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Shader: Implemented the predicate and mode arguments of LOP.

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The mode can be used to set the predicate to true depending on the result of the logic operation. In some cases, this means discarding the result (writing it to register 0xFF (Zero)).

This is used by Super Mario Odyssey.
This commit is contained in:
Subv
2018-08-18 14:36:37 -05:00
parent 6eba539f4a
commit 8335b2f115
2 changed files with 39 additions and 11 deletions
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7
src/video_core/engines/shader_bytecode.h
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@ -214,6 +214,11 @@ enum class FlowCondition : u64 {
Fcsm_Tr = 0x1C, // TODO(bunnei): What is this used for?
};
enum class PredicateResultMode : u64 {
None = 0x0,
NotZero = 0x3,
};
union Instruction {
Instruction& operator=(const Instruction& instr) {
value = instr.value;
@ -254,7 +259,7 @@ union Instruction {
BitField<39, 1, u64> invert_a;
BitField<40, 1, u64> invert_b;
BitField<41, 2, LogicOperation> operation;
BitField<44, 2, u64> unk44;
BitField<44, 2, PredicateResultMode> pred_result_mode;
BitField<48, 3, Pred> pred48;
} lop;