1 files changed, 98 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Clear11.h b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Clear11.h
new file mode 100755
index 000000000..1594027ec
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Clear11.h
@@ -0,0 +1,98 @@
+//
+// Copyright (c) 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.
+//
+
+// Clear11.h: Framebuffer clear utility class.
+
+#ifndef LIBANGLE_RENDERER_D3D_D3D11_CLEAR11_H_
+#define LIBANGLE_RENDERER_D3D_D3D11_CLEAR11_H_
+
+#include <map>
+#include <vector>
+
+#include "libANGLE/angletypes.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/Framebuffer.h"
+#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
+
+namespace rx
+{
+class Renderer11;
+class RenderTarget11;
+struct ClearParameters;
+
+class Clear11 : angle::NonCopyable
+{
+  public:
+    explicit Clear11(Renderer11 *renderer);
+    ~Clear11();
+
+    // Clears the framebuffer with the supplied clear parameters, assumes that the framebuffer is currently applied.
+    gl::Error clearFramebuffer(const ClearParameters &clearParams,
+                               const gl::FramebufferState &fboData);
+
+  private:
+    struct MaskedRenderTarget
+    {
+        bool colorMask[4];
+        RenderTarget11 *renderTarget;
+    };
+
+    ID3D11BlendState *getBlendState(const std::vector<MaskedRenderTarget> &rts);
+    ID3D11DepthStencilState *getDepthStencilState(const ClearParameters &clearParams);
+
+    struct ClearShader final : public angle::NonCopyable
+    {
+        ClearShader(DXGI_FORMAT colorType,
+                    const char *inputLayoutName,
+                    const BYTE *vsByteCode,
+                    size_t vsSize,
+                    const char *vsDebugName,
+                    const BYTE *psByteCode,
+                    size_t psSize,
+                    const char *psDebugName);
+        ~ClearShader();
+
+        d3d11::LazyInputLayout *inputLayout;
+        d3d11::LazyShader<ID3D11VertexShader> vertexShader;
+        d3d11::LazyShader<ID3D11PixelShader> pixelShader;
+    };
+
+    template <unsigned int vsSize, unsigned int psSize>
+    static ClearShader CreateClearShader(ID3D11Device *device, DXGI_FORMAT colorType, const BYTE(&vsByteCode)[vsSize], const BYTE(&psByteCode)[psSize]);
+
+    struct ClearBlendInfo
+    {
+        bool maskChannels[D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT][4];
+    };
+    typedef bool(*ClearBlendInfoComparisonFunction)(const ClearBlendInfo&, const ClearBlendInfo &);
+    typedef std::map<ClearBlendInfo, ID3D11BlendState*, ClearBlendInfoComparisonFunction> ClearBlendStateMap;
+
+    struct ClearDepthStencilInfo
+    {
+        bool clearDepth;
+        bool clearStencil;
+        UINT8 stencilWriteMask;
+    };
+    typedef bool(*ClearDepthStencilInfoComparisonFunction)(const ClearDepthStencilInfo&, const ClearDepthStencilInfo &);
+    typedef std::map<ClearDepthStencilInfo, ID3D11DepthStencilState*, ClearDepthStencilInfoComparisonFunction> ClearDepthStencilStateMap;
+
+    Renderer11 *mRenderer;
+
+    ClearBlendStateMap mClearBlendStates;
+
+    ClearShader *mFloatClearShader;
+    ClearShader *mUintClearShader;
+    ClearShader *mIntClearShader;
+
+    ClearDepthStencilStateMap mClearDepthStencilStates;
+
+    ID3D11Buffer *mVertexBuffer;
+    ID3D11RasterizerState *mRasterizerState;
+};
+
+}
+
+#endif // LIBANGLE_RENDERER_D3D_D3D11_CLEAR11_H_