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 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
