Move most backend functionality to VideoCommon

Source/Core/VideoCommon/TextureCacheBase.cpp

@@ -28,17 +28,21 @@
 #include "Core/FifoPlayer/FifoRecorder.h"
 #include "Core/HW/Memmap.h"
 
+#include "VideoCommon/AbstractFramebuffer.h"
 #include "VideoCommon/AbstractStagingTexture.h"
 #include "VideoCommon/BPMemory.h"
-#include "VideoCommon/Debugger.h"
-#include "VideoCommon/FramebufferManagerBase.h"
+#include "VideoCommon/FramebufferManager.h"
 #include "VideoCommon/HiresTextures.h"
 #include "VideoCommon/PixelShaderManager.h"
 #include "VideoCommon/RenderBase.h"
 #include "VideoCommon/SamplerCommon.h"
+#include "VideoCommon/ShaderCache.h"
 #include "VideoCommon/Statistics.h"
 #include "VideoCommon/TextureCacheBase.h"
+#include "VideoCommon/TextureConversionShader.h"
+#include "VideoCommon/TextureConverterShaderGen.h"
 #include "VideoCommon/TextureDecoder.h"
+#include "VideoCommon/VertexManagerBase.h"
 #include "VideoCommon/VideoCommon.h"
 #include "VideoCommon/VideoConfig.h"
 
@@ -51,8 +55,9 @@ std::unique_ptr<TextureCacheBase> g_texture_cache;
 
 std::bitset<8> TextureCacheBase::valid_bind_points;
 
-TextureCacheBase::TCacheEntry::TCacheEntry(std::unique_ptr<AbstractTexture> tex)
-    : texture(std::move(tex))
+TextureCacheBase::TCacheEntry::TCacheEntry(std::unique_ptr<AbstractTexture> tex,
+                                           std::unique_ptr<AbstractFramebuffer> fb)
+    : texture(std::move(tex)), framebuffer(std::move(fb))
 {
 }
 
@@ -89,6 +94,25 @@ TextureCacheBase::TextureCacheBase()
   InvalidateAllBindPoints();
 }
 
+TextureCacheBase::~TextureCacheBase()
+{
+  HiresTexture::Shutdown();
+  Invalidate();
+  Common::FreeAlignedMemory(temp);
+  temp = nullptr;
+}
+
+bool TextureCacheBase::Initialize()
+{
+  if (!CreateUtilityTextures())
+  {
+    PanicAlert("Failed to create utility textures.");
+    return false;
+  }
+
+  return true;
+}
+
 void TextureCacheBase::Invalidate()
 {
   FlushEFBCopies();
@@ -108,14 +132,6 @@ void TextureCacheBase::Invalidate()
   texture_pool.clear();
 }
 
-TextureCacheBase::~TextureCacheBase()
-{
-  HiresTexture::Shutdown();
-  Invalidate();
-  Common::FreeAlignedMemory(temp);
-  temp = nullptr;
-}
-
 void TextureCacheBase::OnConfigChanged(VideoConfig& config)
 {
   if (config.bHiresTextures != backup_config.hires_textures ||
@@ -139,14 +155,6 @@ void TextureCacheBase::OnConfigChanged(VideoConfig& config)
                                        g_ActiveConfig.bTexFmtOverlayCenter);
   }
 
-  if ((config.stereo_mode != StereoMode::Off) != backup_config.stereo_3d ||
-      config.bStereoEFBMonoDepth != backup_config.efb_mono_depth)
-  {
-    g_texture_cache->DeleteShaders();
-    if (!g_texture_cache->CompileShaders())
-      PanicAlert("Failed to recompile one or more texture conversion shaders.");
-  }
-
   SetBackupConfig(config);
 }
 
@@ -243,7 +251,7 @@ TextureCacheBase::ApplyPaletteToEntry(TCacheEntry* entry, u8* palette, TLUTForma
 {
   TextureConfig new_config = entry->texture->GetConfig();
   new_config.levels = 1;
-  new_config.rendertarget = true;
+  new_config.flags |= AbstractTextureFlag_RenderTarget;
 
   TCacheEntry* decoded_entry = AllocateCacheEntry(new_config);
   if (!decoded_entry)
@@ -279,29 +287,27 @@ void TextureCacheBase::ScaleTextureCacheEntryTo(TextureCacheBase::TCacheEntry* e
     return;
   }
 
-  TextureConfig newconfig;
-  newconfig.width = new_width;
-  newconfig.height = new_height;
-  newconfig.layers = entry->GetNumLayers();
-  newconfig.rendertarget = true;
-
-  std::unique_ptr<AbstractTexture> new_texture = AllocateTexture(newconfig);
-  if (new_texture)
+  const TextureConfig newconfig(new_width, new_height, 1, entry->GetNumLayers(), 1,
+                                AbstractTextureFormat::RGBA8, AbstractTextureFlag_RenderTarget);
+  std::optional<TexPoolEntry> new_texture = AllocateTexture(newconfig);
+  if (!new_texture)
   {
-    new_texture->ScaleRectangleFromTexture(entry->texture.get(),
-                                           entry->texture->GetConfig().GetRect(),
-                                           new_texture->GetConfig().GetRect());
-    entry->texture.swap(new_texture);
+    ERROR_LOG(VIDEO, "Scaling failed due to texture allocation failure");
+    return;
+  }
 
