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:
  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_memory.h"
  34 #include "util/u_transfer.h"
  35 #include "svga_screen_cache.h"
  36
  37 struct pipe_context;
  38 struct pipe_screen;
  39 struct svga_context;
  40 struct svga_winsys_surface;
  41 enum SVGA3dSurfaceFormat;
  42
  43
  44 #define SVGA_MAX_TEXTURE_LEVELS 16
  45
  46
  47 extern struct u_resource_vtbl svga_texture_vtbl;
  48
  49
  50 struct svga_texture
  51 {
  52    struct u_resource b;
  53
  54    ushort *defined;
  55
  56    struct svga_sampler_view *cached_view;
  57
  58    unsigned view_age[SVGA_MAX_TEXTURE_LEVELS];
  59    unsigned age;
  60
  61    boolean views_modified;
  62
  63    /**
  64     * Creation key for the host surface handle.
  65     *
  66     * This structure describes all the host surface characteristics so that it
  67     * can be looked up in cache, since creating a host surface is often a slow
  68     * operation.
  69     */
  70    struct svga_host_surface_cache_key key;
  71
  72    /**
  73     * Handle for the host side surface.
  74     *
  75     * This handle is owned by this texture. Views should hold on to a reference
  76     * to this texture and never destroy this handle directly.
  77     */
  78    struct svga_winsys_surface *handle;
  79
  80    /**
  81     * Whether the host side surface is imported and not created by this
  82     * driver.
  83     */
  84    boolean imported;
  85
  86    unsigned size;  /**< Approximate size in bytes */
  87
  88    /** array indexed by cube face or 3D/array slice, one bit per mipmap level */
  89    ushort *rendered_to;
  90
  91    /** array indexed by cube face or 3D/array slice, one bit per mipmap level.
  92     *  Set if the level is marked as dirty.
  93     */
  94    ushort *dirty;
  95 };
  96
  97
  98
  99 /* Note this is only used for texture (not buffer) transfers:
 100  */
 101 struct svga_transfer
 102 {
 103    struct pipe_transfer base;
 104
 105    unsigned slice;  /**< array slice or cube face */
 106
 107    struct svga_winsys_buffer *hwbuf;
 108
 109    /* Height of the hardware buffer in pixel blocks */
 110    unsigned hw_nblocksy;
 111
 112    /* Temporary malloc buffer when we can't allocate a hardware buffer
 113     * big enough */
 114    void *swbuf;
 115
 116    boolean use_direct_map;
 117 };
 118
 119
 120 static inline struct svga_texture *
 121 svga_texture(struct pipe_resource *resource)
 122 {
 123    struct svga_texture *tex = (struct svga_texture *)resource;
 124    assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
 125    return tex;
 126 }
 127
 128
 129 static inline struct svga_transfer *
 130 svga_transfer(struct pipe_transfer *transfer)
 131 {
 132    assert(transfer);
 133    return (struct svga_transfer *)transfer;
 134 }
 135
 136
 137 /**
 138  * Increment the age of a view into a texture
 139  * This is used to track updates to textures when we draw into
 140  * them via a surface.
 141  */
 142 static inline void
 143 svga_age_texture_view(struct svga_texture *tex, unsigned level)
 144 {
 145    assert(level < ARRAY_SIZE(tex->view_age));
 146    tex->view_age[level] = ++(tex->age);
 147 }
 148
 149
 150 /** For debugging, check that face and level are legal */
 151 static inline void
 152 check_face_level(const struct svga_texture *tex,
 153                  unsigned face, unsigned level)
 154 {
 155    if (tex->b.b.target == PIPE_TEXTURE_CUBE) {
 156       assert(face < 6);
 157    }
 158    else if (tex->b.b.target == PIPE_TEXTURE_3D) {
 159       assert(face < tex->b.b.depth0);
 160    }
 161    else {
 162       assert(face < tex->b.b.array_size);
 163    }
 164
 165    assert(level < 8 * sizeof(tex->rendered_to[0]));
 166 }
 167
 168
 169 /**
 170  * Mark the given texture face/level as being defined.
 171  */
 172 static inline void
 173 svga_define_texture_level(struct svga_texture *tex,
 174                           unsigned face,unsigned level)
 175 {
 176    check_face_level(tex, face, level);
 177    tex->defined[face] |= 1 << level;
 178 }
 179
 180
 181 static inline bool
 182 svga_is_texture_level_defined(const struct svga_texture *tex,
 183                               unsigned face, unsigned level)
 184 {
 185    check_face_level(tex, face, level);
 186    return (tex->defined[face] & (1 << level)) != 0;
 187 }
 188
 189
 190 static inline void
 191 svga_set_texture_rendered_to(struct svga_texture *tex,
 192                              unsigned face, unsigned level)
 193 {
 194    check_face_level(tex, face, level);
 195    tex->rendered_to[face] |= 1 << level;
 196 }
 197
 198
 199 static inline void
 200 svga_clear_texture_rendered_to(struct svga_texture *tex,
 201                                unsigned face, unsigned level)
 202 {
 203    check_face_level(tex, face, level);
 204    tex->rendered_to[face] &= ~(1 << level);
 205 }
 206
 207
 208 static inline boolean
 209 svga_was_texture_rendered_to(const struct svga_texture *tex,
 210                              unsigned face, unsigned level)
 211 {
 212    check_face_level(tex, face, level);
 213    return !!(tex->rendered_to[face] & (1 << level));
 214 }
 215
 216 static inline void
 217 svga_set_texture_dirty(struct svga_texture *tex,
 218                        unsigned face, unsigned level)
 219 {
 220    check_face_level(tex, face, level);
 221    tex->dirty[face] |= 1 << level;
 222 }
 223
 224 static inline void
 225 svga_clear_texture_dirty(struct svga_texture *tex)
 226 {
 227    unsigned i;
 228    for (i = 0; i < tex->b.b.depth0 * tex->b.b.array_size; i++) {
 229       tex->dirty[i] = 0;
 230    }
 231 }
 232
 233 static inline boolean
 234 svga_is_texture_dirty(const struct svga_texture *tex,
 235                       unsigned face, unsigned level)
 236 {
 237    check_face_level(tex, face, level);
 238    return !!(tex->dirty[face] & (1 << level));
 239 }
 240
 241 struct pipe_resource *
 242 svga_texture_create(struct pipe_screen *screen,
 243                     const struct pipe_resource *template);
 244
 245 struct pipe_resource *
 246 svga_texture_from_handle(struct pipe_screen * screen,
 247                         const struct pipe_resource *template,
 248                         struct winsys_handle *whandle);
 249
 250 boolean
 251 svga_texture_generate_mipmap(struct pipe_context *pipe,
 252                              struct pipe_resource *pt,
 253                              enum pipe_format format,
 254                              unsigned base_level,
 255                              unsigned last_level,
 256                              unsigned first_layer,
 257                              unsigned last_layer);
 258
 259
 260 #endif /* SVGA_TEXTURE_H */