metaforce/aurora/lib/gfx/gx.hpp

266 lines
9.6 KiB
C++

#pragma once
#include "common.hpp"
#include <variant>
namespace aurora::gfx::gx {
constexpr u32 MaxTextures = GX::MAX_TEXMAP;
constexpr u32 MaxTevStages = GX::MAX_TEVSTAGE;
constexpr u32 MaxColorChannels = 2; // COLOR0A0, COLOR1A1
constexpr u32 MaxTevRegs = 3; // TEVREG0-2
constexpr u32 MaxKColors = GX::MAX_KCOLOR;
constexpr u32 MaxTexMtx = 10;
constexpr u32 MaxPTTexMtx = 20;
constexpr u32 MaxTexCoord = GX::MAX_TEXCOORD;
template <typename Arg, Arg Default>
struct TevPass {
Arg a = Default;
Arg b = Default;
Arg c = Default;
Arg d = Default;
};
struct TevOp {
GX::TevOp op = GX::TevOp::TEV_ADD;
GX::TevBias bias = GX::TevBias::TB_ZERO;
GX::TevScale scale = GX::TevScale::CS_SCALE_1;
GX::TevRegID outReg = GX::TevRegID::TEVPREV;
bool clamp = true;
};
struct TevStage {
TevPass<GX::TevColorArg, GX::CC_ZERO> colorPass;
TevPass<GX::TevAlphaArg, GX::CA_ZERO> alphaPass;
TevOp colorOp;
TevOp alphaOp;
GX::TevKColorSel kcSel = GX::TEV_KCSEL_1;
GX::TevKAlphaSel kaSel = GX::TEV_KASEL_1;
GX::TexCoordID texCoordId = GX::TEXCOORD_NULL;
GX::TexMapID texMapId = GX::TEXMAP_NULL;
GX::ChannelID channelId = GX::COLOR_NULL;
};
struct TextureBind {
aurora::gfx::TextureHandle handle;
metaforce::EClampMode clampMode;
float lod;
TextureBind() noexcept = default;
TextureBind(aurora::gfx::TextureHandle handle, metaforce::EClampMode clampMode, float lod) noexcept
: handle(std::move(handle)), clampMode(clampMode), lod(lod) {}
void reset() noexcept { handle.reset(); };
[[nodiscard]] wgpu::SamplerDescriptor get_descriptor() const noexcept;
operator bool() const noexcept { return handle; }
};
// For shader generation
struct ColorChannelConfig {
GX::ColorSrc matSrc = GX::SRC_REG;
GX::ColorSrc ambSrc = GX::SRC_REG;
bool lightingEnabled = false;
};
// For uniform generation
struct ColorChannelState {
zeus::CColor matColor = zeus::skClear;
zeus::CColor ambColor = zeus::skClear;
GX::LightMask lightState;
};
using LightVariant = std::variant<std::monostate, Light, zeus::CColor>;
// Mat4x4 used instead of Mat4x3 for padding purposes
using TexMtxVariant = std::variant<std::monostate, Mat4x2<float>, Mat4x4<float>>;
struct TcgConfig {
GX::TexGenType type = GX::TG_MTX2x4;
GX::TexGenSrc src = GX::MAX_TEXGENSRC;
GX::TexMtx mtx = GX::IDENTITY;
GX::PTTexMtx postMtx = GX::PTIDENTITY;
bool normalize = false;
};
struct FogState {
GX::FogType type = GX::FOG_NONE;
float startZ = 0.f;
float endZ = 0.f;
float nearZ = 0.f;
float farZ = 0.f;
zeus::CColor color;
};
struct GXState {
zeus::CMatrix4f mv;
zeus::CMatrix4f mvInv;
zeus::CMatrix4f proj;
FogState fog;
GX::CullMode cullMode = GX::CULL_BACK;
GX::BlendMode blendMode = GX::BM_NONE;
GX::BlendFactor blendFacSrc = GX::BL_SRCALPHA;
GX::BlendFactor blendFacDst = GX::BL_INVSRCALPHA;
GX::LogicOp blendOp = GX::LO_CLEAR;
GX::Compare depthFunc = GX::LEQUAL;
zeus::CColor clearColor = zeus::skBlack;
std::optional<float> dstAlpha;
std::optional<float> alphaDiscard;
std::array<zeus::CColor, MaxTevRegs> colorRegs;
std::array<zeus::CColor, GX::MAX_KCOLOR> kcolors;
std::array<ColorChannelConfig, MaxColorChannels> colorChannelConfig;
