src/gallium/drivers/svga/svga_resource_texture.h

   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:
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  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
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  22  * SOFTWARE.
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  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    struct svga_winsys_buffer *hwbuf;
  89
  90    /* Height of the hardware buffer in pixel blocks */
  91    unsigned hw_nblocksy;
  92
  93    /* Temporary malloc buffer when we can't allocate a hardware buffer
  94     * big enough */
  95    void *swbuf;
  96 };
  97
  98
  99 static INLINE struct svga_texture *svga_texture( struct pipe_resource *resource )
 100 {
 101    struct svga_texture *tex = (struct svga_texture *)resource;
 102    assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
 103    return tex;
 104 }
 105
 106
 107 static INLINE struct svga_transfer *
 108 svga_transfer(struct pipe_transfer *transfer)
 109 {
 110    assert(transfer);
 111    return (struct svga_transfer *)transfer;
 112 }
 113
 114
 115
 116 struct pipe_resource *
 117 svga_texture_create(struct pipe_screen *screen,
 118                     const struct pipe_resource *template);
 119
 120 struct pipe_resource *
 121 svga_texture_from_handle(struct pipe_screen * screen,
 122                         const struct pipe_resource *template,
 123                         struct winsys_handle *whandle);
 124
 125
 126
 127 enum SVGA3dSurfaceFormat
 128 svga_translate_format(enum pipe_format format);
 129
 130 enum SVGA3dSurfaceFormat
 131 svga_translate_format_render(enum pipe_format format);
 132
 133
 134 #endif /* SVGA_TEXTURE_H */