-    auto config = new_texture->GetConfig();
-    // At this point new_texture has the old texture in it,
-    // we can potentially reuse this, so let's move it back to the pool
-    texture_pool.emplace(config, TexPoolEntry(std::move(new_texture)));
-  }
-  else
-  {
-    ERROR_LOG(VIDEO, "Scaling failed");
-  }
+  // No need to convert the coordinates here since they'll be the same.
+  g_renderer->ScaleTexture(new_texture->framebuffer.get(),
+                           new_texture->texture->GetConfig().GetRect(), entry->texture.get(),
+                           entry->texture->GetConfig().GetRect());
+  entry->texture.swap(new_texture->texture);
+  entry->framebuffer.swap(new_texture->framebuffer);
+
+  // At this point new_texture has the old texture in it,
+  // we can potentially reuse this, so let's move it back to the pool
+  auto config = new_texture->texture->GetConfig();
+  texture_pool.emplace(
+      config, TexPoolEntry(std::move(new_texture->texture), std::move(new_texture->framebuffer)));
 }
 
 TextureCacheBase::TCacheEntry*
@@ -747,8 +753,6 @@ TextureCacheBase::TCacheEntry* TextureCacheBase::Load(const u32 stage)
   entry->frameCount = FRAMECOUNT_INVALID;
   bound_textures[stage] = entry;
 
-  GFX_DEBUGGER_PAUSE_AT(NEXT_TEXTURE_CHANGE, true);
-
   // We need to keep track of invalided textures until they have actually been replaced or
   // re-loaded
   valid_bind_points.set(stage);
@@ -1036,25 +1040,17 @@ TextureCacheBase::GetTexture(u32 address, u32 width, u32 height, const TextureFo
   // banks, and if we're doing an copy we may as well just do the whole thing on the CPU, since
   // there's no conversion between formats. In the future this could be extended with a separate
   // shader, however.
-  bool decode_on_gpu = !hires_tex && g_ActiveConfig.UseGPUTextureDecoding() &&
-                       g_texture_cache->SupportsGPUTextureDecode(texformat, tlutfmt) &&
-                       !(from_tmem && texformat == TextureFormat::RGBA8);
+  const bool decode_on_gpu = !hires_tex && g_ActiveConfig.UseGPUTextureDecoding() &&
+                             !(from_tmem && texformat == TextureFormat::RGBA8);
 
   // create the entry/texture
-  TextureConfig config;
-  config.width = width;
-  config.height = height;
-  config.levels = texLevels;
-  config.format = hires_tex ? hires_tex->GetFormat() : AbstractTextureFormat::RGBA8;
-
-  ArbitraryMipmapDetector arbitrary_mip_detector;
-
+  const TextureConfig config(width, height, texLevels, 1, 1,
+                             hires_tex ? hires_tex->GetFormat() : AbstractTextureFormat::RGBA8, 0);
   TCacheEntry* entry = AllocateCacheEntry(config);
-  GFX_DEBUGGER_PAUSE_AT(NEXT_NEW_TEXTURE, true);
-
   if (!entry)
     return nullptr;
 
+  ArbitraryMipmapDetector arbitrary_mip_detector;
   const u8* tlut = &texMem[tlutaddr];
   if (hires_tex)
   {
@@ -1068,14 +1064,10 @@ TextureCacheBase::GetTexture(u32 address, u32 width, u32 height, const TextureFo
 
   if (!hires_tex)
   {
-    if (decode_on_gpu)
-    {
-      u32 row_stride = bytes_per_block * (expandedWidth / bsw);
-      g_texture_cache->DecodeTextureOnGPU(entry, 0, src_data, texture_size, texformat, width,
-                                          height, expandedWidth, expandedHeight, row_stride, tlut,
-                                          tlutfmt);
-    }
-    else
+    if (!decode_on_gpu ||
+        !DecodeTextureOnGPU(entry, 0, src_data, texture_size, texformat, width, height,
+                            expandedWidth, expandedHeight, bytes_per_block * (expandedWidth / bsw),
+                            tlut, tlutfmt))
     {
       size_t decoded_texture_size = expandedWidth * sizeof(u32) * expandedHeight;
 
@@ -1168,20 +1160,16 @@ TextureCacheBase::GetTexture(u32 address, u32 width, u32 height, const TextureFo
       const u32 expanded_mip_height = Common::AlignUp(mip_height, bsh);
 
       const u8*& mip_src_data = from_tmem ? ((level % 2) ? ptr_odd : ptr_even) : src_data;
-      size_t mip_size =
+      const u32 mip_size =
           TexDecoder_GetTextureSizeInBytes(expanded_mip_width, expanded_mip_height, texformat);
 
