3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 _swrast_span_default_z( GLcontext
*ctx
, struct sw_span
*span
);
39 _swrast_span_interpolate_z( const GLcontext
*ctx
, struct sw_span
*span
);
42 _swrast_span_default_fog( GLcontext
*ctx
, struct sw_span
*span
);
45 _swrast_span_default_color( GLcontext
*ctx
, struct sw_span
*span
);
48 _swrast_span_default_texcoords( GLcontext
*ctx
, struct sw_span
*span
);
51 _swrast_compute_lambda(GLfloat dsdx
, GLfloat dsdy
, GLfloat dtdx
, GLfloat dtdy
,
52 GLfloat dqdx
, GLfloat dqdy
, GLfloat texW
, GLfloat texH
,
53 GLfloat s
, GLfloat t
, GLfloat q
, GLfloat invQ
);
56 _swrast_write_index_span( GLcontext
*ctx
, struct sw_span
*span
);
60 _swrast_write_rgba_span( GLcontext
*ctx
, struct sw_span
*span
);
64 _swrast_write_texture_span( GLcontext
*ctx
, struct sw_span
*span
);
68 _swrast_read_rgba_span( GLcontext
*ctx
, GLframebuffer
*buffer
,
69 GLuint n
, GLint x
, GLint y
, GLchan rgba
[][4] );
72 _swrast_read_index_span( GLcontext
*ctx
, GLframebuffer
*buffer
,
73 GLuint n
, GLint x
, GLint y
, GLuint indx
[] );