shader: Add partial rasterizer integration

src/shader_recompiler/frontend/maxwell/translate/impl/exit_program.cpp

@@ -0,0 +1,43 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "shader_recompiler/exception.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+
+namespace Shader::Maxwell {
+namespace {
+void ExitFragment(TranslatorVisitor& v) {
+    const ProgramHeader sph{v.env.SPH()};
+    IR::Reg src_reg{IR::Reg::R0};
+    for (u32 render_target = 0; render_target < 8; ++render_target) {
+        const std::array<bool, 4> mask{sph.ps.EnabledOutputComponents(render_target)};
+        for (u32 component = 0; component < 4; ++component) {
+            if (!mask[component]) {
+                continue;
+            }
+            v.ir.SetFragColor(render_target, component, v.F(src_reg));
+            ++src_reg;
+        }
+    }
+    if (sph.ps.omap.sample_mask != 0) {
+        throw NotImplementedException("Sample mask");
+    }
+    if (sph.ps.omap.depth != 0) {
+        throw NotImplementedException("Fragment depth");
+    }
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::EXIT() {
+    switch (env.ShaderStage()) {
+    case Stage::Fragment:
+        ExitFragment(*this);
+        break;
+    default:
+        break;
+    }
+}
+
+} // namespace Shader::Maxwell