-      if (decode_on_gpu)
-      {
-        u32 row_stride = bytes_per_block * (expanded_mip_width / bsw);
-        g_texture_cache->DecodeTextureOnGPU(entry, level, mip_src_data, mip_size, texformat,
-                                            mip_width, mip_height, expanded_mip_width,
-                                            expanded_mip_height, row_stride, tlut, tlutfmt);
-      }
-      else
+      if (!decode_on_gpu ||
+          !DecodeTextureOnGPU(entry, level, mip_src_data, mip_size, texformat, mip_width,
+                              mip_height, expanded_mip_width, expanded_mip_height,
+                              bytes_per_block * (expanded_mip_width / bsw), tlut, tlutfmt))
       {
         // No need to call CheckTempSize here, as the whole buffer is preallocated at the beginning
-        size_t decoded_mip_size = expanded_mip_width * sizeof(u32) * expanded_mip_height;
+        const u32 decoded_mip_size = expanded_mip_width * sizeof(u32) * expanded_mip_height;
         TexDecoder_Decode(dst_buffer, mip_src_data, expanded_mip_width, expanded_mip_height,
                           texformat, tlut, tlutfmt);
         entry->texture->Load(level, mip_width, mip_height, expanded_mip_width, dst_buffer,
@@ -1212,6 +1200,8 @@ TextureCacheBase::GetTexture(u32 address, u32 width, u32 height, const TextureFo
 
   entry = DoPartialTextureUpdates(iter->second, &texMem[tlutaddr], tlutfmt);
 
+  // This should only be needed if the texture was updated, or used GPU decoding.
+  entry->texture->FinishedRendering();
   return entry;
 }
 
@@ -1379,7 +1369,7 @@ TextureCacheBase::GetTextureFromOverlappingTextures(const TextureLookupInformati
   // or as a container for overlapping textures, never need to be combined
   // with other textures
   TCacheEntry* stitched_entry =
-      CreateNormalTexture(tex_info, FramebufferManagerBase::GetEFBLayers());
+      CreateNormalTexture(tex_info, g_framebuffer_manager->GetEFBLayers());
   stitched_entry->may_have_overlapping_textures = false;
 
   // It is possible that some of the overlapping textures overlap each other.
@@ -1540,6 +1530,7 @@ TextureCacheBase::GetTextureFromOverlappingTextures(const TextureLookupInformati
     return nullptr;
   }
 
+  stitched_entry->texture->FinishedRendering();
   return stitched_entry;
 }
 
@@ -1547,17 +1538,10 @@ TextureCacheBase::TCacheEntry*
 TextureCacheBase::CreateNormalTexture(const TextureLookupInformation& tex_info, u32 layers)
 {
   // create the entry/texture
-  TextureConfig config;
-  config.width = tex_info.native_width;
-  config.height = tex_info.native_height;
-  config.levels = tex_info.computed_levels;
-  config.format = AbstractTextureFormat::RGBA8;
-  config.rendertarget = true;
-  config.layers = layers;
-
+  const TextureConfig config(tex_info.native_width, tex_info.native_height,
+                             tex_info.computed_levels, layers, 1, AbstractTextureFormat::RGBA8,
+                             AbstractTextureFlag_RenderTarget);
   TCacheEntry* entry = AllocateCacheEntry(config);
-  GFX_DEBUGGER_PAUSE_AT(NEXT_NEW_TEXTURE, true);
-
   if (!entry)
     return nullptr;
 
@@ -1590,15 +1574,15 @@ TextureCacheBase::GetTextureFromMemory(const TextureLookupInformation& tex_info)
   // banks, and if we're doing an copy we may as well just do the whole thing on the CPU, since
   // there's no conversion between formats. In the future this could be extended with a separate
   // shader, however.
-  bool decode_on_gpu = g_ActiveConfig.UseGPUTextureDecoding() &&
-                       g_texture_cache->SupportsGPUTextureDecode(tex_info.full_format.texfmt,
-                                                                 tex_info.full_format.tlutfmt) &&
-                       !(tex_info.from_tmem && tex_info.full_format.texfmt == TextureFormat::RGBA8);
+  const bool decode_on_gpu =
+      g_ActiveConfig.UseGPUTextureDecoding() &&
+      !(tex_info.from_tmem && tex_info.full_format.texfmt == TextureFormat::RGBA8);
 
   // Since it's coming from RAM, it can only have one layer (no stereo).
   TCacheEntry* entry = CreateNormalTexture(tex_info, 1);
   entry->may_have_overlapping_textures = false;
   LoadTextureLevelZeroFromMemory(entry, tex_info, decode_on_gpu);
+  entry->texture->FinishedRendering();
   return entry;
 }
 
@@ -1608,15 +1592,13 @@ void TextureCacheBase::LoadTextureLevelZeroFromMemory(TCacheEntry* entry_to_upda
 {
   const u8* tlut = &texMem[tex_info.tlut_address];
 
