bool GLDriver::compilePixelShader(PixelShader &pixel, uint8_t *buffer, size_t size)
{
auto sq_config = getRegister<latte::SQ_CONFIG>(latte::Register::SQ_CONFIG);
auto spi_ps_in_control_0 = getRegister<latte::SPI_PS_IN_CONTROL_0>(latte::Register::SPI_PS_IN_CONTROL_0);
auto spi_ps_in_control_1 = getRegister<latte::SPI_PS_IN_CONTROL_1>(latte::Register::SPI_PS_IN_CONTROL_1);
auto cb_shader_mask = getRegister<latte::CB_SHADER_MASK>(latte::Register::CB_SHADER_MASK);
fmt::MemoryWriter out;
latte::Shader shader;
std::string body;
shader.type = latte::Shader::Pixel;
if (!latte::decode(shader, gsl::as_span(buffer, size))) {
gLog->error("Failed to decode pixel shader");
return false;
}
latte::disassemble(shader, pixel.disassembly);
if (!latte::blockify(shader)) {
gLog->error("Failed to blockify pixel shader");
return false;
}
if (!glsl::generateBody(shader, body)) {
gLog->warn("Failed to translate 100% of instructions for pixel shader");
}
// Get pixel sampler types
for (auto i = 0; i < MAX_SAMPLERS_PER_TYPE; ++i) {
auto sq_tex_resource_word0 = getRegister<latte::SQ_TEX_RESOURCE_WORD0_N>(latte::Register::SQ_TEX_RESOURCE_WORD0_0 + 4 * (latte::SQ_PS_TEX_RESOURCE_0 + i * 7));
auto sq_tex_resource_word4 = getRegister<latte::SQ_TEX_RESOURCE_WORD4_N>(latte::Register::SQ_TEX_RESOURCE_WORD4_0 + 4 * (latte::SQ_PS_TEX_RESOURCE_0 + i * 7));
pixel.samplerTypes[i] = getSamplerType(sq_tex_resource_word0.DIM,
sq_tex_resource_word4.NUM_FORMAT_ALL,
sq_tex_resource_word4.FORMAT_COMP_X);
}
// Write header
writeHeader(out);
// Uniforms
writeUniforms(out, shader, sq_config, pixel.samplerTypes);
out << '\n';
// Pixel Shader Inputs
for (auto i = 0u; i < spi_ps_in_control_0.NUM_INTERP; ++i) {
auto spi_ps_input_cntl = getRegister<latte::SPI_PS_INPUT_CNTL_0>(latte::Register::SPI_PS_INPUT_CNTL_0 + i * 4);
if (spi_ps_input_cntl.FLAT_SHADE) {
out << "flat ";
}
out << "in vec4 vs_out_" << spi_ps_input_cntl.SEMANTIC << ";\n";
}
out << '\n';
// Pixel Shader Exports
auto maskBits = cb_shader_mask.value;
for (auto i = 0; i < 8; ++i) {
if (maskBits & 0xf) {
out << "out vec4 ps_out_" << i << ";\n";
}
maskBits >>= 4;
}
out << '\n';
// Program code
out << "void main()\n"
<< "{\n";
writeLocals(out, shader);
writeExports(out, shader);
// Assign vertex shader output to our GPR
for (auto i = 0u; i < spi_ps_in_control_0.NUM_INTERP; ++i) {
auto spi_ps_input_cntl = getRegister<latte::SPI_PS_INPUT_CNTL_0>(latte::Register::SPI_PS_INPUT_CNTL_0 + i * 4);
auto id = spi_ps_input_cntl.SEMANTIC;
if (id == 0xff) {
continue;
}
out << "R[" << i << "] = vs_out_" << id << ";\n";
}
out << '\n' << body << '\n';
for (auto exp : shader.exports) {
switch (exp->exportType) {
case latte::SQ_EXPORT_PIXEL: {
auto mask = cb_shader_mask.value >> (4 * exp->arrayBase);
if (!mask) {
gLog->warn("Export is masked by cb_shader_mask");
} else {
out
<< "ps_out_"
<< exp->arrayBase
<< " = exp_pixel_"
<< exp->arrayBase << '.';
if (mask & (1 << 0)) {
out << 'x';
}
if (mask & (1 << 1)) {
out << 'y';
}
if (mask & (1 << 2)) {
out << 'z';
}
if (mask & (1 << 3)) {
out << 'w';
}
out << ";\n";
}
} break;
case latte::SQ_EXPORT_POS:
throw std::logic_error("Unexpected position export in pixel shader.");
break;
case latte::SQ_EXPORT_PARAM:
throw std::logic_error("Unexpected parameter export in pixel shader.");
break;
}
}
out << "}\n";
pixel.code = out.str();
return true;
}
std::string TransFunc::getShaderDefines() const {
return "#define TF_SAMPLER_TYPE " + getSamplerType() + "\n";
}
bool GLDriver::compileVertexShader(VertexShader &vertex, FetchShader &fetch, uint8_t *buffer, size_t size)
