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[SPIR-V] Instruction predication

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Triang3l
2020-10-26 22:12:01 +03:00
parent 556c8de2ab
commit 1c83c8dcfa
3 changed files with 78 additions and 0 deletions
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5
src/xenia/gpu/spirv_shader_translator.h
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@@ -66,6 +66,8 @@ class SpirvShaderTranslator : public ShaderTranslator {
const ParsedLoopEndInstruction& instr) override;
void ProcessJumpInstruction(const ParsedJumpInstruction& instr) override;
void ProcessAluInstruction(const ParsedAluInstruction& instr) override;
private:
// TODO(Triang3l): Depth-only pixel shader.
bool IsSpirvVertexOrTessEvalShader() const { return is_vertex_shader(); }
@@ -96,6 +98,9 @@ class SpirvShaderTranslator : public ShaderTranslator {
// needed (for example, in jumps).
void UpdateExecConditionals(ParsedExecInstruction::Type type,
uint32_t bool_constant_index, bool condition);
// Opens or reopens the predicate check conditional for the instruction.
// Should be called before processing a non-control-flow instruction.
void UpdateInstructionPredication(bool predicated, bool condition);
// Closes the instruction-level predicate conditional if it's open, useful if
// a control flow instruction needs to do some code which needs to respect the
// current exec conditional, but can't itself be predicated.