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 "intel_screen.h"
  32
  33 struct intel_context;
  34
  35 /**
  36  * Intel framebuffer, derived from gl_framebuffer.
  37  */
  38 struct intel_framebuffer
  39 {
  40    struct gl_framebuffer Base;
  41
  42    struct intel_renderbuffer *color_rb[2];
  43
  44    /* VBI
  45     */
  46    GLuint vbl_waited;
  47
  48    int64_t swap_ust;
  49    int64_t swap_missed_ust;
  50
  51    GLuint swap_count;
  52    GLuint swap_missed_count;
  53 };
  54
  55
  56 /**
  57  * Intel renderbuffer, derived from gl_renderbuffer.
  58  * Note: The PairedDepth and PairedStencil fields use renderbuffer IDs,
  59  * not pointers because in some circumstances a deleted renderbuffer could
  60  * result in a dangling pointer here.
  61  */
  62 struct intel_renderbuffer
  63 {
  64    struct gl_renderbuffer Base;
  65    struct intel_region *region;
  66    GLboolean RenderToTexture;   /* RTT? */
  67
  68    GLuint vbl_pending;   /**< vblank sequence number of pending flip */
  69
  70    uint8_t *span_cache;
  71    unsigned long span_cache_offset;
  72 };
  73
  74
  75 /**
  76  * gl_renderbuffer is a base class which we subclass.  The Class field
  77  * is used for simple run-time type checking.
  78  */
  79 #define INTEL_RB_CLASS 0x12345678
  80
  81
  82 /**
  83  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  84  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  85  * This is determined by checking the ClassID.
  86  */
  87 static INLINE struct intel_renderbuffer *
  88 intel_renderbuffer(struct gl_renderbuffer *rb)
  89 {
  90    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  91    if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
  92       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  93       return irb;
  94    }
  95    else
  96       return NULL;
  97 }
  98
  99
 100 /**
 101  * Return a framebuffer's renderbuffer, named by a BUFFER_x index.
 102  */
 103 static INLINE struct intel_renderbuffer *
 104 intel_get_renderbuffer(struct gl_framebuffer *fb, int attIndex)
 105 {
 106    if (attIndex >= 0)
 107       return intel_renderbuffer(fb->Attachment[attIndex].Renderbuffer);
 108    else
 109       return NULL;
 110 }
 111
 112
 113 extern void
 114 intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
 115                               struct intel_region *region);
 116
 117
 118 extern struct intel_renderbuffer *
 119 intel_create_renderbuffer(GLenum intFormat);
 120
 121
 122 extern void
 123 intel_fbo_init(struct intel_context *intel);
 124
 125
 126 extern void
 127 intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);
 128
 129
 130 static INLINE struct intel_region *
 131 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
 132 {
 133    struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
 134    if (irb)
 135       return irb->region;
 136    else
 137       return NULL;
 138 }
 139
 140
 141 #endif /* INTEL_FBO_H */