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

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• Hash : 50c526d2
  Author :
  Date : 2011-08-10T05:19:44
  

  Add support for DXT3 and DXT5
  
  TEST=none
  BUG=none
  Review URL: http://codereview.appspot.com/4809068
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@721 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/libGLESv2/Texture.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.
  //
  
  // Texture.h: Defines the abstract gl::Texture class and its concrete derived
  // classes Texture2D and TextureCubeMap. Implements GL texture objects and
  // related functionality. [OpenGL ES 2.0.24] section 3.7 page 63.
  
  #ifndef LIBGLESV2_TEXTURE_H_
  #define LIBGLESV2_TEXTURE_H_
  
  #include <vector>
  
  #define GL_APICALL
  #include <GLES2/gl2.h>
  #include <d3d9.h>
  
  #include "libGLESv2/Renderbuffer.h"
  #include "libGLESv2/RefCountObject.h"
  #include "libGLESv2/utilities.h"
  #include "common/debug.h"
  
  namespace egl
  {
  class Surface;
  }
  
  namespace gl
  {
  class Blit;
  class Framebuffer;
  
  enum
  {
      // These are the maximums the implementation can support
      // The actual GL caps are limited by the device caps
      // and should be queried from the Context
      IMPLEMENTATION_MAX_TEXTURE_SIZE = 16384,
      IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE = 16384,
  
      IMPLEMENTATION_MAX_TEXTURE_LEVELS = 15   // 1+log2 of MAX_TEXTURE_SIZE
  };
  
  class Texture : public RefCountObject
  {
    public:
      explicit Texture(GLuint id);
  
      virtual ~Texture();
  
      virtual GLenum getTarget() const = 0;
  
      bool setMinFilter(GLenum filter);
      bool setMagFilter(GLenum filter);
      bool setWrapS(GLenum wrap);
      bool setWrapT(GLenum wrap);
  
      GLenum getMinFilter() const;
      GLenum getMagFilter() const;
      GLenum getWrapS() const;
      GLenum getWrapT() const;
  
      virtual GLsizei getWidth() const = 0;
      virtual GLsizei getHeight() const = 0;
      virtual GLenum getInternalFormat() const = 0;
      virtual GLenum getType() const = 0;
      virtual D3DFORMAT getD3DFormat() const = 0;
  
      virtual bool isComplete() const = 0;
      virtual bool isCompressed() const = 0;
  
      IDirect3DBaseTexture9 *getTexture();
      virtual Renderbuffer *getRenderbuffer(GLenum target) = 0;
  
      virtual void generateMipmaps() = 0;
      virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source) = 0;
  
      bool isDirtyParameter() const;
      bool isDirtyImage() const;
      void resetDirty();
      unsigned int getSerial() const;
  
      static const GLuint INCOMPLETE_TEXTURE_ID = static_cast<GLuint>(-1);   // Every texture takes an id at creation time. The value is arbitrary because it is never registered with the resource manager.
  
    protected:
      friend class Colorbuffer;
  
      // Helper structure representing a single image layer
      struct Image
      {
          Image();
          ~Image();
  
          bool isRenderable() const;
          D3DFORMAT getD3DFormat() const;
  
          GLsizei width;
          GLsizei height;
          GLenum format;
          GLenum type;
  
          bool dirty;
  
          IDirect3DSurface9 *surface;
      };
  
      void setImage(GLint unpackAlignment, const void *pixels, Image *image);
      bool subImage(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels, Image *image);
      void setCompressedImage(GLsizei imageSize, const void *pixels, Image *image);
      bool subImageCompressed(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels, Image *image);
      void copyToImage(Image *image, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, IDirect3DSurface9 *renderTarget);
  
      GLint creationLevels(GLsizei width, GLsizei height, GLint maxlevel) const;
      GLint creationLevels(GLsizei size, GLint maxlevel) const;
  
      virtual IDirect3DBaseTexture9 *getBaseTexture() const = 0;
      virtual void createTexture() = 0;
      virtual void updateTexture() = 0;
      virtual void convertToRenderTarget() = 0;
      virtual IDirect3DSurface9 *getRenderTarget(GLenum target) = 0;
  
      void createSurface(Image *image);
  
      Blit *getBlitter();
  
      int levelCount() const;
  
