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 4096 47 48 #define LP_MAX_TGSI_ADDRS 16 49 50 #define LP_MAX_TGSI_IMMEDIATES 4096 51 52 #define LP_MAX_TGSI_PREDS 16 53 54 #define LP_MAX_TGSI_CONSTS 4096 55 56 #define LP_MAX_TGSI_CONST_BUFFERS 16 57 58 #define LP_MAX_TGSI_CONST_BUFFER_SIZE (LP_MAX_TGSI_CONSTS * sizeof(float[4])) 59 60 /* 61 * For quick access we cache registers in statically 62 * allocated arrays. Here we define the maximum size 63 * for those arrays. 64 */ 65 #define LP_MAX_INLINED_TEMPS 256 66 67 #define LP_MAX_INLINED_IMMEDIATES 256 68 69 /** 70 * Maximum control flow nesting 71 * 72 * SM4.0 requires 64 (per subroutine actually, subroutine nesting itself is 32) 73 * SM3.0 requires 24 (most likely per subroutine too) 74 * add 2 more (some translation could add one more) 75 */ 76 #define LP_MAX_TGSI_NESTING 66 77 78 /** 79 * Maximum iterations before loop termination 80 * Shared between every loop in a TGSI shader 81 */ 82 #define LP_MAX_TGSI_LOOP_ITERATIONS 65535 83 84 85 /** 86 * Some of these limits are actually infinite (i.e., only limited by available 87 * memory), however advertising INT_MAX would cause some test problems to 88 * actually try to allocate the maximum and run out of memory and crash. So 89 * stick with something reasonable here. 90 */ 91 static inline int 92 gallivm_get_shader_param(enum pipe_shader_cap param) 93 { 94 switch(param) { 95 case PIPE_SHADER_CAP_MAX_INSTRUCTIONS: 96 case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS: 97 case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS: 98 case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: 99 return 1 * 1024 * 1024; 100 case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: 101 return LP_MAX_TGSI_NESTING; 102 case PIPE_SHADER_CAP_MAX_INPUTS: 103 return 32; 104 case PIPE_SHADER_CAP_MAX_OUTPUTS: 105 return 32; 106 case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE: 107 return LP_MAX_TGSI_CONST_BUFFER_SIZE; 108 case PIPE_SHADER_CAP_MAX_CONST_BUFFERS: 109 return PIPE_MAX_CONSTANT_BUFFERS; 110 case PIPE_SHADER_CAP_MAX_TEMPS: 111 return LP_MAX_TGSI_TEMPS; 112 case PIPE_SHADER_CAP_MAX_PREDS: 113 return LP_MAX_TGSI_PREDS; 114 case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED: 115 return 1; 116 case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR: 117 case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR: 118 case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR: 119 case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR: 120 return 1; 121 case PIPE_SHADER_CAP_SUBROUTINES: 122 return 1; 123 case PIPE_SHADER_CAP_INTEGERS: 124 return 1; 125 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS: 126 return PIPE_MAX_SAMPLERS; 127 case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS: 128 return PIPE_MAX_SHADER_SAMPLER_VIEWS; 129 case PIPE_SHADER_CAP_PREFERRED_IR: 130 return PIPE_SHADER_IR_TGSI; 131 case PIPE_SHADER_CAP_SUPPORTED_IRS: 132 return 1 << PIPE_SHADER_IR_TGSI; 133 case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED: 134 case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE: 135 return 1; 136 case PIPE_SHADER_CAP_DOUBLES: 137 return 1; 138 case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED: 139 case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED: 140 case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED: 141 case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS: 142 case PIPE_SHADER_CAP_MAX_SHADER_IMAGES: 143 case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD: 144 return 0; 145 case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT: 146 return 32; 147 } 148 /* if we get here, we missed a shader cap above (and should have seen 149 * a compiler warning.) 150 */ 151 return 0; 152 } 153 154 155 #endif /* LP_BLD_LIMITS_H_ */ 156
