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Merge pull request #501 from Subv/shader_bra

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GPU: Partially implemented the bra shader instruction
This commit is contained in:
bunnei 2018-06-04 18:31:07 -04:00 • committed by GitHub
commit cdd92dc692
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2 changed files with 45 additions and 1 deletions
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15
src/video_core/engines/shader_bytecode.h
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@ -288,6 +288,19 @@ union Instruction {
}
} texs;
union {
BitField<20, 5, u64> target;
BitField<5, 1, u64> constant_buffer;
s32 GetBranchTarget() const {
// Sign extend the branch target offset
u32 mask = 1U << (5 - 1);
u32 value = static_cast<u32>(target);
// The branch offset is relative to the next instruction, so add 1 to it.
return static_cast<s32>((value ^ mask) - mask) + 1;
}
} bra;
BitField<61, 1, u64> is_b_imm;
BitField<60, 1, u64> is_b_gpr;
BitField<59, 1, u64> is_c_gpr;
@ -306,6 +319,7 @@ class OpCode {
public:
enum class Id {
KIL,
BRA,
LD_A,
ST_A,
TEX,
@ -470,6 +484,7 @@ private:
std::vector<Matcher> table = {
#define INST(bitstring, op, type, name) Detail::GetMatcher(bitstring, op, type, name)
INST("111000110011----", Id::KIL, Type::Flow, "KIL"),
INST("111000100100----", Id::BRA, Type::Flow, "BRA"),
INST("1110111111011---", Id::LD_A, Type::Memory, "LD_A"),
INST("1110111111110---", Id::ST_A, Type::Memory, "ST_A"),
INST("1100000000111---", Id::TEX, Type::Memory, "TEX"),