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metaforce/aurora/lib/gfx/gx.cpp

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#include "gx.hpp"
#include "../gpu.hpp"
#include "common.hpp"
#include <absl/container/flat_hash_map.h>
using aurora::gfx::gx::g_gxState;
static logvisor::Module Log("aurora::gx");
void GXSetNumChans(u8 num) noexcept { g_gxState.numChans = num; }
void GXSetNumIndStages(u8 num) noexcept { g_gxState.numIndStages = num; }
void GXSetNumTevStages(u8 num) noexcept { g_gxState.numTevStages = num; }
void GXSetNumTexGens(u8 num) noexcept { g_gxState.numTexGens = num; }
void GXSetTevAlphaIn(GX::TevStageID stageId, GX::TevAlphaArg a, GX::TevAlphaArg b, GX::TevAlphaArg c,
GX::TevAlphaArg d) noexcept {
g_gxState.tevStages[stageId].alphaPass = {a, b, c, d};
}
void GXSetTevAlphaOp(GX::TevStageID stageId, GX::TevOp op, GX::TevBias bias, GX::TevScale scale, bool clamp,
GX::TevRegID outReg) noexcept {
g_gxState.tevStages[stageId].alphaOp = {op, bias, scale, outReg, clamp};
}
void GXSetTevColorIn(GX::TevStageID stageId, GX::TevColorArg a, GX::TevColorArg b, GX::TevColorArg c,
GX::TevColorArg d) noexcept {
g_gxState.tevStages[stageId].colorPass = {a, b, c, d};
}
void GXSetTevColorOp(GX::TevStageID stageId, GX::TevOp op, GX::TevBias bias, GX::TevScale scale, bool clamp,
GX::TevRegID outReg) noexcept {
g_gxState.tevStages[stageId].colorOp = {op, bias, scale, outReg, clamp};
}
void GXSetCullMode(GX::CullMode mode) noexcept { g_gxState.cullMode = mode; }
void GXSetBlendMode(GX::BlendMode mode, GX::BlendFactor src, GX::BlendFactor dst, GX::LogicOp op) noexcept {
g_gxState.blendMode = mode;
g_gxState.blendFacSrc = src;
g_gxState.blendFacDst = dst;
g_gxState.blendOp = op;
}
void GXSetZMode(bool compare_enable, GX::Compare func, bool update_enable) noexcept {
g_gxState.depthCompare = compare_enable;
g_gxState.depthFunc = func;
g_gxState.depthUpdate = update_enable;
}
void GXSetTevColor(GX::TevRegID id, const zeus::CColor& color) noexcept {
if (id < GX::TEVREG0 || id > GX::TEVREG2) {
Log.report(logvisor::Fatal, FMT_STRING("bad tevreg {}"), id);
unreachable();
}
g_gxState.colorRegs[id - 1] = color;
}
void GXSetTevKColor(GX::TevKColorID id, const zeus::CColor& color) noexcept {
if (id >= GX::MAX_KCOLOR) {
Log.report(logvisor::Fatal, FMT_STRING("bad kcolor {}"), id);
unreachable();
}
g_gxState.kcolors[id] = color;
}
void GXSetAlphaUpdate(bool enabled) noexcept { g_gxState.alphaUpdate = enabled; }
void GXSetDstAlpha(bool enabled, float value) noexcept {
if (enabled) {
g_gxState.dstAlpha = value;
} else {
g_gxState.dstAlpha.reset();
}
}
void GXSetCopyClear(const zeus::CColor& color, float depth) noexcept { g_gxState.clearColor = color; }
void GXSetTevOrder(GX::TevStageID id, GX::TexCoordID tcid, GX::TexMapID tmid, GX::ChannelID cid) noexcept {
auto& stage = g_gxState.tevStages[id];
stage.texCoordId = tcid;
stage.texMapId = tmid;
stage.channelId = cid;
}
void GXSetTevKColorSel(GX::TevStageID id, GX::TevKColorSel sel) noexcept { g_gxState.tevStages[id].kcSel = sel; }