{
auto sq_config = getRegister<latte::SQ_CONFIG>(latte::Register::SQ_CONFIG);
auto spi_vs_out_config = getRegister<latte::SPI_VS_OUT_CONFIG>(latte::Register::SPI_VS_OUT_CONFIG);
fmt::MemoryWriter out;
latte::Shader shader;
std::string body;
FetchShader::Attrib *semanticAttribs[32];
memset(semanticAttribs, 0, sizeof(FetchShader::Attrib *) * 32);
shader.type = latte::Shader::Vertex;
if (!latte::decode(shader, gsl::as_span(buffer, size))) {
gLog->error("Failed to decode vertex shader");
return false;
}
latte::disassemble(shader, vertex.disassembly);
if (!latte::blockify(shader)) {
gLog->error("Failed to blockify vertex shader");
return false;
}
if (!glsl::generateBody(shader, body)) {
gLog->warn("Failed to translate 100% of instructions for vertex shader");
}
// Get vertex sampler types
for (auto i = 0; i < MAX_SAMPLERS_PER_TYPE; ++i) {
auto sq_tex_resource_word0 = getRegister<latte::SQ_TEX_RESOURCE_WORD0_N>(latte::Register::SQ_TEX_RESOURCE_WORD0_0 + 4 * (latte::SQ_PS_TEX_RESOURCE_0 + i * 7));
auto sq_tex_resource_word4 = getRegister<latte::SQ_TEX_RESOURCE_WORD4_N>(latte::Register::SQ_TEX_RESOURCE_WORD4_0 + 4 * (latte::SQ_PS_TEX_RESOURCE_0 + i * 7));
vertex.samplerTypes[i] = getSamplerType(sq_tex_resource_word0.DIM,
sq_tex_resource_word4.NUM_FORMAT_ALL,
sq_tex_resource_word4.FORMAT_COMP_X);
}
// Write header
writeHeader(out);
// Uniforms
writeUniforms(out, shader, sq_config, vertex.samplerTypes);
out << '\n';
// Vertex Shader Inputs
for (auto &attrib : fetch.attribs) {
semanticAttribs[attrib.location] = &attrib;
out << "in "
<< getGLSLDataFormat(attrib.format, attrib.numFormat, attrib.formatComp)
<< " fs_out_" << attrib.location << ";\n";
}
out << '\n';
// Vertex Shader Exports
for (auto i = 0u; i <= spi_vs_out_config.VS_EXPORT_COUNT; i++) {
out << "out vec4 vs_out_" << i << ";\n";
}
out << '\n';
// Program code
out << "void main()\n"
<< "{\n";
writeLocals(out, shader);
writeExports(out, shader);
// Initialise registers
if (shader.gprsUsed.find(0) != shader.gprsUsed.end()) {
// TODO: Check which order of VertexID and InstanceID for r0.x, r0.y
out << "R[0] = vec4(intBitsToFloat(gl_VertexID), intBitsToFloat(gl_InstanceID), 0.0, 0.0);\n";
}
// Assign fetch shader output to our GPR
for (auto i = 0u; i < 32; ++i) {
auto sq_vtx_semantic = getRegister<latte::SQ_VTX_SEMANTIC_N>(latte::Register::SQ_VTX_SEMANTIC_0 + i * 4);
auto id = sq_vtx_semantic.SEMANTIC_ID;
if (sq_vtx_semantic.SEMANTIC_ID == 0xff) {
continue;
}
auto attrib = semanticAttribs[id];
if (!attrib) {
gLog->error("Invalid semantic mapping: {}", id);
continue;
}
out << "R[" << (i + 1) << "] = ";
auto channels = getDataFormatChannels(attrib->format);
switch (channels) {
case 1:
out << "vec4(fs_out_" << attrib->location << ", 0.0, 0.0, 0.0);\n";
break;
case 2:
out << "vec4(fs_out_" << attrib->location << ", 0.0, 0.0);\n";
break;
case 3:
out << "vec4(fs_out_" << attrib->location << ", 0.0);\n";
break;
case 4:
out << "fs_out_" << attrib->location << ";\n";
break;
}
}
out << '\n' << body << '\n';
for (auto exp : shader.exports) {
switch (exp->exportType) {
case latte::SQ_EXPORT_POS:
out << "gl_Position = exp_position_" << (exp->arrayBase - 60) << ";\n";
break;
case latte::SQ_EXPORT_PARAM:
// TODO: Use vs_out semantics?
out << "vs_out_" << exp->arrayBase << " = exp_param_" << exp->arrayBase << ";\n";
break;
case latte::SQ_EXPORT_PIXEL:
throw std::logic_error("Unexpected pixel export in vertex shader.");
break;
}
}
out << "}\n";
vertex.code = out.str();
return true;
}
