1 /*
2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
3  Intel funded Tungsten Graphics to
4  develop this 3D driver.
5 
6  Permission is hereby granted, free of charge, to any person obtaining
7  a 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, sublicense, 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
16  portions of the Software.
17 
18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 
26  **********************************************************************/
27  /*
28   * Authors:
29   *   Keith Whitwell <keithw@vmware.com>
30   */
31 
32 
33 #ifndef BRW_WM_H
34 #define BRW_WM_H
35 
36 #include <stdbool.h>
37 
38 #include "brw_context.h"
39 #include "brw_eu.h"
40 
41 /* A big lookup table is used to figure out which and how many
42  * additional regs will inserted before the main payload in the WM
43  * program execution.  These mainly relate to depth and stencil
44  * processing and the early-depth-test optimization.
45  */
46 #define IZ_PS_KILL_ALPHATEST_BIT    0x1
47 #define IZ_PS_COMPUTES_DEPTH_BIT    0x2
48 #define IZ_DEPTH_WRITE_ENABLE_BIT   0x4
49 #define IZ_DEPTH_TEST_ENABLE_BIT    0x8
50 #define IZ_STENCIL_WRITE_ENABLE_BIT 0x10
51 #define IZ_STENCIL_TEST_ENABLE_BIT  0x20
52 #define IZ_BIT_MAX                  0x40
53 
54 #define AA_NEVER     0
55 #define AA_SOMETIMES 1
56 #define AA_ALWAYS    2
57 
58 #ifdef __cplusplus
59 extern "C" {
60 #endif
61 
62 bool brw_color_buffer_write_enabled(struct brw_context *brw);
63 
64 void
65 brw_upload_wm_prog(struct brw_context *brw);
66 
67 void
68 brw_wm_populate_key(struct brw_context *brw,
69                     struct brw_wm_prog_key *key);
70 
71 #ifdef __cplusplus
72 } // extern "C"
73 #endif
74 
75 #endif
76