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aurora/lib/gfx/gx.cpp

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#include "gx.hpp"
#include "../webgpu/gpu.hpp"
#include "../window.hpp"
#include "../internal.hpp"
#include "common.hpp"
#include <absl/container/flat_hash_map.h>
#include <cfloat>
#include <cmath>
using aurora::gfx::gx::g_gxState;
static aurora::Module Log("aurora::gx");
namespace aurora::gfx {
static Module Log("aurora::gfx::gx");
namespace gx {
using webgpu::g_device;
using webgpu::g_graphicsConfig;
GXState g_gxState{};
const TextureBind& get_texture(GXTexMapID id) noexcept { return g_gxState.textures[static_cast<size_t>(id)]; }
static inline wgpu::BlendFactor to_blend_factor(GXBlendFactor fac, bool isDst) {
switch (fac) {
case GX_BL_ZERO:
return wgpu::BlendFactor::Zero;
case GX_BL_ONE:
return wgpu::BlendFactor::One;
case GX_BL_SRCCLR: // + GX_BL_DSTCLR
if (isDst) {
return wgpu::BlendFactor::Src;
} else {
return wgpu::BlendFactor::Dst;
}
case GX_BL_INVSRCCLR: // + GX_BL_INVDSTCLR
if (isDst) {
return wgpu::BlendFactor::OneMinusSrc;
} else {
return wgpu::BlendFactor::OneMinusDst;
}
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;
default:
Log.report(LOG_FATAL, FMT_STRING("invalid blend factor {}"), fac);
unreachable();
}
}
static inline wgpu::CompareFunction to_compare_function(GXCompare 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(LOG_FATAL, FMT_STRING("invalid depth fn {}"), func);
unreachable();
}
}
static inline wgpu::BlendState to_blend_state(GXBlendMode mode, GXBlendFactor srcFac, GXBlendFactor dstFac,
GXLogicOp op, u32 dstAlpha) {
wgpu::BlendComponent colorBlendComponent;
switch (mode) {
case GX_BM_NONE:
colorBlendComponent = {
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::One,
.dstFactor = wgpu::BlendFactor::Zero,
};
break;
case GX_BM_BLEND:
colorBlendComponent = {
.operation = wgpu::BlendOperation::Add,
.srcFactor = to_blend_factor(srcFac, false),
.dstFactor = to_blend_factor(dstFac, true),
};
break;
case GX_BM_SUBTRACT:
colorBlendComponent = {
.operation = wgpu::BlendOperation::ReverseSubtract,
.srcFactor = wgpu::BlendFactor::One,
.dstFactor = wgpu::BlendFactor::One,
};
break;
case GX_BM_LOGIC:
switch (op) {
case GX_LO_CLEAR:
colorBlendComponent = {
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::Zero,
.dstFactor = wgpu::BlendFactor::Zero,
};
break;
case GX_LO_COPY:
colorBlendComponent = {
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::One,
.dstFactor = wgpu::BlendFactor::Zero,
};
break;
case GX_LO_NOOP:
colorBlendComponent = {
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::Zero,
.dstFactor = wgpu::BlendFactor::One,
};
break;
default:
Log.report(LOG_FATAL, FMT_STRING("unsupported logic op {}"), op);
unreachable();
}
break;
default:
Log.report(LOG_FATAL, FMT_STRING("unsupported blend mode {}"), mode);
unreachable();
}
wgpu::BlendComponent alphaBlendComponent{
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::One,
.dstFactor = wgpu::BlendFactor::Zero,
};
if (dstAlpha != UINT32_MAX) {
alphaBlendComponent = wgpu::BlendComponent{
.operation = wgpu::BlendOperation::Add,
.srcFactor = wgpu::BlendFactor::Constant,
.dstFactor = wgpu::BlendFactor::Zero,
};
}
return {
.color = colorBlendComponent,
.alpha = alphaBlendComponent,
};
}
