workbench/libs/mesa/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
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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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 #include "main/compiler.h"
  33 #include "main/glheader.h"
  34 #include "main/mtypes.h"
  35
  36 #include "pipe/p_compiler.h"
  37 #include "pipe/p_format.h"
  38
  39 struct dd_function_table;
  40 struct pipe_context;
  41
  42 /**
  43  * Derived renderbuffer class.  Just need to add a pointer to the
  44  * pipe surface.
  45  */
  46 struct st_renderbuffer
  47 {
  48    struct gl_renderbuffer Base;
  49    struct pipe_resource *texture;
  50    struct pipe_surface *surface; /* temporary view into texture */
  51    struct pipe_sampler_view *sampler_view;
  52    enum pipe_format format;  /** preferred format, or PIPE_FORMAT_NONE */
  53    GLboolean defined;        /**< defined contents? */
  54
  55    /**
  56     * Used only when hardware accumulation buffers are not supported.
  57     */
  58    boolean software;
  59    size_t stride;
  60    void *data;
  61
  62    struct st_texture_object *rtt;  /**< GL render to texture's texture */
  63    int rtt_level, rtt_face, rtt_slice;
  64
  65    /** Render to texture state */
  66    struct pipe_resource *texture_save;
  67    struct pipe_surface *surface_save;
  68    struct pipe_sampler_view *sampler_view_save;
  69 };
  70
  71
  72 static INLINE struct st_renderbuffer *
  73 st_renderbuffer(struct gl_renderbuffer *rb)
  74 {
  75    return (struct st_renderbuffer *) rb;
  76 }
  77
  78
  79 extern struct gl_renderbuffer *
  80 st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw);
  81
  82 extern void
  83 st_init_fbo_functions(struct dd_function_table *functions);
  84
  85 /* XXX unused ? */
  86 extern struct pipe_sampler_view *
  87 st_get_renderbuffer_sampler_view(struct st_renderbuffer *rb,
  88                                  struct pipe_context *pipe);
  89
  90
  91 extern GLboolean
  92 st_is_depth_stencil_combined(const struct gl_renderbuffer_attachment *depth,
  93                              const struct gl_renderbuffer_attachment *stencil);
  94
  95
  96 #endif /* ST_CB_FBO_H */