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[Shader interpreter] Implement CALL

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This commit is contained in:
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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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