VideoBackends: Add AbstractStagingTexture class

Can be used for asynchronous readback or upload of textures.

1 files changed, 21 insertions, 2 deletions

diff --git a/Source/Core/VideoCommon/AbstractTexture.cpp b/Source/Core/VideoCommon/AbstractTexture.cpp
index 9fa099e602..7e09be5344 100644
--- a/Source/Core/VideoCommon/AbstractTexture.cpp
+++ b/Source/Core/VideoCommon/AbstractTexture.cpp
@@ -100,7 +100,7 @@ AbstractTexture::MapRegionImpl(u32 level, u32 x, u32 y, u32 width, u32 height)
   return {};
 }
 
-bool AbstractTexture::IsCompressedHostTextureFormat(AbstractTextureFormat format)
+bool AbstractTexture::IsCompressedFormat(AbstractTextureFormat format)
 {
   switch (format)
   {
@@ -115,7 +115,7 @@ bool AbstractTexture::IsCompressedHostTextureFormat(AbstractTextureFormat format
   }
 }
 
-size_t AbstractTexture::CalculateHostTextureLevelPitch(AbstractTextureFormat format, u32 row_length)
+size_t AbstractTexture::CalculateStrideForFormat(AbstractTextureFormat format, u32 row_length)
 {
   switch (format)
   {
@@ -134,6 +134,25 @@ size_t AbstractTexture::CalculateHostTextureLevelPitch(AbstractTextureFormat for
   }
 }
 
+size_t AbstractTexture::GetTexelSizeForFormat(AbstractTextureFormat format)
+{
+  switch (format)
+  {
+  case AbstractTextureFormat::DXT1:
+    return 8;
+  case AbstractTextureFormat::DXT3:
+  case AbstractTextureFormat::DXT5:
+  case AbstractTextureFormat::BPTC:
+    return 16;
+  case AbstractTextureFormat::RGBA8:
+  case AbstractTextureFormat::BGRA8:
+    return 4;
+  default:
+    PanicAlert("Unhandled texture format.");
+    return 0;
+  }
+}
+
 const TextureConfig& AbstractTexture::GetConfig() const
 {
   return m_config;