fabi/Xenia-Canary
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[GPU] Shader ALU refactoring + documentation

Browse Source 
Mainly move instruction info from the ShaderTranslator to xe::gpu::ucode for future use in the CPU shader interpreter
This commit is contained in:
Triang3l
2022-04-27 20:52:20 +03:00
parent df9a37f798
commit b42680abf7
6 changed files with 229 additions and 193 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/xenia/gpu/shader.h
View File

@@ -561,12 +561,12 @@ struct ParsedAluInstruction {
// instruction even if only constants are being exported. The XNA disassembler
// falls back to displaying the whole vector operation, even if only constant
// components are written, if the scalar operation is a nop or if the vector
// operation has side effects (but if the scalar operation isn't nop, it
// outputs the entire constant mask in the scalar operation destination).
// Normally the XNA disassembler outputs the constant mask in both vector and
// scalar operations, but that's not required by assembler, so it doesn't
// really matter whether it's specified in the vector operation, in the scalar
// operation, or in both.
// operation changes a0, p0 or kills pixels (but if the scalar operation isn't
// nop, it outputs the entire constant mask in the scalar operation
// destination). Normally the XNA disassembler outputs the constant mask in
// both vector and scalar operations, but that's not required by assembler, so
// it doesn't really matter whether it's specified in the vector operation, in
// the scalar operation, or in both.
InstructionResult vector_and_constant_result;
// Describes how the scalar operation result is stored.
InstructionResult scalar_result;
@@ -591,8 +591,8 @@ struct ParsedAluInstruction {
// will result in the same microcode (since instructions with just an empty
// write mask may have different values in other fields).
// This is for disassembly! Translators should use the write masks and
// AluVectorOpHasSideEffects to skip operations, as this only covers one very
// specific nop format!
// the changed state bits in the opcode info to skip operations, as this only
// covers one very specific nop format!
bool IsVectorOpDefaultNop() const;
// Whether the scalar part of the instruction is the same as if it was omitted
// in the assembly (if compiled or assembled with the Xbox 360 shader