void GXSetTevKAlphaSel(GX::TevStageID id, GX::TevKAlphaSel sel) noexcept { g_gxState.tevStages[id].kaSel = sel; }
void GXSetChanAmbColor(GX::ChannelID id, const zeus::CColor& color) noexcept {
if (id < GX::COLOR0A0 || id > GX::COLOR1A1) {
Log.report(logvisor::Fatal, FMT_STRING("bad channel {}"), id);
unreachable();
}
g_gxState.colorChannelState[id - GX::COLOR0A0].ambColor = color;
}
void GXSetChanMatColor(GX::ChannelID id, const zeus::CColor& color) noexcept {
if (id < GX::COLOR0A0 || id > GX::COLOR1A1) {
Log.report(logvisor::Fatal, FMT_STRING("bad channel {}"), id);
unreachable();
}
g_gxState.colorChannelState[id - GX::COLOR0A0].matColor = color;
}
void GXSetChanCtrl(GX::ChannelID id, bool lightingEnabled, GX::ColorSrc ambSrc, GX::ColorSrc matSrc,
GX::LightMask lightState, GX::DiffuseFn diffFn, GX::AttnFn attnFn) noexcept {
if (id < GX::COLOR0A0 || id > GX::COLOR1A1) {
Log.report(logvisor::Fatal, FMT_STRING("bad channel {}"), id);
unreachable();
}
if (diffFn != GX::DF_NONE && diffFn != GX::DF_CLAMP) {
Log.report(logvisor::Fatal, FMT_STRING("unhandled diffuse fn {}"), diffFn);
unreachable();
}
if (attnFn != GX::AF_NONE && attnFn != GX::AF_SPOT) {
Log.report(logvisor::Fatal, FMT_STRING("unhandled attn fn {}"), attnFn);
unreachable();
}
u32 idx = id - GX::COLOR0A0;
auto& chan = g_gxState.colorChannelConfig[idx];
chan.lightingEnabled = lightingEnabled;
chan.ambSrc = ambSrc;
chan.matSrc = matSrc;
g_gxState.colorChannelState[idx].lightState = lightState;
}
void GXSetAlphaCompare(GX::Compare comp0, float ref0, GX::AlphaOp op, GX::Compare comp1, float ref1) noexcept {
if (comp0 == GX::ALWAYS && comp1 == GX::ALWAYS) {
g_gxState.alphaDiscard.reset();
} else if (comp0 == GX::GEQUAL && comp1 == GX::NEVER) {
g_gxState.alphaDiscard = ref0;
} else {
Log.report(logvisor::Fatal, FMT_STRING("GXSetAlphaCompare: unknown operands"));
unreachable();
}
}
void GXSetTexCoordGen2(GX::TexCoordID dst, GX::TexGenType type, GX::TexGenSrc src, GX::TexMtx mtx, GXBool normalize,
GX::PTTexMtx postMtx) noexcept {
if (dst < GX::TEXCOORD0 || dst > GX::TEXCOORD7) {
Log.report(logvisor::Fatal, FMT_STRING("invalid tex coord {}"), dst);
unreachable();
}
g_gxState.tcgs[dst] = {type, src, mtx, postMtx, normalize};
}
void GXLoadTexMtxImm(const void* data, u32 id, GX::TexMtxType type) noexcept {
if ((id < GX::TEXMTX0 || id > GX::IDENTITY) && (id < GX::PTTEXMTX0 || id > GX::PTIDENTITY)) {
Log.report(logvisor::Fatal, FMT_STRING("invalid tex mtx {}"), id);
unreachable();
}
if (id >= GX::PTTEXMTX0) {
if (type != GX::MTX3x4) {
Log.report(logvisor::Fatal, FMT_STRING("invalid pt mtx type {}"), type);
unreachable();
}
const auto idx = (id - GX::PTTEXMTX0) / 3;
g_gxState.ptTexMtxs[idx] = *static_cast<const zeus::CTransform*>(data);
} else {
const auto idx = (id - GX::TEXMTX0) / 3;
switch (type) {
case GX::MTX3x4:
g_gxState.texMtxs[idx] = aurora::Mat4x4<float>{*static_cast<const zeus::CTransform*>(data)};
break;
case GX::MTX2x4:
g_gxState.texMtxs[idx] = *static_cast<const aurora::Mat4x2<float>*>(data);
break;
}
}
}
void GXLoadPosMtxImm(const zeus::CTransform& xf, GX::PosNrmMtx id) noexcept {
