GL_ARB_tessellation_shader DONE (i965/gen7+)
GL_ARB_texture_buffer_object_rgb32 DONE (freedreno, i965/gen6+, llvmpipe, softpipe, swr)
GL_ARB_texture_cube_map_array DONE (i965/gen6+, nv50, llvmpipe, softpipe)
- GL_ARB_texture_gather DONE (freedreno/a5xx, i965/gen6+, nv50, llvmpipe, softpipe, swr)
+ GL_ARB_texture_gather DONE (freedreno, i965/gen6+, nv50, llvmpipe, softpipe, swr)
GL_ARB_texture_query_lod DONE (freedreno, i965, nv50, llvmpipe, softpipe)
GL_ARB_transform_feedback2 DONE (i965/gen6+, nv50, llvmpipe, softpipe, swr)
GL_ARB_transform_feedback3 DONE (i965/gen7+, llvmpipe, softpipe, swr)
GL_ARB_texture_multisample (Multisample textures) DONE (i965/gen7+, nv50, r600, llvmpipe, softpipe)
GL_ARB_texture_storage_multisample DONE (all drivers that support GL_ARB_texture_multisample)
GL_ARB_vertex_attrib_binding DONE (all drivers)
- GS5 Enhanced textureGather DONE (i965/gen7+, r600)
+ GS5 Enhanced textureGather DONE (freedreno, i965/gen7+, r600)
GS5 Packing/bitfield/conversion functions DONE (i965/gen6+, r600)
GL_EXT_shader_integer_mix DONE (all drivers that support GLSL)
--- /dev/null
+/*
+ * Copyright © 2017 Ilia Mirkin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "ir3_nir.h"
+#include "compiler/nir/nir_builder.h"
+
+/* A4XX has a broken GATHER4 operation. It performs the texture swizzle on the
+ * gather results, rather than before. As a result, it must be emulated with
+ * direct texture calls.
+ */
+
+static bool
+lower_tg4(nir_block *block, nir_builder *b, void *mem_ctx)
+{
+ bool progress = false;
+
+ static const int offsets[3][2] = { {0, 1}, {1, 1}, {1, 0} };
+
+ nir_foreach_instr_safe(instr, block) {
+ if (instr->type != nir_instr_type_tex)
+ continue;
+
+ nir_tex_instr *tg4 = (nir_tex_instr *)instr;
+
+ if (tg4->op != nir_texop_tg4)
+ continue;
+
+ b->cursor = nir_before_instr(&tg4->instr);
+
+ nir_ssa_def *results[4];
+ int offset_index = nir_tex_instr_src_index(tg4, nir_tex_src_offset);
+ for (int i = 0; i < 4; i++) {
+ int num_srcs = tg4->num_srcs + 1 /* lod */;
+ if (offset_index < 0 && i < 3)
+ num_srcs++;
+
+ nir_tex_instr *tex = nir_tex_instr_create(b->shader, num_srcs);
+ tex->op = nir_texop_txl;
+ tex->sampler_dim = tg4->sampler_dim;
+ tex->coord_components = tg4->coord_components;
+ tex->is_array = tg4->is_array;
+ tex->is_shadow = tg4->is_shadow;
+ tex->is_new_style_shadow = tg4->is_new_style_shadow;
+ tex->texture_index = tg4->texture_index;
+ tex->texture = nir_deref_var_clone(tg4->texture, tex);
+ tex->sampler_index = tg4->sampler_index;
+ tex->sampler = nir_deref_var_clone(tg4->sampler, tex);
+ tex->dest_type = tg4->dest_type;
+
+ for (int j = 0; j < tg4->num_srcs; j++) {
+ nir_src_copy(&tex->src[j].src, &tg4->src[j].src, tex);
+ tex->src[j].src_type = tg4->src[j].src_type;
+ }
+ if (i != 3) {
+ nir_ssa_def *offset =
+ nir_vec2(b, nir_imm_int(b, offsets[i][0]),
+ nir_imm_int(b, offsets[i][1]));
+ if (offset_index < 0) {
+ tex->src[tg4->num_srcs].src = nir_src_for_ssa(offset);
+ tex->src[tg4->num_srcs].src_type = nir_tex_src_offset;
+ } else {
+ assert(nir_tex_instr_src_size(tex, offset_index) == 2);
+ nir_ssa_def *orig = nir_ssa_for_src(
+ b, tex->src[offset_index].src, 2);
+ tex->src[offset_index].src =
+ nir_src_for_ssa(nir_iadd(b, orig, offset));
+ }
+ }
+ tex->src[num_srcs - 1].src = nir_src_for_ssa(nir_imm_float(b, 0));
+ tex->src[num_srcs - 1].src_type = nir_tex_src_lod;
+
+ nir_ssa_dest_init(&tex->instr, &tex->dest,
+ nir_tex_instr_dest_size(tex), 32, NULL);
+ nir_builder_instr_insert(b, &tex->instr);
+
+ results[i] = nir_channel(b, &tex->dest.ssa, tg4->component);
+ }
+
+ nir_ssa_def *result = nir_vec4(b, results[0], results[1], results[2], results[3]);
+ nir_ssa_def_rewrite_uses(&tg4->dest.ssa, nir_src_for_ssa(result));
+
+ nir_instr_remove(&tg4->instr);
+
+ progress = true;
+ }
+
+ return progress;
+}
+
+static bool
+lower_tg4_func(nir_function_impl *impl)
+{
+ void *mem_ctx = ralloc_parent(impl);
+ nir_builder b;
+ nir_builder_init(&b, impl);
+
+ bool progress = false;
+ nir_foreach_block_safe(block, impl) {
+ progress |= lower_tg4(block, &b, mem_ctx);
+ }
+
+ if (progress)
+ nir_metadata_preserve(impl, nir_metadata_block_index |
+ nir_metadata_dominance);
+
+ return progress;
+}
+
+bool
+ir3_nir_lower_tg4_to_tex(nir_shader *shader)
+{
+ bool progress = false;
+
+ nir_foreach_function(function, shader) {
+ if (function->impl)
+ progress |= lower_tg4_func(function->impl);
+ }
+
+ return progress;
+}
projects / platform / upstream / mesa.git / commitdiff