = params->target;
+ unsigned dims = texture_dims(target);
+ /** regular scalar int type */
+ struct lp_type int_type, int_coord_type;
+ struct lp_build_context int_bld, int_coord_bld;
+ const struct util_format_description *format_desc = util_format_description(static_texture_state->format);
+ LLVMValueRef x = params->coords[0], y = params->coords[1], z = params->coords[2];
+ LLVMValueRef ms_index = params->ms_index;
+ LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL;
+ int_type = lp_type_int(32);
+ int_coord_type = lp_int_type(params->type);
+ lp_build_context_init(&int_bld, gallivm, int_type);
+ lp_build_context_init(&int_coord_bld, gallivm, int_coord_type);
+
+ if (static_texture_state->format == PIPE_FORMAT_NONE) {
+ lp_build_img_op_no_format(gallivm, params, outdata);
+ return;
+ }
+ LLVMValueRef offset, i, j;
+
+ LLVMValueRef row_stride = dynamic_state->row_stride(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef img_stride = dynamic_state->img_stride(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef width = dynamic_state->width(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef height = dynamic_state->height(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef depth = dynamic_state->depth(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ LLVMValueRef num_samples = NULL, sample_stride = NULL;
+ if (ms_index) {
+ num_samples = dynamic_state->num_samples(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ sample_stride = dynamic_state->sample_stride(dynamic_state, gallivm,
+ params->context_ptr, params->image_index, NULL);
+ }
+
+ boolean layer_coord = has_layer_coord(target);
+
+ width = lp_build_broadcast_scalar(&int_coord_bld, width);
+ if (dims >= 2) {
+ height = lp_build_broadcast_scalar(&int_coord_bld, height);
+ row_stride_vec = lp_build_broadcast_scalar(&int_coord_bld, row_stride);
+ }
+ if (dims >= 3 || layer_coord) {
+ depth = lp_build_broadcast_scalar(&int_coord_bld, depth);
+ img_stride_vec = lp_build_broadcast_scalar(&int_coord_bld, img_stride);
+ }
+
+ LLVMValueRef out_of_bounds = int_coord_bld.zero;
+ LLVMValueRef 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);
+
+ if (dims >= 2) {
+ 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) {
+ 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);
+ }
+ lp_build_sample_offset(&int_coord_bld,
+ format_desc,
+ x, y, z, row_stride_vec, img_stride_vec,
+ &offset, &i, &j);
+
+ if (ms_index) {
+ out1 = lp_build_cmp(&int_coord_bld, PIPE_FUNC_GEQUAL, ms_index, lp_build_broadcast_scalar(&int_coord_bld, num_samples));
+ out_of_bounds = lp_build_or(&int_coord_bld, out_of_bounds, out1);
+
+ offset = lp_build_add(&int_coord_bld, offset,
+ lp_build_mul(&int_coord_bld, lp_build_broadcast_scalar(&int_coord_bld, sample_stride),
+ ms_index));
+ }
+ if (params->img_op == LP_IMG_LOAD) {
+ struct lp_type texel_type = params->type;
+ if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB &&
+ format_desc->channel[0].pure_integer) {
+ if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
+ texel_type = lp_type_int_vec(params->type.width, params->type.width * params->type.length);
+ } else if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) {
+ texel_type = lp_type_uint_vec(params->type.width, params->type.width * params->type.length);
+ }
+ }
+
+ offset = lp_build_andnot(&int_coord_bld, offset, out_of_bounds);
+ struct lp_build_context texel_bld;
+ lp_build_context_init(&texel_bld, gallivm, texel_type);
+ lp_build_fetch_rgba_soa(gallivm,
+ format_desc,
+ texel_type, TRUE,
+ base_ptr, offset,
+ i, j,
+ NULL,
+ outdata);
+
+ for (unsigned chan = 0; chan < 4; chan++) {
+ outdata[chan] = lp_build_select(&texel_bld, out_of_bounds,
+ texel_bld.zero, outdata[chan]);
+ }
+ } else if (params->img_op == LP_IMG_STORE) {
+ lp_build_store_rgba_soa(gallivm, format_desc, params->type, params->exec_mask, base_ptr, offset, out_of_bounds,
+ params->indata);
+ } else {
+ lp_build_do_atomic_soa(gallivm, format_desc, params->type, params->exec_mask, base_ptr, offset, out_of_bounds,
+ params->img_op, params->op, params->indata, params->indata2, outdata);
+ }
+}
+
+/*
+ * These functions are for indirect texture access suppoort.