if (id != GX::PNMTX0) {
Log.report(logvisor::Fatal, FMT_STRING("invalid pn mtx {}"), id);
unreachable();
}
g_gxState.mv = xf.toMatrix4f();
}
void GXLoadNrmMtxImm(const zeus::CTransform& xf, GX::PosNrmMtx id) noexcept {
if (id != GX::PNMTX0) {
Log.report(logvisor::Fatal, FMT_STRING("invalid pn mtx {}"), id);
unreachable();
}
g_gxState.mvInv = xf.toMatrix4f();
}
constexpr zeus::CMatrix4f DepthCorrect{
// clang-format off
1.f, 0.f, 0.f, 0.f,
0.f, 1.f, 0.f, 0.f,
0.f, 0.f, 0.5f, 0.5f,
0.f, 0.f, 0.f, 1.f,
// clang-format on
};
void GXSetProjection(const zeus::CMatrix4f& mtx, GX::ProjectionType type) noexcept {
if (type == GX::PERSPECTIVE) {
g_gxState.proj = DepthCorrect * mtx;
} else {
g_gxState.proj = mtx;
}
}
void GXSetViewport(float left, float top, float width, float height, float nearZ, float farZ) noexcept {
aurora::gfx::set_viewport(left, top, width, height, nearZ, farZ);
}
void GXSetScissor(u32 left, u32 top, u32 width, u32 height) noexcept {
aurora::gfx::set_scissor(left, top, width, height);
}
void GXSetFog(GX::FogType type, float startZ, float endZ, float nearZ, float farZ, const GXColor& color) noexcept {
g_gxState.fog = {type, startZ, endZ, nearZ, farZ, color};
}
void GXSetFogColor(const GXColor& color) noexcept { g_gxState.fog.color = color; }
namespace aurora::gfx {
static logvisor::Module Log("aurora::gfx::gx");
// TODO remove this hack for build_shader
extern std::mutex g_pipelineMutex;
// GX state
void bind_texture(GX::TexMapID id, metaforce::EClampMode clamp, const TextureHandle& tex, float lod) noexcept {
gx::g_gxState.textures[static_cast<size_t>(id)] = {tex, clamp, lod};
}
void unbind_texture(GX::TexMapID id) noexcept { gx::g_gxState.textures[static_cast<size_t>(id)].reset(); }
void load_light(GX::LightID id, const Light& light) noexcept { gx::g_gxState.lights[std::log2<u32>(id)] = light; }
void load_light_ambient(GX::LightID id, const zeus::CColor& ambient) noexcept {
gx::g_gxState.lights[std::log2<u32>(id)] = ambient;
}
namespace gx {
using gpu::g_device;
using gpu::g_graphicsConfig;
GXState g_gxState;
const TextureBind& get_texture(GX::TexMapID id) noexcept { return g_gxState.textures[static_cast<size_t>(id)]; }
static inline wgpu::BlendFactor to_blend_factor(GX::BlendFactor fac) {
switch (fac) {
case GX::BL_ZERO:
return wgpu::BlendFactor::Zero;
case GX::BL_ONE:
return wgpu::BlendFactor::One;
case GX::BL_SRCCLR:
return wgpu::BlendFactor::Src;
case GX::BL_INVSRCCLR:
return wgpu::BlendFactor::OneMinusSrc;
case GX::BL_SRCALPHA:
return wgpu::BlendFactor::SrcAlpha;
case GX::BL_INVSRCALPHA:
return wgpu::BlendFactor::OneMinusSrcAlpha;
case GX::BL_DSTALPHA:
return wgpu::BlendFactor::DstAlpha;
case GX::BL_INVDSTALPHA:
return wgpu::BlendFactor::OneMinusDstAlpha;
case GX::BL_DSTCLR:
return wgpu::BlendFactor::Dst;
case GX::BL_INVDSTCLR:
return wgpu::BlendFactor::OneMinusDst;
default:
Log.report(logvisor::Fatal, FMT_STRING("invalid blend factor {}"), fac);
unreachable();
}
}
static inline wgpu::CompareFunction to_compare_function(GX::Compare func) {
switch (func) {
case GX::NEVER:
