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radv: Implement bc optimize.

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Seems like we actually enabled it already, but did not implement
the shader part. With this patch we do.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Bas Nieuwenhuizen 2017-08-15 18:09:21 +02:00
parent a7f5545ede
commit 6bafb56df6
3 changed files with 33 additions and 0 deletions
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29
src/amd/common/ac_nir_to_llvm.c
View file

@ -5009,10 +5009,39 @@ handle_vs_inputs(struct nir_to_llvm_context *ctx,
handle_vs_input_decl(ctx, variable);
}
static void
prepare_interp_optimize(struct nir_to_llvm_context *ctx,
struct nir_shader *nir)
{
if (!ctx->options->key.fs.multisample)
return;
bool uses_center = false;
bool uses_centroid = false;
nir_foreach_variable(variable, &nir->inputs) {
if (glsl_get_base_type(glsl_without_array(variable->type)) != GLSL_TYPE_FLOAT ||
variable->data.sample)
continue;
if (variable->data.centroid)
uses_centroid = true;
else
uses_center = true;
}
if (uses_center && uses_centroid) {
LLVMValueRef sel = LLVMBuildICmp(ctx->builder, LLVMIntSLT, ctx->prim_mask, ctx->ac.i32_0, "");
ctx->persp_centroid = LLVMBuildSelect(ctx->builder, sel, ctx->persp_center, ctx->persp_centroid, "");
ctx->linear_centroid = LLVMBuildSelect(ctx->builder, sel, ctx->linear_center, ctx->linear_centroid, "");
}
}
static void
handle_fs_inputs(struct nir_to_llvm_context *ctx,
struct nir_shader *nir)
{
prepare_interp_optimize(ctx, nir);
nir_foreach_variable(variable, &nir->inputs)
handle_fs_input_decl(ctx, variable);

1
src/amd/common/ac_nir_to_llvm.h
View file

@ -60,6 +60,7 @@ struct ac_fs_variant_key {
uint32_t col_format;
uint32_t is_int8;
uint32_t is_int10;
uint32_t multisample : 1;
};
union ac_shader_variant_key {

3
src/amd/vulkan/radv_pipeline.c
View file

@ -2069,6 +2069,9 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
if (modules[MESA_SHADER_FRAGMENT]) {
union ac_shader_variant_key key = {0};
key.fs.col_format = pipeline->graphics.blend.spi_shader_col_format;
if (pCreateInfo->pMultisampleState &&
pCreateInfo->pMultisampleState->rasterizationSamples > 1)
key.fs.multisample = true;
if (pipeline->device->physical_device->rad_info.chip_class < VI)
radv_pipeline_compute_get_int_clamp(pCreateInfo, &key.fs.is_int8, &key.fs.is_int10);