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      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 */
     94