static inline wgpu::ColorWriteMask to_write_mask(bool colorUpdate, bool alphaUpdate) {
wgpu::ColorWriteMask writeMask = wgpu::ColorWriteMask::None;
if (colorUpdate) {
writeMask |= wgpu::ColorWriteMask::Red | wgpu::ColorWriteMask::Green | wgpu::ColorWriteMask::Blue;
}
if (alphaUpdate) {
writeMask |= wgpu::ColorWriteMask::Alpha;
}
return writeMask;
}
static inline wgpu::PrimitiveState to_primitive_state(GXPrimitive gx_prim, GXCullMode 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(LOG_FATAL, FMT_STRING("Unsupported primitive type {}"), gx_prim);
unreachable();
}
wgpu::CullMode cullMode = wgpu::CullMode::None;
switch (gx_cullMode) {
case GX_CULL_FRONT:
cullMode = wgpu::CullMode::Front;
break;
case GX_CULL_BACK:
cullMode = wgpu::CullMode::Back;
break;
case GX_CULL_NONE:
break;
default:
Log.report(LOG_FATAL, FMT_STRING("Unsupported cull mode {}"), gx_cullMode);
unreachable();
}
return {
.topology = primitive,
.frontFace = wgpu::FrontFace::CW,
.cullMode = cullMode,
};
}
wgpu::RenderPipeline build_pipeline(const PipelineConfig& config, const ShaderInfo& info,
ArrayRef<wgpu::VertexBufferLayout> vtxBuffers, wgpu::ShaderModule shader,
const char* label) noexcept {
const wgpu::DepthStencilState depthStencil{
.format = g_graphicsConfig.depthFormat,
.depthWriteEnabled = config.depthUpdate,
.depthCompare = to_compare_function(config.depthFunc),
.stencilFront =
wgpu::StencilFaceState{
.compare = wgpu::CompareFunction::Always,
},
.stencilBack =
wgpu::StencilFaceState{
.compare = wgpu::CompareFunction::Always,
},
};
const auto blendState =
to_blend_state(config.blendMode, config.blendFacSrc, config.blendFacDst, config.blendOp, config.dstAlpha);
const std::array colorTargets{wgpu::ColorTargetState{
.format = g_graphicsConfig.swapChainDescriptor.format,
.blend = &blendState,
.writeMask = to_write_mask(config.colorUpdate, config.alphaUpdate),
}};
const wgpu::FragmentState 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{
layouts.uniformLayout,
layouts.samplerLayout,
layouts.textureLayout,
};
const wgpu::PipelineLayoutDescriptor 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 wgpu::RenderPipelineDescriptor descriptor{
.label = label,
.layout = pipelineLayout,
.vertex =
{
.module = 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,
.mask = UINT32_MAX,
},
.fragment = &fragmentState,
};
return g_device.CreateRenderPipeline(&descriptor);
}
void populate_pipeline_config(PipelineConfig& config, GXPrimitive primitive) noexcept {
config.shaderConfig.fogType = g_gxState.fog.type;
config.shaderConfig.vtxAttrs = g_gxState.vtxDesc;
int lastIndexedAttr = -1;
for (int i = 0; i < GX_VA_MAX_ATTR; ++i) {
const auto type = g_gxState.vtxDesc[i];
if (type != GX_INDEX8 && type != GX_INDEX16) {
config.shaderConfig.attrMapping[i] = GX_VA_NULL;
continue;
}
const auto& array = g_gxState.arrays[i];
if (lastIndexedAttr >= 0 && array == g_gxState.arrays[lastIndexedAttr]) {
// Map attribute to previous attribute
config.shaderConfig.attrMapping[i] = config.shaderConfig.attrMapping[lastIndexedAttr];
} else {
// Map attribute to its own storage
config.shaderConfig.attrMapping[i] = static_cast<GXAttr>(i);
}
lastIndexedAttr = i;
}
config.shaderConfig.tevSwapTable = g_gxState.tevSwapTable;
for (u8 i = 0; i < g_gxState.numTevStages; ++i) {
config.shaderConfig.tevStages[i] = g_gxState.tevStages[i];