-  if (decode_on_gpu)
-  {
-    u32 row_stride = tex_info.bytes_per_block * (tex_info.expanded_width / tex_info.block_width);
-    g_texture_cache->DecodeTextureOnGPU(
-        entry_to_update, 0, tex_info.src_data, tex_info.total_bytes, tex_info.full_format.texfmt,
-        tex_info.native_width, tex_info.native_height, tex_info.expanded_width,
-        tex_info.expanded_height, row_stride, tlut, tex_info.full_format.tlutfmt);
-  }
-  else
+  if (!decode_on_gpu ||
+      DecodeTextureOnGPU(entry_to_update, 0, tex_info.src_data, tex_info.total_bytes,
+                         tex_info.full_format.texfmt, tex_info.native_width, tex_info.native_height,
+                         tex_info.expanded_width, tex_info.expanded_height,
+                         tex_info.bytes_per_block *
+                             (tex_info.expanded_width / tex_info.block_width),
+                         tlut, tex_info.full_format.tlutfmt))
   {
     size_t decoded_texture_size = tex_info.expanded_width * sizeof(u32) * tex_info.expanded_height;
     CheckTempSize(decoded_texture_size);
@@ -1637,12 +1619,12 @@ void TextureCacheBase::LoadTextureLevelZeroFromMemory(TCacheEntry* entry_to_upda
   }
 }
 
-TextureCacheBase::CopyFilterCoefficientArray TextureCacheBase::GetRAMCopyFilterCoefficients(
-    const CopyFilterCoefficients::Values& coefficients) const
+EFBCopyFilterCoefficients
+TextureCacheBase::GetRAMCopyFilterCoefficients(const CopyFilterCoefficients::Values& coefficients)
 {
   // To simplify the backend, we precalculate the three coefficients in common. Coefficients 0, 1
   // are for the row above, 2, 3, 4 are for the current pixel, and 5, 6 are for the row below.
-  return {{
+  return EFBCopyFilterCoefficients{
       static_cast<float>(static_cast<u32>(coefficients[0]) + static_cast<u32>(coefficients[1])) /
           64.0f,
       static_cast<float>(static_cast<u32>(coefficients[2]) + static_cast<u32>(coefficients[3]) +
@@ -1650,31 +1632,31 @@ TextureCacheBase::CopyFilterCoefficientArray TextureCacheBase::GetRAMCopyFilterC
           64.0f,
       static_cast<float>(static_cast<u32>(coefficients[5]) + static_cast<u32>(coefficients[6])) /
           64.0f,
-  }};
+  };
 }
 
-TextureCacheBase::CopyFilterCoefficientArray TextureCacheBase::GetVRAMCopyFilterCoefficients(
-    const CopyFilterCoefficients::Values& coefficients) const
+EFBCopyFilterCoefficients
+TextureCacheBase::GetVRAMCopyFilterCoefficients(const CopyFilterCoefficients::Values& coefficients)
 {
   // If the user disables the copy filter, only apply it to the VRAM copy.
   // This way games which are sensitive to changes to the RAM copy of the XFB will be unaffected.
-  CopyFilterCoefficientArray res = GetRAMCopyFilterCoefficients(coefficients);
+  EFBCopyFilterCoefficients res = GetRAMCopyFilterCoefficients(coefficients);
   if (!g_ActiveConfig.bDisableCopyFilter)
     return res;
 
   // Disabling the copy filter in options should not ignore the values the game sets completely,
   // as some games use the filter coefficients to control the brightness of the screen. Instead,
   // add all coefficients to the middle sample, so the deflicker/vertical filter has no effect.
-  res[1] += res[0] + res[2];
-  res[0] = 0;
-  res[2] = 0;
+  res.middle = res.upper + res.middle + res.lower;
+  res.upper = 0.0f;
+  res.lower = 0.0f;
   return res;
 }
 
-bool TextureCacheBase::NeedsCopyFilterInShader(const CopyFilterCoefficientArray& coefficients) const
+bool TextureCacheBase::NeedsCopyFilterInShader(const EFBCopyFilterCoefficients& coefficients)
 {
   // If the top/bottom coefficients are zero, no point sampling/blending from these rows.
-  return coefficients[0] != 0 || coefficients[2] != 0;
+  return coefficients.upper != 0 || coefficients.lower != 0;
 }
 
 void TextureCacheBase::CopyRenderTargetToTexture(
@@ -1816,12 +1798,8 @@ void TextureCacheBase::CopyRenderTargetToTexture(
   if (copy_to_vram)
   {
     // create the texture
-    TextureConfig config;
-    config.rendertarget = true;
-    config.width = scaled_tex_w;
-    config.height = scaled_tex_h;
-    config.layers = FramebufferManagerBase::GetEFBLayers();
-
+    const TextureConfig config(scaled_tex_w, scaled_tex_h, 1, g_framebuffer_manager->GetEFBLayers(),
+                               1, AbstractTextureFormat::RGBA8, AbstractTextureFlag_RenderTarget);
     entry = AllocateCacheEntry(config);
     if (entry)
     {
@@ -1866,7 +1844,7 @@ void TextureCacheBase::CopyRenderTargetToTexture(
 
   if (copy_to_ram)
   {
-    CopyFilterCoefficientArray coefficients = GetRAMCopyFilterCoefficients(filter_coefficients);
+    EFBCopyFilterCoefficients coefficients = GetRAMCopyFilterCoefficients(filter_coefficients);
     PEControl::PixelFormat srcFormat = bpmem.zcontrol.pixel_format;
     EFBCopyParams format(srcFormat, dstFormat, is_depth_copy, isIntensity,
                          NeedsCopyFilterInShader(coefficients));
@@ -2006,11 +1984,6 @@ void TextureCacheBase::FlushEFBCopies()
   m_pending_efb_copies.clear();
 }
 
