aurora: Working palette textures

Runtime/Graphics/GX.hpp

@@ -748,10 +748,11 @@ enum GXTlutFmt {
   GX_MAX_TLUTFMT = 0x3,
 };
 
+namespace aurora::gfx {
+struct TextureRef;
+} // namespace aurora::gfx
 struct GXTlutObj {
-  u32 format;
+  std::shared_ptr<aurora::gfx::TextureRef> ref;
-  u32 addr;
-  u16 entries;
 };
 
 enum GXTlut {
@@ -806,12 +807,9 @@ enum GXCITexFmt {
   GX_TF_C14X2 = GX::TF_C14X2,
 };
 
-namespace aurora::gfx {
-struct TextureRef;
-} // namespace aurora::gfx
 struct GXTexObj {
   std::shared_ptr<aurora::gfx::TextureRef> ref;
-  void* data;
+  const void* data;
   u32 dataSize;
   u16 width;
   u16 height;
@@ -894,12 +892,13 @@ void GXSetTevSwapModeTable(GX::TevSwapSel id, GX::TevColorChan red, GX::TevColor
                            GX::TevColorChan alpha) noexcept;
 void GXSetTevSwapMode(GX::TevStageID stage, GX::TevSwapSel rasSel, GX::TevSwapSel texSel) noexcept;
 void GXSetLineWidth(u8 width, GX::TexOffset texOffset) noexcept;
-void GXInitTlutObj(GXTlutObj* obj, void* data, GXTlutFmt format, u16 entries) noexcept;
+void GXInitTlutObj(GXTlutObj* obj, const void* data, GXTlutFmt format, u16 entries) noexcept;
 void GXLoadTlut(const GXTlutObj* obj, GXTlut idx) noexcept;
-void GXInitTexObj(GXTexObj* obj, void* data, u16 width, u16 height, GX::TextureFormat format, GXTexWrapMode wrapS,
+void GXInitTexObj(GXTexObj* obj, const void* data, u16 width, u16 height, GX::TextureFormat format, GXTexWrapMode wrapS,
                   GXTexWrapMode wrapT, GXBool mipmap) noexcept;
 // Addition for binding render textures
-void GXInitTexObjResolved(GXTexObj* obj, u32 bindIdx, GX::TextureFormat format, GXTexWrapMode wrapS, GXTexWrapMode wrapT);
+void GXInitTexObjResolved(GXTexObj* obj, u32 bindIdx, GX::TextureFormat format, GXTexWrapMode wrapS,
+                          GXTexWrapMode wrapT);
 void GXInitTexObjLOD(GXTexObj* obj, GXTexFilter minFilt, GXTexFilter magFilt, float minLod, float maxLod, float lodBias,
                      GXBool biasClamp, GXBool doEdgeLod, GXAnisotropy maxAniso) noexcept;
 void GXInitTexObjCI(GXTexObj* obj, void* data, u16 width, u16 height, GXCITexFmt format, GXTexWrapMode wrapS,

Runtime/GuiSys/CRasterFont.cpp

@@ -155,10 +155,10 @@ void CRasterFont::DrawString(const CDrawStringOptions& opts, int x, int y, int&
   if (renderBuf != nullptr) {
     CGraphicsPalette pal(EPaletteFormat::RGB5A3, 4);
     pal.Lock();
-    *reinterpret_cast<u16*>(pal.GetPaletteData() + 0) = SBIG(zeus::CColor(0.f, 0.f, 0.f, 0.f).toRGB5A3());
+    *reinterpret_cast<u16*>(pal.GetPaletteData() + 0) = bswap16(zeus::CColor(0.f, 0.f, 0.f, 0.f).toRGB5A3());
-    *reinterpret_cast<u16*>(pal.GetPaletteData() + 2) = SBIG(opts.x4_colors[0].toRGB5A3());
+    *reinterpret_cast<u16*>(pal.GetPaletteData() + 2) = bswap16(opts.x4_colors[0].toRGB5A3());
-    *reinterpret_cast<u16*>(pal.GetPaletteData() + 4) = SBIG(opts.x4_colors[1].toRGB5A3());
+    *reinterpret_cast<u16*>(pal.GetPaletteData() + 4) = bswap16(opts.x4_colors[1].toRGB5A3());
-    *reinterpret_cast<u16*>(pal.GetPaletteData() + 6) = SBIG(zeus::CColor(0.f, 0.f, 0.f, 0.f).toRGB5A3());
+    *reinterpret_cast<u16*>(pal.GetPaletteData() + 6) = bswap16(zeus::CColor(0.f, 0.f, 0.f, 0.f).toRGB5A3());
     pal.UnLock();
     renderBuf->AddPaletteChange(pal);
   }

