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@lunarg.com> 26 */ 27 28 #ifndef ILO_STATE_SBE_H 29 #define ILO_STATE_SBE_H 30 31 #include "genhw/genhw.h" 32 33 #include "ilo_core.h" 34 #include "ilo_dev.h" 35 36 /* 37 * From the Sandy Bridge PRM, volume 2 part 1, page 264: 38 * 39 * "Number of SF Output Attributes sets the number of attributes that will 40 * be output from the SF stage, not including position. This can be used 41 * to specify up to 32, and may differ from the number of input 42 * attributes." 43 * 44 * "The first or last set of 16 attributes can be swizzled according to 45 * certain state fields." 46 */ 47 #define ILO_STATE_SBE_MAX_ATTR_COUNT 32 48 #define ILO_STATE_SBE_MAX_SWIZZLE_COUNT 16 49 50 struct ilo_state_sbe_swizzle_info { 51 /* select an attribute from read ones */ 52 enum gen_inputattr_select attr_select; 53 uint8_t attr; 54 55 bool force_zeros; 56 }; 57 58 struct ilo_state_sbe_info { 59 uint8_t attr_count; 60 61 /* which VUE attributes to read */ 62 uint8_t cv_vue_attr_count; 63 uint8_t vue_read_base; 64 uint8_t vue_read_count; 65 bool has_min_read_count; 66 67 bool cv_is_point; 68 bool point_sprite_origin_lower_left; 69 /* force sprite coordinates to the four corner vertices of the point */ 70 uint32_t point_sprite_enables; 71 72 /* force attr at the provoking vertex to a0 and zero to a1/a2 */ 73 uint32_t const_interp_enables; 74 75 bool swizzle_enable; 76 /* swizzle attribute 16 to 31 instead; Gen7+ only */ 77 bool swizzle_16_31; 78 uint8_t swizzle_count; 79 const struct ilo_state_sbe_swizzle_info *swizzles; 80 }; 81 82 struct ilo_state_sbe { 83 uint32_t sbe[3]; 84 uint32_t swiz[8]; 85 }; 86 87 bool 88 ilo_state_sbe_init(struct ilo_state_sbe *sbe, 89 const struct ilo_dev *dev, 90 const struct ilo_state_sbe_info *info); 91 92 bool 93 ilo_state_sbe_init_for_rectlist(struct ilo_state_sbe *sbe, 94 const struct ilo_dev *dev, 95 uint8_t read_base, 96 uint8_t read_count); 97 98 bool 99 ilo_state_sbe_set_info(struct ilo_state_sbe *sbe, 100 const struct ilo_dev *dev, 101 const struct ilo_state_sbe_info *info); 102 103 #endif /* ILO_STATE_SBE_H */ 104