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      1 /**********************************************************
      2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
      3  *
      4  * Permission is hereby granted, free of charge, to any person
      5  * obtaining a copy of this software and associated documentation
      6  * files (the "Software"), to deal in the Software without
      7  * restriction, including without limitation the rights to use, copy,
      8  * modify, merge, publish, distribute, sublicense, and/or sell copies
      9  * of the Software, and to permit persons to whom the Software is
     10  * furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice shall be
     13  * included in all copies or substantial portions of the Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     22  * SOFTWARE.
     23  *
     24  **********************************************************/
     25 
     26 #ifndef SVGA_TEXTURE_H
     27 #define SVGA_TEXTURE_H
     28 
     29 
     30 #include "pipe/p_compiler.h"
     31 #include "pipe/p_state.h"
     32 #include "util/u_inlines.h"
     33 #include "util/u_transfer.h"
     34 #include "svga_screen_cache.h"
     35 
     36 struct pipe_context;
     37 struct pipe_screen;
     38 struct svga_context;
     39 struct svga_winsys_surface;
     40 enum SVGA3dSurfaceFormat;
     41 
     42 
     43 #define SVGA_MAX_TEXTURE_LEVELS 16
     44 
     45 
     46 extern struct u_resource_vtbl svga_texture_vtbl;
     47 
     48 
     49 struct svga_texture
     50 {
     51    struct u_resource b;
     52 
     53    boolean defined[6][SVGA_MAX_TEXTURE_LEVELS];
     54 
     55    struct svga_sampler_view *cached_view;
     56 
     57    unsigned view_age[SVGA_MAX_TEXTURE_LEVELS];
     58    unsigned age;
     59 
     60    boolean views_modified;
     61 
     62    /**
     63     * Creation key for the host surface handle.
     64     *
     65     * This structure describes all the host surface characteristics so that it
     66     * can be looked up in cache, since creating a host surface is often a slow
     67     * operation.
     68     */
     69    struct svga_host_surface_cache_key key;
     70 
     71    /**
     72     * Handle for the host side surface.
     73     *
     74     * This handle is owned by this texture. Views should hold on to a reference
     75     * to this texture and never destroy this handle directly.
     76     */
     77    struct svga_winsys_surface *handle;
     78 };
     79 
     80 
     81 
     82 /* Note this is only used for texture (not buffer) transfers:
     83  */
     84 struct svga_transfer
     85 {
     86    struct pipe_transfer base;
     87 
     88    unsigned face;
     89 
     90    struct svga_winsys_buffer *hwbuf;
     91 
     92    /* Height of the hardware buffer in pixel blocks */
     93    unsigned hw_nblocksy;
     94 
     95    /* Temporary malloc buffer when we can't allocate a hardware buffer
     96     * big enough */
     97    void *swbuf;
     98 };
     99 
    100 
    101 static INLINE struct svga_texture *svga_texture( struct pipe_resource *resource )
    102 {
    103    struct svga_texture *tex = (struct svga_texture *)resource;
    104    assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
    105    return tex;
    106 }
    107 
    108 
    109 static INLINE struct svga_transfer *
    110 svga_transfer(struct pipe_transfer *transfer)
    111 {
    112    assert(transfer);
    113    return (struct svga_transfer *)transfer;
    114 }
    115 
    116 
    117 
    118 struct pipe_resource *
    119 svga_texture_create(struct pipe_screen *screen,
    120                     const struct pipe_resource *template);
    121 
    122 struct pipe_resource *
    123 svga_texture_from_handle(struct pipe_screen * screen,
    124 			const struct pipe_resource *template,
    125 			struct winsys_handle *whandle);
    126 
    127 
    128 
    129 
    130 #endif /* SVGA_TEXTURE_H */
    131