1 /************************************************************************** 2 * 3 * Copyright 2007 VMware, Inc. 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 VMWARE 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 36 struct sp_sampler_view; 37 struct sp_sampler; 38 39 typedef void (*wrap_nearest_func)(float s, 40 unsigned size, 41 int offset, 42 int *icoord); 43 44 typedef void (*wrap_linear_func)(float s, 45 unsigned size, 46 int offset, 47 int *icoord0, 48 int *icoord1, 49 float *w); 50 51 typedef float (*compute_lambda_func)(const struct sp_sampler_view *sp_sview, 52 const float s[TGSI_QUAD_SIZE], 53 const float t[TGSI_QUAD_SIZE], 54 const float p[TGSI_QUAD_SIZE]); 55 56 struct img_filter_args { 57 float s; 58 float t; 59 float p; 60 unsigned level; 61 unsigned face_id; 62 const int8_t *offset; 63 bool gather_only; 64 int gather_comp; 65 }; 66 67 typedef void (*img_filter_func)(const struct sp_sampler_view *sp_sview, 68 const struct sp_sampler *sp_samp, 69 const struct img_filter_args *args, 70 float *rgba); 71 72 struct filter_args { 73 enum tgsi_sampler_control control; 74 const int8_t *offset; 75 const uint *faces; 76 }; 77 78 typedef void (*mip_filter_func)(const struct sp_sampler_view *sp_sview, 79 const struct sp_sampler *sp_samp, 80 img_filter_func min_filter, 81 img_filter_func mag_filter, 82 const float s[TGSI_QUAD_SIZE], 83 const float t[TGSI_QUAD_SIZE], 84 const float p[TGSI_QUAD_SIZE], 85 const float c0[TGSI_QUAD_SIZE], 86 const float lod[TGSI_QUAD_SIZE], 87 const struct filter_args *args, 88 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); 89 90 91 typedef void (*mip_level_func)(const struct sp_sampler_view *sp_sview, 92 const struct sp_sampler *sp_samp, 93 const float lod[TGSI_QUAD_SIZE], 94 float level[TGSI_QUAD_SIZE]); 95 96 typedef void (*fetch_func)(struct sp_sampler_view *sp_sview, 97 const int i[TGSI_QUAD_SIZE], 98 const int j[TGSI_QUAD_SIZE], const int k[TGSI_QUAD_SIZE], 99 const int lod[TGSI_QUAD_SIZE], const int8_t offset[3], 100 float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); 101 102 103 struct sp_sampler_view 104 { 105 struct pipe_sampler_view base; 106 107 /* For sp_get_samples_2d_linear_POT: 108 */ 109 unsigned xpot; 110 unsigned ypot; 111 112 boolean need_swizzle; 113 boolean pot2d; 114 boolean need_cube_convert; 115 116 /* these are different per shader type */ 117 struct softpipe_tex_tile_cache *cache; 118 compute_lambda_func compute_lambda; 119 120 }; 121 122 struct sp_filter_funcs { 123 mip_level_func relative_level; 124 mip_filter_func filter; 125 }; 126 127 struct sp_sampler { 128 struct pipe_sampler_state base; 129 130 boolean min_mag_equal_repeat_linear; 131 boolean min_mag_equal; 132 unsigned min_img_filter; 133 134 wrap_nearest_func nearest_texcoord_s; 135 wrap_nearest_func nearest_texcoord_t; 136 wrap_nearest_func nearest_texcoord_p; 137 138 wrap_linear_func linear_texcoord_s; 139 wrap_linear_func linear_texcoord_t; 140 wrap_linear_func linear_texcoord_p; 141 142 const struct sp_filter_funcs *filter_funcs; 143 }; 144 145 146 /** 147 * Subclass of tgsi_sampler 148 */ 149 struct sp_tgsi_sampler 150 { 151 struct tgsi_sampler base; /**< base class */ 152 struct sp_sampler *sp_sampler[PIPE_MAX_SAMPLERS]; 153 struct sp_sampler_view sp_sview[PIPE_MAX_SHADER_SAMPLER_VIEWS]; 154 155 }; 156 157 compute_lambda_func 158 softpipe_get_lambda_func(const struct pipe_sampler_view *view, 159 enum pipe_shader_type shader); 160 161 162 void * 163 softpipe_create_sampler_state(struct pipe_context *pipe, 164 const struct pipe_sampler_state *sampler); 165 166 167 struct pipe_sampler_view * 168 softpipe_create_sampler_view(struct pipe_context *pipe, 169 struct pipe_resource *resource, 170 const struct pipe_sampler_view *templ); 171 172 173 struct sp_tgsi_sampler * 174 sp_create_tgsi_sampler(void); 175 176 177 #endif /* SP_TEX_SAMPLE_H */ 178