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emit_glasm: Add support for reading position attributes

This commit is contained in:
ReinUsesLisp 2021-05-15 20:33:57 -03:00 committed by ameerj
parent f7a2340205
commit 3c06293e20

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@ -51,14 +51,24 @@ void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding
void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
[[maybe_unused]] ScalarU32 vertex) {
const u32 element{static_cast<u32>(attr) % 4};
const char swizzle{"xyzw"[element]};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
const u32 element{IR::GenericAttributeElement(attr)};
ctx.Add("MOV.F {}.x,in_attr{}[0].{};", inst, index, "xyzw"[element]);
ctx.Add("MOV.F {}.x,in_attr{}[0].{};", inst, index, swizzle);
return;
}
switch (attr) {
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
case IR::Attribute::PositionW:
ctx.Add("MOV.F {}.x,{}.position.{};", inst, ctx.stage_name, swizzle);
break;
default:
throw NotImplementedException("Get attribute {}", attr);
}
}
void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, ScalarF32 value,
[[maybe_unused]] ScalarU32 vertex) {