1 /************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * Copyright 2010 VMware, Inc. All rights reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 **************************************************************************/ 28 29 #ifndef SP_TEX_SAMPLE_H 30 #define SP_TEX_SAMPLE_H 31 32 33 #include "tgsi/tgsi_exec.h" 34 35 struct sp_sampler_variant; 36 37 typedef void (*wrap_nearest_func)(float s, 38 unsigned size, 39 int *icoord); 40 41 typedef void (*wrap_linear_func)(float s, 42 unsigned size, 43 int *icoord0, 44 int *icoord1, 45 float *w); 46 47 typedef float (*compute_lambda_func)(const struct sp_sampler_variant *sampler, 48 const float s[TGSI_QUAD_SIZE], 49 const float t[TGSI_QUAD_SIZE], 50 const float p[TGSI_QUAD_SIZE]); 51 52 typedef void (*img_filter_func)(struct tgsi_sampler *tgsi_sampler, 53 float s, 54 float t, 55 float p, 56 unsigned level, 57 unsigned face_id, 58 enum tgsi_sampler_control control, 59 float *rgba); 60 61 typedef void (*filter_func)(struct tgsi_sampler *tgsi_sampler, 62 const float s[TGSI_QUAD_SIZE], 63 const float t[TGSI_QUAD_SIZE], 64 const float p[TGSI_QUAD_SIZE], 65 const float c0[TGSI_QUAD_SIZE], 66 enum tgsi_sampler_control control, 67 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); 68 69 70 union sp_sampler_key { 71 struct { 72 unsigned target:3; 73 unsigned is_pot:1; 74 unsigned processor:2; 75 unsigned unit:4; 76 unsigned swizzle_r:3; 77 unsigned swizzle_g:3; 78 unsigned swizzle_b:3; 79 unsigned swizzle_a:3; 80 unsigned pad:10; 81 } bits; 82 unsigned value; 83 }; 84 85 /** 86 * Subclass of tgsi_sampler 87 */ 88 struct sp_sampler_variant 89 { 90 struct tgsi_sampler base; /**< base class */ 91 92 union sp_sampler_key key; 93 94 /* The owner of this struct: 95 */ 96 const struct pipe_sampler_state *sampler; 97 98 99 /* Currently bound texture: 100 */ 101 const struct pipe_sampler_view *view; 102 struct softpipe_tex_tile_cache *cache; 103 104 unsigned processor; 105 106 /* For sp_get_samples_2d_linear_POT: 107 */ 108 unsigned xpot; 109 unsigned ypot; 110 111 unsigned faces[TGSI_QUAD_SIZE]; 112 113 wrap_nearest_func nearest_texcoord_s; 114 wrap_nearest_func nearest_texcoord_t; 115 wrap_nearest_func nearest_texcoord_p; 116 117 wrap_linear_func linear_texcoord_s; 118 wrap_linear_func linear_texcoord_t; 119 wrap_linear_func linear_texcoord_p; 120 121 img_filter_func min_img_filter; 122 img_filter_func mag_img_filter; 123 124 compute_lambda_func compute_lambda; 125 126 filter_func mip_filter; 127 filter_func compare; 128 filter_func sample_target; 129 130 /* Linked list: 131 */ 132 struct sp_sampler_variant *next; 133 }; 134 135 struct sp_sampler; 136 137 /* Create a sampler variant for a given set of non-orthogonal state. Currently the 138 */ 139 struct sp_sampler_variant * 140 sp_create_sampler_variant( const struct pipe_sampler_state *sampler, 141 const union sp_sampler_key key ); 142 143 void sp_sampler_variant_bind_view( struct sp_sampler_variant *variant, 144 struct softpipe_tex_tile_cache *tex_cache, 145 const struct pipe_sampler_view *view ); 146 147 void sp_sampler_variant_destroy( struct sp_sampler_variant * ); 148 149 150 151 static INLINE struct sp_sampler_variant * 152 sp_sampler_variant(const struct tgsi_sampler *sampler) 153 { 154 return (struct sp_sampler_variant *) sampler; 155 } 156 157 extern void 158 sp_get_samples(struct tgsi_sampler *tgsi_sampler, 159 const float s[TGSI_QUAD_SIZE], 160 const float t[TGSI_QUAD_SIZE], 161 const float p[TGSI_QUAD_SIZE], 162 float lodbias, 163 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); 164 165 166 #endif /* SP_TEX_SAMPLE_H */ 167
