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shader: Implement ClipDistance
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67afdaf566
commit
0c4cf3b9eb
5 changed files with 36 additions and 0 deletions
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@ -176,6 +176,9 @@ void EmitContext::DefineCommonTypes(const Info& info) {
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AddCapability(spv::Capability::Float64);
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F64.Define(*this, TypeFloat(64), "f64");
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}
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if (info.stores_clip_distance) {
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Array8F32 = Name(TypeArray(F32[1], Constant(U32[1], 8)), "array_8_f32");
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}
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}
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void EmitContext::DefineCommonConstants() {
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@ -502,6 +505,12 @@ void EmitContext::DefineOutputs(const Info& info) {
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}
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output_point_size = DefineOutput(*this, F32[1], spv::BuiltIn::PointSize);
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}
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if (info.stores_clip_distance) {
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if (stage == Stage::Fragment) {
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throw NotImplementedException("Storing PointSize in Fragment stage");
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}
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clip_distances = DefineOutput(*this, Array8F32, spv::BuiltIn::ClipDistance);
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}
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for (size_t i = 0; i < info.stores_generics.size(); ++i) {
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if (info.stores_generics[i]) {
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output_generics[i] = DefineOutput(*this, F32[4]);
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@ -67,6 +67,8 @@ public:
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VectorTypes F16;
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VectorTypes F64;
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Id Array8F32{};
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Id true_value{};
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Id false_value{};
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Id u32_zero_value{};
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@ -105,6 +107,7 @@ public:
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Id base_vertex{};
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Id front_face{};
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Id point_coord{};
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Id clip_distances{};
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Id fswzadd_lut_a{};
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Id fswzadd_lut_b{};
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@ -44,6 +44,19 @@ Id OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
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case IR::Attribute::PositionZ:
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case IR::Attribute::PositionW:
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return ctx.OpAccessChain(ctx.output_f32, ctx.output_position, element_id());
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case IR::Attribute::ClipDistance0:
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case IR::Attribute::ClipDistance1:
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case IR::Attribute::ClipDistance2:
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case IR::Attribute::ClipDistance3:
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case IR::Attribute::ClipDistance4:
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case IR::Attribute::ClipDistance5:
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case IR::Attribute::ClipDistance6:
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case IR::Attribute::ClipDistance7: {
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const u32 base{static_cast<u32>(IR::Attribute::ClipDistance0)};
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const u32 index{static_cast<u32>(attr) - base};
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const Id clip_num{ctx.Constant(ctx.U32[1], index)};
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return ctx.OpAccessChain(ctx.output_f32, ctx.clip_distances, clip_num);
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}
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default:
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throw NotImplementedException("Read attribute {}", attr);
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}
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@ -71,6 +71,16 @@ void SetAttribute(Info& info, IR::Attribute attribute) {
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case IR::Attribute::PositionW:
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info.stores_position = true;
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break;
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case IR::Attribute::ClipDistance0:
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case IR::Attribute::ClipDistance1:
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case IR::Attribute::ClipDistance2:
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case IR::Attribute::ClipDistance3:
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case IR::Attribute::ClipDistance4:
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case IR::Attribute::ClipDistance5:
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case IR::Attribute::ClipDistance6:
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case IR::Attribute::ClipDistance7:
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info.stores_clip_distance = true;
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break;
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default:
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throw NotImplementedException("Set attribute {}", attribute);
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}
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@ -81,6 +81,7 @@ struct Info {
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std::array<bool, 32> stores_generics{};
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bool stores_position{};
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bool stores_point_size{};
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bool stores_clip_distance{};
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bool uses_fp16{};
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bool uses_fp64{};
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