std::array<ColorChannelState, MaxColorChannels> colorChannelState;
std::array<LightVariant, GX::MaxLights> lights;
std::array<TevStage, MaxTevStages> tevStages;
std::array<TextureBind, MaxTextures> textures;
std::array<TexMtxVariant, MaxTexMtx> texMtxs;
std::array<Mat4x4<float>, MaxPTTexMtx> ptTexMtxs;
std::array<TcgConfig, MaxTexCoord> tcgs;
bool depthCompare = true;
bool depthUpdate = true;
bool alphaUpdate = true;
u8 numChans = 0;
u8 numIndStages = 0;
u8 numTevStages = 0;
u8 numTexGens = 0;
};
extern GXState g_gxState;
static inline Mat4x4<float> get_combined_matrix() noexcept { return g_gxState.proj * g_gxState.mv; }
void shutdown() noexcept;
const TextureBind& get_texture(GX::TexMapID id) noexcept;
struct ShaderConfig {
GX::FogType fogType;
std::array<std::optional<TevStage>, MaxTevStages> tevStages;
std::array<ColorChannelConfig, MaxColorChannels> colorChannels;
std::array<TcgConfig, MaxTexCoord> tcgs;
std::optional<float> alphaDiscard;
bool denormalizedVertexAttributes = false;
bool denormalizedHasNrm = false; // TODO this is a hack
};
struct PipelineConfig {
ShaderConfig shaderConfig;
GX::Primitive primitive;
GX::Compare depthFunc;
GX::CullMode cullMode;
GX::BlendMode blendMode;
GX::BlendFactor blendFacSrc, blendFacDst;
GX::LogicOp blendOp;
std::optional<float> dstAlpha;
bool depthCompare, depthUpdate, alphaUpdate;
};
struct GXBindGroupLayouts {
wgpu::BindGroupLayout uniformLayout;
wgpu::BindGroupLayout samplerLayout;
wgpu::BindGroupLayout textureLayout;
};
struct GXBindGroups {
BindGroupRef uniformBindGroup;
BindGroupRef samplerBindGroup;
BindGroupRef textureBindGroup;
};
// Output info from shader generation
struct ShaderInfo {
GXBindGroups bindGroups;
std::bitset<MaxTextures> sampledTextures;
std::bitset<MaxKColors> sampledKColors;
std::bitset<MaxColorChannels> sampledColorChannels;
std::bitset<MaxTevRegs> usesTevReg;
std::bitset<MaxTexMtx> usesTexMtx;
std::bitset<MaxPTTexMtx> usesPTTexMtx;
std::array<GX::TexGenType, MaxTexMtx> texMtxTypes;
u32 uniformSize = 0;
bool usesVtxColor : 1 = false;
bool usesNormal : 1 = false;
bool usesFog : 1 = false;
};
struct BindGroupRanges {
Range vtxDataRange;
Range nrmDataRange;
Range tcDataRange;
Range packedTcDataRange;
};
ShaderInfo populate_pipeline_config(PipelineConfig& config, GX::Primitive primitive,
const BindGroupRanges& ranges) noexcept;
wgpu::RenderPipeline build_pipeline(const PipelineConfig& config, const ShaderInfo& info,
ArrayRef<wgpu::VertexBufferLayout> vtxBuffers, wgpu::ShaderModule shader,
zstring_view label) noexcept;
std::pair<wgpu::ShaderModule, ShaderInfo> build_shader(const ShaderConfig& config) noexcept;
// Range build_vertex_buffer(const GXShaderInfo& info) noexcept;
Range build_uniform(const ShaderInfo& info) noexcept;
GXBindGroupLayouts build_bind_group_layouts(const ShaderInfo& info, const ShaderConfig& config) noexcept;
GXBindGroups build_bind_groups(const ShaderInfo& info, const ShaderConfig& config,
const BindGroupRanges& ranges) noexcept;
struct DlVert {
s16 pos;
s16 norm;
// colors ignored
std::array<s16, 7> uvs;
// pn_mtx_idx ignored
// tex_mtx_idxs ignored
s16 _pad;
};