return wgpu::CompareFunction::Never;
case GX::LESS:
return wgpu::CompareFunction::Less;
case GX::EQUAL:
return wgpu::CompareFunction::Equal;
case GX::LEQUAL:
return wgpu::CompareFunction::LessEqual;
case GX::GREATER:
return wgpu::CompareFunction::Greater;
case GX::NEQUAL:
return wgpu::CompareFunction::NotEqual;
case GX::GEQUAL:
return wgpu::CompareFunction::GreaterEqual;
case GX::ALWAYS:
return wgpu::CompareFunction::Always;
default:
Log.report(logvisor::Fatal, FMT_STRING("invalid depth fn {}"), func);
unreachable();
}
}
static inline wgpu::BlendState to_blend_state(GX::BlendMode mode, GX::BlendFactor srcFac, GX::BlendFactor dstFac,
std::optional<float> dstAlpha) {
if (mode != GX::BM_BLEND) {
Log.report(logvisor::Fatal, FMT_STRING("How to {}?"), mode);
}
const auto colorBlendComponent = wgpu::BlendComponent{
.operation = wgpu::BlendOperation::Add,
.srcFactor = to_blend_factor(srcFac),
.dstFactor = to_blend_factor(dstFac),
};
auto alphaBlendComponent = colorBlendComponent;
if (dstAlpha) {
alphaBlendComponent = wgpu::BlendComponent{
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::Zero,
.dstFactor = wgpu::BlendFactor::Constant,
};
}
return {
.color = colorBlendComponent,
.alpha = alphaBlendComponent,
};
}
static inline wgpu::ColorWriteMask to_write_mask(bool alphaUpdate) {
auto writeMask = wgpu::ColorWriteMask::Red | wgpu::ColorWriteMask::Green | wgpu::ColorWriteMask::Blue;
if (alphaUpdate) {
writeMask = writeMask | wgpu::ColorWriteMask::Alpha;
}
return writeMask;
}
static inline wgpu::PrimitiveState to_primitive_state(GX::Primitive gx_prim, GX::CullMode gx_cullMode) {
wgpu::PrimitiveTopology primitive = wgpu::PrimitiveTopology::TriangleList;
switch (gx_prim) {
case GX::TRIANGLES:
break;
case GX::TRIANGLESTRIP:
primitive = wgpu::PrimitiveTopology::TriangleStrip;
break;
default:
Log.report(logvisor::Fatal, FMT_STRING("Unsupported primitive type {}"), gx_prim);
unreachable();
}
wgpu::FrontFace frontFace = wgpu::FrontFace::CCW;
wgpu::CullMode cullMode = wgpu::CullMode::None;
switch (gx_cullMode) {
case GX::CULL_FRONT:
frontFace = wgpu::FrontFace::CW;
cullMode = wgpu::CullMode::Front;
break;
case GX::CULL_BACK:
cullMode = wgpu::CullMode::Back;
break;
case GX::CULL_ALL:
Log.report(logvisor::Fatal, FMT_STRING("Unsupported cull mode {}"), gx_cullMode);
unreachable();
default:
break;
}
return {
.topology = primitive,
.frontFace = frontFace,
.cullMode = cullMode,
};
}
wgpu::RenderPipeline build_pipeline(const PipelineConfig& config, const ShaderInfo& info,
ArrayRef<wgpu::VertexBufferLayout> vtxBuffers, wgpu::ShaderModule shader,
zstring_view label) noexcept {
const auto depthStencil = wgpu::DepthStencilState{
.format = g_graphicsConfig.depthFormat,
.depthWriteEnabled = config.depthUpdate,
.depthCompare = to_compare_function(config.depthFunc),
};
const auto blendState = to_blend_state(config.blendMode, config.blendFacSrc, config.blendFacDst, config.dstAlpha);
const std::array colorTargets{wgpu::ColorTargetState{
.format = g_graphicsConfig.colorFormat,
.blend = &blendState,
.writeMask = to_write_mask(config.alphaUpdate),
