1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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
29#ifndef ST_CB_FBO_H
30#define ST_CB_FBO_H
31
32#include "main/fbobject.h"
33#include "main/glheader.h"
34#include "main/mtypes.h"
35
36#include "pipe/p_compiler.h"
37#include "pipe/p_format.h"
38
39struct dd_function_table;
40struct pipe_context;
41
42/**
43 * Derived renderbuffer class.  Just need to add a pointer to the
44 * pipe surface.
45 */
46struct st_renderbuffer
47{
48   struct gl_renderbuffer Base;
49   struct pipe_resource *texture;
50   /* This points to either "surface_linear" or "surface_srgb".
51    * It doesn't hold the pipe_surface reference. The other two do.
52    */
53   struct pipe_surface *surface;
54   struct pipe_surface *surface_linear;
55   struct pipe_surface *surface_srgb;
56   GLboolean defined;        /**< defined contents? */
57
58   struct pipe_transfer *transfer; /**< only used when mapping the resource */
59
60   /**
61    * Used only when hardware accumulation buffers are not supported.
62    */
63   boolean software;
64   void *data;
65
66   bool use_readpix_cache;
67
68   /* Inputs from Driver.RenderTexture, don't use directly. */
69   boolean is_rtt; /**< whether Driver.RenderTexture was called */
70   unsigned rtt_face, rtt_slice;
71   boolean rtt_layered; /**< whether glFramebufferTexture was called */
72   unsigned rtt_nr_samples; /**< from FramebufferTexture2DMultisampleEXT */
73};
74
75
76static inline struct st_renderbuffer *
77st_renderbuffer(struct gl_renderbuffer *rb)
78{
79   return (struct st_renderbuffer *) rb;
80}
81
82static inline struct pipe_resource *
83st_get_renderbuffer_resource(struct gl_renderbuffer *rb)
84{
85   return st_renderbuffer(rb)->texture;
86}
87
88/**
89 * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
90 * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
91 * We'll only return non-null for window system framebuffers.
92 * Note that this function may fail.
93 */
94static inline struct st_framebuffer *
95st_ws_framebuffer(struct gl_framebuffer *fb)
96{
97   /* FBO cannot be casted.  See st_new_framebuffer */
98   if (fb && _mesa_is_winsys_fbo(fb) &&
99       fb != _mesa_get_incomplete_framebuffer())
100      return (struct st_framebuffer *) fb;
101   return NULL;
102}
103
104
105extern struct gl_renderbuffer *
106st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, boolean sw);
107
108extern void
109st_update_renderbuffer_surface(struct st_context *st,
110                               struct st_renderbuffer *strb);
111
112extern void
113st_init_fbo_functions(struct dd_function_table *functions);
114
115extern void
116st_regen_renderbuffer_surface(struct st_context *st,
117                              struct st_renderbuffer *strb);
118
119#endif /* ST_CB_FBO_H */
120