src/mesa/main/image.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef IMAGE_H
  27 #define IMAGE_H
  28
  29
  30 #include "glheader.h"
  31 #include "compiler.h"
  32
  33 struct gl_context;
  34 struct gl_pixelstore_attrib;
  35 struct gl_framebuffer;
  36
  37 extern void
  38 _mesa_swap2(GLushort *p, GLuint n);
  39
  40 extern void
  41 _mesa_swap4(GLuint *p, GLuint n);
  42
  43
  44 extern GLintptr
  45 _mesa_image_offset( GLuint dimensions,
  46                     const struct gl_pixelstore_attrib *packing,
  47                     GLsizei width, GLsizei height,
  48                     GLenum format, GLenum type,
  49                     GLint img, GLint row, GLint column );
  50
  51 extern GLvoid *
  52 _mesa_image_address( GLuint dimensions,
  53                      const struct gl_pixelstore_attrib *packing,
  54                      const GLvoid *image,
  55                      GLsizei width, GLsizei height,
  56                      GLenum format, GLenum type,
  57                      GLint img, GLint row, GLint column );
  58
  59 extern GLvoid *
  60 _mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
  61                        const GLvoid *image,
  62                        GLsizei width,
  63                        GLenum format, GLenum type,
  64                        GLint column );
  65
  66 extern GLvoid *
  67 _mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
  68                        const GLvoid *image,
  69                        GLsizei width, GLsizei height,
  70                        GLenum format, GLenum type,
  71                        GLint row, GLint column );
  72
  73 extern GLvoid *
  74 _mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
  75                        const GLvoid *image,
  76                        GLsizei width, GLsizei height,
  77                        GLenum format, GLenum type,
  78                        GLint img, GLint row, GLint column );
  79
  80
  81 extern GLint
  82 _mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
  83                         GLint width, GLenum format, GLenum type );
  84
  85
  86 extern GLint
  87 _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
  88                           GLint width, GLint height,
  89                           GLenum format, GLenum type );
  90
  91
  92 extern void
  93 _mesa_expand_bitmap(GLsizei width, GLsizei height,
  94                     const struct gl_pixelstore_attrib *unpack,
  95                     const GLubyte *bitmap,
  96                     GLubyte *destBuffer, GLint destStride,
  97                     GLubyte onValue);
  98
  99
 100 extern void
 101 _mesa_convert_colors(GLenum srcType, const GLvoid *src,
 102                      GLenum dstType, GLvoid *dst,
 103                      GLuint count, const GLubyte mask[]);
 104
 105
 106 extern GLboolean
 107 _mesa_clip_drawpixels(const struct gl_context *ctx,
 108                       GLint *destX, GLint *destY,
 109                       GLsizei *width, GLsizei *height,
 110                       struct gl_pixelstore_attrib *unpack);
 111
 112
 113 extern GLboolean
 114 _mesa_clip_readpixels(const struct gl_context *ctx,
 115                       GLint *srcX, GLint *srcY,
 116                       GLsizei *width, GLsizei *height,
 117                       struct gl_pixelstore_attrib *pack);
 118
 119 extern GLboolean
 120 _mesa_clip_copytexsubimage(const struct gl_context *ctx,
 121                            GLint *destX, GLint *destY,
 122                            GLint *srcX, GLint *srcY,
 123                            GLsizei *width, GLsizei *height);
 124
 125 extern GLboolean
 126 _mesa_clip_to_region(GLint xmin, GLint ymin,
 127                      GLint xmax, GLint ymax,
 128                      GLint *x, GLint *y,
 129                      GLsizei *width, GLsizei *height );
 130
 131 extern GLboolean
 132 _mesa_clip_blit(struct gl_context *ctx,
 133                 const struct gl_framebuffer *readFb,
 134                 const struct gl_framebuffer *drawFb,
 135                 GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
 136                 GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1);
 137
 138 void
 139 _mesa_swap_bytes_2d_image(GLenum format, GLenum type,
 140                           const struct gl_pixelstore_attrib *packing,
 141                           GLsizei width, GLsizei height,
 142                           GLvoid *dst, const GLvoid *src);
 143
 144 #endif