1 files changed, 96 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/PixelTransfer11.h b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/PixelTransfer11.h
new file mode 100644
index 0000000000..bdb11b90ff
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/PixelTransfer11.h
@@ -0,0 +1,96 @@
+//
+// Copyright 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// PixelTransfer11.h:
+//   Buffer-to-Texture and Texture-to-Buffer data transfers.
+//   Used to implement pixel unpack and pixel pack buffers in ES3.
+
+#ifndef LIBANGLE_RENDERER_D3D_D3D11_PIXELTRANSFER11_H_
+#define LIBANGLE_RENDERER_D3D_D3D11_PIXELTRANSFER11_H_
+
+#include <GLES2/gl2.h>
+
+#include <map>
+
+#include "common/platform.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/renderer/d3d/d3d11/ResourceManager11.h"
+
+namespace gl
+{
+class Buffer;
+class Context;
+struct Box;
+struct Extents;
+struct PixelUnpackState;
+}  // namespace gl
+
+namespace rx
+{
+class Renderer11;
+class RenderTargetD3D;
+
+class PixelTransfer11
+{
+  public:
+    explicit PixelTransfer11(Renderer11 *renderer);
+    ~PixelTransfer11();
+
+    // unpack: the source buffer is stored in the unpack state, and buffer strides
+    // offset: the start of the data within the unpack buffer
+    // destRenderTarget: individual slice/layer of a target texture
+    // destinationFormat/sourcePixelsType: determines shaders + shader parameters
+    // destArea: the sub-section of destRenderTarget to copy to
+    angle::Result copyBufferToTexture(const gl::Context *context,
+                                      const gl::PixelUnpackState &unpack,
+                                      gl::Buffer *unpackBuffer,
+                                      unsigned int offset,
+                                      RenderTargetD3D *destRenderTarget,
+                                      GLenum destinationFormat,
+                                      GLenum sourcePixelsType,
+                                      const gl::Box &destArea);
+
+  private:
+    struct CopyShaderParams
+    {
+        unsigned int FirstPixelOffset;
+        unsigned int PixelsPerRow;
+        unsigned int RowStride;
+        unsigned int RowsPerSlice;
+        float PositionOffset[2];
+        float PositionScale[2];
+        int TexLocationOffset[2];
+        int TexLocationScale[2];
+        unsigned int FirstSlice;
+    };
+
+    static void setBufferToTextureCopyParams(const gl::Box &destArea,
+                                             const gl::Extents &destSize,
+                                             GLenum internalFormat,
+                                             const gl::PixelUnpackState &unpack,
+                                             unsigned int offset,
+                                             CopyShaderParams *parametersOut);
+
+    angle::Result loadResources(const gl::Context *context);
+    angle::Result buildShaderMap(const gl::Context *context);
+    const d3d11::PixelShader *findBufferToTexturePS(GLenum internalFormat) const;
+
+    Renderer11 *mRenderer;
+
+    bool mResourcesLoaded;
+    std::map<GLenum, d3d11::PixelShader> mBufferToTexturePSMap;
+    d3d11::VertexShader mBufferToTextureVS;
+    d3d11::GeometryShader mBufferToTextureGS;
+    d3d11::Buffer mParamsConstantBuffer;
+    CopyShaderParams mParamsData;
+
+    d3d11::RasterizerState mCopyRasterizerState;
+    d3d11::DepthStencilState mCopyDepthStencilState;
+};
+
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_D3D_D3D11_PIXELTRANSFER11_H_