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-rw-r--r--src/video_core/engines/shader_bytecode.h6
-rw-r--r--src/video_core/shader/shader_ir.cpp84
-rw-r--r--src/video_core/shader/shader_ir.h8
3 files changed, 64 insertions, 34 deletions
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h
index c9bc83cd7..4cd0c07a7 100644
--- a/src/video_core/engines/shader_bytecode.h
+++ b/src/video_core/engines/shader_bytecode.h
@@ -82,6 +82,10 @@ union Attribute {
Position = 7,
Attribute_0 = 8,
Attribute_31 = 39,
+ FrontColor = 40,
+ FrontSecondaryColor = 41,
+ BackColor = 42,
+ BackSecondaryColor = 43,
ClipDistances0123 = 44,
ClipDistances4567 = 45,
PointCoord = 46,
@@ -89,6 +93,8 @@ union Attribute {
// shader, and a tuple of (TessCoord.x, TessCoord.y, TessCoord.z, ~) when inside a Tess Eval
// shader.
TessCoordInstanceIDVertexID = 47,
+ TexCoord_0 = 48,
+ TexCoord_7 = 55,
// This attribute contains a tuple of (Unk, Unk, Unk, gl_FrontFacing) when inside a fragment
// shader. It is unknown what the other values contain.
FrontFacing = 63,
diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp
index 32bb28452..baf7188d2 100644
--- a/src/video_core/shader/shader_ir.cpp
+++ b/src/video_core/shader/shader_ir.cpp
@@ -96,6 +96,7 @@ Node ShaderIR::GetPredicate(bool immediate) {
}
Node ShaderIR::GetInputAttribute(Attribute::Index index, u64 element, Node buffer) {
+ MarkAttributeUsage(index, element);
used_input_attributes.emplace(index);
return MakeNode<AbufNode>(index, static_cast<u32>(element), std::move(buffer));
}
@@ -106,40 +107,7 @@ Node ShaderIR::GetPhysicalInputAttribute(Tegra::Shader::Register physical_addres
}
Node ShaderIR::GetOutputAttribute(Attribute::Index index, u64 element, Node buffer) {
- switch (index) {
- case Attribute::Index::LayerViewportPointSize:
- switch (element) {
- case 0:
- UNIMPLEMENTED();
- break;
- case 1:
- uses_layer = true;
- break;
- case 2:
- uses_viewport_index = true;
- break;
- case 3:
- uses_point_size = true;
- break;
- }
- break;
- case Attribute::Index::TessCoordInstanceIDVertexID:
- switch (element) {
- case 2:
- uses_instance_id = true;
- break;
- case 3:
- uses_vertex_id = true;
- break;
- }
- break;
- case Attribute::Index::ClipDistances0123:
- case Attribute::Index::ClipDistances4567: {
- const u64 clip_index = (index == Attribute::Index::ClipDistances4567 ? 4 : 0) + element;
- used_clip_distances.at(clip_index) = true;
- break;
- }
- }
+ MarkAttributeUsage(index, element);
used_output_attributes.insert(index);
return MakeNode<AbufNode>(index, static_cast<u32>(element), std::move(buffer));
}
@@ -451,6 +419,54 @@ Node ShaderIR::BitfieldInsert(Node base, Node insert, u32 offset, u32 bits) {
Immediate(bits));
}
+void ShaderIR::MarkAttributeUsage(Attribute::Index index, u64 element) {
+ switch (index) {
+ case Attribute::Index::LayerViewportPointSize:
+ switch (element) {
+ case 0:
+ UNIMPLEMENTED();
+ break;
+ case 1:
+ uses_layer = true;
+ break;
+ case 2:
+ uses_viewport_index = true;
+ break;
+ case 3:
+ uses_point_size = true;
+ break;
+ }
+ break;
+ case Attribute::Index::TessCoordInstanceIDVertexID:
+ switch (element) {
+ case 2:
+ uses_instance_id = true;
+ break;
+ case 3:
+ uses_vertex_id = true;
+ break;
+ }
+ break;
+ case Attribute::Index::ClipDistances0123:
+ case Attribute::Index::ClipDistances4567: {
+ const u64 clip_index = (index == Attribute::Index::ClipDistances4567 ? 4 : 0) + element;
+ used_clip_distances.at(clip_index) = true;
+ break;
+ }
+ case Attribute::Index::FrontColor:
+ case Attribute::Index::FrontSecondaryColor:
+ case Attribute::Index::BackColor:
+ case Attribute::Index::BackSecondaryColor:
+ uses_legacy_varyings = true;
+ break;
+ default:
+ if (index >= Attribute::Index::TexCoord_0 && index <= Attribute::Index::TexCoord_7) {
+ uses_legacy_varyings = true;
+ }
+ break;
+ }
+}
+
std::size_t ShaderIR::DeclareAmend(Node new_amend) {
const std::size_t id = amend_code.size();
amend_code.push_back(new_amend);
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index dde036b40..80fc9b82c 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -137,6 +137,10 @@ public:
return uses_vertex_id;
}
+ bool UsesLegacyVaryings() const {
+ return uses_legacy_varyings;
+ }
+
bool UsesWarps() const {
return uses_warps;
}
@@ -343,6 +347,9 @@ private:
/// Inserts a sequence of bits from a node
Node BitfieldInsert(Node base, Node insert, u32 offset, u32 bits);
+ /// Marks the usage of a input or output attribute.
+ void MarkAttributeUsage(Tegra::Shader::Attribute::Index index, u64 element);
+
void WriteTexInstructionFloat(NodeBlock& bb, Tegra::Shader::Instruction instr,
const Node4& components);
@@ -443,6 +450,7 @@ private:
bool uses_physical_attributes{}; // Shader uses AL2P or physical attribute read/writes
bool uses_instance_id{};
bool uses_vertex_id{};
+ bool uses_legacy_varyings{};
bool uses_warps{};
bool uses_indexed_samplers{};