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 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 struct intel_texture_object
  36 {
  37    struct gl_texture_object base;
  38
  39    /* This is a mirror of base._MaxLevel, updated at validate time,
  40     * except that we don't bother with the non-base levels for
  41     * non-mipmapped textures.
  42     */
  43    unsigned int _MaxLevel;
  44
  45    unsigned int validated_first_level;
  46    unsigned int validated_last_level;
  47
  48    /* The miptree of pixel data for the texture (if !needs_validate).  After
  49     * validation, the images will also have references to the same mt.
  50     */
  51    struct intel_mipmap_tree *mt;
  52
  53    /**
  54     * Set when mipmap trees in the texture images of this texture object
  55     * might not all be the mipmap tree above.
  56     */
  57    bool needs_validate;
  58
  59    /* Mesa format for the validated texture object. For non-views this
  60     * will always be the same as texObj->Image[0][0].TexFormat. For views, it
  61     * may differ since the mt is shared across views with differing formats.
  62     */
  63    mesa_format _Format;
  64
  65    const struct intel_image_format *planar_format;
  66 };
  67
  68
  69 /**
  70  * intel_texture_image is a subclass of swrast_texture_image because we
  71  * sometimes fall back to using the swrast module for software rendering.
  72  */
  73 struct intel_texture_image
  74 {
  75    struct swrast_texture_image base;
  76
  77    /* If intelImage->mt != NULL, image data is stored here.
  78     * Else if intelImage->base.Buffer != NULL, image is stored there.
  79     * Else there is no image data.
  80     */
  81    struct intel_mipmap_tree *mt;
  82 };
  83
  84 static inline struct intel_texture_object *
  85 intel_texture_object(struct gl_texture_object *obj)
  86 {
  87    return (struct intel_texture_object *) obj;
  88 }
  89
  90 static inline struct intel_texture_image *
  91 intel_texture_image(struct gl_texture_image *img)
  92 {
  93    return (struct intel_texture_image *) img;
  94 }
  95
  96 #ifdef __cplusplus
  97 }
  98 #endif
  99
 100 #endif /* _INTEL_TEX_OBJ_H */