}};
const auto fragmentState = wgpu::FragmentState{
.module = shader,
.entryPoint = "fs_main",
.targetCount = colorTargets.size(),
.targets = colorTargets.data(),
};
auto layouts = build_bind_group_layouts(info, config.shaderConfig);
const std::array bindGroupLayouts{
std::move(layouts.uniformLayout),
std::move(layouts.samplerLayout),
std::move(layouts.textureLayout),
};
const auto pipelineLayoutDescriptor = wgpu::PipelineLayoutDescriptor{
.label = "GX Pipeline Layout",
.bindGroupLayoutCount = static_cast<uint32_t>(info.sampledTextures.any() ? bindGroupLayouts.size() : 1),
.bindGroupLayouts = bindGroupLayouts.data(),
};
auto pipelineLayout = g_device.CreatePipelineLayout(&pipelineLayoutDescriptor);
const auto descriptor = wgpu::RenderPipelineDescriptor{
.label = label.c_str(),
.layout = std::move(pipelineLayout),
.vertex =
{
.module = std::move(shader),
.entryPoint = "vs_main",
.bufferCount = static_cast<uint32_t>(vtxBuffers.size()),
.buffers = vtxBuffers.data(),
},
.primitive = to_primitive_state(config.primitive, config.cullMode),
.depthStencil = &depthStencil,
.multisample =
wgpu::MultisampleState{
.count = g_graphicsConfig.msaaSamples,
},
.fragment = &fragmentState,
};
return g_device.CreateRenderPipeline(&descriptor);
}
ShaderInfo populate_pipeline_config(PipelineConfig& config, GX::Primitive primitive,
const BindGroupRanges& ranges) noexcept {
for (u8 i = 0; i < g_gxState.numTevStages; ++i) {
config.shaderConfig.tevStages[i] = g_gxState.tevStages[i];
}
for (u8 i = 0; i < g_gxState.numChans; ++i) {
config.shaderConfig.colorChannels[i] = g_gxState.colorChannelConfig[i];
}
for (u8 i = 0; i < g_gxState.numTexGens; ++i) {
config.shaderConfig.tcgs[i] = g_gxState.tcgs[i];
}
config.shaderConfig.alphaDiscard = g_gxState.alphaDiscard;
config.shaderConfig.fogType = g_gxState.fog.type;
config = {
.shaderConfig = config.shaderConfig,
.primitive = primitive,
.depthFunc = g_gxState.depthFunc,
.cullMode = g_gxState.cullMode,
.blendMode = g_gxState.blendMode,
.blendFacSrc = g_gxState.blendFacSrc,
.blendFacDst = g_gxState.blendFacDst,
.blendOp = g_gxState.blendOp,
.dstAlpha = g_gxState.dstAlpha,
.depthCompare = g_gxState.depthCompare,
.depthUpdate = g_gxState.depthUpdate,
.alphaUpdate = g_gxState.alphaUpdate,
};
// TODO separate shader info from build_shader for async
{
std::lock_guard lk{g_pipelineMutex};
auto [_, info] = build_shader(config.shaderConfig);
info.bindGroups = build_bind_groups(info, config.shaderConfig, ranges); // TODO this is hack
return info;
}
}
Range build_uniform(const ShaderInfo& info) noexcept {
auto [buf, range] = map_uniform(info.uniformSize);
{
buf.append(&g_gxState.mv, 64);
buf.append(&g_gxState.mvInv, 64);
buf.append(&g_gxState.proj, 64);
}
for (int i = 0; i < info.usesTevReg.size(); ++i) {
if (!info.usesTevReg.test(i)) {
continue;
}
buf.append(&g_gxState.colorRegs[i], 16);
}
for (int i = 0; i < info.sampledColorChannels.size(); ++i) {
if (!info.sampledColorChannels.test(i)) {
continue;
}
buf.append(&g_gxState.colorChannelState[i].ambColor, 16);