Runtime/GuiSys/CTextRenderBuffer.cpp

@@ -102,11 +102,6 @@ u32 CTextRenderBuffer::GetCurLen() {
 }
 
 void CTextRenderBuffer::Render(const zeus::CColor& color, float time) {
-  static const GX::VtxDescList skVtxDesc[3]{
-      {GX::VA_POS, GX::DIRECT},
-      {GX::VA_TEX0, GX::DIRECT},
-      {GX::VA_NULL, GX::NONE},
-  };
   x4c_activeFont = -1;
   x4d_activePalette = -1;
   CMemoryInStream in(x34_bytecode.data(), x44_blobSize);
@@ -127,8 +122,8 @@ void CTextRenderBuffer::Render(const zeus::CColor& color, float time) {
         x4f_queuedPalette = -1;
       }
 
-      u16 offX = in.ReadShort();
+      s16 offX = in.ReadShort();
-      u16 offY = in.ReadShort();
+      s16 offY = in.ReadShort();
       char16_t chr = in.ReadShort();
       zeus::CColor chrColor(static_cast<zeus::Comp32>(in.ReadLong()));
       if (x4c_activeFont != -1) {
@@ -151,8 +146,8 @@ void CTextRenderBuffer::Render(const zeus::CColor& color, float time) {
         }
       }
     } else if (cmd == Command::ImageRender) {
-      u16 offX = in.ReadShort();
+      s16 offX = in.ReadShort();
-      u16 offY = in.ReadShort();
+      s16 offY = in.ReadShort();
       u8 imageIdx = in.ReadChar();
       zeus::CColor imageColor(static_cast<zeus::Comp32>(in.ReadLong()));
       auto imageDef = x14_images[imageIdx];
@@ -169,7 +164,12 @@ void CTextRenderBuffer::Render(const zeus::CColor& color, float time) {
         CGX::SetTevColorIn(GX::TEVSTAGE0, GX::CC_ZERO, GX::CC_TEXC, GX::CC_KONST, GX::CC_ZERO);
         CGX::SetTevAlphaIn(GX::TEVSTAGE0, GX::CA_ZERO, GX::CA_TEXA, GX::CA_KONST, GX::CA_ZERO);
         CGX::SetStandardTevColorAlphaOp(GX::TEVSTAGE0);
-        CGX::SetVtxDescv(skVtxDesc);
+        constexpr std::array skVtxDesc{
+            GX::VtxDescList{GX::VA_POS, GX::DIRECT},
+            GX::VtxDescList{GX::VA_TEX0, GX::DIRECT},
+            GX::VtxDescList{},
+        };
+        CGX::SetVtxDescv(skVtxDesc.data());
         CGX::SetNumChans(0);
         CGX::SetNumTexGens(1);
         CGX::SetNumTevStages(1);

aurora/lib/gfx/gx.cpp

@@ -493,7 +493,7 @@ void GXSetIndTexMtx(GX::IndTexMtxID id, const void* mtx, s8 scaleExp) noexcept {
   g_gxState.indTexMtxs[id - 1] = {*static_cast<const aurora::Mat3x2<float>*>(mtx), scaleExp};
 }
 
