src/mesa/state_tracker/st_cb_fbo.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #ifndef ST_CB_FBO_H
  30 #define ST_CB_FBO_H
  31
  32
  33 /**
  34  * Derived renderbuffer class.  Just need to add a pointer to the
  35  * pipe surface.
  36  */
  37 struct st_renderbuffer
  38 {
  39    struct gl_renderbuffer Base;
  40    struct pipe_texture *texture;
  41    struct pipe_surface *surface; /* temporary view into texture */
  42    struct pipe_sampler_view *sampler_view;
  43    enum pipe_format format;  /** preferred format, or PIPE_FORMAT_NONE */
  44    GLboolean defined;        /**< defined contents? */
  45
  46    /**
  47     * Used only when hardware accumulation buffers are not supported.
  48     */
  49    boolean software;
  50    size_t stride;
  51    void *data;
  52
  53    struct st_texture_object *rtt;  /**< GL render to texture's texture */
  54    int rtt_level, rtt_face, rtt_slice;
  55
  56    /** Render to texture state */
  57    struct pipe_texture *texture_save;
  58    struct pipe_surface *surface_save;
  59    struct pipe_sampler_view *sampler_view_save;
  60 };
  61
  62
  63 static INLINE struct st_renderbuffer *
  64 st_renderbuffer(struct gl_renderbuffer *rb)
  65 {
  66    return (struct st_renderbuffer *) rb;
  67 }
  68
  69
  70 extern struct gl_renderbuffer *
  71 st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw);
  72
  73 extern void
  74 st_init_fbo_functions(struct dd_function_table *functions);
  75
  76 extern struct pipe_sampler_view *
  77 st_renderbuffer_get_sampler_view(struct st_renderbuffer *rb,
  78                                  struct pipe_context *pipe);
  79
  80
  81 #endif /* ST_CB_FBO_H */