buf.append(&g_gxState.colorChannelState[i].matColor, 16);
if (g_gxState.colorChannelConfig[i].lightingEnabled) {
zeus::CColor ambient = zeus::skClear;
int addedLights = 0;
const auto& lightState = g_gxState.colorChannelState[i].lightState;
for (int li = 0; li < lightState.size(); ++li) {
if (!lightState.test(li)) {
continue;
}
const auto& variant = g_gxState.lights[li];
if (std::holds_alternative<zeus::CColor>(variant)) {
ambient += std::get<zeus::CColor>(variant);
} else if (std::holds_alternative<Light>(variant)) {
static_assert(sizeof(Light) == 80);
buf.append(&std::get<Light>(variant), sizeof(Light));
++addedLights;
}
}
constexpr Light emptyLight{};
for (int li = addedLights; li < GX::MaxLights; ++li) {
buf.append(&emptyLight, sizeof(Light));
}
buf.append(&ambient, 16);
}
}
for (int i = 0; i < info.sampledKColors.size(); ++i) {
if (!info.sampledKColors.test(i)) {
continue;
}
buf.append(&g_gxState.kcolors[i], 16);
}
for (int i = 0; i < info.usesTexMtx.size(); ++i) {
if (!info.usesTexMtx.test(i)) {
continue;
}
switch (info.texMtxTypes[i]) {
case GX::TG_MTX2x4:
if (std::holds_alternative<Mat4x2<float>>(g_gxState.texMtxs[i])) {
buf.append(&std::get<Mat4x2<float>>(g_gxState.texMtxs[i]), 32);
} else {
Log.report(logvisor::Fatal, FMT_STRING("expected 2x4 mtx in idx {}"), i);
unreachable();
}
break;
case GX::TG_MTX3x4:
if (std::holds_alternative<Mat4x4<float>>(g_gxState.texMtxs[i])) {
const auto& mat = std::get<Mat4x4<float>>(g_gxState.texMtxs[i]);
buf.append(&mat, 64);
} else {
// Log.report(logvisor::Fatal, FMT_STRING("expected 3x4 mtx in idx {}"), i);
buf.append(&Mat4x4_Identity, 64);
}
break;
default:
Log.report(logvisor::Fatal, FMT_STRING("unhandled tex mtx type {}"), info.texMtxTypes[i]);
unreachable();
}
}
for (int i = 0; i < info.usesPTTexMtx.size(); ++i) {
if (!info.usesPTTexMtx.test(i)) {
continue;
}
buf.append(&g_gxState.ptTexMtxs[i], 48);
}
if (info.usesFog) {
const auto& state = g_gxState.fog;
struct Fog {
zeus::CColor color = state.color;
float a = 0.f;
float b = 0.5f;
float c = 0.f;
float pad = FLT_MAX;
} fog{};
static_assert(sizeof(Fog) == 32);
if (state.nearZ != state.farZ && state.startZ != state.endZ) {
const float depthRange = state.farZ - state.nearZ;
const float fogRange = state.endZ - state.startZ;
fog.a = (state.farZ * state.nearZ) / (depthRange * fogRange);
fog.b = state.farZ / depthRange;
fog.c = state.startZ / fogRange;
}
buf.append(&fog, 32);
}
for (int i = 0; i < info.sampledTextures.size(); ++i) {
if (!info.sampledTextures.test(i)) {
continue;
}
const auto& tex = get_texture(static_cast<GX::TexMapID>(i));
if (!tex) {
Log.report(logvisor::Fatal, FMT_STRING("unbound texture {}"), i);
unreachable();
}
buf.append(&tex.lod, 4);
}
return range;
}
static absl::flat_hash_map<u32, wgpu::BindGroupLayout> sUniformBindGroupLayouts;
static absl::flat_hash_map<u32, std::pair<wgpu::BindGroupLayout, wgpu::BindGroupLayout>> sTextureBindGroupLayouts;
GXBindGroups build_bind_groups(const ShaderInfo& info, const ShaderConfig& config,
const BindGroupRanges& ranges) noexcept {
const auto layouts = build_bind_group_layouts(info, config);