-void GXInitTexObj(GXTexObj* obj, void* data, u16 width, u16 height, GX::TextureFormat format, GXTexWrapMode wrapS,
+void GXInitTexObj(GXTexObj* obj, const void* data, u16 width, u16 height, GX::TextureFormat format, GXTexWrapMode wrapS,
                   GXTexWrapMode wrapT, GXBool mipmap) noexcept {
   obj->data = data;
   obj->width = width;
@@ -550,7 +550,24 @@ void GXInitTexObjLOD(GXTexObj* obj, GXTexFilter minFilt, GXTexFilter magFilt, fl
 }
 void GXInitTexObjCI(GXTexObj* obj, void* data, u16 width, u16 height, GXCITexFmt format, GXTexWrapMode wrapS,
                     GXTexWrapMode wrapT, GXBool mipmap, u32 tlut) noexcept {
-  // TODO
+  obj->data = data;
+  obj->width = width;
+  obj->height = height;
+  obj->fmt = static_cast<GX::TextureFormat>(format);
+  obj->wrapS = wrapS;
+  obj->wrapT = wrapT;
+  obj->hasMips = mipmap;
+  obj->tlut = static_cast<GXTlut>(tlut);
+  // TODO default values?
+  obj->minFilter = GX_LINEAR;
+  obj->magFilter = GX_LINEAR;
+  obj->minLod = 0.f;
+  obj->maxLod = 0.f;
+  obj->lodBias = 0.f;
+  obj->biasClamp = false;
+  obj->doEdgeLod = false;
+  obj->maxAniso = GX_ANISO_4;
+  obj->dataInvalidated = true;
 }
 void GXInitTexObjData(GXTexObj* obj, void* data) noexcept {
   obj->data = data;
@@ -573,12 +590,27 @@ void GXLoadTexObj(GXTexObj* obj, GX::TexMapID id) noexcept {
   g_gxState.textures[id] = {*obj};
 }
 
-void GXInitTlutObj(GXTlutObj* obj, void* data, GXTlutFmt format, u16 entries) noexcept {
+void GXInitTlutObj(GXTlutObj* obj, const void* data, GXTlutFmt format, u16 entries) noexcept {
-  // TODO
+  GX::TextureFormat texFmt;
+  switch (format) {
+  case GX_TL_IA8:
+    texFmt = GX::TF_IA8;
+    break;
+  case GX_TL_RGB565:
+    texFmt = GX::TF_RGB565;
+    break;
+  case GX_TL_RGB5A3:
+    texFmt = GX::TF_RGB5A3;
+    break;
+  default:
+    Log.report(logvisor::Fatal, FMT_STRING("invalid tlut format {}"), format);
+    unreachable();
   }
-void GXLoadTlut(const GXTlutObj* obj, GXTlut idx) noexcept {
+  obj->ref = aurora::gfx::new_static_texture_2d(
-  // TODO
+      entries, 1, 1, texFmt, aurora::ArrayRef{static_cast<const u8*>(data), static_cast<size_t>(entries) * 2},
+      "GXInitTlutObj");
 }
+void GXLoadTlut(const GXTlutObj* obj, GXTlut idx) noexcept { g_gxState.tluts[idx] = *obj; }
 
