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nir: Add a new lowering option to lower all txd to txl.

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VC5 requires that all txd are lowered in the shader.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Eric Anholt
2017-11-21 16:21:36 -08:00
parent b08b628994
commit 0bead224fe
2 changed files with 14 additions and 6 deletions
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14
src/compiler/nir/nir_lower_tex.c
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@@ -524,10 +524,9 @@ lower_gradient_cube_map(nir_builder *b, nir_tex_instr *tex)
}
static void
lower_gradient_shadow(nir_builder *b, nir_tex_instr *tex)
lower_gradient(nir_builder *b, nir_tex_instr *tex)
{
assert(tex->sampler_dim != GLSL_SAMPLER_DIM_CUBE);
assert(tex->is_shadow);
assert(tex->op == nir_texop_txd);
assert(tex->dest.is_ssa);
@@ -809,16 +808,19 @@ nir_lower_tex_block(nir_block *block, nir_builder *b,
if (tex->op == nir_texop_txd &&
tex->sampler_dim == GLSL_SAMPLER_DIM_CUBE &&
(options->lower_txd_cube_map ||
(options->lower_txd ||
options->lower_txd_cube_map ||
(tex->is_shadow && options->lower_txd_shadow))) {
lower_gradient_cube_map(b, tex);
progress = true;
continue;
}
if (tex->op == nir_texop_txd && options->lower_txd_shadow &&
tex->is_shadow && tex->sampler_dim != GLSL_SAMPLER_DIM_CUBE) {
lower_gradient_shadow(b, tex);
if (tex->op == nir_texop_txd &&
(options->lower_txd ||
(options->lower_txd_shadow &&
tex->is_shadow && tex->sampler_dim != GLSL_SAMPLER_DIM_CUBE))) {
lower_gradient(b, tex);
progress = true;
continue;
}