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radv,aco: lower barycentric_at_sample in NIR

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fossils-db (NAVI21):
Totals from 158 (0.12% of 134913) affected shaders:
CodeSize: 569456 -> 568824 (-0.11%)

Only Control seems affected.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18615>
This commit is contained in:
Samuel Pitoiset
2022-09-15 14:58:51 +02:00
committed by Marge Bot
parent 9f0b4da875
commit 704ef1fd3b
5 changed files with 24 additions and 149 deletions
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43
src/amd/vulkan/radv_nir_to_llvm.c
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@@ -190,47 +190,6 @@ create_function(struct radv_shader_context *ctx, gl_shader_stage stage, bool has
}
}
static uint32_t
radv_get_sample_pos_offset(uint32_t num_samples)
{
uint32_t sample_pos_offset = 0;
switch (num_samples) {
case 2:
sample_pos_offset = 1;
break;
case 4:
sample_pos_offset = 3;
break;
case 8:
sample_pos_offset = 7;
break;
default:
break;
}
return sample_pos_offset;
}
static LLVMValueRef
load_sample_position(struct ac_shader_abi *abi, LLVMValueRef sample_id)
{
struct radv_shader_context *ctx = radv_shader_context_from_abi(abi);
LLVMValueRef result;
LLVMValueRef index = LLVMConstInt(ctx->ac.i32, RING_PS_SAMPLE_POSITIONS, false);
LLVMValueRef ptr = LLVMBuildGEP(ctx->ac.builder, ctx->ring_offsets, &index, 1, "");
ptr = LLVMBuildBitCast(ctx->ac.builder, ptr, ac_array_in_const_addr_space(ctx->ac.v2f32), "");
uint32_t sample_pos_offset = radv_get_sample_pos_offset(ctx->options->key.ps.num_samples);
sample_id = LLVMBuildAdd(ctx->ac.builder, sample_id,
LLVMConstInt(ctx->ac.i32, sample_pos_offset, false), "");
result = ac_build_load_invariant(&ctx->ac, ptr, sample_id);
return result;
}
static void
visit_emit_vertex_with_counter(struct ac_shader_abi *abi, unsigned stream, LLVMValueRef vertexidx,
LLVMValueRef *addrs)
@@ -1444,8 +1403,6 @@ ac_translate_nir_to_llvm(struct ac_llvm_compiler *ac_llvm,
} else if (shaders[shader_idx]->info.stage == MESA_SHADER_TESS_EVAL) {
} else if (shaders[shader_idx]->info.stage == MESA_SHADER_VERTEX) {
ctx.abi.load_inputs = radv_load_vs_inputs;
} else if (shaders[shader_idx]->info.stage == MESA_SHADER_FRAGMENT) {
ctx.abi.load_sample_position = load_sample_position;
}
if (shader_idx && !(shaders[shader_idx]->info.stage == MESA_SHADER_GEOMETRY && info->is_ngg)) {