diff options
| 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 | |
| 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')
| -rw-r--r-- | src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp | 16 | ||||
| -rw-r--r-- | src/shader_recompiler/backend/glsl/emit_glsl_instructions.h | 2 |
2 files changed, 18 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 6477bd1928..5ef46d6343 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)) { diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_instructions.h b/src/shader_recompiler/backend/glsl/emit_glsl_instructions.h index f86502e4c8..6cabbc717d 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_instructions.h +++ b/src/shader_recompiler/backend/glsl/emit_glsl_instructions.h @@ -60,6 +60,8 @@ void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding const IR::Value& offset); void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, std::string_view vertex); +void EmitGetAttributeU32(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, + std::string_view vertex); void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view value, std::string_view vertex); void EmitGetAttributeIndexed(EmitContext& ctx, IR::Inst& inst, std::string_view offset, |