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Merge pull request #9253 from vonchenplus/attr_layer

shader: Implement miss attribute layer
This commit is contained in:
liamwhite 2022-11-18 22:04:18 -05:00 committed by GitHub
commit 9c67334031
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5 changed files with 13 additions and 0 deletions

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@ -320,6 +320,7 @@ void SetupOptions(const IR::Program& program, const Profile& profile,
}
if (stage == Stage::Fragment) {
header += "OPTION ARB_draw_buffers;";
header += "OPTION ARB_fragment_layer_viewport;";
}
}

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@ -104,6 +104,9 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, Scal
case IR::Attribute::PrimitiveId:
ctx.Add("MOV.F {}.x,primitive.id;", inst);
break;
case IR::Attribute::Layer:
ctx.Add("MOV.F {}.x,fragment.layer;", inst);
break;
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:

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@ -205,6 +205,9 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
case IR::Attribute::PrimitiveId:
ctx.AddF32("{}=itof(gl_PrimitiveID);", inst);
break;
case IR::Attribute::Layer:
ctx.AddF32("{}=itof(gl_Layer);", inst);
break;
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:

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@ -315,6 +315,8 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr, Id vertex) {
switch (attr) {
case IR::Attribute::PrimitiveId:
return ctx.OpBitcast(ctx.F32[1], ctx.OpLoad(ctx.U32[1], ctx.primitive_id));
case IR::Attribute::Layer:
return ctx.OpBitcast(ctx.F32[1], ctx.OpLoad(ctx.U32[1], ctx.layer));
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:

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@ -1359,6 +1359,10 @@ void EmitContext::DefineInputs(const IR::Program& program) {
if (loads[IR::Attribute::PrimitiveId]) {
primitive_id = DefineInput(*this, U32[1], false, spv::BuiltIn::PrimitiveId);
}
if (loads[IR::Attribute::Layer]) {
AddCapability(spv::Capability::Geometry);
layer = DefineInput(*this, U32[1], false, spv::BuiltIn::Layer);
}
if (loads.AnyComponent(IR::Attribute::PositionX)) {
const bool is_fragment{stage != Stage::Fragment};
const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord};