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shader/shader_ir: Track usage in input attribute and of legacy varyings
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@ -82,6 +82,10 @@ union Attribute {
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Position = 7,
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Attribute_0 = 8,
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Attribute_31 = 39,
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FrontColor = 40,
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FrontSecondaryColor = 41,
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BackColor = 42,
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BackSecondaryColor = 43,
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ClipDistances0123 = 44,
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ClipDistances4567 = 45,
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PointCoord = 46,
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@ -89,6 +93,8 @@ union Attribute {
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// shader, and a tuple of (TessCoord.x, TessCoord.y, TessCoord.z, ~) when inside a Tess Eval
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// shader.
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TessCoordInstanceIDVertexID = 47,
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TexCoord_0 = 48,
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TexCoord_7 = 55,
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// This attribute contains a tuple of (Unk, Unk, Unk, gl_FrontFacing) when inside a fragment
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// shader. It is unknown what the other values contain.
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FrontFacing = 63,
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@ -96,6 +96,7 @@ Node ShaderIR::GetPredicate(bool immediate) {
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}
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Node ShaderIR::GetInputAttribute(Attribute::Index index, u64 element, Node buffer) {
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MarkAttributeUsage(index, element);
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used_input_attributes.emplace(index);
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return MakeNode<AbufNode>(index, static_cast<u32>(element), std::move(buffer));
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}
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@ -106,40 +107,7 @@ Node ShaderIR::GetPhysicalInputAttribute(Tegra::Shader::Register physical_addres
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}
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Node ShaderIR::GetOutputAttribute(Attribute::Index index, u64 element, Node buffer) {
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switch (index) {
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case Attribute::Index::LayerViewportPointSize:
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switch (element) {
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case 0:
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UNIMPLEMENTED();
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break;
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case 1:
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uses_layer = true;
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break;
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case 2:
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uses_viewport_index = true;
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break;
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case 3:
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uses_point_size = true;
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break;
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}
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break;
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case Attribute::Index::TessCoordInstanceIDVertexID:
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switch (element) {
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case 2:
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uses_instance_id = true;
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break;
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case 3:
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uses_vertex_id = true;
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break;
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}
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break;
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case Attribute::Index::ClipDistances0123:
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case Attribute::Index::ClipDistances4567: {
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const u64 clip_index = (index == Attribute::Index::ClipDistances4567 ? 4 : 0) + element;
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used_clip_distances.at(clip_index) = true;
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break;
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}
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}
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MarkAttributeUsage(index, element);
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used_output_attributes.insert(index);
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return MakeNode<AbufNode>(index, static_cast<u32>(element), std::move(buffer));
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}
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@ -451,6 +419,54 @@ Node ShaderIR::BitfieldInsert(Node base, Node insert, u32 offset, u32 bits) {
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Immediate(bits));
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}
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void ShaderIR::MarkAttributeUsage(Attribute::Index index, u64 element) {
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switch (index) {
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case Attribute::Index::LayerViewportPointSize:
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switch (element) {
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case 0:
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UNIMPLEMENTED();
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break;
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case 1:
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uses_layer = true;
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break;
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case 2:
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uses_viewport_index = true;
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break;
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case 3:
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uses_point_size = true;
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break;
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}
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break;
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case Attribute::Index::TessCoordInstanceIDVertexID:
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switch (element) {
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case 2:
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uses_instance_id = true;
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break;
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case 3:
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uses_vertex_id = true;
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break;
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}
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break;
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case Attribute::Index::ClipDistances0123:
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case Attribute::Index::ClipDistances4567: {
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const u64 clip_index = (index == Attribute::Index::ClipDistances4567 ? 4 : 0) + element;
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used_clip_distances.at(clip_index) = true;
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break;
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}
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case Attribute::Index::FrontColor:
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case Attribute::Index::FrontSecondaryColor:
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case Attribute::Index::BackColor:
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case Attribute::Index::BackSecondaryColor:
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uses_legacy_varyings = true;
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break;
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default:
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if (index >= Attribute::Index::TexCoord_0 && index <= Attribute::Index::TexCoord_7) {
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uses_legacy_varyings = true;
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}
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break;
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}
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}
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std::size_t ShaderIR::DeclareAmend(Node new_amend) {
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const std::size_t id = amend_code.size();
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amend_code.push_back(new_amend);
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@ -137,6 +137,10 @@ public:
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return uses_vertex_id;
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}
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bool UsesLegacyVaryings() const {
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return uses_legacy_varyings;
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}
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bool UsesWarps() const {
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return uses_warps;
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}
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@ -343,6 +347,9 @@ private:
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/// Inserts a sequence of bits from a node
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Node BitfieldInsert(Node base, Node insert, u32 offset, u32 bits);
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/// Marks the usage of a input or output attribute.
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void MarkAttributeUsage(Tegra::Shader::Attribute::Index index, u64 element);
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void WriteTexInstructionFloat(NodeBlock& bb, Tegra::Shader::Instruction instr,
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const Node4& components);
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@ -443,6 +450,7 @@ private:
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bool uses_physical_attributes{}; // Shader uses AL2P or physical attribute read/writes
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bool uses_instance_id{};
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bool uses_vertex_id{};
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bool uses_legacy_varyings{};
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bool uses_warps{};
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bool uses_indexed_samplers{};
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