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[Shader interpreter] Implement CALL

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wheremyfoodat 2022-10-12 00:28:50 +03:00
parent c4be91588d
commit f9079f9dce
2 changed files with 17 additions and 0 deletions
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2
include/PICA/shader.hpp
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@ -22,6 +22,7 @@ namespace ShaderOpcodes {
MOV = 0x13,
NOP = 0x21,
END = 0x22,
CALL = 0x24,
CALLU = 0x26,
IFU = 0x27,
IFC = 0x28,
@ -83,6 +84,7 @@ class PICAShader {
// Shader opcodes
void add(u32 instruction);
void call(u32 instruction);
void callu(u32 instruction);
void cmp(u32 instruction);
void dp3(u32 instruction);

15
src/core/PICA/shader_interpreter.cpp
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@ -13,6 +13,7 @@ void PICAShader::run() {
switch (opcode) {
case ShaderOpcodes::ADD: add(instruction); break;
case ShaderOpcodes::CALL: call(instruction); break;
case ShaderOpcodes::CALLU: callu(instruction); break;
case ShaderOpcodes::CMP1: case ShaderOpcodes::CMP2:
cmp(instruction);
@ -393,6 +394,20 @@ void PICAShader::ifu(u32 instruction) {
}
}
void PICAShader::call(u32 instruction) {
if (callIndex >= 4) [[unlikely]]
Helpers::panic("[PICA] Overflowed CALL stack");
const u32 num = instruction & 0xff;
const u32 dest = (instruction >> 10) & 0xfff;
auto& block = callInfo[callIndex++];
block.endingPC = dest + num;
block.returnPC = pc;
pc = dest;
}
void PICAShader::callu(u32 instruction) {
const u32 bit = (instruction >> 22) & 0xf; // Bit of the bool uniform to check