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
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  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  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_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 validated, either through the
  82     * InvalidateGBSurface command or after the surface is updated
  83     * or rendered to.
  84     */
  85    boolean validated;
  86
  87    /**
  88     * Whether the host side surface is imported and not created by this
  89     * driver.
  90     */
  91    boolean imported;
  92
  93    /**
  94     * Whether texture upload buffer can be used on this texture
  95     */
  96    boolean can_use_upload;
  97
  98    unsigned size;  /**< Approximate size in bytes */
  99
 100    /** array indexed by cube face or 3D/array slice, one bit per mipmap level */
 101    ushort *rendered_to;
 102
 103    /** array indexed by cube face or 3D/array slice, one bit per mipmap level.
 104     *  Set if the level is marked as dirty.
 105     */
 106    ushort *dirty;
 107 };
 108
 109
 110
 111 /* Note this is only used for texture (not buffer) transfers:
 112  */
 113 struct svga_transfer
 114 {
 115    struct pipe_transfer base;
 116
 117    unsigned slice;  /**< array slice or cube face */
 118
 119    struct svga_winsys_buffer *hwbuf;
 120
 121    /* Height of the hardware buffer in pixel blocks */
 122    unsigned hw_nblocksy;
 123
 124    /* Temporary malloc buffer when we can't allocate a hardware buffer
 125     * big enough */
 126    void *swbuf;
 127
 128    /* True if guest backed surface is supported and we can directly map
 129     * to the surface for this transfer.
 130     */
 131    boolean use_direct_map;
 132
 133    struct {
 134       struct pipe_resource *buf;  /* points to the upload buffer if this
 135                                    * transfer is done via the upload buffer
 136                                    * instead of directly mapping to the
 137                                    * resource's surface.
 138                                    */
 139       void *map;
 140       unsigned offset;
 141       SVGA3dBox box;
 142       unsigned nlayers;
 143    } upload;
 144 };
 145
 146
 147 static inline struct svga_texture *
 148 svga_texture(struct pipe_resource *resource)
 149 {
 150    struct svga_texture *tex = (struct svga_texture *)resource;
 151    assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
 152    return tex;
 153 }
 154
 155
 156 static inline struct svga_transfer *
 157 svga_transfer(struct pipe_transfer *transfer)
 158 {
 159    assert(transfer);
 160    return (struct svga_transfer *)transfer;
 161 }
 162
 163
 164 /**
 165  * Increment the age of a view into a texture
 166  * This is used to track updates to textures when we draw into
 167  * them via a surface.
 168  */
 169 static inline void
 170 svga_age_texture_view(struct svga_texture *tex, unsigned level)
 171 {
 172    assert(level < ARRAY_SIZE(tex->view_age));
 173    tex->view_age[level] = ++(tex->age);
 174 }
 175
 176
 177 /** For debugging, check that face and level are legal */
 178 static inline void
 179 check_face_level(const struct svga_texture *tex,
 180                  unsigned face, unsigned level)
 181 {
 182    if (tex->b.b.target == PIPE_TEXTURE_CUBE) {
 183       assert(face < 6);
 184    }
 185    else if (tex->b.b.target == PIPE_TEXTURE_3D) {
 186       assert(face < tex->b.b.depth0);
 187    }
 188    else {
 189       assert(face < tex->b.b.array_size);
 190    }
 191
 192    assert(level < 8 * sizeof(tex->rendered_to[0]));
 193 }
 194
 195
 196 /**
 197  * Mark the given texture face/level as being defined.
 198  */
 199 static inline void
 200 svga_define_texture_level(struct svga_texture *tex,
 201                           unsigned face,unsigned level)
 202 {
 203    check_face_level(tex, face, level);
 204    tex->defined[face] |= 1 << level;
 205    tex->validated = TRUE;
 206 }
 207
 208
 209 static inline bool
 210 svga_is_texture_level_defined(const struct svga_texture *tex,
 211                               unsigned face, unsigned level)
 212 {
 213    check_face_level(tex, face, level);
 214    return (tex->defined[face] & (1 << level)) != 0;
 215 }
 216
 217
 218 static inline void
 219 svga_set_texture_rendered_to(struct svga_texture *tex,
 220                              unsigned face, unsigned level)
 221 {
 222    check_face_level(tex, face, level);
 223    tex->rendered_to[face] |= 1 << level;
 224    tex->validated = TRUE;
 225 }
 226
 227
 228 static inline void
 229 svga_clear_texture_rendered_to(struct svga_texture *tex,
 230                                unsigned face, unsigned level)
 231 {
 232    check_face_level(tex, face, level);
 233    tex->rendered_to[face] &= ~(1 << level);
 234 }
 235
 236
 237 static inline boolean
 238 svga_was_texture_rendered_to(const struct svga_texture *tex,
 239                              unsigned face, unsigned level)
 240 {
 241    check_face_level(tex, face, level);
 242    return !!(tex->rendered_to[face] & (1 << level));
 243 }
 244
 245 static inline void
 246 svga_set_texture_dirty(struct svga_texture *tex,
 247                        unsigned face, unsigned level)
 248 {
 249    check_face_level(tex, face, level);
 250    tex->dirty[face] |= 1 << level;
 251 }
 252
 253 static inline void
 254 svga_clear_texture_dirty(struct svga_texture *tex)
 255 {
 256    unsigned i;
 257    for (i = 0; i < tex->b.b.depth0 * tex->b.b.array_size; i++) {
 258       tex->dirty[i] = 0;
 259    }
 260 }
 261
 262 static inline boolean
 263 svga_is_texture_dirty(const struct svga_texture *tex,
 264                       unsigned face, unsigned level)
 265 {
 266    check_face_level(tex, face, level);
 267    return !!(tex->dirty[face] & (1 << level));
 268 }
 269
 270 struct pipe_resource *
 271 svga_texture_create(struct pipe_screen *screen,
 272                     const struct pipe_resource *template);
 273
 274 struct pipe_resource *
 275 svga_texture_from_handle(struct pipe_screen * screen,
 276                         const struct pipe_resource *template,
 277                         struct winsys_handle *whandle);
 278
 279 boolean
 280 svga_texture_generate_mipmap(struct pipe_context *pipe,
 281                              struct pipe_resource *pt,
 282                              enum pipe_format format,
 283                              unsigned base_level,
 284                              unsigned last_level,
 285                              unsigned first_layer,
 286                              unsigned last_layer);
 287
 288 boolean
 289 svga_texture_transfer_map_upload_create(struct svga_context *svga);
 290
 291 void
 292 svga_texture_transfer_map_upload_destroy(struct svga_context *svga);
 293
 294 boolean
 295 svga_texture_transfer_map_can_upload(const struct svga_screen *svgascreen,
 296                                      const struct pipe_resource *pt);
 297
 298 void *
 299 svga_texture_transfer_map_upload(struct svga_context *svga,
 300                                  struct svga_transfer *st);
 301
 302 void
 303 svga_texture_transfer_unmap_upload(struct svga_context *svga,
 304                                    struct svga_transfer *st);
 305
 306 #endif /* SVGA_TEXTURE_H */