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| author | bunnei <bunneidev@gmail.com> | 2018-06-09 00:42:44 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-06-09 00:42:44 -0400 |
| commit | e2176dc7ce937e03c002342a1d5e9d8f61212215 (patch) | |
| tree | 6eb241cd96ae3d9be7e67acc29715c2403049264 /src | |
| parent | 174c22e5f6a1fd93842a8e8fda6e63e676d34866 (diff) | |
| parent | 5440b9c634555c174a9eaf7fd6d308c4ab2cb3bb (diff) | |
Merge pull request #551 from bunnei/shr
gl_shader_decompiler: Implement SHR instruction.
Diffstat (limited to 'src')
| -rw-r--r-- | src/video_core/engines/shader_bytecode.h | 4 | ||||
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 13 |
2 files changed, 17 insertions, 0 deletions
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h index dc3dd8a80..51dcc0d08 100644 --- a/src/video_core/engines/shader_bytecode.h +++ b/src/video_core/engines/shader_bytecode.h @@ -261,6 +261,10 @@ union Instruction { } alu; union { + BitField<48, 1, u64> is_signed; + } shift; + + union { BitField<39, 5, u64> shift_amount; BitField<48, 1, u64> negate_b; BitField<49, 1, u64> negate_a; diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 4e248d328..07a90f5ad 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -979,6 +979,19 @@ private: } switch (opcode->GetId()) { + case OpCode::Id::SHR_C: + case OpCode::Id::SHR_R: + case OpCode::Id::SHR_IMM: { + if (!instr.shift.is_signed) { + // Logical shift right + op_a = "uint(" + op_a + ')'; + } + + // Cast to int is superfluous for arithmetic shift, it's only for a logical shift + regs.SetRegisterToInteger(instr.gpr0, true, 0, "int(" + op_a + " >> " + op_b + ')', + 1, 1); + break; + } case OpCode::Id::SHL_C: case OpCode::Id::SHL_R: case OpCode::Id::SHL_IMM: |