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[PICA] Implement SLTI

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wheremyfoodat 2023-03-12 05:05:19 +02:00
parent 26cce7c58f
commit c6fed2641c
2 changed files with 24 additions and 0 deletions
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2
include/PICA/shader.hpp
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@ -23,6 +23,7 @@ namespace ShaderOpcodes {
RSQ = 0x0F,
MOVA = 0x12,
MOV = 0x13,
SLTI = 0x1B,
NOP = 0x21,
END = 0x22,
CALL = 0x24,
@ -111,6 +112,7 @@ class PICAShader {
void mul(u32 instruction);
void rcp(u32 instruction);
void rsq(u32 instruction);
void slti(u32 instruction);
// src1, src2 and src3 have different negation & component swizzle bits in the operand descriptor
// https://problemkaputt.github.io/gbatek.htm#3dsgpushaderinstructionsetopcodesummary in the

22
src/core/PICA/shader_interpreter.cpp
View file

@ -36,6 +36,7 @@ void PICAShader::run() {
case ShaderOpcodes::NOP: break; // Do nothing
case ShaderOpcodes::RCP: rcp(instruction); break;
case ShaderOpcodes::RSQ: rsq(instruction); break;
case ShaderOpcodes::SLTI: slti(instruction); break;
case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37:
madi(instruction);
@ -406,6 +407,27 @@ void PICAShader::madi(u32 instruction) {
}
}
void PICAShader::slti(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x1f];
const u32 src1 = (instruction >> 14) & 0x1f;
u32 src2 = (instruction >> 7) & 0x7f;
const u32 idx = (instruction >> 19) & 3;
const u32 dest = (instruction >> 21) & 0x1f;
src2 = getIndexedSource(src2, idx);
auto srcVec1 = getSourceSwizzled<1>(src1, operandDescriptor);
auto srcVec2 = getSourceSwizzled<2>(src2, operandDescriptor);
auto& destVector = getDest(dest);
u32 componentMask = operandDescriptor & 0xf;
for (int i = 0; i < 4; i++) {
if (componentMask & (1 << i)) {
destVector[3 - i] = srcVec1[3 - i] < srcVec2[3 - i] ? f24::fromFloat32(1.0) : f24::zero();
}
}
}
void PICAShader::cmp(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
const u32 src1 = (instruction >> 12) & 0x7f;