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.
  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    /* True if guest backed surface is supported and we can directly map
 117     * to the surface for this transfer.
 118     */
 119    boolean use_direct_map;
 120
 121    struct {
 122       struct pipe_resource *buf;  /* points to the upload buffer if this
 123                                    * transfer is done via the upload buffer
 124                                    * instead of directly mapping to the
 125                                    * resource's surface.
 126                                    */
 127       void *map;
 128       unsigned offset;
 129       SVGA3dBox box;
 130       unsigned nlayers;
 131    } upload;
 132 };
 133
 134
 135 static inline struct svga_texture *
 136 svga_texture(struct pipe_resource *resource)
 137 {
 138    struct svga_texture *tex = (struct svga_texture *)resource;
 139    assert(tex == NULL || tex->b.vtbl == &svga_texture_vtbl);
 140    return tex;
 141 }
 142
 143
 144 static inline struct svga_transfer *
 145 svga_transfer(struct pipe_transfer *transfer)
 146 {
 147    assert(transfer);
 148    return (struct svga_transfer *)transfer;
 149 }
 150
 151
 152 /**
 153  * Increment the age of a view into a texture
 154  * This is used to track updates to textures when we draw into
 155  * them via a surface.
 156  */
 157 static inline void
 158 svga_age_texture_view(struct svga_texture *tex, unsigned level)
 159 {
 160    assert(level < ARRAY_SIZE(tex->view_age));
 161    tex->view_age[level] = ++(tex->age);
 162 }
 163
 164
 165 /** For debugging, check that face and level are legal */
 166 static inline void
 167 check_face_level(const struct svga_texture *tex,
 168                  unsigned face, unsigned level)
 169 {
 170    if (tex->b.b.target == PIPE_TEXTURE_CUBE) {
 171       assert(face < 6);
 172    }
 173    else if (tex->b.b.target == PIPE_TEXTURE_3D) {
 174       assert(face < tex->b.b.depth0);
 175    }
 176    else {
 177       assert(face < tex->b.b.array_size);
 178    }
 179
 180    assert(level < 8 * sizeof(tex->rendered_to[0]));
 181 }
 182
 183
 184 /**
 185  * Mark the given texture face/level as being defined.
 186  */
 187 static inline void
 188 svga_define_texture_level(struct svga_texture *tex,
 189                           unsigned face,unsigned level)
 190 {
 191    check_face_level(tex, face, level);
 192    tex->defined[face] |= 1 << level;
 193 }
 194
 195
 196 static inline bool
 197 svga_is_texture_level_defined(const struct svga_texture *tex,
 198                               unsigned face, unsigned level)
 199 {
 200    check_face_level(tex, face, level);
 201    return (tex->defined[face] & (1 << level)) != 0;
 202 }
 203
 204
 205 static inline void
 206 svga_set_texture_rendered_to(struct svga_texture *tex,
 207                              unsigned face, unsigned level)
 208 {
 209    check_face_level(tex, face, level);
 210    tex->rendered_to[face] |= 1 << level;
 211 }
 212
 213
 214 static inline void
 215 svga_clear_texture_rendered_to(struct svga_texture *tex,
 216                                unsigned face, unsigned level)
 217 {
 218    check_face_level(tex, face, level);
 219    tex->rendered_to[face] &= ~(1 << level);
 220 }
 221
 222
 223 static inline boolean
 224 svga_was_texture_rendered_to(const struct svga_texture *tex,
 225                              unsigned face, unsigned level)
 226 {
 227    check_face_level(tex, face, level);
 228    return !!(tex->rendered_to[face] & (1 << level));
 229 }
 230
 231 static inline void
 232 svga_set_texture_dirty(struct svga_texture *tex,
 233                        unsigned face, unsigned level)
 234 {
 235    check_face_level(tex, face, level);
 236    tex->dirty[face] |= 1 << level;
 237 }
 238
 239 static inline void
 240 svga_clear_texture_dirty(struct svga_texture *tex)
 241 {
 242    unsigned i;
 243    for (i = 0; i < tex->b.b.depth0 * tex->b.b.array_size; i++) {
 244       tex->dirty[i] = 0;
 245    }
 246 }
 247
 248 static inline boolean
 249 svga_is_texture_dirty(const struct svga_texture *tex,
 250                       unsigned face, unsigned level)
 251 {
 252    check_face_level(tex, face, level);
 253    return !!(tex->dirty[face] & (1 << level));
 254 }
 255
 256 struct pipe_resource *
 257 svga_texture_create(struct pipe_screen *screen,
 258                     const struct pipe_resource *template);
 259
 260 struct pipe_resource *
 261 svga_texture_from_handle(struct pipe_screen * screen,
 262                         const struct pipe_resource *template,
 263                         struct winsys_handle *whandle);
 264
 265 boolean
 266 svga_texture_generate_mipmap(struct pipe_context *pipe,
 267                              struct pipe_resource *pt,
 268                              enum pipe_format format,
 269                              unsigned base_level,
 270                              unsigned last_level,
 271                              unsigned first_layer,
 272                              unsigned last_layer);
 273
 274 boolean
 275 svga_texture_transfer_map_upload_create(struct svga_context *svga);
 276
 277 void
 278 svga_texture_transfer_map_upload_destroy(struct svga_context *svga);
 279
 280 boolean
 281 svga_texture_transfer_map_can_upload(struct svga_context *svga,
 282                                      struct svga_transfer *st);
 283
 284 void *
 285 svga_texture_transfer_map_upload(struct svga_context *svga,
 286                                  struct svga_transfer *st);
 287
 288 void
 289 svga_texture_transfer_unmap_upload(struct svga_context *svga,
 290                                    struct svga_transfer *st);
 291
 292 #endif /* SVGA_TEXTURE_H */