src/gallium/drivers/llvmpipe/lp_tex_sample.h

   1 /**************************************************************************
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   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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  27
  28 #ifndef LP_TEX_SAMPLE_H
  29 #define LP_TEX_SAMPLE_H
  30
  31
  32 #include "tgsi/tgsi_exec.h"
  33
  34
  35 struct llvmpipe_tex_tile_cache;
  36
  37
  38 /**
  39  * Subclass of tgsi_sampler
  40  */
  41 struct lp_shader_sampler
  42 {
  43    struct tgsi_sampler base;  /**< base class */
  44
  45    unsigned processor;
  46
  47    /* For lp_get_samples_2d_linear_POT:
  48     */
  49    unsigned xpot;
  50    unsigned ypot;
  51    unsigned level;
  52
  53    const struct pipe_texture *texture;
  54    const struct pipe_sampler_state *sampler;
  55
  56    struct llvmpipe_tex_tile_cache *cache;
  57 };
  58
  59
  60
  61 static INLINE struct lp_shader_sampler *
  62 lp_shader_sampler(const struct tgsi_sampler *sampler)
  63 {
  64    return (struct lp_shader_sampler *) sampler;
  65 }
  66
  67
  68
  69 extern void
  70 lp_get_samples(struct tgsi_sampler *tgsi_sampler,
  71                const float s[QUAD_SIZE],
  72                const float t[QUAD_SIZE],
  73                const float p[QUAD_SIZE],
  74                float lodbias,
  75                float rgba[NUM_CHANNELS][QUAD_SIZE]);
  76
  77
  78 #endif /* LP_TEX_SAMPLE_H */