u32 textureCount = info.sampledTextures.count();
const std::array uniformEntries{
wgpu::BindGroupEntry{
.binding = 0,
.buffer = g_uniformBuffer,
.size = info.uniformSize,
},
// Vertices
wgpu::BindGroupEntry{
.binding = 1,
.buffer = g_storageBuffer,
.size = ranges.vtxDataRange.size,
},
// Normals
wgpu::BindGroupEntry{
.binding = 2,
.buffer = g_storageBuffer,
.size = ranges.nrmDataRange.size,
},
// UVs
wgpu::BindGroupEntry{
.binding = 3,
.buffer = g_storageBuffer,
.size = ranges.tcDataRange.size,
},
// Packed UVs
wgpu::BindGroupEntry{
.binding = 4,
.buffer = g_storageBuffer,
.size = ranges.packedTcDataRange.size,
},
};
std::array<wgpu::BindGroupEntry, MaxTextures> samplerEntries;
std::array<wgpu::BindGroupEntry, MaxTextures> textureEntries;
for (u32 texIdx = 0, i = 0; texIdx < info.sampledTextures.size(); ++texIdx) {
if (!info.sampledTextures.test(texIdx)) {
continue;
}
const auto& tex = g_gxState.textures[texIdx];
if (!tex) {
Log.report(logvisor::Fatal, FMT_STRING("unbound texture {}"), texIdx);
unreachable();
}
samplerEntries[i] = {
.binding = i,
.sampler = sampler_ref(tex.get_descriptor()),
};
textureEntries[i] = {
.binding = i,
.textureView = tex.handle.ref->view,
};
i++;
}
return {
.uniformBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "GX Uniform Bind Group",
.layout = layouts.uniformLayout,
.entryCount = static_cast<uint32_t>(config.denormalizedVertexAttributes ? 1 : uniformEntries.size()),
.entries = uniformEntries.data(),
}),
.samplerBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "GX Sampler Bind Group",
.layout = layouts.samplerLayout,
.entryCount = textureCount,
.entries = samplerEntries.data(),
}),
.textureBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "GX Texture Bind Group",
.layout = layouts.textureLayout,
.entryCount = textureCount,
.entries = textureEntries.data(),
}),
};
}
GXBindGroupLayouts build_bind_group_layouts(const ShaderInfo& info, const ShaderConfig& config) noexcept {
GXBindGroupLayouts out;
u32 uniformSizeKey = info.uniformSize + (config.denormalizedVertexAttributes ? 0 : 1);
const auto uniformIt = sUniformBindGroupLayouts.find(uniformSizeKey);
if (uniformIt != sUniformBindGroupLayouts.end()) {
out.uniformLayout = uniformIt->second;
} else {
const std::array uniformLayoutEntries{
wgpu::BindGroupLayoutEntry{
.binding = 0,
.visibility = wgpu::ShaderStage::Vertex | wgpu::ShaderStage::Fragment,
.buffer =
wgpu::BufferBindingLayout{
.type = wgpu::BufferBindingType::Uniform,
.hasDynamicOffset = true,
.minBindingSize = info.uniformSize,
},
},
wgpu::BindGroupLayoutEntry{
.binding = 1,
.visibility = wgpu::ShaderStage::Vertex,
.buffer =
{
.type = wgpu::BufferBindingType::ReadOnlyStorage,
.hasDynamicOffset = true,
},
},
wgpu::BindGroupLayoutEntry{
.binding = 2,
.visibility = wgpu::ShaderStage::Vertex,
.buffer =
{
.type = wgpu::BufferBindingType::ReadOnlyStorage,
.hasDynamicOffset = true,
},
},
wgpu::BindGroupLayoutEntry{
.binding = 3,
.visibility = wgpu::ShaderStage::Vertex,
.buffer =
{
.type = wgpu::BufferBindingType::ReadOnlyStorage,
