1 /**************************************************************************
2 *
3 * Copyright 2010-2012 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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 **************************************************************************/
27
28
29 #ifndef LP_BLD_LIMITS_H_
30 #define LP_BLD_LIMITS_H_
31
32
33 #include <limits.h>
34
35 #include "pipe/p_state.h"
36 #include "pipe/p_defines.h"
37
38
39 /*
40 * TGSI translation limits.
41 *
42 * Some are slightly above SM 3.0 requirements to give some wiggle room to
43 * the state trackers.
44 */
45
46 #define LP_MAX_TGSI_TEMPS 256
47
48 #define LP_MAX_TGSI_ADDRS 16
49
50 #define LP_MAX_TGSI_IMMEDIATES 256
51
52 #define LP_MAX_TGSI_PREDS 16
53
54 /**
55 * Maximum control flow nesting
56 *
57 * SM3.0 requires 24
58 */
59 #define LP_MAX_TGSI_NESTING 32
60
61 /**
62 * Maximum iterations before loop termination
63 * Shared between every loop in a TGSI shader
64 */
65 #define LP_MAX_TGSI_LOOP_ITERATIONS 65535
66
67
68 /**
69 * Some of these limits are actually infinite (i.e., only limited by available
70 * memory), however advertising INT_MAX would cause some test problems to
71 * actually try to allocate the maximum and run out of memory and crash. So
72 * stick with something reasonable here.
73 */
74 static INLINE int
gallivm_get_shader_param(enum pipe_shader_cap param)75 gallivm_get_shader_param(enum pipe_shader_cap param)
76 {
77 switch(param) {
78 case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
79 case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
80 case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
81 case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
82 return 1 * 1024 * 1024;
83 case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
84 return LP_MAX_TGSI_NESTING;
85 case PIPE_SHADER_CAP_MAX_INPUTS:
86 return PIPE_MAX_SHADER_INPUTS;
87 case PIPE_SHADER_CAP_MAX_CONSTS:
88 return 16 * 2024;
89 case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
90 return PIPE_MAX_CONSTANT_BUFFERS;
91 case PIPE_SHADER_CAP_MAX_TEMPS:
92 return LP_MAX_TGSI_TEMPS;
93 case PIPE_SHADER_CAP_MAX_ADDRS:
94 return LP_MAX_TGSI_ADDRS;
95 case PIPE_SHADER_CAP_MAX_PREDS:
96 return LP_MAX_TGSI_PREDS;
97 case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
98 return 1;
99 case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
100 case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
101 case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
102 case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
103 return 1;
104 case PIPE_SHADER_CAP_SUBROUTINES:
105 return 1;
106 case PIPE_SHADER_CAP_INTEGERS:
107 return 1;
108 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
109 return PIPE_MAX_SAMPLERS;
110 default:
111 return 0;
112 }
113 }
114
115
116 #endif /* LP_BLD_LIMITS_H_ */
117