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      1 /**************************************************************************
      2  *
      3  * Copyright 2008 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 #ifndef I915_RESOURCE_H
     29 #define I915_RESOURCE_H
     30 
     31 struct i915_screen;
     32 
     33 #include "util/u_transfer.h"
     34 #include "util/u_debug.h"
     35 #include "i915_winsys.h"
     36 
     37 
     38 struct i915_context;
     39 struct i915_screen;
     40 
     41 
     42 struct i915_buffer {
     43    struct u_resource b;
     44    uint8_t *data;
     45    boolean free_on_destroy;
     46 };
     47 
     48 
     49 /* Texture transfer. */
     50 struct i915_transfer {
     51    /* Base class. */
     52    struct pipe_transfer b;
     53    struct pipe_resource *staging_texture;
     54 };
     55 
     56 
     57 #define I915_MAX_TEXTURE_2D_LEVELS 12  /* max 2048x2048 */
     58 #define I915_MAX_TEXTURE_3D_LEVELS  9  /* max 256x256x256 */
     59 
     60 
     61 struct offset_pair {
     62 	unsigned short nblocksx;
     63 	unsigned short nblocksy;
     64 };
     65 
     66 struct i915_texture {
     67    struct u_resource b;
     68 
     69    /* tiling flags */
     70    enum i915_winsys_buffer_tile tiling;
     71    unsigned stride;
     72    unsigned depth_stride;          /* per-image on i945? */
     73    unsigned total_nblocksy;
     74 
     75    unsigned nr_images[I915_MAX_TEXTURE_2D_LEVELS];
     76 
     77    /* Explicitly store the offset of each image for each cube face or
     78     * depth value.
     79     *
     80     * Array [depth] off offsets.
     81     */
     82    struct offset_pair *image_offset[I915_MAX_TEXTURE_2D_LEVELS];
     83 
     84    /* The data is held here:
     85     */
     86    struct i915_winsys_buffer *buffer;
     87 };
     88 
     89 unsigned i915_texture_offset(const struct i915_texture *tex,
     90                              unsigned level, unsigned layer);
     91 void i915_init_screen_resource_functions(struct i915_screen *is);
     92 void i915_init_resource_functions(struct i915_context *i915);
     93 
     94 extern struct u_resource_vtbl i915_buffer_vtbl;
     95 extern struct u_resource_vtbl i915_texture_vtbl;
     96 
     97 static inline struct i915_texture *i915_texture(struct pipe_resource *resource)
     98 {
     99    struct i915_texture *tex = (struct i915_texture *)resource;
    100    assert(tex->b.vtbl == &i915_texture_vtbl);
    101    return tex;
    102 }
    103 
    104 static inline struct i915_buffer *i915_buffer(struct pipe_resource *resource)
    105 {
    106    struct i915_buffer *tex = (struct i915_buffer *)resource;
    107    assert(tex->b.vtbl == &i915_buffer_vtbl);
    108    return tex;
    109 }
    110 
    111 struct pipe_resource *
    112 i915_texture_create(struct pipe_screen *screen,
    113                     const struct pipe_resource *template,
    114                     boolean force_untiled);
    115 
    116 struct pipe_resource *
    117 i915_texture_from_handle(struct pipe_screen * screen,
    118 			 const struct pipe_resource *template,
    119 			 struct winsys_handle *whandle);
    120 
    121 
    122 struct pipe_resource *
    123 i915_user_buffer_create(struct pipe_screen *screen,
    124                         void *ptr,
    125                         unsigned bytes,
    126 			unsigned usage);
    127 
    128 struct pipe_resource *
    129 i915_buffer_create(struct pipe_screen *screen,
    130 		   const struct pipe_resource *template);
    131 
    132 void
    133 i915_buffer_subdata(struct pipe_context *rm_ctx,
    134                     struct pipe_resource *resource,
    135                     unsigned usage, unsigned offset,
    136                     unsigned size, const void *data);
    137 
    138 #endif /* I915_RESOURCE_H */
    139