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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 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 SP_TEXTURE_H
     29 #define SP_TEXTURE_H
     30 
     31 
     32 #include "pipe/p_state.h"
     33 #include "sp_limits.h"
     34 
     35 
     36 struct pipe_context;
     37 struct pipe_screen;
     38 struct softpipe_context;
     39 
     40 
     41 /**
     42  * Subclass of pipe_resource.
     43  */
     44 struct softpipe_resource
     45 {
     46    struct pipe_resource base;
     47 
     48    unsigned long level_offset[SP_MAX_TEXTURE_2D_LEVELS];
     49    unsigned stride[SP_MAX_TEXTURE_2D_LEVELS];
     50    unsigned img_stride[SP_MAX_TEXTURE_2D_LEVELS];
     51 
     52    /**
     53     * Display target, only valid for PIPE_TEXTURE_2D with the
     54     * PIPE_BIND_DISPLAY_TARGET usage.
     55     */
     56    struct sw_displaytarget *dt;
     57 
     58    /**
     59     * Malloc'ed data for regular buffers and textures, or a mapping to dt above.
     60     */
     61    void *data;
     62 
     63    /* True if texture images are power-of-two in all dimensions:
     64     */
     65    boolean pot;
     66    boolean userBuffer;
     67 
     68    unsigned timestamp;
     69 };
     70 
     71 
     72 /**
     73  * Subclass of pipe_transfer.
     74  */
     75 struct softpipe_transfer
     76 {
     77    struct pipe_transfer base;
     78 
     79    unsigned long offset;
     80 };
     81 
     82 
     83 /** cast wrappers */
     84 static inline struct softpipe_resource *
     85 softpipe_resource(struct pipe_resource *pt)
     86 {
     87    return (struct softpipe_resource *) pt;
     88 }
     89 
     90 static inline struct softpipe_transfer *
     91 softpipe_transfer(struct pipe_transfer *pt)
     92 {
     93    return (struct softpipe_transfer *) pt;
     94 }
     95 
     96 
     97 /**
     98  * Return pointer to a resource's actual data.
     99  * This is a short-cut instead of using map()/unmap(), which should
    100  * probably be fixed.
    101  */
    102 static inline void *
    103 softpipe_resource_data(struct pipe_resource *pt)
    104 {
    105    if (!pt)
    106       return NULL;
    107 
    108    assert(softpipe_resource(pt)->dt == NULL);
    109    return softpipe_resource(pt)->data;
    110 }
    111 
    112 
    113 extern void
    114 softpipe_init_screen_texture_funcs(struct pipe_screen *screen);
    115 
    116 extern void
    117 softpipe_init_texture_funcs(struct pipe_context *pipe);
    118 
    119 unsigned
    120 softpipe_get_tex_image_offset(const struct softpipe_resource *spr,
    121                               unsigned level, unsigned layer);
    122 #endif /* SP_TEXTURE */
    123