}
config.shaderConfig.tevStageCount = g_gxState.numTevStages;
for (u8 i = 0; i < g_gxState.numChans * 2; ++i) {
const auto& cc = g_gxState.colorChannelConfig[i];
if (cc.lightingEnabled) {
config.shaderConfig.colorChannels[i] = cc;
} else {
// Only matSrc matters when lighting disabled
config.shaderConfig.colorChannels[i] = {
.matSrc = cc.matSrc,
};
}
}
for (u8 i = 0; i < g_gxState.numTexGens; ++i) {
config.shaderConfig.tcgs[i] = g_gxState.tcgs[i];
}
if (g_gxState.alphaCompare) {
config.shaderConfig.alphaCompare = g_gxState.alphaCompare;
}
config.shaderConfig.indexedAttributeCount =
std::count_if(config.shaderConfig.vtxAttrs.begin(), config.shaderConfig.vtxAttrs.end(),
[](const auto type) { return type == GX_INDEX8 || type == GX_INDEX16; });
for (u8 i = 0; i < MaxTextures; ++i) {
const auto& bind = g_gxState.textures[i];
TextureConfig texConfig{};
if (bind.texObj.ref) {
if (requires_copy_conversion(bind.texObj)) {
texConfig.copyFmt = bind.texObj.ref->gxFormat;
}
if (requires_load_conversion(bind.texObj)) {
texConfig.loadFmt = bind.texObj.fmt;
}
texConfig.renderTex = bind.texObj.ref->isRenderTexture;
}
config.shaderConfig.textureConfig[i] = texConfig;
}
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,
.colorUpdate = g_gxState.colorUpdate,
};
}
Range build_uniform(const ShaderInfo& info) noexcept {
auto [buf, range] = map_uniform(info.uniformSize);
{
buf.append(&g_gxState.pnMtx[g_gxState.currentPnMtx], 128);
buf.append(&g_gxState.proj, 64);
}
for (int i = 0; i < info.loadsTevReg.size(); ++i) {
if (!info.loadsTevReg.test(i)) {
continue;
}
buf.append(&g_gxState.colorRegs[i], 16);
}
bool lightingEnabled = false;
for (int i = 0; i < info.sampledColorChannels.size(); ++i) {
if (!info.sampledColorChannels.test(i)) {
continue;
}
const auto& ccc = g_gxState.colorChannelConfig[i * 2];
const auto& ccca = g_gxState.colorChannelConfig[i * 2 + 1];
if (ccc.lightingEnabled || ccca.lightingEnabled) {
lightingEnabled = true;
break;
}
}
if (lightingEnabled) {
// Lights
static_assert(sizeof(g_gxState.lights) == 80 * GX::MaxLights);
buf.append(&g_gxState.lights, 80 * GX::MaxLights);
// Light state for all channels
for (int i = 0; i < 4; ++i) {
u32 lightState = g_gxState.colorChannelState[i].lightMask.to_ulong();
buf.append(&lightState, 4);
}
}
for (int i = 0; i < info.sampledColorChannels.size(); ++i) {
if (!info.sampledColorChannels.test(i)) {
continue;
}
const auto& ccc = g_gxState.colorChannelConfig[i * 2];
const auto& ccs = g_gxState.colorChannelState[i * 2];
if (ccc.lightingEnabled && ccc.ambSrc == GX_SRC_REG) {
buf.append(&ccs.ambColor, 16);
}
if (ccc.matSrc == GX_SRC_REG) {
buf.append(&ccs.matColor, 16);
}
const auto& ccca = g_gxState.colorChannelConfig[i * 2 + 1];
const auto& ccsa = g_gxState.colorChannelState[i * 2 + 1];
if (ccca.lightingEnabled && ccca.ambSrc == GX_SRC_REG) {
buf.append(&ccsa.ambColor, 16);
}
if (ccca.matSrc == GX_SRC_REG) {
buf.append(&ccsa.matColor, 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;
}
const auto& state = g_gxState;
switch (info.texMtxTypes[i]) {
case GX_TG_MTX2x4:
if (std::holds_alternative<Mat4x2<float>>(state.texMtxs[i])) {
buf.append(&std::get<Mat4x2<float>>(state.texMtxs[i]), 32);
} else if (std::holds_alternative<Mat4x4<float>>(g_gxState.texMtxs[i])) {
// TODO: SMB hits this?
