image.h revision 18d2822905ac3187318bd662f80c2836bdfa7c1f 
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 "mtypes.h"
31
32
33extern void
34_mesa_swap2( GLushort *p, GLuint n );
35
36extern void
37_mesa_swap4( GLuint *p, GLuint n );
38
39extern GLint
40_mesa_sizeof_type( GLenum type );
41
42extern GLint
43_mesa_sizeof_packed_type( GLenum type );
44
45extern GLint
46_mesa_components_in_format( GLenum format );
47
48extern GLint
49_mesa_bytes_per_pixel( GLenum format, GLenum type );
50
51extern GLboolean
52_mesa_is_legal_format_and_type( GLcontext *ctx, GLenum format, GLenum type );
53
54
55extern GLvoid *
56_mesa_image_address( GLuint dimensions,
57                     const struct gl_pixelstore_attrib *packing,
58                     const GLvoid *image,
59                     GLsizei width, GLsizei height,
60                     GLenum format, GLenum type,
61                     GLint img, GLint row, GLint column );
62
63extern GLvoid *
64_mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
65                       const GLvoid *image,
66                       GLsizei width,
67                       GLenum format, GLenum type,
68                       GLint column );
69
70extern GLvoid *
71_mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
72                       const GLvoid *image,
73                       GLsizei width, GLsizei height,
74                       GLenum format, GLenum type,
75                       GLint row, GLint column );
76
77extern GLvoid *
78_mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
79                       const GLvoid *image,
80                       GLsizei width, GLsizei height,
81                       GLenum format, GLenum type,
82                       GLint img, GLint row, GLint column );
83
84
85extern GLint
86_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
87                        GLint width, GLenum format, GLenum type );
88
89
90extern GLint
91_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
92                          GLint width, GLint height,
93                          GLenum format, GLenum type );
94
95extern void
96_mesa_unpack_polygon_stipple( const GLubyte *pattern, GLuint dest[32],
97                              const struct gl_pixelstore_attrib *unpacking );
98
99
100extern void
101_mesa_pack_polygon_stipple( const GLuint pattern[32], GLubyte *dest,
102                            const struct gl_pixelstore_attrib *packing );
103
104
105extern GLvoid *
106_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
107                     const struct gl_pixelstore_attrib *packing );
108
109extern void
110_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
111                   GLubyte *dest, const struct gl_pixelstore_attrib *packing );
112
113
114/** \name Pixel processing functions */
115/*@{*/
116
117extern void
118_mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4],
119                          GLfloat rScale, GLfloat gScale,
120                          GLfloat bScale, GLfloat aScale,
121                          GLfloat rBias, GLfloat gBias,
122                          GLfloat bBias, GLfloat aBias);
123
124extern void
125_mesa_map_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]);
126
127
128extern void
129_mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]);
130
131
132extern void
133_mesa_lookup_rgba_float(const struct gl_color_table *table,
134                        GLuint n, GLfloat rgba[][4]);
135
136extern void
137_mesa_lookup_rgba_ubyte(const struct gl_color_table *table,
138                        GLuint n, GLubyte rgba[][4]);
139
140
141extern void
142_mesa_map_ci_to_rgba(const GLcontext *ctx,
143                     GLuint n, const GLuint index[], GLfloat rgba[][4]);
144
145
146extern void
147_mesa_map_ci8_to_rgba8(const GLcontext *ctx, GLuint n, const GLubyte index[],
148                       GLubyte rgba[][4]);
149
150
151extern void
152_mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n,
153                           GLfloat depthValues[]);
154
155extern void
156_mesa_scale_and_bias_depth_uint(const GLcontext *ctx, GLuint n,
157                                GLuint depthValues[]);
158
159extern void
160_mesa_apply_rgba_transfer_ops(GLcontext *ctx, GLbitfield transferOps,
161                              GLuint n, GLfloat rgba[][4]);
162
163
164extern void
165_mesa_apply_ci_transfer_ops(const GLcontext *ctx, GLbitfield transferOps,
166                            GLuint n, GLuint indexes[]);
167
168
169extern void