+ *
+ * Indirect textures are implemented using a switch statement, that
+ * takes the texture index and jumps to the sampler functions for
+ * that texture unit.
+ */
+
+/*
+ * Initialise an indexed sampler switch block.
+ *
+ * This sets up the switch_info state and adds the LLVM flow control pieces.
+ */
+void
+lp_build_sample_array_init_soa(struct lp_build_sample_array_switch *switch_info,
+ struct gallivm_state *gallivm,
+ const struct lp_sampler_params *params,
+ LLVMValueRef idx,
+ unsigned base, unsigned range)
+{
+ switch_info->gallivm = gallivm;
+ switch_info->params = *params;
+ switch_info->base = base;
+ switch_info->range = range;
+
+ /* for generating the switch functions we don't want the texture index offset */
+ switch_info->params.texture_index_offset = 0;
+
+ LLVMBasicBlockRef initial_block = LLVMGetInsertBlock(gallivm->builder);
+ switch_info->merge_ref = lp_build_insert_new_block(gallivm, "texmerge");
+
+ switch_info->switch_ref = LLVMBuildSwitch(gallivm->builder, idx,
+ switch_info->merge_ref, range - base);
+
+ LLVMTypeRef val_type[4];
+ val_type[0] = val_type[1] = val_type[2] = val_type[3] =
+ lp_build_vec_type(gallivm, params->type);
+ LLVMTypeRef ret_type = LLVMStructTypeInContext(gallivm->context, val_type, 4, 0);
+
+ LLVMValueRef undef_val = LLVMGetUndef(ret_type);
+
+ LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref);
+
+ switch_info->phi = LLVMBuildPhi(gallivm->builder, ret_type, "");
+ LLVMAddIncoming(switch_info->phi, &undef_val, &initial_block, 1);
+}
+
+/*
+ * Add an individual entry to the indirect texture switch.
+ *
+ * This builds the sample function and links a case for it into the switch statement.
+ */
+void
+lp_build_sample_array_case_soa(struct lp_build_sample_array_switch *switch_info,
+ int idx,
+ const struct lp_static_texture_state *static_texture_state,
+ const struct lp_static_sampler_state *static_sampler_state,
+ struct lp_sampler_dynamic_state *dynamic_texture_state)
+{
+ struct gallivm_state *gallivm = switch_info->gallivm;
+ LLVMBasicBlockRef this_block = lp_build_insert_new_block(gallivm, "texblock");
+ LLVMValueRef tex_ret;
+
+ LLVMAddCase(switch_info->switch_ref, LLVMConstInt(LLVMInt32TypeInContext(gallivm->context), idx, 0), this_block);
+ LLVMPositionBuilderAtEnd(gallivm->builder, this_block);
+
+ lp_build_sample_soa_func(gallivm, static_texture_state,
+ static_sampler_state, dynamic_texture_state, &switch_info->params, idx, idx,
+ &tex_ret);
+
+ LLVMAddIncoming(switch_info->phi, &tex_ret, &this_block, 1);
+ LLVMBuildBr(gallivm->builder, switch_info->merge_ref);
+}
+
+/*
+ * Finish a switch statement.
+ *
+ * This handles extract the results from the switch.
+ */
+void lp_build_sample_array_fini_soa(struct lp_build_sample_array_switch *switch_info)
+{
+ struct gallivm_state *gallivm = switch_info->gallivm;
+
+ LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref);
+ for (unsigned i = 0; i < 4; i++)
+ switch_info->params.texel[i] = LLVMBuildExtractValue(gallivm->builder, switch_info->phi, i, "");
+}
projects / mesa.git / blobdiff