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
  32 struct gl_context;
  33 struct gl_pixelstore_attrib;
  34
  35 extern void
  36 _mesa_swap2( GLushort *p, GLuint n );
  37
  38 extern void
  39 _mesa_swap4( GLuint *p, GLuint n );
  40
  41 extern GLintptr
  42 _mesa_image_offset( GLuint dimensions,
  43                     const struct gl_pixelstore_attrib *packing,
  44                     GLsizei width, GLsizei height,
  45                     GLenum format, GLenum type,
  46                     GLint img, GLint row, GLint column );
  47
  48 extern GLvoid *
  49 _mesa_image_address( GLuint dimensions,
  50                      const struct gl_pixelstore_attrib *packing,
  51                      const GLvoid *image,
  52                      GLsizei width, GLsizei height,
  53                      GLenum format, GLenum type,
  54                      GLint img, GLint row, GLint column );
  55
  56 extern GLvoid *
  57 _mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
  58                        const GLvoid *image,
  59                        GLsizei width,
  60                        GLenum format, GLenum type,
  61                        GLint column );
  62
  63 extern GLvoid *
  64 _mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
  65                        const GLvoid *image,
  66                        GLsizei width, GLsizei height,
  67                        GLenum format, GLenum type,
  68                        GLint row, GLint column );
  69
  70 extern GLvoid *
  71 _mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
  72                        const GLvoid *image,
  73                        GLsizei width, GLsizei height,
  74                        GLenum format, GLenum type,
  75                        GLint img, GLint row, GLint column );
  76
  77
  78 extern GLint
  79 _mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
  80                         GLint width, GLenum format, GLenum type );
  81
  82
  83 extern GLint
  84 _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
  85                           GLint width, GLint height,
  86                           GLenum format, GLenum type );
  87
  88
  89 extern void
  90 _mesa_expand_bitmap(GLsizei width, GLsizei height,
  91                     const struct gl_pixelstore_attrib *unpack,
  92                     const GLubyte *bitmap,
  93                     GLubyte *destBuffer, GLint destStride,
  94                     GLubyte onValue);
  95
  96
  97 extern void
  98 _mesa_convert_colors(GLenum srcType, const GLvoid *src,
  99                      GLenum dstType, GLvoid *dst,
 100                      GLuint count, const GLubyte mask[]);
 101
 102
 103 extern GLboolean
 104 _mesa_clip_drawpixels(const struct gl_context *ctx,
 105                       GLint *destX, GLint *destY,
 106                       GLsizei *width, GLsizei *height,
 107                       struct gl_pixelstore_attrib *unpack);
 108
 109
 110 extern GLboolean
 111 _mesa_clip_readpixels(const struct gl_context *ctx,
 112                       GLint *srcX, GLint *srcY,
 113                       GLsizei *width, GLsizei *height,
 114                       struct gl_pixelstore_attrib *pack);
 115
 116 extern GLboolean
 117 _mesa_clip_copytexsubimage(const struct gl_context *ctx,
 118                            GLint *destX, GLint *destY,
 119                            GLint *srcX, GLint *srcY,
 120                            GLsizei *width, GLsizei *height);
 121
 122 extern GLboolean
 123 _mesa_clip_to_region(GLint xmin, GLint ymin,
 124                      GLint xmax, GLint ymax,
 125                      GLint *x, GLint *y,
 126                      GLsizei *width, GLsizei *height );
 127
 128 extern GLboolean
 129 _mesa_clip_blit(struct gl_context *ctx,
 130                 GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
 131                 GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1);
 132
 133
 134 #endif