Mat4x2<float> mtx{
{1.f, 0.f},
{0.f, 1.f},
{0.f, 0.f},
{0.f, 0.f},
};
buf.append(&mtx, 32);
} else {
Log.report(LOG_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(LOG_FATAL, FMT_STRING("expected 3x4 mtx in idx {}"), i);
buf.append(&Mat4x4_Identity, 64);
}
break;
default:
Log.report(LOG_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], 64);
}
if (info.usesFog) {
const auto& state = g_gxState.fog;
struct Fog {
Vec4<float> 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<GXTexMapID>(i));
if (!tex) {
Log.report(LOG_FATAL, FMT_STRING("unbound texture {}"), i);
unreachable();
}
buf.append(&tex.texObj.lodBias, 4);
}
g_gxState.stateDirty = false;
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);
std::array<wgpu::BindGroupEntry, GX_VA_MAX_ATTR + 1> uniformEntries{
wgpu::BindGroupEntry{
.binding = 0,
.buffer = g_uniformBuffer,
.size = info.uniformSize,
},
};
u32 uniformBindIdx = 1;
for (u32 i = 0; i < GX_VA_MAX_ATTR; ++i) {
const Range& range = ranges.vaRanges[i];
if (range.size <= 0) {
continue;
}
uniformEntries[uniformBindIdx] = wgpu::BindGroupEntry{
.binding = uniformBindIdx,
.buffer = g_storageBuffer,
.size = range.size,
};
++uniformBindIdx;
}
std::array<wgpu::BindGroupEntry, MaxTextures> samplerEntries;
std::array<wgpu::BindGroupEntry, MaxTextures * 2> textureEntries;
u32 samplerCount = 0;
u32 textureCount = 0;
for (u32 i = 0; i < info.sampledTextures.size(); ++i) {
if (!info.sampledTextures.test(i)) {
continue;
}
const auto& tex = g_gxState.textures[i];
if (!tex) {
Log.report(LOG_FATAL, FMT_STRING("unbound texture {}"), i);
unreachable();
}
samplerEntries[samplerCount] = {
.binding = samplerCount,
.sampler = sampler_ref(tex.get_descriptor()),
};
++samplerCount;
textureEntries[textureCount] = {
.binding = textureCount,
.textureView = tex.texObj.ref->view,
};
++textureCount;
// Load palette
const auto& texConfig = config.textureConfig[i];
if (is_palette_format(texConfig.loadFmt)) {
u32 tlut = tex.texObj.tlut;
if (tlut < GX_TLUT0 || tlut > GX_TLUT7) {
Log.report(LOG_FATAL, FMT_STRING("tlut out of bounds {}"), tlut);
unreachable();
} else if (!g_gxState.tluts[tlut].ref) {
Log.report(LOG_FATAL, FMT_STRING("tlut unbound {}"), tlut);
unreachable();
}
textureEntries[textureCount] = {
.binding = textureCount,
.textureView = g_gxState.tluts[tlut].ref->view,
};
++textureCount;
}
}
return {
.uniformBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "GX Uniform Bind Group",
.layout = layouts.uniformLayout,
.entryCount = uniformBindIdx,
.entries = uniformEntries.data(),
}),
.samplerBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "GX Sampler Bind Group",
.layout = layouts.samplerLayout,
.entryCount = samplerCount,
.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.indexedAttributeCount > 0 ? 1 : 0);