170_mesa_apply_stencil_transfer_ops(const GLcontext *ctx, GLuint n,
171                                 GLstencil stencil[]);
172
173
174extern void
175_mesa_pack_rgba_span_float( GLcontext *ctx, GLuint n, GLfloat rgba[][4],
176                            GLenum dstFormat, GLenum dstType, GLvoid *dstAddr,
177                            const struct gl_pixelstore_attrib *dstPacking,
178                            GLbitfield transferOps );
179
180
181extern void
182_mesa_unpack_color_span_chan( GLcontext *ctx,
183                              GLuint n, GLenum dstFormat, GLchan dest[],
184                              GLenum srcFormat, GLenum srcType,
185                              const GLvoid *source,
186                              const struct gl_pixelstore_attrib *srcPacking,
187                              GLbitfield transferOps );
188
189
190extern void
191_mesa_unpack_color_span_float( GLcontext *ctx,
192                               GLuint n, GLenum dstFormat, GLfloat dest[],
193                               GLenum srcFormat, GLenum srcType,
194                               const GLvoid *source,
195                               const struct gl_pixelstore_attrib *srcPacking,
196                               GLbitfield transferOps );
197
198
199extern void
200_mesa_unpack_index_span( const GLcontext *ctx, GLuint n,
201                         GLenum dstType, GLvoid *dest,
202                         GLenum srcType, const GLvoid *source,
203                         const struct gl_pixelstore_attrib *srcPacking,
204                         GLbitfield transferOps );
205
206
207extern void
208_mesa_pack_index_span( const GLcontext *ctx, GLuint n,
209                       GLenum dstType, GLvoid *dest, const GLuint *source,
210                       const struct gl_pixelstore_attrib *dstPacking,
211                       GLbitfield transferOps );
212
213
214extern void
215_mesa_unpack_stencil_span( const GLcontext *ctx, GLuint n,
216                           GLenum dstType, GLvoid *dest,
217                           GLenum srcType, const GLvoid *source,
218                           const struct gl_pixelstore_attrib *srcPacking,
219                           GLbitfield transferOps );
220
221extern void
222_mesa_pack_stencil_span( const GLcontext *ctx, GLuint n,
223                         GLenum dstType, GLvoid *dest, const GLstencil *source,
224                         const struct gl_pixelstore_attrib *dstPacking );
225
226
227extern void
228_mesa_unpack_depth_span( const GLcontext *ctx, GLuint n,
229                         GLenum dstType, GLvoid *dest, GLuint depthMax,
230                         GLenum srcType, const GLvoid *source,
231                         const struct gl_pixelstore_attrib *srcPacking );
232
233extern void
234_mesa_pack_depth_span( const GLcontext *ctx, GLuint n, GLvoid *dest,
235                       GLenum dstType, const GLfloat *depthSpan,
236                       const struct gl_pixelstore_attrib *dstPacking );
237
238
239extern void
240_mesa_pack_depth_stencil_span(const GLcontext *ctx, GLuint n, GLuint *dest,
241                              const GLfloat *depthVals,
242                              const GLstencil *stencilVals,
243                              const struct gl_pixelstore_attrib *dstPacking);
244
245
246extern void *
247_mesa_unpack_image( GLuint dimensions,
248                    GLsizei width, GLsizei height, GLsizei depth,
249                    GLenum format, GLenum type, const GLvoid *pixels,
250                    const struct gl_pixelstore_attrib *unpack );
251
252
253extern void
254_mesa_convert_colors(GLenum srcType, const GLvoid *src,
255                     GLenum dstType, GLvoid *dst,
256                     GLuint count, const GLubyte mask[]);
257
258
259extern GLboolean
260_mesa_clip_drawpixels(const GLcontext *ctx,
261                      GLint *destX, GLint *destY,
262                      GLsizei *width, GLsizei *height,
263                      struct gl_pixelstore_attrib *unpack);
264
265
266extern GLboolean
267_mesa_clip_readpixels(const GLcontext *ctx,
268                      GLint *destX, GLint *destY,
269                      GLsizei *width, GLsizei *height,
270                      struct gl_pixelstore_attrib *pack);
271
272extern GLboolean
273_mesa_clip_to_region(GLint xmin, GLint ymin,
274                     GLint xmax, GLint ymax,
275                     GLint *x, GLint *y,
276                     GLsizei *width, GLsizei *height );
277
278#endif
279