1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * 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
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27 #ifndef SP_SETUP_H
28 #define SP_SETUP_H
29
30 struct setup_context;
31 struct softpipe_context;
32
33 /**
34 * Attribute interpolation mode
35 */
36 enum sp_interp_mode {
37 SP_INTERP_POS, /**< special case for frag position */
38 SP_INTERP_CONSTANT,
39 SP_INTERP_LINEAR,
40 SP_INTERP_PERSPECTIVE
41 };
42
43
44 struct sp_setup_info {
45 unsigned valid;
46 struct {
47 unsigned interp:8; /**< SP_INTERP_X */
48 int src_index:8;
49 } attrib[PIPE_MAX_SHADER_OUTPUTS];
50 };
51
52 void
53 sp_setup_tri(struct setup_context *setup,
54 const float (*v0)[4],
55 const float (*v1)[4],
56 const float (*v2)[4]);
57
58 void
59 sp_setup_line(struct setup_context *setup,
60 const float (*v0)[4],
61 const float (*v1)[4]);
62
63 void
64 sp_setup_point( struct setup_context *setup,
65 const float (*v0)[4] );
66
67 static inline unsigned
sp_clamp_viewport_idx(int idx)68 sp_clamp_viewport_idx(int idx)
69 {
70 return (PIPE_MAX_VIEWPORTS > idx && idx >= 0) ? idx : 0;
71 }
72
73 struct setup_context *sp_setup_create_context( struct softpipe_context *softpipe );
74 void sp_setup_prepare( struct setup_context *setup );
75 void sp_setup_destroy_context( struct setup_context *setup );
76
77 #endif
78