.hasDynamicOffset = true,
},
},
wgpu::BindGroupLayoutEntry{
.binding = 4,
.visibility = wgpu::ShaderStage::Vertex,
.buffer =
{
.type = wgpu::BufferBindingType::ReadOnlyStorage,
.hasDynamicOffset = true,
},
},
};
const auto uniformLayoutDescriptor = wgpu::BindGroupLayoutDescriptor{
.label = "GX Uniform Bind Group Layout",
.entryCount = static_cast<uint32_t>(config.denormalizedVertexAttributes ? 1 : uniformLayoutEntries.size()),
.entries = uniformLayoutEntries.data(),
};
out.uniformLayout = g_device.CreateBindGroupLayout(&uniformLayoutDescriptor);
sUniformBindGroupLayouts.try_emplace(uniformSizeKey, out.uniformLayout);
}
u32 textureCount = info.sampledTextures.count();
const auto textureIt = sTextureBindGroupLayouts.find(textureCount);
if (textureIt != sTextureBindGroupLayouts.end()) {
const auto& [sl, tl] = textureIt->second;
out.samplerLayout = sl;
out.textureLayout = tl;
} else {
std::array<wgpu::BindGroupLayoutEntry, MaxTextures> samplerEntries;
std::array<wgpu::BindGroupLayoutEntry, MaxTextures> textureEntries;
for (u32 i = 0; i < textureCount; ++i) {
samplerEntries[i] = {
.binding = i,
.visibility = wgpu::ShaderStage::Fragment,
.sampler = {.type = wgpu::SamplerBindingType::Filtering},
};
textureEntries[i] = {
.binding = i,
.visibility = wgpu::ShaderStage::Fragment,
.texture =
{
.sampleType = wgpu::TextureSampleType::Float,
.viewDimension = wgpu::TextureViewDimension::e2D,
},
};
}
{
const wgpu::BindGroupLayoutDescriptor descriptor{
.label = "GX Sampler Bind Group",
.entryCount = textureCount,
.entries = samplerEntries.data(),
};
out.samplerLayout = g_device.CreateBindGroupLayout(&descriptor);
}
{
const wgpu::BindGroupLayoutDescriptor descriptor{
.label = "GX Texture Bind Group",
.entryCount = textureCount,
.entries = textureEntries.data(),
};
out.textureLayout = g_device.CreateBindGroupLayout(&descriptor);
}
sTextureBindGroupLayouts.try_emplace(textureCount, out.samplerLayout, out.textureLayout);
}
return out;
}
// TODO this is awkward
extern absl::flat_hash_map<ShaderRef, std::pair<wgpu::ShaderModule, gx::ShaderInfo>> g_gxCachedShaders;
void shutdown() noexcept {
// TODO we should probably store this all in g_state.gx instead
sUniformBindGroupLayouts.clear();
sTextureBindGroupLayouts.clear();
g_gxState.textures.fill({});
g_gxCachedShaders.clear();
}
wgpu::SamplerDescriptor TextureBind::get_descriptor() const noexcept {
wgpu::AddressMode mode;
switch (clampMode) {
case metaforce::EClampMode::Clamp:
mode = wgpu::AddressMode::ClampToEdge;
break;
case metaforce::EClampMode::Repeat:
mode = wgpu::AddressMode::Repeat;
break;
case metaforce::EClampMode::Mirror:
mode = wgpu::AddressMode::MirrorRepeat;
break;
}
return {
.label = "Generated Sampler",
.addressModeU = mode,
.addressModeV = mode,
.addressModeW = mode,
// TODO logic from CTexture?
.magFilter = wgpu::FilterMode::Linear,
.minFilter = wgpu::FilterMode::Linear,
.mipmapFilter = wgpu::FilterMode::Linear,
.maxAnisotropy = g_graphicsConfig.textureAnistropy,
};
}
} // namespace gx
} // namespace aurora::gfx
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