yuzu-emu
/
yuzu
Archived
1
0
Fork 0
Code

Merge pull request #551 from bunnei/shr 

gl_shader_decompiler: Implement SHR instruction.
This commit is contained in:
bunnei 2018-06-09 00:42:44 -04:00 committed by GitHub
parent 174c22e5f6 5440b9c634
commit e2176dc7ce
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/video_core/engines/shader_bytecode.h
View File

@ -260,6 +260,10 @@ union Instruction {
}
} alu;
union {
BitField<48, 1, u64> is_signed;
} shift;
union {
BitField<39, 5, u64> shift_amount;
BitField<48, 1, u64> negate_b;

13
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -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: