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Merge pull request #549 from OFFTKP/fog

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Implement fog
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wheremyfoodat 2024-07-21 19:01:13 +00:00 • committed by GitHub
commit cb2448a004
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GPG key ID: B5690EEEBB952194
12 changed files with 178 additions and 33 deletions
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3
include/PICA/gpu.hpp
View file

@ -92,6 +92,9 @@ class GPU {
// Set to false by the renderer when the lighting_lut is uploaded ot the GPU
bool lightingLUTDirty = false;
bool fogLUTDirty = false;
std::array<uint32_t, 128> fogLUT;
GPU(Memory& mem, EmulatorConfig& config);
void display() { renderer->display(); }
void screenshot(const std::string& name) { renderer->screenshot(name); }

24
include/PICA/pica_frag_config.hpp
View file

@ -29,6 +29,18 @@ namespace PICA {
std::array<u32, 4 * 6> tevConfigs;
};
struct FogConfig {
union {
u32 raw{};
BitField<0, 3, FogMode> mode;
BitField<3, 1, u32> flipDepth;
BitField<8, 8, u32> fogColorR;
BitField<16, 8, u32> fogColorG;
BitField<24, 8, u32> fogColorB;
};
};
struct Light {
union {
u16 raw;
@ -189,6 +201,7 @@ namespace PICA {
struct FragmentConfig {
OutputConfig outConfig;
TextureConfig texConfig;
FogConfig fogConfig;
LightingConfig lighting;
bool operator==(const FragmentConfig& config) const {
@ -220,12 +233,21 @@ namespace PICA {
setupTevStage(4);
setupTevStage(5);
#undef setupTevStage
fogConfig.mode = (FogMode)Helpers::getBits<0, 3>(regs[InternalRegs::TexEnvUpdateBuffer]);
if (fogConfig.mode == FogMode::Fog) {
fogConfig.flipDepth = Helpers::getBit<16>(regs[InternalRegs::TexEnvUpdateBuffer]);
fogConfig.fogColorR = Helpers::getBits<0, 8>(regs[InternalRegs::FogColor]);
fogConfig.fogColorG = Helpers::getBits<8, 8>(regs[InternalRegs::FogColor]);
fogConfig.fogColorB = Helpers::getBits<16, 8>(regs[InternalRegs::FogColor]);
}
}
};
static_assert(
std::has_unique_object_representations<OutputConfig>() && std::has_unique_object_representations<TextureConfig>() &&
std::has_unique_object_representations<Light>()
std::has_unique_object_representations<FogConfig>() && std::has_unique_object_representations<Light>()
);
} // namespace PICA

18
include/PICA/regs.hpp
View file

@ -51,6 +51,18 @@ namespace PICA {
#undef defineTexEnv
// clang-format on
// Fog registers
FogColor = 0xE1,
FogLUTIndex = 0xE6,
FogLUTData0 = 0xE8,
FogLUTData1 = 0xE9,
FogLUTData2 = 0xEA,
FogLUTData3 = 0xEB,
FogLUTData4 = 0xEC,
FogLUTData5 = 0xED,
FogLUTData6 = 0xEE,
FogLUTData7 = 0xEF,
// Framebuffer registers
ColourOperation = 0x100,
BlendFunc = 0x101,
@ -384,6 +396,12 @@ namespace PICA {
GreaterOrEqual = 7,
};
enum class FogMode : u32 {
Disabled = 0,
Fog = 5,
Gas = 7,
};
struct TexEnvConfig {
enum class Source : u8 {
PrimaryColor = 0x0,

2
include/PICA/shader_gen.hpp
View file

@ -24,6 +24,8 @@ namespace PICA::ShaderGen {
void compileLUTLookup(std::string& shader, const PICA::FragmentConfig& config, u32 lightIndex, u32 lutID);
bool isSamplerEnabled(u32 environmentID, u32 lutID);
void compileFog(std::string& shader, const PICA::FragmentConfig& config);
public:
FragmentGenerator(API api, Language language) : api(api), language(language) {}
std::string generate(const PICA::FragmentConfig& config);

3
include/renderer_gl/renderer_gl.hpp
View file

@ -63,7 +63,7 @@ class RendererGL final : public Renderer {
OpenGL::VertexBuffer dummyVBO;
OpenGL::Texture screenTexture;
OpenGL::Texture lightLUTTexture;
OpenGL::Texture LUTTexture;
OpenGL::Framebuffer screenFramebuffer;
OpenGL::Texture blankTexture;
// The "default" vertex shader to use when using specialized shaders but not PICA vertex shader -> GLSL recompilation
@ -90,6 +90,7 @@ class RendererGL final : public Renderer {
void setupUbershaderTexEnv();
void bindTexturesToSlots();
void updateLightingLUT();
void updateFogLUT();
void initGraphicsContextInternal();
public: