1 /*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Joakim Sindholt <opensource@zhasha.com>
4 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * on the rights to use, copy, modify, merge, publish, distribute, sub
10 * license, and/or sell copies of the Software, and to permit persons to whom
11 * the Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
23 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
24
25 #ifndef R300_FS_H
26 #define R300_FS_H
27
28 #include "pipe/p_state.h"
29 #include "tgsi/tgsi_scan.h"
30 #include "compiler/radeon_code.h"
31 #include "r300_shader_semantics.h"
32
33 struct r300_fragment_shader_code {
34 struct rX00_fragment_program_code code;
35 struct tgsi_shader_info info;
36 struct r300_shader_semantics inputs;
37
38 /* Whether the shader was replaced by a dummy one due to a shader
39 * compilation failure. */
40 boolean dummy;
41
42 /* Numbers of constants for each type. */
43 unsigned externals_count;
44 unsigned immediates_count;
45 unsigned rc_state_count;
46
47 /* Registers for fragment depth output setup. */
48 uint32_t fg_depth_src; /* R300_FG_DEPTH_SRC: 0x4bd8 */
49 uint32_t us_out_w; /* R300_US_W_FMT: 0x46b4 */
50
51 struct r300_fragment_program_external_state compare_state;
52
53 unsigned cb_code_size;
54 uint32_t *cb_code;
55
56 struct r300_fragment_shader_code* next;
57
58 boolean write_all;
59
60 };
61
62 struct r300_fragment_shader {
63 /* Parent class */
64 struct pipe_shader_state state;
65
66 /* Currently-bound fragment shader. */
67 struct r300_fragment_shader_code* shader;
68
69 /* List of the same shaders compiled with different texture-compare
70 * states. */
71 struct r300_fragment_shader_code* first;
72 };
73
74 void r300_shader_read_fs_inputs(struct tgsi_shader_info* info,
75 struct r300_shader_semantics* fs_inputs);
76
77 /* Return TRUE if the shader was switched and should be re-emitted. */
78 boolean r300_pick_fragment_shader(struct r300_context* r300);
79
r300_fragment_shader_writes_depth(struct r300_fragment_shader * fs)80 static inline boolean r300_fragment_shader_writes_depth(struct r300_fragment_shader *fs)
81 {
82 if (!fs)
83 return FALSE;
84 return (fs->shader->code.writes_depth) ? TRUE : FALSE;
85 }
86
r300_fragment_shader_writes_all(struct r300_fragment_shader * fs)87 static inline boolean r300_fragment_shader_writes_all(struct r300_fragment_shader *fs)
88 {
89 if (!fs)
90 return FALSE;
91 return (fs->shader->write_all) ? TRUE : FALSE;
92 }
93 #endif /* R300_FS_H */
94