 namespace aurora::gfx {
 static logvisor::Module Log("aurora::gfx::gx");
@@ -869,7 +901,7 @@ void populate_pipeline_config(PipelineConfig& config, GX::Primitive primitive) n
     } else {
       // Loaded texture object, no conversion necessary
       copyFmt = InvalidTextureFormat;
-      bindFmt = InvalidTextureFormat;
+      bindFmt = bind.texObj.fmt;
     }
     config.shaderConfig.textureConfig[i] = {copyFmt, bindFmt, flipUV};
   }
@@ -1005,7 +1037,6 @@ static absl::flat_hash_map<u32, std::pair<wgpu::BindGroupLayout, wgpu::BindGroup
 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{
@@ -1039,7 +1070,9 @@ GXBindGroups build_bind_groups(const ShaderInfo& info, const ShaderConfig& confi
       },
   };
   std::array<wgpu::BindGroupEntry, MaxTextures> samplerEntries;
-  std::array<wgpu::BindGroupEntry, MaxTextures> textureEntries;
+  std::array<wgpu::BindGroupEntry, MaxTextures * 2> textureEntries;
+  u32 samplerCount = 0;
+  u32 textureCount = 0;
   for (u32 texIdx = 0, i = 0; texIdx < info.sampledTextures.size(); ++texIdx) {
     if (!info.sampledTextures.test(texIdx)) {
       continue;
@@ -1053,10 +1086,31 @@ GXBindGroups build_bind_groups(const ShaderInfo& info, const ShaderConfig& confi
         .binding = i,
         .sampler = sampler_ref(tex.get_descriptor()),
     };
+    ++samplerCount;
     textureEntries[i] = {
         .binding = i,
         .textureView = tex.texObj.ref->view,
     };
+    // Load palette
+    const auto& texConfig = config.textureConfig[i];
+    if (texConfig.loadFmt == GX::TF_C4 || texConfig.loadFmt == GX::TF_C8 || texConfig.loadFmt == GX::TF_C14X2) {
+      ++i;
+      u32 tlut = tex.texObj.tlut;
+      if (tlut < GX_TLUT0 || tlut > GX_TLUT7) {
+        Log.report(logvisor::Fatal, FMT_STRING("tlut out of bounds {}"), tlut);
+        unreachable();
+      } else if (!g_gxState.tluts[tlut].ref) {
+        Log.report(logvisor::Fatal, FMT_STRING("tlut unbound {}"), tlut);
+        unreachable();
+      }
+      textureEntries[i] = {
+          .binding = i,
+          .textureView = g_gxState.tluts[tlut].ref->view,
+      };
+      textureCount += 2;
+    } else {
+      ++textureCount;
+    }
     i++;
   }
   return {
@@ -1069,7 +1123,7 @@ GXBindGroups build_bind_groups(const ShaderInfo& info, const ShaderConfig& confi
       .samplerBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
           .label = "GX Sampler Bind Group",
           .layout = layouts.samplerLayout,
-          .entryCount = textureCount,
+          .entryCount = samplerCount,
           .entries = samplerEntries.data(),
       }),
       .textureBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
@@ -1146,22 +1200,37 @@ GXBindGroupLayouts build_bind_group_layouts(const ShaderInfo& info, const Shader
   }
 
   u32 textureCount = info.sampledTextures.count();
-  const auto textureIt = sTextureBindGroupLayouts.find(textureCount);
+//  const auto textureIt = sTextureBindGroupLayouts.find(textureCount);
-  if (textureIt != sTextureBindGroupLayouts.end()) {
+//  if (textureIt != sTextureBindGroupLayouts.end()) {
-    const auto& [sl, tl] = textureIt->second;
+//    const auto& [sl, tl] = textureIt->second;
-    out.samplerLayout = sl;
+//    out.samplerLayout = sl;
-    out.textureLayout = tl;
+//    out.textureLayout = tl;
-  } else {
+//  } else {
+    u32 numSamplers = 0;
+    u32 numTextures = 0;
     std::array<wgpu::BindGroupLayoutEntry, MaxTextures> samplerEntries;
-    std::array<wgpu::BindGroupLayoutEntry, MaxTextures> textureEntries;
+    std::array<wgpu::BindGroupLayoutEntry, MaxTextures * 2> textureEntries;
-    for (u32 i = 0; i < textureCount; ++i) {
+    for (u32 i = 0, t = 0; i < textureCount; ++i, ++t) {
       samplerEntries[i] = {
           .binding = i,
           .visibility = wgpu::ShaderStage::Fragment,
           .sampler = {.type = wgpu::SamplerBindingType::Filtering},
       };
-      textureEntries[i] = {
+      ++numSamplers;
-          .binding = i,
+      const auto& texConfig = config.textureConfig[i];
+      if (texConfig.loadFmt == GX::TF_C4 || texConfig.loadFmt == GX::TF_C8 || texConfig.loadFmt == GX::TF_C14X2) {
+        textureEntries[t] = {
+            .binding = t,
+            .visibility = wgpu::ShaderStage::Fragment,
+            .texture =
+                {
+                    .sampleType = wgpu::TextureSampleType::Sint,
+                    .viewDimension = wgpu::TextureViewDimension::e2D,
+                },
+        };
+        ++t;
+        textureEntries[t] = {
+            .binding = t,
             .visibility = wgpu::ShaderStage::Fragment,
             .texture =
                 {
@@ -1169,11 +1238,24 @@ GXBindGroupLayouts build_bind_group_layouts(const ShaderInfo& info, const Shader
                     .viewDimension = wgpu::TextureViewDimension::e2D,
                 },
         };
+        numTextures += 2;
+      } else {
+        textureEntries[t] = {
+            .binding = t,
+            .visibility = wgpu::ShaderStage::Fragment,
+            .texture =
+                {
+                    .sampleType = wgpu::TextureSampleType::Float,
+                    .viewDimension = wgpu::TextureViewDimension::e2D,
+                },
+        };
+        ++numTextures;
+      }
     }
     {
       const wgpu::BindGroupLayoutDescriptor descriptor{
           .label = "GX Sampler Bind Group",
-          .entryCount = textureCount,
+          .entryCount = numSamplers,
           .entries = samplerEntries.data(),
       };
       out.samplerLayout = g_device.CreateBindGroupLayout(&descriptor);
@@ -1181,13 +1263,13 @@ GXBindGroupLayouts build_bind_group_layouts(const ShaderInfo& info, const Shader
     {
       const wgpu::BindGroupLayoutDescriptor descriptor{
           .label = "GX Texture Bind Group",
-          .entryCount = textureCount,
+          .entryCount = numTextures,
           .entries = textureEntries.data(),
       };
       out.textureLayout = g_device.CreateBindGroupLayout(&descriptor);
     }
-    sTextureBindGroupLayouts.try_emplace(textureCount, out.samplerLayout, out.textureLayout);
+//    sTextureBindGroupLayouts.try_emplace(textureCount, out.samplerLayout, out.textureLayout);
-  }
+//  }
   return out;
 }
 

