From 9a95c7fa14bdfc14aacea92896c8ae8533918fe8 Mon Sep 17 00:00:00 2001
From: FengChen <vonchenplus@gmail.com>
Date: Thu, 1 Sep 2022 22:05:11 +0800
Subject: video_core: Generate mipmap texture by drawing

---
 src/shader_recompiler/frontend/ir/ir_emitter.cpp             | 8 ++++++++
 src/shader_recompiler/frontend/ir/ir_emitter.h               | 3 +++
 src/shader_recompiler/frontend/ir/opcodes.inc                | 1 +
 src/shader_recompiler/frontend/maxwell/translate_program.cpp | 2 ++
 4 files changed, 14 insertions(+)

(limited to 'src/shader_recompiler/frontend')

diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index 11086ed8c..de1ce90a3 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -378,6 +378,14 @@ F32 IREmitter::ResolutionDownFactor() {
     return Inst<F32>(Opcode::ResolutionDownFactor);
 }
 
+F32 IREmitter::RenderAreaWidth() {
+    return F32(CompositeExtract(Inst<Value>(Opcode::RenderArea), 0));
+}
+
+F32 IREmitter::RenderAreaHeight() {
+    return F32(CompositeExtract(Inst<Value>(Opcode::RenderArea), 1));
+}
+
 U32 IREmitter::LaneId() {
     return Inst<U32>(Opcode::LaneId);
 }
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index 25839a371..f163c18d9 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -103,6 +103,9 @@ public:
 
     [[nodiscard]] F32 ResolutionDownFactor();
 
+    [[nodiscard]] F32 RenderAreaWidth();
+    [[nodiscard]] F32 RenderAreaHeight();
+
     [[nodiscard]] U32 LaneId();
 
     [[nodiscard]] U32 LoadGlobalU8(const U64& address);
diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc
index 86410ddfc..f3038f298 100644
--- a/src/shader_recompiler/frontend/ir/opcodes.inc
+++ b/src/shader_recompiler/frontend/ir/opcodes.inc
@@ -63,6 +63,7 @@ OPCODE(SampleId,                                            U32,
 OPCODE(IsHelperInvocation,                                  U1,                                                                                             )
 OPCODE(YDirection,                                          F32,                                                                                            )
 OPCODE(ResolutionDownFactor,                                F32,                                                                                            )
+OPCODE(RenderArea,                                          F32x4,                                                                                          )
 
 // Undefined
 OPCODE(UndefU1,                                             U1,                                                                                             )
diff --git a/src/shader_recompiler/frontend/maxwell/translate_program.cpp b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
index 77efb4f57..dafb9deee 100644
--- a/src/shader_recompiler/frontend/maxwell/translate_program.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
@@ -213,6 +213,8 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo
 
     Optimization::ConstantPropagationPass(program);
 
+    Optimization::PositionPass(env, program);
+
     Optimization::GlobalMemoryToStorageBufferPass(program);
     Optimization::TexturePass(env, program);
 
-- 
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