1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
28 /* Authors: Keith Whitwell <keith@tungstengraphics.com>
34 #include "tgsi/exec/tgsi_exec.h"
41 /* The rasterizer generates 2x2 quads of fragment and feeds them to
42 * the current fp_machine (see below).
43 * Remember that Y=0=top with Y increasing down the window.
45 #define QUAD_TOP_LEFT 0
46 #define QUAD_TOP_RIGHT 1
47 #define QUAD_BOTTOM_LEFT 2
48 #define QUAD_BOTTOM_RIGHT 3
50 #define MASK_TOP_LEFT (1 << QUAD_TOP_LEFT)
51 #define MASK_TOP_RIGHT (1 << QUAD_TOP_RIGHT)
52 #define MASK_BOTTOM_LEFT (1 << QUAD_BOTTOM_LEFT)
53 #define MASK_BOTTOM_RIGHT (1 << QUAD_BOTTOM_RIGHT)
58 * Encodes everything we need to know about a 2x2 pixel block. Uses
59 * "Channel-Serial" or "SoA" layout.
65 unsigned facing
:1; /**< Front (0) or back (1) facing? */
66 unsigned prim
:2; /**< PRIM_POINT, LINE, TRI */
69 float color
[NUM_CHANNELS
][QUAD_SIZE
]; /* rrrr, gggg, bbbb, aaaa */
70 float depth
[QUAD_SIZE
];
73 float coverage
[QUAD_SIZE
]; /** fragment coverage for antialiasing */
75 const struct tgsi_interp_coef
*coef
;
76 const struct tgsi_interp_coef
*posCoef
;
82 #endif /* SP_HEADERS_H */