src/mesa/main/image.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR 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 GLboolean
  42 _mesa_type_is_packed(GLenum type);
  43
  44 extern GLint
  45 _mesa_sizeof_type( GLenum type );
  46
  47 extern GLint
  48 _mesa_sizeof_packed_type( GLenum type );
  49
  50 extern GLint
  51 _mesa_components_in_format( GLenum format );
  52
  53 extern GLint
  54 _mesa_bytes_per_pixel( GLenum format, GLenum type );
  55
  56 extern GLboolean
  57 _mesa_is_legal_format_and_type(const struct gl_context *ctx,
  58                                GLenum format, GLenum type);
  59
  60 extern GLboolean
  61 _mesa_is_color_format(GLenum format);
  62
  63 extern GLboolean
  64 _mesa_is_index_format(GLenum format);
  65
  66 extern GLboolean
  67 _mesa_is_depth_format(GLenum format);
  68
  69 extern GLboolean
  70 _mesa_is_stencil_format(GLenum format);
  71
  72 extern GLboolean
  73 _mesa_is_ycbcr_format(GLenum format);
  74
  75 extern GLboolean
  76 _mesa_is_depthstencil_format(GLenum format);
  77
  78 extern GLboolean
  79 _mesa_is_depth_or_stencil_format(GLenum format);
  80
  81 extern GLboolean
  82 _mesa_is_dudv_format(GLenum format);
  83
  84 extern GLboolean
  85 _mesa_is_integer_format(GLenum format);
  86
  87 extern GLboolean
  88 _mesa_is_compressed_format(struct gl_context *ctx, GLenum format);
  89
  90 extern GLvoid *
  91 _mesa_image_address( GLuint dimensions,
  92                      const struct gl_pixelstore_attrib *packing,
  93                      const GLvoid *image,
  94                      GLsizei width, GLsizei height,
  95                      GLenum format, GLenum type,
  96                      GLint img, GLint row, GLint column );
  97
  98 extern GLvoid *
  99 _mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
 100                        const GLvoid *image,
 101                        GLsizei width,
 102                        GLenum format, GLenum type,
 103                        GLint column );
 104
 105 extern GLvoid *
 106 _mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
 107                        const GLvoid *image,
 108                        GLsizei width, GLsizei height,
 109                        GLenum format, GLenum type,
 110                        GLint row, GLint column );
 111
 112 extern GLvoid *
 113 _mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
 114                        const GLvoid *image,
 115                        GLsizei width, GLsizei height,
 116                        GLenum format, GLenum type,
 117                        GLint img, GLint row, GLint column );
 118
 119
 120 extern GLint
 121 _mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
 122                         GLint width, GLenum format, GLenum type );
 123
 124
 125 extern GLint
 126 _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
 127                           GLint width, GLint height,
 128                           GLenum format, GLenum type );
 129
 130
 131 extern void
 132 _mesa_expand_bitmap(GLsizei width, GLsizei height,
 133                     const struct gl_pixelstore_attrib *unpack,
 134                     const GLubyte *bitmap,
 135                     GLubyte *destBuffer, GLint destStride,
 136                     GLubyte onValue);
 137
 138
 139 extern void
 140 _mesa_convert_colors(GLenum srcType, const GLvoid *src,
 141                      GLenum dstType, GLvoid *dst,
 142                      GLuint count, const GLubyte mask[]);
 143
 144
 145 extern GLboolean
 146 _mesa_clip_drawpixels(const struct gl_context *ctx,
 147                       GLint *destX, GLint *destY,
 148                       GLsizei *width, GLsizei *height,
 149                       struct gl_pixelstore_attrib *unpack);
 150
 151
 152 extern GLboolean
 153 _mesa_clip_readpixels(const struct gl_context *ctx,
 154                       GLint *srcX, GLint *srcY,
 155                       GLsizei *width, GLsizei *height,
 156                       struct gl_pixelstore_attrib *pack);
 157
 158 extern GLboolean
 159 _mesa_clip_copytexsubimage(const struct gl_context *ctx,
 160                            GLint *destX, GLint *destY,
 161                            GLint *srcX, GLint *srcY,
 162                            GLsizei *width, GLsizei *height);
 163
 164 extern GLboolean
 165 _mesa_clip_to_region(GLint xmin, GLint ymin,
 166                      GLint xmax, GLint ymax,
 167                      GLint *x, GLint *y,
 168                      GLsizei *width, GLsizei *height );
 169
 170 extern GLboolean
 171 _mesa_clip_blit(struct gl_context *ctx,
 172                 GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
 173                 GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1);
 174
 175
 176 #endif