-TextureConfig TextureCacheBase::GetEncodingTextureConfig()
-{
-  return TextureConfig(EFB_WIDTH * 4, 1024, 1, 1, 1, AbstractTextureFormat::BGRA8, true);
-}
-
 void TextureCacheBase::WriteEFBCopyToRAM(u8* dst_ptr, u32 width, u32 height, u32 stride,
                                          std::unique_ptr<AbstractStagingTexture> staging_texture)
 {
@@ -2069,8 +2042,8 @@ std::unique_ptr<AbstractStagingTexture> TextureCacheBase::GetEFBCopyStagingTextu
     return ptr;
   }
 
-  std::unique_ptr<AbstractStagingTexture> tex =
-      g_renderer->CreateStagingTexture(StagingTextureType::Readback, GetEncodingTextureConfig());
+  std::unique_ptr<AbstractStagingTexture> tex = g_renderer->CreateStagingTexture(
+      StagingTextureType::Readback, m_efb_encoding_texture->GetConfig());
   if (!tex)
     WARN_LOG(VIDEO, "Failed to create EFB copy staging texture");
 
@@ -2127,37 +2100,50 @@ void TextureCacheBase::UninitializeXFBMemory(u8* dst, u32 stride, u32 bytes_per_
 
 TextureCacheBase::TCacheEntry* TextureCacheBase::AllocateCacheEntry(const TextureConfig& config)
 {
-  std::unique_ptr<AbstractTexture> texture = AllocateTexture(config);
-
-  if (!texture)
-  {
+  std::optional<TexPoolEntry> alloc = AllocateTexture(config);
+  if (!alloc)
     return nullptr;
-  }
-  TCacheEntry* cacheEntry = new TCacheEntry(std::move(texture));
+
+  TCacheEntry* cacheEntry =
+      new TCacheEntry(std::move(alloc->texture), std::move(alloc->framebuffer));
   cacheEntry->textures_by_hash_iter = textures_by_hash.end();
   cacheEntry->id = last_entry_id++;
   return cacheEntry;
 }
 
-std::unique_ptr<AbstractTexture> TextureCacheBase::AllocateTexture(const TextureConfig& config)
+std::optional<TextureCacheBase::TexPoolEntry>
+TextureCacheBase::AllocateTexture(const TextureConfig& config)
 {
   TexPool::iterator iter = FindMatchingTextureFromPool(config);
-  std::unique_ptr<AbstractTexture> entry;
   if (iter != texture_pool.end())
   {
-    entry = std::move(iter->second.texture);
+    auto entry = std::move(iter->second);
     texture_pool.erase(iter);
+    return std::move(entry);
   }
-  else
+
+  std::unique_ptr<AbstractTexture> texture = g_renderer->CreateTexture(config);
+  if (!texture)
   {
-    entry = g_renderer->CreateTexture(config);
-    if (!entry)
-      return nullptr;
-
-    INCSTAT(stats.numTexturesCreated);
+    WARN_LOG(VIDEO, "Failed to allocate a %ux%ux%u texture", config.width, config.height,
+             config.layers);
+    return {};
   }
 
-  return entry;
+  std::unique_ptr<AbstractFramebuffer> framebuffer;
+  if (config.IsRenderTarget())
+  {
+    framebuffer = g_renderer->CreateFramebuffer(texture.get(), nullptr);
+    if (!framebuffer)
+    {
+      WARN_LOG(VIDEO, "Failed to allocate a %ux%ux%u framebuffer", config.width, config.height,
+               config.layers);
+      return {};
+    }
+  }
+
+  INCSTAT(stats.numTexturesCreated);
+  return TexPoolEntry(std::move(texture), std::move(framebuffer));
 }
 
 TextureCacheBase::TexPool::iterator
@@ -2170,7 +2156,7 @@ TextureCacheBase::FindMatchingTextureFromPool(const TextureConfig& config)
   // As non-render-target textures are usually static, this should not matter much.
   auto range = texture_pool.equal_range(config);
   auto matching_iter = std::find_if(range.first, range.second, [](const auto& iter) {
-    return iter.first.rendertarget || iter.second.frameCount != FRAMECOUNT_INVALID;
+    return iter.first.IsRenderTarget() || iter.second.frameCount != FRAMECOUNT_INVALID;
   });
   return matching_iter != range.second ? matching_iter : texture_pool.end();
 }
@@ -2261,7 +2247,8 @@ TextureCacheBase::InvalidateTexture(TexAddrCache::iterator iter, bool discard_pe
   }
 
   auto config = entry->texture->GetConfig();
-  texture_pool.emplace(config, TexPoolEntry(std::move(entry->texture)));
+  texture_pool.emplace(config,
+                       TexPoolEntry(std::move(entry->texture), std::move(entry->framebuffer)));
 
