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[PICA] Implement RCP

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This commit is contained in:
wheremyfoodat
2023-01-07 01:34:34 +02:00
parent 64de1391ab
commit bbb62a83d0
2 changed files with 23 additions and 0 deletions
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21
src/core/PICA/shader_interpreter.cpp
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@@ -30,6 +30,7 @@ void PICAShader::run() {
case ShaderOpcodes::MOVA: mova(instruction); break;
case ShaderOpcodes::MUL: mul(instruction); break;
case ShaderOpcodes::NOP: break; // Do nothing
case ShaderOpcodes::RCP: rcp(instruction); break;
case ShaderOpcodes::RSQ: rsq(instruction); break;
case 0x38: case 0x39: case 0x3A: case 0x3B: case 0x3C: case 0x3D: case 0x3E: case 0x3F:
@@ -292,6 +293,26 @@ void PICAShader::dp4(u32 instruction) {
}
}
void PICAShader::rcp(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
const u32 src1 = (instruction >> 12) & 0x7f;
const u32 idx = (instruction >> 19) & 3;
const u32 dest = (instruction >> 21) & 0x1f;
if (idx) Helpers::panic("[PICA] RCP: idx != 0");
vec4f srcVec1 = getSourceSwizzled<1>(src1, operandDescriptor);
vec4f& destVector = getDest(dest);
f24 res = f24::fromFloat32(1.0f) / srcVec1[0];
u32 componentMask = operandDescriptor & 0xf;
for (int i = 0; i < 4; i++) {
if (componentMask & (1 << i)) {
destVector[3 - i] = res;
}
}
}
void PICAShader::rsq(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
const u32 src1 = (instruction >> 12) & 0x7f;