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shader: Add integer attribute get optimization pass

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Works around an nvidia driver bug, where casting the integer attributes to float and back to an integer always returned 0.
This commit is contained in:
ameerj 2021-12-24 20:00:28 -05:00
parent 640fc1418b
commit 14ac0c2923
9 changed files with 86 additions and 0 deletions
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16
src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
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@ -126,6 +126,22 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, Scal
}
}
void EmitGetAttributeU32(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32) {
switch (attr) {
case IR::Attribute::PrimitiveId:
ctx.Add("MOV.S {}.x,primitive.id;", inst);
break;
case IR::Attribute::InstanceId:
ctx.Add("MOV.S {}.x,{}.instance;", inst, ctx.attrib_name);
break;
case IR::Attribute::VertexId:
ctx.Add("MOV.S {}.x,{}.id;", inst, ctx.attrib_name);
break;
default:
throw NotImplementedException("Get U32 attribute {}", attr);
}
}
void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, ScalarF32 value,
[[maybe_unused]] ScalarU32 vertex) {
const u32 element{static_cast<u32>(attr) % 4};

1
src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
View file

@ -50,6 +50,7 @@ void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset);
void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset);
void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32 vertex);
void EmitGetAttributeU32(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32 vertex);
void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, ScalarF32 value, ScalarU32 vertex);
void EmitGetAttributeIndexed(EmitContext& ctx, IR::Inst& inst, ScalarS32 offset, ScalarU32 vertex);
void EmitSetAttributeIndexed(EmitContext& ctx, ScalarU32 offset, ScalarF32 value, ScalarU32 vertex);