   // Don't delete if there's a pending EFB copy, as we need the TCacheEntry alive.
   if (!entry->pending_efb_copy)
@@ -2270,6 +2257,283 @@ TextureCacheBase::InvalidateTexture(TexAddrCache::iterator iter, bool discard_pe
   return textures_by_address.erase(iter);
 }
 
+bool TextureCacheBase::CreateUtilityTextures()
+{
+  constexpr TextureConfig encoding_texture_config(
+      EFB_WIDTH * 4, 1024, 1, 1, 1, AbstractTextureFormat::BGRA8, AbstractTextureFlag_RenderTarget);
+  m_efb_encoding_texture = g_renderer->CreateTexture(encoding_texture_config);
+  if (!m_efb_encoding_texture)
+    return false;
+
+  m_efb_encoding_framebuffer = g_renderer->CreateFramebuffer(m_efb_encoding_texture.get(), nullptr);
+  if (!m_efb_encoding_framebuffer)
+    return false;
+
+  if (g_ActiveConfig.backend_info.bSupportsGPUTextureDecoding)
+  {
+    constexpr TextureConfig decoding_texture_config(
+        1024, 1024, 1, 1, 1, AbstractTextureFormat::RGBA8, AbstractTextureFlag_ComputeImage);
+    m_decoding_texture = g_renderer->CreateTexture(decoding_texture_config);
+    if (!m_decoding_texture)
+      return false;
+  }
+
+  return true;
+}
+
+void TextureCacheBase::CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
+                                           const EFBRectangle& src_rect, bool scale_by_half,
+                                           EFBCopyFormat dst_format, bool is_intensity, float gamma,
+                                           bool clamp_top, bool clamp_bottom,
+                                           const EFBCopyFilterCoefficients& filter_coefficients)
+{
+  // Flush EFB pokes first, as they're expected to be included.
+  g_framebuffer_manager->FlushEFBPokes();
+
+  // Get the pipeline which we will be using. If the compilation failed, this will be null.
+  const AbstractPipeline* copy_pipeline =
+      g_shader_cache->GetEFBCopyToVRAMPipeline(TextureConversionShaderGen::GetShaderUid(
+          dst_format, is_depth_copy, is_intensity, scale_by_half,
+          NeedsCopyFilterInShader(filter_coefficients)));
+  if (!copy_pipeline)
+  {
+    WARN_LOG(VIDEO, "Skipping EFB copy to VRAM due to missing pipeline.");
+    return;
+  }
+
+  const auto scaled_src_rect = g_renderer->ConvertEFBRectangle(src_rect);
+  AbstractTexture* src_texture =
+      is_depth_copy ? g_framebuffer_manager->ResolveEFBDepthTexture(scaled_src_rect) :
+                      g_framebuffer_manager->ResolveEFBColorTexture(scaled_src_rect);
+
+  g_renderer->BeginUtilityDrawing();
+
+  // Fill uniform buffer.
+  struct Uniforms
+  {
+    float src_left, src_top, src_width, src_height;
+    float filter_coefficients[3];
+    float gamma_rcp;
+    float clamp_top;
+    float clamp_bottom;
+    float pixel_height;
+    u32 padding;
+  };
+  Uniforms uniforms;
+  const auto framebuffer_rect = g_renderer->ConvertFramebufferRectangle(
+      scaled_src_rect, g_framebuffer_manager->GetEFBFramebuffer());
+  const float rcp_efb_width = 1.0f / static_cast<float>(g_framebuffer_manager->GetEFBWidth());
+  const float rcp_efb_height = 1.0f / static_cast<float>(g_framebuffer_manager->GetEFBHeight());
+  uniforms.src_left = framebuffer_rect.left * rcp_efb_width;
+  uniforms.src_top = framebuffer_rect.top * rcp_efb_height;
+  uniforms.src_width = framebuffer_rect.GetWidth() * rcp_efb_width;
+  uniforms.src_height = framebuffer_rect.GetHeight() * rcp_efb_height;
+  uniforms.filter_coefficients[0] = filter_coefficients.upper;
+  uniforms.filter_coefficients[1] = filter_coefficients.middle;
+  uniforms.filter_coefficients[2] = filter_coefficients.lower;
+  uniforms.gamma_rcp = 1.0f / gamma;
+  uniforms.clamp_top = clamp_top ? framebuffer_rect.top * rcp_efb_height : 0.0f;
+  uniforms.clamp_bottom = clamp_bottom ? framebuffer_rect.bottom * rcp_efb_height : 1.0f;
+  uniforms.pixel_height = g_ActiveConfig.bCopyEFBScaled ? rcp_efb_height : 1.0f / EFB_HEIGHT;
+  uniforms.padding = 0;
+  g_vertex_manager->UploadUtilityUniforms(&uniforms, sizeof(uniforms));
+
+  // Use the copy pipeline to render the VRAM copy.
+  g_renderer->SetAndDiscardFramebuffer(entry->framebuffer.get());
+  g_renderer->SetViewportAndScissor(entry->framebuffer->GetRect());
+  g_renderer->SetPipeline(copy_pipeline);
+  g_renderer->SetTexture(0, src_texture);
+  g_renderer->SetSamplerState(0, scale_by_half ? RenderState::GetLinearSamplerState() :
+                                                 RenderState::GetPointSamplerState());
