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
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  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.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  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    enum pipe_format format;  /** preferred format, or PIPE_FORMAT_NONE */
  43    GLboolean defined;        /**< defined contents? */
  44
  45    /**
  46     * Used only when hardware accumulation buffers are not supported.
  47     */
  48    boolean software;
  49    size_t stride;
  50    void *data;
  51
  52    struct st_texture_object *rtt;  /**< GL render to texture's texture */
  53    int rtt_level, rtt_face, rtt_slice;
  54
  55    /** Render to texture state */
  56    struct pipe_texture *texture_save;
  57    struct pipe_surface *surface_save;
  58 };
  59
  60
  61 static INLINE struct st_renderbuffer *
  62 st_renderbuffer(struct gl_renderbuffer *rb)
  63 {
  64    return (struct st_renderbuffer *) rb;
  65 }
  66
  67
  68 extern struct gl_renderbuffer *
  69 st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw);
  70
  71 extern void
  72 st_init_fbo_functions(struct dd_function_table *functions);
  73
  74
  75 #endif /* ST_CB_FBO_H */