shader: Add PointCoord attribute
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b7589fe115
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9d7422d967
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@ -425,6 +425,9 @@ void EmitContext::DefineInputs(const Info& info) {
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if (info.loads_front_face) {
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if (info.loads_front_face) {
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front_face = DefineInput(*this, U1, spv::BuiltIn::FrontFacing);
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front_face = DefineInput(*this, U1, spv::BuiltIn::FrontFacing);
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}
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}
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if (info.loads_point_coord) {
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point_coord = DefineInput(*this, F32[2], spv::BuiltIn::PointCoord);
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}
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for (size_t index = 0; index < info.input_generics.size(); ++index) {
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for (size_t index = 0; index < info.input_generics.size(); ++index) {
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const InputVarying generic{info.input_generics[index]};
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const InputVarying generic{info.input_generics[index]};
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if (!generic.used) {
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if (!generic.used) {
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@ -103,6 +103,8 @@ public:
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Id vertex_index{};
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Id vertex_index{};
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Id base_vertex{};
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Id base_vertex{};
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Id front_face{};
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Id front_face{};
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Id point_coord{};
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Id fswzadd_lut_a{};
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Id fswzadd_lut_a{};
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Id fswzadd_lut_b{};
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Id fswzadd_lut_b{};
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@ -179,6 +179,12 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr) {
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return ctx.OpSelect(ctx.U32[1], ctx.OpLoad(ctx.U1, ctx.front_face),
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return ctx.OpSelect(ctx.U32[1], ctx.OpLoad(ctx.U1, ctx.front_face),
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ctx.Constant(ctx.U32[1], std::numeric_limits<u32>::max()),
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ctx.Constant(ctx.U32[1], std::numeric_limits<u32>::max()),
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ctx.u32_zero_value);
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ctx.u32_zero_value);
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case IR::Attribute::PointSpriteS:
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return ctx.OpLoad(ctx.F32[1], ctx.OpAccessChain(ctx.input_f32, ctx.point_coord,
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ctx.Constant(ctx.U32[1], 0U)));
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case IR::Attribute::PointSpriteT:
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return ctx.OpLoad(ctx.F32[1], ctx.OpAccessChain(ctx.input_f32, ctx.point_coord,
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ctx.Constant(ctx.U32[1], 1U)));
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default:
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default:
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throw NotImplementedException("Read attribute {}", attr);
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throw NotImplementedException("Read attribute {}", attr);
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}
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}
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@ -47,6 +47,10 @@ void GetAttribute(Info& info, IR::Attribute attribute) {
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case IR::Attribute::FrontFace:
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case IR::Attribute::FrontFace:
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info.loads_front_face = true;
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info.loads_front_face = true;
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break;
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break;
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case IR::Attribute::PointSpriteS:
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case IR::Attribute::PointSpriteT:
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info.loads_point_coord = true;
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break;
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default:
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default:
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throw NotImplementedException("Get attribute {}", attribute);
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throw NotImplementedException("Get attribute {}", attribute);
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}
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}
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@ -74,6 +74,7 @@ struct Info {
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bool loads_instance_id{};
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bool loads_instance_id{};
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bool loads_vertex_id{};
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bool loads_vertex_id{};
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bool loads_front_face{};
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bool loads_front_face{};
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bool loads_point_coord{};
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std::array<bool, 8> stores_frag_color{};
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std::array<bool, 8> stores_frag_color{};
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bool stores_frag_depth{};
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bool stores_frag_depth{};
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