const auto uniformIt = sUniformBindGroupLayouts.find(uniformSizeKey);
if (uniformIt != sUniformBindGroupLayouts.end()) {
out.uniformLayout = uniformIt->second;
} else {
std::array<wgpu::BindGroupLayoutEntry, GX_VA_MAX_ATTR + 1> uniformLayoutEntries{
wgpu::BindGroupLayoutEntry{
.binding = 0,
.visibility = wgpu::ShaderStage::Vertex | wgpu::ShaderStage::Fragment,
.buffer =
wgpu::BufferBindingLayout{
.type = wgpu::BufferBindingType::Uniform,
.hasDynamicOffset = true,
.minBindingSize = info.uniformSize,
},
},
};
u32 bindIdx = 1;
for (int i = 0; i < GX_VA_MAX_ATTR; ++i) {
if (config.attrMapping[i] == static_cast<GXAttr>(i)) {
uniformLayoutEntries[bindIdx] = wgpu::BindGroupLayoutEntry{
.binding = bindIdx,
.visibility = wgpu::ShaderStage::Vertex,
.buffer =
wgpu::BufferBindingLayout{
.type = wgpu::BufferBindingType::ReadOnlyStorage,
.hasDynamicOffset = true,
},
};
++bindIdx;
}
}
const auto uniformLayoutDescriptor = wgpu::BindGroupLayoutDescriptor{
.label = "GX Uniform Bind Group Layout",
.entryCount = bindIdx,
.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 {
u32 numSamplers = 0;
u32 numTextures = 0;
std::array<wgpu::BindGroupLayoutEntry, MaxTextures> samplerEntries;
std::array<wgpu::BindGroupLayoutEntry, MaxTextures * 2> textureEntries;
for (u32 i = 0; i < info.sampledTextures.size(); ++i) {
if (!info.sampledTextures.test(i)) {
continue;
}
const auto& texConfig = config.textureConfig[i];
bool copyAsPalette = is_palette_format(texConfig.copyFmt);
bool loadAsPalette = is_palette_format(texConfig.loadFmt);
samplerEntries[numSamplers] = {
.binding = numSamplers,
.visibility = wgpu::ShaderStage::Fragment,
.sampler = {.type = copyAsPalette && loadAsPalette ? wgpu::SamplerBindingType::NonFiltering
: wgpu::SamplerBindingType::Filtering},
};
++numSamplers;
if (loadAsPalette) {
textureEntries[numTextures] = {
.binding = numTextures,
.visibility = wgpu::ShaderStage::Fragment,
.texture =
{
.sampleType = copyAsPalette ? wgpu::TextureSampleType::Sint : wgpu::TextureSampleType::Float,
.viewDimension = wgpu::TextureViewDimension::e2D,
},
};
++numTextures;
textureEntries[numTextures] = {
.binding = numTextures,
.visibility = wgpu::ShaderStage::Fragment,
.texture =
{
.sampleType = wgpu::TextureSampleType::Float,
.viewDimension = wgpu::TextureViewDimension::e2D,
},
};
++numTextures;
} else {
textureEntries[numTextures] = {
.binding = numTextures,
.visibility = wgpu::ShaderStage::Fragment,
.texture =
{
.sampleType = wgpu::TextureSampleType::Float,
.viewDimension = wgpu::TextureViewDimension::e2D,
},
};
++numTextures;
}
}
{
const wgpu::BindGroupLayoutDescriptor descriptor{
.label = "GX Sampler Bind Group Layout",
.entryCount = numSamplers,
.entries = samplerEntries.data(),
};
out.samplerLayout = g_device.CreateBindGroupLayout(&descriptor);
}
{
const wgpu::BindGroupLayoutDescriptor descriptor{