aurora/lib/gfx/gx.hpp

@@ -173,6 +173,7 @@ struct GXState {
   std::array<Light, GX::MaxLights> lights;
   std::array<TevStage, MaxTevStages> tevStages;
   std::array<TextureBind, MaxTextures> textures;
+  std::array<GXTlutObj, MaxTextures> tluts;
   std::array<TexMtxVariant, MaxTexMtx> texMtxs;
   std::array<Mat4x4<float>, MaxPTTexMtx> ptTexMtxs;
   std::array<TcgConfig, MaxTexCoord> tcgs;

aurora/lib/gfx/gx_shader.cpp

@@ -562,7 +562,7 @@ static inline std::string vtx_attr(const ShaderConfig& config, GX::Attr attr) {
   unreachable();
 }
 
-static inline std::string texture_conversion(const TextureConfig& tex, u32 stageIdx) {
+static inline std::string texture_conversion(const TextureConfig& tex, u32 stageIdx, u32 texMapId) {
   std::string out;
   switch (tex.copyFmt) {
   default:
@@ -572,15 +572,25 @@ static inline std::string texture_conversion(const TextureConfig& tex, u32 stage
     out += fmt::format(FMT_STRING("\n    sampled{0}.a = 1.0;"), stageIdx);
     break;
   case GX::TF_I4:
+  case GX::TF_I8:
     // Perform intensity conversion
     out += fmt::format(
         FMT_STRING("\n    {{"
                    "\n        var intensity = dot(sampled{0}.rgb, vec3(0.257, 0.504, 0.098)) + 16.0 / 255.0;"
-                   "\n        sampled{0} = vec4<f32>(intensity);"
+                   "\n        sampled{0} = vec4<f32>(intensity, 0.f, 0.f, 1.f);"
                    "\n    }}"),
         stageIdx);
     break;
   }
+  switch (tex.loadFmt) {
+  default:
+    break;
+  case GX::TF_I4:
+  case GX::TF_I8:
+    // Splat R to RGBA
+    out += fmt::format(FMT_STRING("\n    sampled{0} = vec4<f32>(sampled{0}.r);"), stageIdx);
+    break;
+  }
   return out;
 }
 
