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| author | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-12-24 20:00:28 -0500 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-12-29 19:03:49 -0500 |
| commit | 14ac0c2923c41df9c6fc4833d2a8e46a6efe5b59 (patch) | |
| tree | 6d9cb0ebd7d8d7b75d88a0d598c659b06d45004c /src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp | |
| parent | 640fc1418b08449f2ba729588aef5e06bc5df636 (diff) | |
shader: Add integer attribute get optimization pass
Works around an nvidia driver bug, where casting the integer attributes to float and back to an integer always returned 0.
Diffstat (limited to 'src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp')
| -rw-r--r-- | src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp index 6477bd192..5ef46d634 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp @@ -221,6 +221,22 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, } } +void EmitGetAttributeU32(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, std::string_view) { + switch (attr) { + case IR::Attribute::PrimitiveId: + ctx.AddU32("{}=uint(gl_PrimitiveID);", inst); + break; + case IR::Attribute::InstanceId: + ctx.AddU32("{}=uint(gl_InstanceID);", inst); + break; + case IR::Attribute::VertexId: + ctx.AddU32("{}=uint(gl_VertexID);", inst); + break; + default: + throw NotImplementedException("Get U32 attribute {}", attr); + } +} + void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view value, [[maybe_unused]] std::string_view vertex) { if (IR::IsGeneric(attr)) { |