+  g_renderer->Draw(0, 3);
+  g_renderer->EndUtilityDrawing();
+  entry->texture->FinishedRendering();
+}
+
+void TextureCacheBase::CopyEFB(AbstractStagingTexture* dst, const EFBCopyParams& params,
+                               u32 native_width, u32 bytes_per_row, u32 num_blocks_y,
+                               u32 memory_stride, const EFBRectangle& src_rect, bool scale_by_half,
+                               float y_scale, float gamma, bool clamp_top, bool clamp_bottom,
+                               const EFBCopyFilterCoefficients& filter_coefficients)
+{
+  // Flush EFB pokes first, as they're expected to be included.
+  g_framebuffer_manager->FlushEFBPokes();
+
+  // Get the pipeline which we will be using. If the compilation failed, this will be null.
+  const AbstractPipeline* copy_pipeline = g_shader_cache->GetEFBCopyToRAMPipeline(params);
+  if (!copy_pipeline)
+  {
+    WARN_LOG(VIDEO, "Skipping EFB copy to VRAM due to missing pipeline.");
+    return;
+  }
+
+  const auto scaled_src_rect = g_renderer->ConvertEFBRectangle(src_rect);
+  AbstractTexture* src_texture =
+      params.depth ? g_framebuffer_manager->ResolveEFBDepthTexture(scaled_src_rect) :
+                     g_framebuffer_manager->ResolveEFBColorTexture(scaled_src_rect);
+
+  g_renderer->BeginUtilityDrawing();
+
+  // Fill uniform buffer.
+  struct Uniforms
+  {
+    std::array<s32, 4> position_uniform;
+    float y_scale;
+    float gamma_rcp;
+    float clamp_top;
+    float clamp_bottom;
+    float filter_coefficients[3];
+    u32 padding;
+  };
+  Uniforms encoder_params;
+  const auto framebuffer_rect = g_renderer->ConvertFramebufferRectangle(
+      scaled_src_rect, g_framebuffer_manager->GetEFBFramebuffer());
+  const float rcp_efb_height = 1.0f / static_cast<float>(g_framebuffer_manager->GetEFBHeight());
+  encoder_params.position_uniform[0] = scaled_src_rect.left;
+  encoder_params.position_uniform[1] = scaled_src_rect.top;
+  encoder_params.position_uniform[2] = static_cast<s32>(native_width);
+  encoder_params.position_uniform[3] = scale_by_half ? 2 : 1;
+  encoder_params.y_scale = y_scale;
+  encoder_params.gamma_rcp = 1.0f / gamma;
+  encoder_params.clamp_top = clamp_top ? framebuffer_rect.top * rcp_efb_height : 0.0f;
+  encoder_params.clamp_bottom = clamp_bottom ? framebuffer_rect.bottom * rcp_efb_height : 1.0f;
+  encoder_params.filter_coefficients[0] = filter_coefficients.upper;
+  encoder_params.filter_coefficients[1] = filter_coefficients.middle;
+  encoder_params.filter_coefficients[2] = filter_coefficients.lower;
+  g_vertex_manager->UploadUtilityUniforms(&encoder_params, sizeof(encoder_params));
+
+  // We also linear filtering for both box filtering and downsampling higher resolutions to 1x
+  // TODO: This only produces perfect downsampling for 2x IR, other resolutions will need more
+  //       complex down filtering to average all pixels and produce the correct result.
+  const bool linear_filter =
+      (scale_by_half && !params.depth) || g_renderer->GetEFBScale() != 1 || y_scale > 1.0f;
+
+  // Because the shader uses gl_FragCoord and we read it back, we must render to the lower-left.
+  const u32 render_width = bytes_per_row / sizeof(u32);
+  const u32 render_height = num_blocks_y;
+  const auto encode_rect = MathUtil::Rectangle<int>(0, 0, render_width, render_height);
+
+  // Render to GPU texture, and then copy to CPU-accessible texture.
+  g_renderer->SetAndDiscardFramebuffer(m_efb_encoding_framebuffer.get());
+  g_renderer->SetViewportAndScissor(encode_rect);
+  g_renderer->SetPipeline(copy_pipeline);
+  g_renderer->SetTexture(0, src_texture);
+  g_renderer->SetSamplerState(0, linear_filter ? RenderState::GetLinearSamplerState() :
+                                                 RenderState::GetPointSamplerState());
+  g_renderer->Draw(0, 3);
+  dst->CopyFromTexture(m_efb_encoding_texture.get(), encode_rect, 0, 0, encode_rect);
+  g_renderer->EndUtilityDrawing();
+
+  // Flush if there's sufficient draws between this copy and the last.
+  g_vertex_manager->OnEFBCopyToRAM();
+}
+
+bool TextureCacheBase::ConvertTexture(TCacheEntry* entry, TCacheEntry* unconverted,
+                                      const void* palette, TLUTFormat format)
+{
+  DEBUG_ASSERT(entry->texture->GetConfig().IsRenderTarget() && entry->framebuffer);
+  if (!g_ActiveConfig.backend_info.bSupportsPaletteConversion)
+  {
+    ERROR_LOG(VIDEO, "Backend does not support palette conversion!");
