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

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef _INTEL_TEX_OBJ_H
  29 #define _INTEL_TEX_OBJ_H
  30
  31 struct intel_texture_object
  32 {
  33    struct gl_texture_object base;       /* The "parent" object */
  34
  35    /* The mipmap tree must include at least these levels once
  36     * validated:
  37     */
  38    GLuint firstLevel;
  39    GLuint lastLevel;
  40
  41    /* Offset for firstLevel image:
  42     */
  43    GLuint textureOffset;
  44
  45    /* On validation any active images held in main memory or in other
  46     * regions will be copied to this region and the old storage freed.
  47     */
  48    struct intel_mipmap_tree *mt;
  49 };
  50
  51 struct intel_texture_image
  52 {
  53    struct gl_texture_image base;
  54
  55    /* These aren't stored in gl_texture_image
  56     */
  57    GLuint level;
  58    GLuint face;
  59
  60    /* If intelImage->mt != NULL, image data is stored here.
  61     * Else if intelImage->base.Data != NULL, image is stored there.
  62     * Else there is no image data.
  63     */
  64    struct intel_mipmap_tree *mt;
  65    GLboolean used_as_render_target;
  66 };
  67
  68 static INLINE struct intel_texture_object *
  69 intel_texture_object(struct gl_texture_object *obj)
  70 {
  71    return (struct intel_texture_object *) obj;
  72 }
  73
  74 static INLINE struct intel_texture_image *
  75 intel_texture_image(struct gl_texture_image *img)
  76 {
  77    return (struct intel_texture_image *) img;
  78 }
  79
  80 #endif /* _INTEL_TEX_OBJ_H */