kc3-lang/angle/src/libGLESv2/Blit.h

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• Author : daniel@transgaming.com
  Date : 2011-04-22 11:33:27
  Hash : eef864ad
  Message : Use StretchRect to speed up simple blits. Fixed copy position transformation. TRAC #16494 Signed-off-by: Daniel Koch Author: Nicolas Capens git-svn-id: https://angleproject.googlecode.com/svn/trunk@618 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/Blit.h

• //
  // Copyright (c) 2002-2010 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.
  //
  
  // Blit.cpp: Surface copy utility class.
  
  #ifndef LIBGLESV2_BLIT_H_
  #define LIBGLESV2_BLIT_H_
  
  #include <map>
  
  #define GL_APICALL
  #include <GLES2/gl2.h>
  
  #include <d3d9.h>
  
  #include "common/angleutils.h"
  
  namespace gl
  {
  class Context;
  
  class Blit
  {
    public:
      explicit Blit(Context *context);
      ~Blit();
  
      // Copy from source surface to dest surface.
      // sourceRect, xoffset, yoffset are in D3D coordinates (0,0 in upper-left)
      bool copy(IDirect3DSurface9 *source, const RECT &sourceRect, GLenum destFormat, GLint xoffset, GLint yoffset, IDirect3DSurface9 *dest);
  
      // Copy from source surface to dest surface.
      // sourceRect, xoffset, yoffset are in D3D coordinates (0,0 in upper-left)
      // source is interpreted as RGBA and destFormat specifies the desired result format. For example, if destFormat = GL_RGB, the alpha channel will be forced to 0.
      bool formatConvert(IDirect3DSurface9 *source, const RECT &sourceRect, GLenum destFormat, GLint xoffset, GLint yoffset, IDirect3DSurface9 *dest);
  
      // 2x2 box filter sample from source to dest.
      // Requires that source is RGB(A) and dest has the same format as source.
      bool boxFilter(IDirect3DSurface9 *source, IDirect3DSurface9 *dest);
  
    private:
      Context *mContext;
  
      IDirect3DVertexBuffer9 *mQuadVertexBuffer;
      IDirect3DVertexDeclaration9 *mQuadVertexDeclaration;
  
      void initGeometry();
  
      bool setFormatConvertShaders(GLenum destFormat);
  
      IDirect3DTexture9 *copySurfaceToTexture(IDirect3DSurface9 *surface, const RECT &sourceRect);
      void setViewport(const RECT &sourceRect, GLint xoffset, GLint yoffset);
      void setCommonBlitState();
      RECT getSurfaceRect(IDirect3DSurface9 *surface) const;
  
      // This enum is used to index mCompiledShaders and mShaderSource.
      enum ShaderId
      {
          SHADER_VS_STANDARD,
          SHADER_VS_FLIPY,
          SHADER_PS_PASSTHROUGH,
          SHADER_PS_LUMINANCE,
          SHADER_PS_COMPONENTMASK,
          SHADER_COUNT
      };
  
      static const char * const mShaderSource[];
  
      // This actually contains IDirect3DVertexShader9 or IDirect3DPixelShader9 casted to IUnknown.
      IUnknown *mCompiledShaders[SHADER_COUNT];
  
      template <class D3DShaderType>
      bool setShader(ShaderId source, const char *profile,
                     HRESULT (WINAPI IDirect3DDevice9::*createShader)(const DWORD *, D3DShaderType **),
                     HRESULT (WINAPI IDirect3DDevice9::*setShader)(D3DShaderType*));
  
      bool setVertexShader(ShaderId shader);
      bool setPixelShader(ShaderId shader);
      void render();
  
      void saveState();
      void restoreState();
      IDirect3DStateBlock9 *mSavedStateBlock;
      IDirect3DSurface9 *mSavedRenderTarget;
      IDirect3DSurface9 *mSavedDepthStencil;
  
      DISALLOW_COPY_AND_ASSIGN(Blit);
  };
  }
  
  #endif   // LIBGLESV2_BLIT_H_