src/gallium/drivers/softpipe/sp_texture.h

   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 */