.label = "GX Texture Bind Group Layout",
.entryCount = numTextures,
.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();
for (auto& item : g_gxState.textures) {
item.texObj.ref.reset();
}
for (auto& item : g_gxState.tluts) {
item.ref.reset();
}
g_gxCachedShaders.clear();
}
} // namespace gx
static wgpu::AddressMode wgpu_address_mode(GXTexWrapMode mode) {
switch (mode) {
case GX_CLAMP:
return wgpu::AddressMode::ClampToEdge;
case GX_REPEAT:
return wgpu::AddressMode::Repeat;
case GX_MIRROR:
return wgpu::AddressMode::MirrorRepeat;
default:
Log.report(LOG_FATAL, FMT_STRING("invalid wrap mode {}"), mode);
unreachable();
}
}
static std::pair<wgpu::FilterMode, wgpu::FilterMode> wgpu_filter_mode(GXTexFilter filter) {
switch (filter) {
case GX_NEAR:
return {wgpu::FilterMode::Nearest, wgpu::FilterMode::Linear};
case GX_LINEAR:
return {wgpu::FilterMode::Linear, wgpu::FilterMode::Linear};
case GX_NEAR_MIP_NEAR:
return {wgpu::FilterMode::Nearest, wgpu::FilterMode::Nearest};
case GX_LIN_MIP_NEAR:
return {wgpu::FilterMode::Linear, wgpu::FilterMode::Nearest};
case GX_NEAR_MIP_LIN:
return {wgpu::FilterMode::Nearest, wgpu::FilterMode::Linear};
case GX_LIN_MIP_LIN:
return {wgpu::FilterMode::Linear, wgpu::FilterMode::Linear};
default:
Log.report(LOG_FATAL, FMT_STRING("invalid filter mode {}"), filter);
unreachable();
}
}
static u16 wgpu_aniso(GXAnisotropy aniso) {
switch (aniso) {
case GX_ANISO_1:
return 1;
case GX_ANISO_2:
return std::max<u16>(webgpu::g_graphicsConfig.textureAnisotropy / 2, 1);
case GX_ANISO_4:
return std::max<u16>(webgpu::g_graphicsConfig.textureAnisotropy, 1);
default:
Log.report(LOG_FATAL, FMT_STRING("invalid aniso mode {}"), aniso);
unreachable();
}
}
wgpu::SamplerDescriptor TextureBind::get_descriptor() const noexcept {
if (gx::requires_copy_conversion(texObj) && gx::is_palette_format(texObj.ref->gxFormat)) {
return {
.label = "Generated Non-Filtering Sampler",
.addressModeU = wgpu_address_mode(texObj.wrapS),
.addressModeV = wgpu_address_mode(texObj.wrapT),
.addressModeW = wgpu::AddressMode::Repeat,
.magFilter = wgpu::FilterMode::Nearest,
.minFilter = wgpu::FilterMode::Nearest,
.mipmapFilter = wgpu::FilterMode::Nearest,
.lodMinClamp = 0.f,
.lodMaxClamp = 1000.f,
.maxAnisotropy = 1,
};
}
const auto [minFilter, mipFilter] = wgpu_filter_mode(texObj.minFilter);
const auto [magFilter, _] = wgpu_filter_mode(texObj.magFilter);
return {
.label = "Generated Filtering Sampler",
.addressModeU = wgpu_address_mode(texObj.wrapS),
.addressModeV = wgpu_address_mode(texObj.wrapT),
.addressModeW = wgpu::AddressMode::Repeat,
.magFilter = magFilter,
.minFilter = minFilter,
.mipmapFilter = mipFilter,
.lodMinClamp = 0.f,
.lodMaxClamp = 1000.f,
.maxAnisotropy = wgpu_aniso(texObj.maxAniso),
};
}
} // namespace aurora::gfx
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