@@ -1058,10 +1068,16 @@ wgpu::ShaderModule build_shader(const ShaderConfig& config, const ShaderInfo& in
     // } else {
     uvIn = fmt::format(FMT_STRING("in.tex{0}_uv"), stage.texCoordId);
     // }
+    if (texConfig.loadFmt == GX::TF_C4 || texConfig.loadFmt == GX::TF_C8 || texConfig.loadFmt == GX::TF_C14X2) {
       fragmentFnPre +=
-        fmt::format(FMT_STRING("\n    var sampled{0} = textureSampleBias(tex{1}, tex{1}_samp, {2}, ubuf.tex{1}_lod);"),
+          fmt::format(FMT_STRING("\n    var sampled{0} = textureSamplePalette(tex{1}, tex{1}_samp, {2}, tlut{1});"),
                       i, stage.texMapId, uvIn);
-    fragmentFnPre += texture_conversion(texConfig, i);
+    } else {
+      fragmentFnPre += fmt::format(
+          FMT_STRING("\n    var sampled{0} = textureSampleBias(tex{1}, tex{1}_samp, {2}, ubuf.tex{1}_lod);"), i,
+          stage.texMapId, uvIn);
+    }
+    fragmentFnPre += texture_conversion(texConfig, i, stage.texMapId);
   }
   for (int i = 0; i < info.usesTexMtx.size(); ++i) {
     if (info.usesTexMtx.test(i)) {
@@ -1135,9 +1151,21 @@ wgpu::ShaderModule build_shader(const ShaderConfig& config, const ShaderInfo& in
     sampBindings += fmt::format(FMT_STRING("\n@group(1) @binding({})\n"
                                            "var tex{}_samp: sampler;"),
                                 texBindIdx, i);
+
+    const auto& texConfig = config.textureConfig[i];
+    if (texConfig.loadFmt == GX::TF_C4 || texConfig.loadFmt == GX::TF_C8 || texConfig.loadFmt == GX::TF_C14X2) {
+      texBindings += fmt::format(FMT_STRING("\n@group(2) @binding({})\n"
+                                            "var tex{}: texture_2d<i32>;"),
+                                 texBindIdx, i);
+      ++texBindIdx;
+      texBindings += fmt::format(FMT_STRING("\n@group(2) @binding({})\n"
+                                            "var tlut{}: texture_2d<f32>;"),
+                                 texBindIdx, i);
+    } else {
       texBindings += fmt::format(FMT_STRING("\n@group(2) @binding({})\n"
                                             "var tex{}: texture_2d<f32>;"),
                                  texBindIdx, i);
+    }
     ++texBindIdx;
   }
 
@@ -1184,6 +1212,19 @@ struct VertexOutput {{
     @builtin(position) pos: vec4<f32>,{vtxOutAttrs}
 }};
 
+fn textureSamplePalette(tex: texture_2d<i32>, samp: sampler, uv: vec2<f32>, tlut: texture_2d<f32>) -> vec4<f32> {{
+    var f = fract(uv * vec2<f32>(textureDimensions(tex)) + 0.5);
+    var i = textureGather(0, tex, samp, uv);
+    var sX = textureLoad(tlut, vec2<i32>(i.x, 0), 0);
+    var sY = textureLoad(tlut, vec2<i32>(i.y, 0), 0);
+    var sZ = textureLoad(tlut, vec2<i32>(i.z, 0), 0);
+    var sW = textureLoad(tlut, vec2<i32>(i.w, 0), 0);
+    // Bilinear filtering
+    var tA = mix(sW, sZ, f.x);
+    var tB = mix(sX, sY, f.x);
+    return mix(tA, tB, f.y);
+}}
+
 @stage(vertex)
 fn vs_main({vtxInAttrs}
 ) -> VertexOutput {{

aurora/lib/gfx/texture.cpp

@@ -22,6 +22,8 @@ static TextureFormatInfo format_info(wgpu::TextureFormat format) {
   switch (format) {
   case wgpu::TextureFormat::R8Unorm:
     return {1, 1, 1, false};
+  case wgpu::TextureFormat::R16Sint:
+    return {1, 1, 2, false};
   case wgpu::TextureFormat::RGBA8Unorm:
   case wgpu::TextureFormat::R32Float:
     return {1, 1, 4, false};

aurora/lib/gfx/texture_convert.cpp

@@ -87,11 +87,11 @@ constexpr T bswap16(T val) noexcept {
 
 static ByteBuffer BuildI4FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayRef<uint8_t> data) {
   const size_t texelCount = ComputeMippedTexelCount(width, height, mips);
-  ByteBuffer buf{sizeof(RGBA8) * texelCount};
+  ByteBuffer buf{texelCount};
 
