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
  36 extern void
  37 _mesa_swap2_copy(GLushort *dst, GLushort *src, GLuint n);
  38
  39 extern void
  40 _mesa_swap4_copy(GLuint *dst, GLuint *src, GLuint n);
  41
  42 static inline void
  43 _mesa_swap2(GLushort *p, GLuint n)
  44 {
  45    _mesa_swap2_copy(p, p, n);
  46 }
  47
  48 static inline void
  49 _mesa_swap4(GLuint *p, GLuint n)
  50 {
  51    _mesa_swap4_copy(p, p, n);
  52 }
  53
  54 extern GLintptr
  55 _mesa_image_offset( GLuint dimensions,
  56                     const struct gl_pixelstore_attrib *packing,
  57                     GLsizei width, GLsizei height,
  58                     GLenum format, GLenum type,
  59                     GLint img, GLint row, GLint column );
  60
  61 extern GLvoid *
  62 _mesa_image_address( GLuint dimensions,
  63                      const struct gl_pixelstore_attrib *packing,
  64                      const GLvoid *image,
  65                      GLsizei width, GLsizei height,
  66                      GLenum format, GLenum type,
  67                      GLint img, GLint row, GLint column );
  68
  69 extern GLvoid *
  70 _mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
  71                        const GLvoid *image,
  72                        GLsizei width,
  73                        GLenum format, GLenum type,
  74                        GLint column );
  75
  76 extern GLvoid *
  77 _mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
  78                        const GLvoid *image,
  79                        GLsizei width, GLsizei height,
  80                        GLenum format, GLenum type,
  81                        GLint row, GLint column );
  82
  83 extern GLvoid *
  84 _mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
  85                        const GLvoid *image,
  86                        GLsizei width, GLsizei height,
  87                        GLenum format, GLenum type,
  88                        GLint img, GLint row, GLint column );
  89
  90
  91 extern GLint
  92 _mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
  93                         GLint width, GLenum format, GLenum type );
  94
  95
  96 extern GLint
  97 _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
  98                           GLint width, GLint height,
  99                           GLenum format, GLenum type );
 100
 101
 102 extern void
 103 _mesa_expand_bitmap(GLsizei width, GLsizei height,
 104                     const struct gl_pixelstore_attrib *unpack,
 105                     const GLubyte *bitmap,
 106                     GLubyte *destBuffer, GLint destStride,
 107                     GLubyte onValue);
 108
 109
 110 extern void
 111 _mesa_convert_colors(GLenum srcType, const GLvoid *src,
 112                      GLenum dstType, GLvoid *dst,
 113                      GLuint count, const GLubyte mask[]);
 114
 115
 116 extern GLboolean
 117 _mesa_clip_drawpixels(const struct gl_context *ctx,
 118                       GLint *destX, GLint *destY,
 119                       GLsizei *width, GLsizei *height,
 120                       struct gl_pixelstore_attrib *unpack);
 121
 122
 123 extern GLboolean
 124 _mesa_clip_readpixels(const struct gl_context *ctx,
 125                       GLint *srcX, GLint *srcY,
 126                       GLsizei *width, GLsizei *height,
 127                       struct gl_pixelstore_attrib *pack);
 128
 129 extern GLboolean
 130 _mesa_clip_copytexsubimage(const struct gl_context *ctx,
 131                            GLint *destX, GLint *destY,
 132                            GLint *srcX, GLint *srcY,
 133                            GLsizei *width, GLsizei *height);
 134
 135 extern GLboolean
 136 _mesa_clip_to_region(GLint xmin, GLint ymin,
 137                      GLint xmax, GLint ymax,
 138                      GLint *x, GLint *y,
 139                      GLsizei *width, GLsizei *height );
 140
 141 extern GLboolean
 142 _mesa_clip_blit(struct gl_context *ctx,
 143                 GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
 144                 GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1);
 145
 146
 147 #endif