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Shadergen: Upload light uniforms

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wheremyfoodat 2024-07-18 03:37:11 +03:00
parent ccf9693877
commit 7e480e35ec
4 changed files with 56 additions and 2 deletions
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2
src/core/PICA/shader_gen_glsl.cpp
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@ -23,6 +23,8 @@ static constexpr const char* uniformDefinition = R"(
vec4 tevBufferColor;
vec4 clipCoords;
// Note: We upload this as a u32 and decode on GPU
uint globalAmbientLight;
LightSource lightSources[8];
};
)";

38
src/core/renderer_gl/renderer_gl.cpp
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@ -877,6 +877,44 @@ OpenGL::Program& RendererGL::getSpecializedShader() {
// Append lighting uniforms
if (fsConfig.lighting.enable) {
uniforms.globalAmbientLight = regs[InternalRegs::LightGlobalAmbient];
for (int i = 0; i < 8; i++) {
auto& light = uniforms.lightUniforms[i];
const u32 specular0 = regs[InternalRegs::Light0Specular0 + i * 0x10];
const u32 specular1 = regs[InternalRegs::Light0Specular1 + i * 0x10];
const u32 diffuse = regs[InternalRegs::Light0Diffuse + i * 0x10];
const u32 ambient = regs[InternalRegs::Light0Ambient + i * 0x10];
const u32 lightXY = regs[InternalRegs::Light0XY + i * 0x10];
const u32 lightZ = regs[InternalRegs::Light0Z + i * 0x10];
const u32 spotlightXY = regs[InternalRegs::Light0SpotlightXY + i * 0x10];
const u32 spotlightZ = regs[InternalRegs::Light0SpotlightZ + i * 0x10];
const u32 attenuationBias = regs[InternalRegs::Light0AttenuationBias + i * 0x10];
const u32 attenuationScale = regs[InternalRegs::Light0AttenuationScale + i * 0x10];
#define lightColorToVec3(value) \
{ \
float(Helpers::getBits<20, 8>(value)) / 255.0f, \
float(Helpers::getBits<10, 8>(value)) / 255.0f, \
float(Helpers::getBits<0, 8>(value)) / 255.0f, \
}
light.specular0 = lightColorToVec3(specular0);
light.specular1 = lightColorToVec3(specular1);
light.diffuse = lightColorToVec3(diffuse);
light.ambient = lightColorToVec3(ambient);
light.position[0] = Floats::f16::fromRaw(u16(lightXY)).toFloat32();
light.position[1] = Floats::f16::fromRaw(u16(lightXY >> 16)).toFloat32();
light.position[2] = Floats::f16::fromRaw(u16(lightXY)).toFloat32();
// Fixed point 1.11.1 to float, without negation
light.spotlightDirection[0] = float(s32(spotlightXY & 0x1FFF) << 19 >> 19) / 2047.0;
light.spotlightDirection[1] = float(s32((spotlightXY >> 16) & 0x1FFF) << 19 >> 19) / 2047.0;
light.spotlightDirection[2] = float(s32(spotlightZ & 0x1FFF) << 19 >> 19) / 2047.0;
light.distanceAttenuationBias = Floats::f20::fromRaw(attenuationBias & 0xFFFFF).toFloat32();
light.distanceAttenuationScale = Floats::f20::fromRaw(attenuationScale & 0xFFFFF).toFloat32();
#undef lightColorToVec3
}
}
gl.bindUBO(programEntry.uboBinding);