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      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 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
    135