Merge pull request #6585 from ameerj/hades

Shader Decompiler Rewrite

1 files changed, 49 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/ir/modifiers.h b/src/shader_recompiler/frontend/ir/modifiers.h
new file mode 100644
index 000000000..77cda1f8a
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/modifiers.h
@@ -0,0 +1,49 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/bit_field.h"
+#include "common/common_types.h"
+#include "shader_recompiler/shader_info.h"
+
+namespace Shader::IR {
+
+enum class FmzMode : u8 {
+    DontCare, // Not specified for this instruction
+    FTZ,      // Flush denorms to zero, NAN is propagated (D3D11, NVN, GL, VK)
+    FMZ,      // Flush denorms to zero, x * 0 == 0 (D3D9)
+    None,     // Denorms are not flushed, NAN is propagated (nouveau)
+};
+
+enum class FpRounding : u8 {
+    DontCare, // Not specified for this instruction
+    RN,       // Round to nearest even,
+    RM,       // Round towards negative infinity
+    RP,       // Round towards positive infinity
+    RZ,       // Round towards zero
+};
+
+struct FpControl {
+    bool no_contraction{false};
+    FpRounding rounding{FpRounding::DontCare};
+    FmzMode fmz_mode{FmzMode::DontCare};
+};
+static_assert(sizeof(FpControl) <= sizeof(u32));
+
+union TextureInstInfo {
+    u32 raw;
+    BitField<0, 16, u32> descriptor_index;
+    BitField<16, 3, TextureType> type;
+    BitField<19, 1, u32> is_depth;
+    BitField<20, 1, u32> has_bias;
+    BitField<21, 1, u32> has_lod_clamp;
+    BitField<22, 1, u32> relaxed_precision;
+    BitField<23, 2, u32> gather_component;
+    BitField<25, 2, u32> num_derivates;
+    BitField<27, 3, ImageFormat> image_format;
+};
+static_assert(sizeof(TextureInstInfo) <= sizeof(u32));
+
+} // namespace Shader::IR