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

   1 /*
   2  * Copyright 2003 VMware, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #ifndef _INTEL_TEX_OBJ_H
  27 #define _INTEL_TEX_OBJ_H
  28
  29 #include "swrast/s_context.h"
  30
  31
  32 struct intel_texture_object
  33 {
  34    struct gl_texture_object base;
  35
  36    /* This is a mirror of base._MaxLevel, updated at validate time,
  37     * except that we don't bother with the non-base levels for
  38     * non-mipmapped textures.
  39     */
  40    unsigned int _MaxLevel;
  41
  42    unsigned int validated_first_level;
  43    unsigned int validated_last_level;
  44
  45    /* The miptree of pixel data for the texture (if !needs_validate).  After
  46     * validation, the images will also have references to the same mt.
  47     */
  48    struct intel_mipmap_tree *mt;
  49
  50    /**
  51     * Set when mipmap trees in the texture images of this texture object
  52     * might not all be the mipmap tree above.
  53     */
  54    bool needs_validate;
  55
  56    /* Mesa format for the validated texture object. For non-views this
  57     * will always be the same as mt->format. For views, it may differ
  58     * since the mt is shared across views with differing formats.
  59     */
  60    mesa_format _Format;
  61
  62    const struct intel_image_format *planar_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 */