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[PICA] Implement dp3

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wheremyfoodat 2022-09-25 18:41:32 +03:00
parent 3706c7ee0c
commit cd2da6d50f
2 changed files with 26 additions and 0 deletions
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2
include/PICA/shader.hpp
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@ -13,6 +13,7 @@ enum class ShaderType {
namespace ShaderOpcodes {
enum : u32 {
ADD = 0x00,
DP3 = 0x01,
DP4 = 0x02,
MUL = 0x08,
MOVA = 0x12,
@ -56,6 +57,7 @@ class PICAShader {
// Shader opcodes
void add(u32 instruction);
void dp3(u32 instruction);
void dp4(u32 instruction);
void loop(u32 instruction);
void mov(u32 instruction);

24
src/core/PICA/shader_interpreter.cpp
View file

@ -2,6 +2,7 @@
void PICAShader::run() {
pc = 0;
loopIndex = 0;
while (true) {
const u32 instruction = loadedShader[pc++];
@ -9,6 +10,7 @@ void PICAShader::run() {
switch (opcode) {
case ShaderOpcodes::ADD: add(instruction); break;
case ShaderOpcodes::DP3: dp3(instruction); break;
case ShaderOpcodes::DP4: dp4(instruction); break;
case ShaderOpcodes::END: return; // Stop running shader
case ShaderOpcodes::LOOP: loop(instruction); break;
@ -147,6 +149,28 @@ void PICAShader::mova(u32 instruction) {
addrRegister.y() = static_cast<s32>(srcVector.y().toFloat32());
}
void PICAShader::dp3(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
const u32 src1 = (instruction >> 12) & 0x7f;
const u32 src2 = (instruction >> 7) & 0x1f; // src2 coming first because PICA moment
const u32 idx = (instruction >> 19) & 3;
const u32 dest = (instruction >> 21) & 0x1f;
if (idx) Helpers::panic("[PICA] DP3: idx != 0");
vec4f srcVec1 = getSourceSwizzled<1>(src1, operandDescriptor);
vec4f srcVec2 = getSourceSwizzled<2>(src2, operandDescriptor);
vec4f& destVector = getDest(dest);
f24 dot = srcVec1[0] * srcVec2[0] + srcVec1[1] * srcVec2[1] + srcVec1[2] * srcVec2[2];
u32 componentMask = operandDescriptor & 0xf;
for (int i = 0; i < 4; i++) {
if (componentMask & (1 << i)) {
destVector[3 - i] = dot;
}
}
}
void PICAShader::dp4(u32 instruction) {
const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
const u32 src1 = (instruction >> 12) & 0x7f;