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[PICA] Implement JMPC

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wheremyfoodat 2023-03-11 00:06:42 +02:00
parent 3be6553207
commit 9f61fc0a4e
2 changed files with 8 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,
JMPC = 0x2C,
JMPU = 0x2D,
CMP1 = 0x2E, // Both of these instructions are CMP
CMP2 = 0x2F,
@ -96,6 +97,7 @@ class PICAShader {
void dp4(u32 instruction);
void ifc(u32 instruction);
void ifu(u32 instruction);
void jmpc(u32 instruction);
void jmpu(u32 instruction);
void loop(u32 instruction);
void mad(u32 instruction);

6
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::JMPC: jmpc(instruction); break;
case ShaderOpcodes::JMPU: jmpu(instruction); break;
case ShaderOpcodes::LOOP: loop(instruction); break;
case ShaderOpcodes::MAX: max(instruction); break;
@ -492,6 +493,11 @@ void PICAShader::loop(u32 instruction) {
loop.increment = uniform.z();
}
void PICAShader::jmpc(u32 instruction) {
if (isCondTrue(instruction))
pc = (instruction >> 10) & 0xfff;
}
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;