   uint32_t w = width;
   uint32_t h = height;
-  auto* targetMip = reinterpret_cast<RGBA8*>(buf.data());
+  u8* targetMip = buf.data();
   const uint8_t* in = data.data();
   for (uint32_t mip = 0; mip < mips; ++mip) {
     const uint32_t bwidth = (w + 7) / 8;
@@ -101,12 +101,9 @@ static ByteBuffer BuildI4FromGCN(uint32_t width, uint32_t height, uint32_t mips,
       for (uint32_t bx = 0; bx < bwidth; ++bx) {
         const uint32_t baseX = bx * 8;
         for (uint32_t y = 0; y < std::min(h, 8u); ++y) {
-          RGBA8* target = targetMip + (baseY + y) * w + baseX;
+          u8* target = targetMip + (baseY + y) * w + baseX;
           for (uint32_t x = 0; x < std::min(w, 8u); ++x) {
-            target[x].r = Convert4To8(in[x / 2] >> ((x & 1) ? 0 : 4) & 0xf);
+            target[x] = Convert4To8(in[x / 2] >> ((x & 1) ? 0 : 4) & 0xf);
-            target[x].g = target[x].r;
-            target[x].b = target[x].r;
-            target[x].a = target[x].r;
           }
           in += std::min<size_t>(w / 4, 4);
         }
@@ -247,13 +244,13 @@ ByteBuffer BuildIA8FromGCN(uint32_t width, uint32_t height, uint32_t mips, Array
   return buf;
 }
 
-ByteBuffer BuildC4FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayRef<uint8_t> data, RGBA8* palette) {
+ByteBuffer BuildC4FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayRef<uint8_t> data) {
   const size_t texelCount = ComputeMippedTexelCount(width, height, mips);
-  ByteBuffer buf{sizeof(RGBA8) * texelCount};
+  ByteBuffer buf{texelCount * 2};
 
   uint32_t w = width;
   uint32_t h = height;
-  auto* targetMip = reinterpret_cast<RGBA8*>(buf.data());
+  u16* targetMip = reinterpret_cast<u16*>(buf.data());
   const uint8_t* in = data.data();
   for (uint32_t mip = 0; mip < mips; ++mip) {
     const uint32_t bwidth = (w + 7) / 8;
@@ -262,13 +259,13 @@ ByteBuffer BuildC4FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayR
       const uint32_t baseY = by * 8;
       for (uint32_t bx = 0; bx < bwidth; ++bx) {
         const uint32_t baseX = bx * 8;
-        for (uint32_t y = 0; y < 8; ++y) {
+        for (uint32_t y = 0; y < std::min(8u, h); ++y) {
-          RGBA8* target = targetMip + (baseY + y) * w + baseX;
+          u16* target = targetMip + (baseY + y) * w + baseX;
           const auto n = std::min(w, 8u);
           for (size_t x = 0; x < n; ++x) {
-            target[x] = palette[in[x / 2] >> ((x & 1) ? 0 : 4) & 0xf];
+            target[x] = in[x / 2] >> ((x & 1) ? 0 : 4) & 0xf;
           }
-          in += n;
+          in += n / 2;
         }
       }
     }
@@ -284,13 +281,13 @@ ByteBuffer BuildC4FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayR
   return buf;
 }
 
-ByteBuffer BuildC8FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayRef<uint8_t> data, RGBA8* palette) {
+ByteBuffer BuildC8FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayRef<uint8_t> data) {
   const size_t texelCount = ComputeMippedTexelCount(width, height, mips);
-  ByteBuffer buf{sizeof(RGBA8) * texelCount};
+  ByteBuffer buf{texelCount * 2};
 