+    return false;
+  }
+
+  g_renderer->BeginUtilityDrawing();
+
+  const u32 palette_size = unconverted->format == TextureFormat::I4 ? 32 : 512;
+  u32 texel_buffer_offset;
+  if (!g_vertex_manager->UploadTexelBuffer(palette, palette_size,
+                                           TexelBufferFormat::TEXEL_BUFFER_FORMAT_R16_UINT,
+                                           &texel_buffer_offset))
+  {
+    ERROR_LOG(VIDEO, "Texel buffer upload failed");
+    return false;
+  }
+
+  struct Uniforms
+  {
+    float multiplier;
+    u32 texel_buffer_offset;
+    u32 pad[2];
+  };
+  static_assert(std::is_standard_layout<Uniforms>::value);
+  Uniforms uniforms = {};
+  uniforms.multiplier = unconverted->format == TextureFormat::I4 ? 15.0f : 255.0f;
+  uniforms.texel_buffer_offset = texel_buffer_offset;
+  g_vertex_manager->UploadUtilityUniforms(&uniforms, sizeof(uniforms));
+
+  g_renderer->SetAndDiscardFramebuffer(entry->framebuffer.get());
+  g_renderer->SetViewportAndScissor(entry->texture->GetRect());
+  g_renderer->SetPipeline(g_shader_cache->GetPaletteConversionPipeline(format));
+  g_renderer->SetTexture(1, unconverted->texture.get());
+  g_renderer->SetSamplerState(1, RenderState::GetPointSamplerState());
+  g_renderer->Draw(0, 3);
+  g_renderer->EndUtilityDrawing();
+  entry->texture->FinishedRendering();
+  return true;
+}
+
+bool TextureCacheBase::DecodeTextureOnGPU(TCacheEntry* entry, u32 dst_level, const u8* data,
+                                          u32 data_size, TextureFormat format, u32 width,
+                                          u32 height, u32 aligned_width, u32 aligned_height,
+                                          u32 row_stride, const u8* palette,
+                                          TLUTFormat palette_format)
+{
+  const auto* info = TextureConversionShaderTiled::GetDecodingShaderInfo(format);
+  if (!info)
+    return false;
+
+  const AbstractShader* shader = g_shader_cache->GetTextureDecodingShader(format, palette_format);
+  if (!shader)
+    return false;
+
+  // Copy to GPU-visible buffer, aligned to the data type.
+  const u32 bytes_per_buffer_elem =
+      VertexManagerBase::GetTexelBufferElementSize(info->buffer_format);
+
+  // Allocate space in stream buffer, and copy texture + palette across.
+  u32 src_offset = 0, palette_offset = 0;
+  if (info->palette_size > 0)
+  {
+    if (!g_vertex_manager->UploadTexelBuffer(data, data_size, info->buffer_format, &src_offset,
+                                             palette, info->palette_size,
+                                             TEXEL_BUFFER_FORMAT_R16_UINT, &palette_offset))
+    {
+      return false;
+    }
+  }
+  else
+  {
+    if (!g_vertex_manager->UploadTexelBuffer(data, data_size, info->buffer_format, &src_offset))
+      return false;
+  }
+
+  // Set up uniforms.
+  struct Uniforms
+  {
+    u32 dst_width, dst_height;
+    u32 src_width, src_height;
+    u32 src_offset, src_row_stride;
+    u32 palette_offset, unused;
+  } uniforms = {width,          height,     aligned_width,
+                aligned_height, src_offset, row_stride / bytes_per_buffer_elem,
+                palette_offset};
+  g_vertex_manager->UploadUtilityUniforms(&uniforms, sizeof(uniforms));
+  g_renderer->SetComputeImageTexture(m_decoding_texture.get(), false, true);
+
+  auto dispatch_groups =
+      TextureConversionShaderTiled::GetDispatchCount(info, aligned_width, aligned_height);
+  g_renderer->DispatchComputeShader(shader, dispatch_groups.first, dispatch_groups.second, 1);
+
+  // Copy from decoding texture -> final texture
+  // This is because we don't want to have to create compute view for every layer
+  const auto copy_rect = entry->texture->GetConfig().GetMipRect(dst_level);
+  entry->texture->CopyRectangleFromTexture(m_decoding_texture.get(), copy_rect, 0, 0, copy_rect, 0,
+                                           dst_level);
+  entry->texture->FinishedRendering();
+  return true;
+}
+
 u32 TextureCacheBase::TCacheEntry::BytesPerRow() const
 {
   const u32 blockW = TexDecoder_GetBlockWidthInTexels(format.texfmt);
@@ -2362,3 +2626,9 @@ u64 TextureCacheBase::TCacheEntry::CalculateHash() const
     return temp_hash;
   }
 }
+
+TextureCacheBase::TexPoolEntry::TexPoolEntry(std::unique_ptr<AbstractTexture> tex,
+                                             std::unique_ptr<AbstractFramebuffer> fb)
+    : texture(std::move(tex)), framebuffer(std::move(fb))
+{
+}