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Merge pull request #521 from Subv/bra
GPU: Corrected the branch targets for the shader bra instruction.
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commit
38eb33f150
@ -325,15 +325,16 @@ union Instruction {
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} texs;
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} texs;
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union {
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union {
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BitField<20, 5, u64> target;
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BitField<20, 24, u64> target;
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BitField<5, 1, u64> constant_buffer;
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BitField<5, 1, u64> constant_buffer;
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s32 GetBranchTarget() const {
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s32 GetBranchTarget() const {
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// Sign extend the branch target offset
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// Sign extend the branch target offset
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u32 mask = 1U << (5 - 1);
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u32 mask = 1U << (24 - 1);
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u32 value = static_cast<u32>(target);
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u32 value = static_cast<u32>(target);
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// The branch offset is relative to the next instruction, so add 1 to it.
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// The branch offset is relative to the next instruction and is stored in bytes, so
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return static_cast<s32>((value ^ mask) - mask) + 1;
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// divide it by the size of an instruction and add 1 to it.
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return static_cast<s32>((value ^ mask) - mask) / sizeof(Instruction) + 1;
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}
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}
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} bra;
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} bra;
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