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[PICA] Add JMPU

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wheremyfoodat 2023-03-10 04:50:47 +02:00
parent 9f7a86fc01
commit 3be6553207
2 changed files with 12 additions and 0 deletions
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2
include/PICA/shader.hpp
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@ -30,6 +30,7 @@ namespace ShaderOpcodes {
IFU = 0x27,
IFC = 0x28,
LOOP = 0x29,
JMPU = 0x2D,
CMP1 = 0x2E, // Both of these instructions are CMP
CMP2 = 0x2F,
MAD = 0x38 // Everything between 0x38-0x3F is a MAD but fuck it
@ -95,6 +96,7 @@ class PICAShader {
void dp4(u32 instruction);
void ifc(u32 instruction);
void ifu(u32 instruction);
void jmpu(u32 instruction);
void loop(u32 instruction);
void mad(u32 instruction);
void max(u32 instruction);

10
src/core/PICA/shader_interpreter.cpp
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@ -24,6 +24,7 @@ void PICAShader::run() {
case ShaderOpcodes::END: return; // Stop running shader
case ShaderOpcodes::IFC: ifc(instruction); break;
case ShaderOpcodes::IFU: ifu(instruction); break;
case ShaderOpcodes::JMPU: jmpu(instruction); break;
case ShaderOpcodes::LOOP: loop(instruction); break;
case ShaderOpcodes::MAX: max(instruction); break;
case ShaderOpcodes::MIN: min(instruction); break;
@ -489,4 +490,13 @@ void PICAShader::loop(u32 instruction) {
loop.endingPC = dest + 1; // Loop is inclusive so we need + 1 here
loop.iterations = uniform.x() + 1;
loop.increment = uniform.z();
}
void PICAShader::jmpu(u32 instruction) {
const u32 test = (instruction & 1) ^ 1; // If the LSB is 0 we want to compare to true, otherwise compare to false
const u32 dest = (instruction >> 10) & 0xfff;
const u32 bit = (instruction >> 22) & 0xf; // Bit of the bool uniform to check
if (((boolUniform >> bit) & 1) == test) // Jump if the bool uniform is the value we want
pc = dest;
}