      GLenum mMinFilter;
      GLenum mMagFilter;
      GLenum mWrapS;
      GLenum mWrapT;
      bool mDirtyParameter;
  
      bool mDirtyImage;
  
      bool mIsRenderable;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture);
  
      void loadImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type,
                         GLint unpackAlignment, const void *input, std::size_t outputPitch, void *output, D3DSURFACE_DESC *description) const;
  
      void loadAlphaImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                              int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadAlphaFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                   int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadAlphaHalfFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                       int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadLuminanceImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                  int inputPitch, const void *input, size_t outputPitch, void *output, bool native) const;
      void loadLuminanceFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                       int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadLuminanceHalfFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                           int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadLuminanceAlphaImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                       int inputPitch, const void *input, size_t outputPitch, void *output, bool native) const;
      void loadLuminanceAlphaFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                            int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadLuminanceAlphaHalfFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                                int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBUByteImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                 int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGB565ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                               int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                 int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBHalfFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                     int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBAUByteImageDataSSE2(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                      int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBAUByteImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                  int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBA4444ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                 int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBA5551ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                 int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBAFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                  int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadRGBAHalfFloatImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                      int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadBGRAImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                             int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadCompressedImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                   int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadDXT1ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                             int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadDXT3ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                             int inputPitch, const void *input, size_t outputPitch, void *output) const;
      void loadDXT5ImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                             int inputPitch, const void *input, size_t outputPitch, void *output) const;
  
      static unsigned int issueSerial();
  
      const unsigned int mSerial;
  
      static unsigned int mCurrentSerial;
  };
  
  class Texture2D : public Texture
  {
    public:
      explicit Texture2D(GLuint id);
  
      ~Texture2D();
  
      virtual GLenum getTarget() const;
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getType() const;
      virtual D3DFORMAT getD3DFormat() const;
  
      void setImage(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setCompressedImage(GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels);
      void subImage(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void subImageCompressed(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels);
      void copyImage(GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
      void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
  
      virtual bool isComplete() const;
      virtual bool isCompressed() const;
      virtual void bindTexImage(egl::Surface *surface);
      virtual void releaseTexImage();
  
      virtual void generateMipmaps();
  
      virtual Renderbuffer *getRenderbuffer(GLenum target);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Texture2D);
  
      virtual IDirect3DBaseTexture9 *getBaseTexture() const;
      virtual void createTexture();
      virtual void updateTexture();
      virtual void convertToRenderTarget();
      virtual IDirect3DSurface9 *getRenderTarget(GLenum target);
  
      void redefineTexture(GLint level, GLenum format, GLsizei width, GLsizei height, GLenum type, bool force);
      void commitRect(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height);
  
      Image mImageArray[IMPLEMENTATION_MAX_TEXTURE_LEVELS];
  
      IDirect3DTexture9 *mTexture;
      egl::Surface *mSurface;
  
      BindingPointer<Renderbuffer> mColorbufferProxy;
  };
  
  class TextureCubeMap : public Texture
  {
    public:
      explicit TextureCubeMap(GLuint id);
  
      ~TextureCubeMap();
  
      virtual GLenum getTarget() const;
      
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual GLenum getType() const;
      virtual D3DFORMAT getD3DFormat() const;
  
      void setImagePosX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setImageNegX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setImagePosY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setImageNegY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setImagePosZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void setImageNegZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
  
      void setCompressedImage(GLenum face, GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels);
  
      void subImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void subImageCompressed(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels);
      void copyImage(GLenum target, GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
      virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
  
      virtual bool isComplete() const;
      virtual bool isCompressed() const;
  
      virtual void generateMipmaps();
  
      virtual Renderbuffer *getRenderbuffer(GLenum target);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(TextureCubeMap);
  
      virtual IDirect3DBaseTexture9 *getBaseTexture() const;
      virtual void createTexture();
      virtual void updateTexture();
      virtual void convertToRenderTarget();
      virtual IDirect3DSurface9 *getRenderTarget(GLenum target);
  
      // face is one of the GL_TEXTURE_CUBE_MAP_* enumerants.
      // Returns NULL if the call underlying Direct3D call fails.
      IDirect3DSurface9 *getCubeMapSurface(GLenum face, unsigned int level);
  
      static unsigned int faceIndex(GLenum face);
  
      bool isCubeComplete() const;
  
      void setImage(int faceIndex, GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
      void commitRect(GLenum faceTarget, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height);
      void redefineTexture(int faceIndex, GLint level, GLenum format, GLsizei width, GLsizei height, GLenum type);
  
      Image mImageArray[6][IMPLEMENTATION_MAX_TEXTURE_LEVELS];
  
      IDirect3DCubeTexture9 *mTexture;
  
      BindingPointer<Renderbuffer> mFaceProxies[6];
  };
  }
  
  #endif   // LIBGLESV2_TEXTURE_H_
  

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