1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 2015 LunarG, Inc. 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Chia-I Wu <olv (at) lunarg.com> 26 */ 27 28 #ifndef ILO_STATE_SOL_H 29 #define ILO_STATE_SOL_H 30 31 #include "genhw/genhw.h" 32 33 #include "ilo_core.h" 34 #include "ilo_dev.h" 35 36 /* 37 * From the Ivy Bridge PRM, volume 2 part 1, page 193: 38 * 39 * "Incoming topologies are tagged with a 2-bit StreamID." 40 */ 41 #define ILO_STATE_SOL_MAX_STREAM_COUNT 4 42 43 /* 44 * From the Ivy Bridge PRM, volume 2 part 1, page 195: 45 * 46 * "Up to four SO buffers are supported." 47 */ 48 #define ILO_STATE_SOL_MAX_BUFFER_COUNT 4 49 50 /* 51 * From the Ivy Bridge PRM, volume 2 part 1, page 201: 52 * 53 * "All 128 decls..." 54 */ 55 #define ILO_STATE_SOL_MAX_DECL_COUNT 128 56 57 /** 58 * Output a vertex attribute. 59 */ 60 struct ilo_state_sol_decl_info { 61 /* select an attribute from read ones */ 62 uint8_t attr; 63 bool is_hole; 64 65 /* which components to write */ 66 uint8_t component_base; 67 uint8_t component_count; 68 69 /* destination buffer */ 70 uint8_t buffer; 71 }; 72 73 struct ilo_state_sol_stream_info { 74 /* which VUE attributes to read */ 75 uint8_t cv_vue_attr_count; 76 uint8_t vue_read_base; 77 uint8_t vue_read_count; 78 79 uint8_t decl_count; 80 const struct ilo_state_sol_decl_info *decls; 81 }; 82 83 struct ilo_state_sol_info { 84 void *data; 85 size_t data_size; 86 87 bool sol_enable; 88 bool stats_enable; 89 enum gen_reorder_mode tristrip_reorder; 90 91 bool render_disable; 92 /* ignored when SOL is disabled */ 93 uint8_t render_stream; 94 95 /* a buffer is disabled when its stride is zero */ 96 uint16_t buffer_strides[ILO_STATE_SOL_MAX_BUFFER_COUNT]; 97 98 struct ilo_state_sol_stream_info streams[ILO_STATE_SOL_MAX_STREAM_COUNT]; 99 }; 100 101 struct ilo_state_sol { 102 uint32_t streamout[2]; 103 uint16_t strides[4]; 104 105 uint32_t so_decl[2]; 106 uint32_t (*decl)[2]; 107 uint8_t decl_count; 108 }; 109 110 struct ilo_vma; 111 112 struct ilo_state_sol_buffer_info { 113 const struct ilo_vma *vma; 114 uint32_t offset; 115 uint32_t size; 116 117 /* Gen8+ only; at least sizeof(uint32_t) bytes */ 118 const struct ilo_vma *write_offset_vma; 119 uint32_t write_offset_offset; 120 121 bool write_offset_load; 122 bool write_offset_save; 123 124 bool write_offset_imm_enable; 125 uint32_t write_offset_imm; 126 }; 127 128 struct ilo_state_sol_buffer { 129 uint32_t so_buf[5]; 130 131 const struct ilo_vma *vma; 132 const struct ilo_vma *write_offset_vma; 133 }; 134 135 static inline size_t 136 ilo_state_sol_data_size(const struct ilo_dev *dev, uint8_t max_decl_count) 137 { 138 const struct ilo_state_sol *so = NULL; 139 return (ilo_dev_gen(dev) >= ILO_GEN(7)) ? 140 sizeof(so->decl[0]) * max_decl_count : 0; 141 } 142 143 bool 144 ilo_state_sol_init(struct ilo_state_sol *sol, 145 const struct ilo_dev *dev, 146 const struct ilo_state_sol_info *info); 147 148 bool 149 ilo_state_sol_init_disabled(struct ilo_state_sol *sol, 150 const struct ilo_dev *dev, 151 bool render_disable); 152 153 uint32_t 154 ilo_state_sol_buffer_size(const struct ilo_dev *dev, uint32_t size, 155 uint32_t *alignment); 156 157 bool 158 ilo_state_sol_buffer_init(struct ilo_state_sol_buffer *sb, 159 const struct ilo_dev *dev, 160 const struct ilo_state_sol_buffer_info *info); 161 162 bool 163 ilo_state_sol_buffer_init_disabled(struct ilo_state_sol_buffer *sb, 164 const struct ilo_dev *dev); 165 166 #endif /* ILO_STATE_SOL_H */ 167
