shader: Initial OpenGL implementation

3 files changed, 12 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index b3c9fe72a..5913fdeff 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -355,6 +355,10 @@ U32 IREmitter::WorkgroupIdZ() {
     return U32{CompositeExtract(Inst(Opcode::WorkgroupId), 2)};
 }
 
+Value IREmitter::LocalInvocationId() {
+    return Inst(Opcode::LocalInvocationId);
+}
+
 U32 IREmitter::LocalInvocationIdX() {
     return U32{CompositeExtract(Inst(Opcode::LocalInvocationId), 0)};
 }
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index 4441c495d..a12919283 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -95,6 +95,7 @@ public:
     [[nodiscard]] U32 WorkgroupIdY();
     [[nodiscard]] U32 WorkgroupIdZ();
 
+    [[nodiscard]] Value LocalInvocationId();
     [[nodiscard]] U32 LocalInvocationIdX();
     [[nodiscard]] U32 LocalInvocationIdY();
     [[nodiscard]] U32 LocalInvocationIdZ();
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
index b0baff74b..01fb6f5e5 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
@@ -120,6 +120,13 @@ enum class SpecialRegister : u64 {
     case SpecialRegister::SR_INVOCATION_INFO:
         // LOG_WARNING(..., "SR_INVOCATION_INFO is stubbed");
         return ir.Imm32(0x00ff'0000);
+    case SpecialRegister::SR_TID: {
+        const IR::Value tid{ir.LocalInvocationId()};
+        return ir.BitFieldInsert(ir.BitFieldInsert(IR::U32{ir.CompositeExtract(tid, 0)},
+                                                   IR::U32{ir.CompositeExtract(tid, 1)},
+                                                   ir.Imm32(16), ir.Imm32(8)),
+                                 IR::U32{ir.CompositeExtract(tid, 2)}, ir.Imm32(26), ir.Imm32(6));
+    }
     case SpecialRegister::SR_TID_X:
         return ir.LocalInvocationIdX();
     case SpecialRegister::SR_TID_Y: