src/mesa/drivers/dri/intel/intel_fbo.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 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,
  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 INTEL_FBO_H
  29 #define INTEL_FBO_H
  30
  31 #include "main/formats.h"
  32 #include "intel_screen.h"
  33
  34 struct intel_context;
  35
  36 /**
  37  * Intel renderbuffer, derived from gl_renderbuffer.
  38  */
  39 struct intel_renderbuffer
  40 {
  41    struct gl_renderbuffer Base;
  42    struct intel_region *region;
  43 };
  44
  45
  46 /**
  47  * gl_renderbuffer is a base class which we subclass.  The Class field
  48  * is used for simple run-time type checking.
  49  */
  50 #define INTEL_RB_CLASS 0x12345678
  51
  52
  53 /**
  54  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  55  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  56  * This is determined by checking the ClassID.
  57  */
  58 static INLINE struct intel_renderbuffer *
  59 intel_renderbuffer(struct gl_renderbuffer *rb)
  60 {
  61    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  62    if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
  63       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  64       return irb;
  65    }
  66    else
  67       return NULL;
  68 }
  69
  70
  71 /**
  72  * Return a framebuffer's renderbuffer, named by a BUFFER_x index.
  73  */
  74 static INLINE struct intel_renderbuffer *
  75 intel_get_renderbuffer(struct gl_framebuffer *fb, int attIndex)
  76 {
  77    if (attIndex >= 0)
  78       return intel_renderbuffer(fb->Attachment[attIndex].Renderbuffer);
  79    else
  80       return NULL;
  81 }
  82
  83
  84 extern void
  85 intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
  86                               struct intel_region *region);
  87
  88
  89 extern struct intel_renderbuffer *
  90 intel_create_renderbuffer(gl_format format);
  91
  92
  93 extern void
  94 intel_fbo_init(struct intel_context *intel);
  95
  96
  97 extern void
  98 intel_flip_renderbuffers(struct gl_framebuffer *fb);
  99
 100
 101 static INLINE struct intel_region *
 102 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
 103 {
 104    struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
 105    if (irb)
 106       return irb->region;
 107    else
 108       return NULL;
 109 }
 110
 111
 112 #endif /* INTEL_FBO_H */