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_copy(GLushort *dst, GLushort *src, GLuint n);
  39
  40 extern void
  41 _mesa_swap4_copy(GLuint *dst, GLuint *src, GLuint n);
  42
  43 static inline void
  44 _mesa_swap2(GLushort *p, GLuint n)
  45 {
  46    _mesa_swap2_copy(p, p, n);
  47 }
  48
  49 static inline void
  50 _mesa_swap4(GLuint *p, GLuint n)
  51 {
  52    _mesa_swap4_copy(p, p, n);
  53 }
  54
  55 extern GLintptr
  56 _mesa_image_offset( GLuint dimensions,
  57                     const struct gl_pixelstore_attrib *packing,
  58                     GLsizei width, GLsizei height,
  59                     GLenum format, GLenum type,
  60                     GLint img, GLint row, GLint column );
  61
  62 extern GLvoid *
  63 _mesa_image_address( GLuint dimensions,
  64                      const struct gl_pixelstore_attrib *packing,
  65                      const GLvoid *image,
  66                      GLsizei width, GLsizei height,
  67                      GLenum format, GLenum type,
  68                      GLint img, GLint row, GLint column );
  69
  70 extern GLvoid *
  71 _mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
  72                        const GLvoid *image,
  73                        GLsizei width,
  74                        GLenum format, GLenum type,
  75                        GLint column );
  76
  77 extern GLvoid *
  78 _mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
  79                        const GLvoid *image,
  80                        GLsizei width, GLsizei height,
  81                        GLenum format, GLenum type,
  82                        GLint row, GLint column );
  83
  84 extern GLvoid *
  85 _mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
  86                        const GLvoid *image,
  87                        GLsizei width, GLsizei height,
  88                        GLenum format, GLenum type,
  89                        GLint img, GLint row, GLint column );
  90
  91
  92 extern GLint
  93 _mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
  94                         GLint width, GLenum format, GLenum type );
  95
  96
  97 extern GLint
  98 _mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
  99                           GLint width, GLint height,
 100                           GLenum format, GLenum type );
 101
 102
 103 extern void
 104 _mesa_expand_bitmap(GLsizei width, GLsizei height,
 105                     const struct gl_pixelstore_attrib *unpack,
 106                     const GLubyte *bitmap,
 107                     GLubyte *destBuffer, GLint destStride,
 108                     GLubyte onValue);
 109
 110
 111 extern void
 112 _mesa_convert_colors(GLenum srcType, const GLvoid *src,
 113                      GLenum dstType, GLvoid *dst,
 114                      GLuint count, const GLubyte mask[]);
 115
 116
 117 extern GLboolean
 118 _mesa_clip_drawpixels(const struct gl_context *ctx,
 119                       GLint *destX, GLint *destY,
 120                       GLsizei *width, GLsizei *height,
 121                       struct gl_pixelstore_attrib *unpack);
 122
 123
 124 extern GLboolean
 125 _mesa_clip_readpixels(const struct gl_context *ctx,
 126                       GLint *srcX, GLint *srcY,
 127                       GLsizei *width, GLsizei *height,
 128                       struct gl_pixelstore_attrib *pack);
 129
 130 extern GLboolean
 131 _mesa_clip_copytexsubimage(const struct gl_context *ctx,
 132                            GLint *destX, GLint *destY,
 133                            GLint *srcX, GLint *srcY,
 134                            GLsizei *width, GLsizei *height);
 135
 136 extern GLboolean
 137 _mesa_clip_to_region(GLint xmin, GLint ymin,
 138                      GLint xmax, GLint ymax,
 139                      GLint *x, GLint *y,
 140                      GLsizei *width, GLsizei *height );
 141
 142 extern GLboolean
 143 _mesa_clip_blit(struct gl_context *ctx,
 144                 const struct gl_framebuffer *readFb,
 145                 const struct gl_framebuffer *drawFb,
 146                 GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
 147                 GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1);
 148
 149
 150 #endif