   uint32_t w = width;
   uint32_t h = height;
-  auto* targetMip = reinterpret_cast<RGBA8*>(buf.data());
+  u16* targetMip = reinterpret_cast<u16*>(buf.data());
   const uint8_t* in = data.data();
   for (uint32_t mip = 0; mip < mips; ++mip) {
     const uint32_t bwidth = (w + 7) / 8;
@@ -300,10 +297,10 @@ ByteBuffer BuildC8FromGCN(uint32_t width, uint32_t height, uint32_t mips, ArrayR
       for (uint32_t bx = 0; bx < bwidth; ++bx) {
         const uint32_t baseX = bx * 8;
         for (uint32_t y = 0; y < 4; ++y) {
-          RGBA8* target = targetMip + (baseY + y) * w + baseX;
+          u16* target = targetMip + (baseY + y) * w + baseX;
           const auto n = std::min(w, 8u);
           for (size_t x = 0; x < n; ++x) {
-            target[x] = palette[in[x]];
+            target[x] = in[x];
           }
           in += n;
         }
@@ -336,9 +333,9 @@ ByteBuffer BuildRGB565FromGCN(uint32_t width, uint32_t height, uint32_t mips, Ar
       const uint32_t baseY = by * 4;
       for (uint32_t bx = 0; bx < bwidth; ++bx) {
         const uint32_t baseX = bx * 4;
-        for (uint32_t y = 0; y < 4; ++y) {
+        for (uint32_t y = 0; y < std::min(4u, h); ++y) {
           RGBA8* target = targetMip + (baseY + y) * w + baseX;
-          for (size_t x = 0; x < 4; ++x) {
+          for (size_t x = 0; x < std::min(4u, w); ++x) {
             const auto texel = bswap16(in[x]);
             target[x].r = Convert5To8(texel >> 11 & 0x1f);
             target[x].g = Convert6To8(texel >> 5 & 0x3f);
@@ -376,9 +373,9 @@ ByteBuffer BuildRGB5A3FromGCN(uint32_t width, uint32_t height, uint32_t mips, Ar
       const uint32_t baseY = by * 4;
       for (uint32_t bx = 0; bx < bwidth; ++bx) {
         const uint32_t baseX = bx * 4;
-        for (uint32_t y = 0; y < 4; ++y) {
+        for (uint32_t y = 0; y < std::min(4u, h); ++y) {
           RGBA8* target = targetMip + (baseY + y) * w + baseX;
-          for (size_t x = 0; x < 4; ++x) {
+          for (size_t x = 0; x < std::min(4u, w); ++x) {
             const auto texel = bswap16(in[x]);
             if ((texel & 0x8000) != 0) {
               target[x].r = Convert5To8(texel >> 10 & 0x1f);
@@ -599,13 +596,9 @@ ByteBuffer convert_texture(GX::TextureFormat format, uint32_t width, uint32_t he
   case GX::TF_IA8:
     return BuildIA8FromGCN(width, height, mips, data);
   case GX::TF_C4:
-    Log.report(logvisor::Fatal, FMT_STRING("convert_texture: C4 unimplemented"));
+    return BuildC4FromGCN(width, height, mips, data);
-    unreachable();
-    // return BuildC4FromGCN(width, height, mips, data);
   case GX::TF_C8:
-    Log.report(logvisor::Fatal, FMT_STRING("convert_texture: C8 unimplemented"));
+    return BuildC8FromGCN(width, height, mips, data);
-    unreachable();
-    // return BuildC8FromGCN(width, height, mips, data);
   case GX::TF_C14X2:
     Log.report(logvisor::Fatal, FMT_STRING("convert_texture: C14X2 unimplemented"));
     unreachable();

aurora/lib/gfx/texture_convert.hpp

@@ -7,9 +7,13 @@
 namespace aurora::gfx {
 static wgpu::TextureFormat to_wgpu(GX::TextureFormat format) {
   switch (format) {
-  case GX::TF_C8:
+  case GX::TF_I4:
   case GX::TF_I8:
     return wgpu::TextureFormat::R8Unorm;
+  case GX::TF_C4:
+  case GX::TF_C8:
+  case GX::TF_C14X2:
+    return wgpu::TextureFormat::R16Sint;
   case GX::TF_CMPR:
     if (gpu::g_device.HasFeature(wgpu::FeatureName::TextureCompressionBC)) {
       return wgpu::TextureFormat::BC1RGBAUnorm;

aurora/lib/gpu.cpp

@@ -285,10 +285,11 @@ void initialize(SDL_Window* window) {
       "use_dxc",
 #endif
 #ifdef NDEBUG
-      "skip_validation", "disable_robustness",
+      "skip_validation",
-#else
+      "disable_robustness",
-      "use_user_defined_labels_in_backend",
 #endif
+      "use_user_defined_labels_in_backend",
+      "disable_symbol_renaming",
       /* clang-format on */
     };
     wgpu::DawnTogglesDeviceDescriptor togglesDescriptor{};