From f43d85921dc85ae586d69b21d28a7578835a55bd Mon Sep 17 00:00:00 2001
From: Stenzek <stenzek@gmail.com>
Date: Sun, 22 Oct 2017 00:49:40 +1000
Subject: VideoBackends: Add AbstractStagingTexture class

Can be used for asynchronous readback or upload of textures.
---
 Source/Core/VideoCommon/TextureConfig.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'Source/Core/VideoCommon/TextureConfig.cpp')

diff --git a/Source/Core/VideoCommon/TextureConfig.cpp b/Source/Core/VideoCommon/TextureConfig.cpp
index 7a6930c798..d8155d59b1 100644
--- a/Source/Core/VideoCommon/TextureConfig.cpp
+++ b/Source/Core/VideoCommon/TextureConfig.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "VideoCommon/TextureConfig.h"
+#include "VideoCommon/AbstractTexture.h"
 
 #include <tuple>
 
@@ -12,7 +13,28 @@ bool TextureConfig::operator==(const TextureConfig& o) const
          std::tie(o.width, o.height, o.levels, o.layers, o.format, o.rendertarget);
 }
 
+bool TextureConfig::operator!=(const TextureConfig& o) const
+{
+  return !operator==(o);
+}
+
 MathUtil::Rectangle<int> TextureConfig::GetRect() const
 {
   return {0, 0, static_cast<int>(width), static_cast<int>(height)};
 }
+
+MathUtil::Rectangle<int> TextureConfig::GetMipRect(u32 level) const
+{
+  return {0, 0, static_cast<int>(std::max(width >> level, 1u)),
+          static_cast<int>(std::max(height >> level, 1u))};
+}
+
+size_t TextureConfig::GetStride() const
+{
+  return AbstractTexture::CalculateStrideForFormat(format, width);
+}
+
+size_t TextureConfig::GetMipStride(u32 level) const
+{
+  return AbstractTexture::CalculateStrideForFormat(format, std::max(width >> level, 1u));
+}
-- 
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