} // namespace aurora::gfx::gx
namespace aurora {
template <typename Arg, Arg Default>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::TevPass<Arg, Default>& input) {
XXH3_64bits_update(&state, &input.a, sizeof(Arg));
XXH3_64bits_update(&state, &input.b, sizeof(Arg));
XXH3_64bits_update(&state, &input.c, sizeof(Arg));
XXH3_64bits_update(&state, &input.d, sizeof(Arg));
}
template <>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::TevOp& input) {
XXH3_64bits_update(&state, &input.op, sizeof(gfx::gx::TevOp::op));
XXH3_64bits_update(&state, &input.bias, sizeof(gfx::gx::TevOp::bias));
XXH3_64bits_update(&state, &input.scale, sizeof(gfx::gx::TevOp::scale));
XXH3_64bits_update(&state, &input.outReg, sizeof(gfx::gx::TevOp::outReg));
XXH3_64bits_update(&state, &input.clamp, sizeof(bool));
}
template <>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::TevStage& input) {
xxh3_update(state, input.colorPass);
xxh3_update(state, input.alphaPass);
xxh3_update(state, input.colorOp);
xxh3_update(state, input.alphaOp);
XXH3_64bits_update(&state, &input.kcSel, sizeof(gfx::gx::TevStage::kcSel));
XXH3_64bits_update(&state, &input.kaSel, sizeof(gfx::gx::TevStage::kaSel));
XXH3_64bits_update(&state, &input.texCoordId, sizeof(gfx::gx::TevStage::texCoordId));
XXH3_64bits_update(&state, &input.texMapId, sizeof(gfx::gx::TevStage::texMapId));
XXH3_64bits_update(&state, &input.channelId, sizeof(gfx::gx::TevStage::channelId));
}
template <>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::ColorChannelConfig& input) {
XXH3_64bits_update(&state, &input.lightingEnabled, sizeof(gfx::gx::ColorChannelConfig::lightingEnabled));
XXH3_64bits_update(&state, &input.matSrc, sizeof(gfx::gx::ColorChannelConfig::matSrc));
if (input.lightingEnabled) {
// Unused when lighting is disabled
XXH3_64bits_update(&state, &input.ambSrc, sizeof(gfx::gx::ColorChannelConfig::ambSrc));
}
}
template <>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::TcgConfig& input) {
XXH3_64bits_update(&state, &input.type, sizeof(gfx::gx::TcgConfig::type));
XXH3_64bits_update(&state, &input.src, sizeof(gfx::gx::TcgConfig::src));
XXH3_64bits_update(&state, &input.mtx, sizeof(gfx::gx::TcgConfig::mtx));
XXH3_64bits_update(&state, &input.postMtx, sizeof(gfx::gx::TcgConfig::postMtx));
XXH3_64bits_update(&state, &input.normalize, sizeof(gfx::gx::TcgConfig::normalize));
}
template <>
inline void xxh3_update(XXH3_state_t& state, const gfx::gx::ShaderConfig& input) {
for (const auto& item : input.tevStages) {
if (!item) {
break;
}
xxh3_update(state, *item);
}
for (const auto& item : input.colorChannels) {
xxh3_update(state, item);
}
for (const auto& item : input.tcgs) {
xxh3_update(state, item);
}
if (input.alphaDiscard) {
XXH3_64bits_update(&state, &*input.alphaDiscard, sizeof(float));
}
XXH3_64bits_update(&state, &input.denormalizedVertexAttributes,
sizeof(gfx::gx::ShaderConfig::denormalizedVertexAttributes));
XXH3_64bits_update(&state, &input.denormalizedHasNrm, sizeof(gfx::gx::ShaderConfig::denormalizedHasNrm));
XXH3_64bits_update(&state, &input.fogType, sizeof(gfx::gx::ShaderConfig::fogType));
}
} // namespace aurora