1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * Copyright 2010 VMware, Inc. All rights reserved.
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:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
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.
27 **************************************************************************/
29 #ifndef SP_TEX_SAMPLE_H
30 #define SP_TEX_SAMPLE_H
33 #include "tgsi/tgsi_exec.h"
35 struct sp_sampler_varient;
37 typedef void (*wrap_nearest_func)(const float s[4],
41 typedef void (*wrap_linear_func)(const float s[4],
47 typedef float (*compute_lambda_func)(const struct sp_sampler_varient *sampler,
48 const float s[QUAD_SIZE],
49 const float t[QUAD_SIZE],
50 const float p[QUAD_SIZE]);
52 typedef void (*filter_func)(struct tgsi_sampler *tgsi_sampler,
53 const float s[QUAD_SIZE],
54 const float t[QUAD_SIZE],
55 const float p[QUAD_SIZE],
56 const float c0[QUAD_SIZE],
57 enum tgsi_sampler_control control,
58 float rgba[NUM_CHANNELS][QUAD_SIZE]);
61 union sp_sampler_key {
73 * Subclass of tgsi_sampler
75 struct sp_sampler_varient
77 struct tgsi_sampler base; /**< base class */
79 union sp_sampler_key key;
81 /* The owner of this struct:
83 const struct pipe_sampler_state *sampler;
86 /* Currently bound texture:
88 const struct pipe_resource *texture;
89 struct softpipe_tex_tile_cache *cache;
93 /* For sp_get_samples_2d_linear_POT:
101 wrap_nearest_func nearest_texcoord_s;
102 wrap_nearest_func nearest_texcoord_t;
103 wrap_nearest_func nearest_texcoord_p;
105 wrap_linear_func linear_texcoord_s;
106 wrap_linear_func linear_texcoord_t;
107 wrap_linear_func linear_texcoord_p;
109 filter_func min_img_filter;
110 filter_func mag_img_filter;
112 compute_lambda_func compute_lambda;
114 filter_func mip_filter;
119 struct sp_sampler_varient *next;
124 /* Create a sampler varient for a given set of non-orthogonal state. Currently the
126 struct sp_sampler_varient *
127 sp_create_sampler_varient( const struct pipe_sampler_state *sampler,
128 const union sp_sampler_key key );
130 void sp_sampler_varient_bind_texture( struct sp_sampler_varient *varient,
131 struct softpipe_tex_tile_cache *tex_cache,
132 const struct pipe_resource *tex );
134 void sp_sampler_varient_destroy( struct sp_sampler_varient * );
138 static INLINE struct sp_sampler_varient *
139 sp_sampler_varient(const struct tgsi_sampler *sampler)
141 return (struct sp_sampler_varient *) sampler;
145 sp_get_samples(struct tgsi_sampler *tgsi_sampler,
146 const float s[QUAD_SIZE],
147 const float t[QUAD_SIZE],
148 const float p[QUAD_SIZE],
150 float rgba[NUM_CHANNELS][QUAD_SIZE]);
153 #endif /* SP_TEX_SAMPLE_H */