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