src/mesa/drivers/dri/i965/intel_tex_obj.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  26  **************************************************************************/
  27
  28 #ifndef _INTEL_TEX_OBJ_H
  29 #define _INTEL_TEX_OBJ_H
  30
  31 #include "swrast/s_context.h"
  32
  33
  34 struct intel_texture_object
  35 {
  36    struct gl_texture_object base;
  37
  38    /* This is a mirror of base._MaxLevel, updated at validate time,
  39     * except that we don't bother with the non-base levels for
  40     * non-mipmapped textures.
  41     */
  42    unsigned int _MaxLevel;
  43
  44    unsigned int validated_first_level;
  45    unsigned int validated_last_level;
  46
  47    /* The miptree of pixel data for the texture (if !needs_validate).  After
  48     * validation, the images will also have references to the same mt.
  49     */
  50    struct intel_mipmap_tree *mt;
  51
  52    /**
  53     * Set when mipmap trees in the texture images of this texture object
  54     * might not all be the mipmap tree above.
  55     */
  56    bool needs_validate;
  57
  58    /* Mesa format for the validated texture object. For non-views this
  59     * will always be the same as mt->format. For views, it may differ
  60     * since the mt is shared across views with differing formats.
  61     */
  62    mesa_format _Format;
  63 };
  64
  65
  66 /**
  67  * intel_texture_image is a subclass of swrast_texture_image because we
  68  * sometimes fall back to using the swrast module for software rendering.
  69  */
  70 struct intel_texture_image
  71 {
  72    struct swrast_texture_image base;
  73
  74    /* If intelImage->mt != NULL, image data is stored here.
  75     * Else if intelImage->base.Buffer != NULL, image is stored there.
  76     * Else there is no image data.
  77     */
  78    struct intel_mipmap_tree *mt;
  79 };
  80
  81 static inline struct intel_texture_object *
  82 intel_texture_object(struct gl_texture_object *obj)
  83 {
  84    return (struct intel_texture_object *) obj;
  85 }
  86
  87 static inline struct intel_texture_image *
  88 intel_texture_image(struct gl_texture_image *img)
  89 {
  90    return (struct intel_texture_image *) img;
  91 }
  92
  93 #endif /* _INTEL_TEX_OBJ_H */