summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/intel/intel_fbo.h
blob: c57a01c759bc4632b3e7bf73183308f5387320a1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/**************************************************************************
 * 
 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#ifndef INTEL_FBO_H
#define INTEL_FBO_H

#include "intel_screen.h"

struct intel_context;

/**
 * Intel framebuffer, derived from gl_framebuffer.
 */
struct intel_framebuffer
{
   struct gl_framebuffer Base;

   struct intel_renderbuffer *color_rb[3];

   /* Drawable page flipping state */
   GLboolean pf_active;
   GLuint pf_seq;
   GLint pf_planes;
   GLint pf_current_page;
   GLint pf_num_pages;

   /* VBI
    */
   GLuint vbl_waited;

   int64_t swap_ust;
   int64_t swap_missed_ust;

   GLuint swap_count;
   GLuint swap_missed_count;
};


/**
 * Intel renderbuffer, derived from gl_renderbuffer.
 * Note: The PairedDepth and PairedStencil fields use renderbuffer IDs,
 * not pointers because in some circumstances a deleted renderbuffer could
 * result in a dangling pointer here.
 */
struct intel_renderbuffer
{
   struct gl_renderbuffer Base;
   struct intel_region *region;
   GLuint pfPitch;              /* possibly paged flipped pitch */
   GLboolean RenderToTexture;   /* RTT? */

   GLuint PairedDepth;   /**< only used if this is a depth renderbuffer */
   GLuint PairedStencil; /**< only used if this is a stencil renderbuffer */

   GLuint pf_pending;  /**< sequence number of pending flip */

   GLuint vbl_pending;   /**< vblank sequence number of pending flip */

   uint8_t *span_cache;
   unsigned long span_cache_offset;
};

extern struct intel_renderbuffer *intel_renderbuffer(struct gl_renderbuffer
                                                     *rb);

extern void
intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
			      struct intel_region *region);

extern struct intel_renderbuffer *
intel_create_renderbuffer(GLenum intFormat);

extern void intel_fbo_init(struct intel_context *intel);


/* XXX make inline or macro */
extern struct intel_renderbuffer *intel_get_renderbuffer(struct gl_framebuffer
                                                         *fb,
                                                         int attIndex);

extern void intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);


/* XXX make inline or macro */
extern struct intel_region *intel_get_rb_region(struct gl_framebuffer *fb,
                                                GLuint attIndex);



/**
 * Are we currently rendering into a texture?
 */
static INLINE GLboolean
intel_rendering_to_texture(const GLcontext *ctx)
{
   if (ctx->DrawBuffer->Name) {
      /* User-created FBO */
      const struct intel_renderbuffer *irb =
         intel_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
      return irb && irb->RenderToTexture;
   }
   else {
      return GL_FALSE;
   }
}


#endif /* INTEL_FBO_H */