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 framebuffer, derived from gl_framebuffer.
  38  */
  39 struct intel_framebuffer
  40 {
  41    struct gl_framebuffer Base;
  42
  43    struct intel_renderbuffer *color_rb[2];
  44
  45    /* VBI
  46     */
  47    GLuint vbl_waited;
  48
  49    int64_t swap_ust;
  50    int64_t swap_missed_ust;
  51
  52    GLuint swap_count;
  53    GLuint swap_missed_count;
  54 };
  55
  56
  57 /**
  58  * Intel renderbuffer, derived from gl_renderbuffer.
  59  */
  60 struct intel_renderbuffer
  61 {
  62    struct gl_renderbuffer Base;
  63    struct intel_region *region;
  64
  65    gl_format texformat;
  66
  67    GLuint vbl_pending;   /**< vblank sequence number of pending flip */
  68
  69    uint8_t *span_cache;
  70    unsigned long span_cache_offset;
  71 };
  72
  73
  74 /**
  75  * gl_renderbuffer is a base class which we subclass.  The Class field
  76  * is used for simple run-time type checking.
  77  */
  78 #define INTEL_RB_CLASS 0x12345678
  79
  80
  81 /**
  82  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  83  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  84  * This is determined by checking the ClassID.
  85  */
  86 static INLINE struct intel_renderbuffer *
  87 intel_renderbuffer(struct gl_renderbuffer *rb)
  88 {
  89    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  90    if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
  91       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  92       return irb;
  93    }
  94    else
  95       return NULL;
  96 }
  97
  98
  99 /**
 100  * Return a framebuffer's renderbuffer, named by a BUFFER_x index.
 101  */
 102 static INLINE struct intel_renderbuffer *
 103 intel_get_renderbuffer(struct gl_framebuffer *fb, int attIndex)
 104 {
 105    if (attIndex >= 0)
 106       return intel_renderbuffer(fb->Attachment[attIndex].Renderbuffer);
 107    else
 108       return NULL;
 109 }
 110
 111
 112 extern void
 113 intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
 114                               struct intel_region *region);
 115
 116
 117 extern struct intel_renderbuffer *
 118 intel_create_renderbuffer(gl_format format);
 119
 120
 121 extern void
 122 intel_fbo_init(struct intel_context *intel);
 123
 124
 125 extern void
 126 intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);
 127
 128
 129 static INLINE struct intel_region *
 130 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
 131 {
 132    struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
 133    if (irb)
 134       return irb->region;
 135    else
 136       return NULL;
 137 }
 138
 139
 140 #endif /* INTEL_FBO_H */