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
39 struct dd_function_table;
40 struct pipe_context;
41
42 /**
43 * Derived renderbuffer class. Just need to add a pointer to the
44 * pipe surface.
45 */
46 struct 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
76 static inline struct st_renderbuffer *
st_renderbuffer(struct gl_renderbuffer * rb)77 st_renderbuffer(struct gl_renderbuffer *rb)
78 {
79 return (struct st_renderbuffer *) rb;
80 }
81
82 static inline struct pipe_resource *
st_get_renderbuffer_resource(struct gl_renderbuffer * rb)83 st_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 */
94 static inline struct st_framebuffer *
st_ws_framebuffer(struct gl_framebuffer * fb)95 st_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
105 extern struct gl_renderbuffer *
106 st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, boolean sw);
107
108 extern void
109 st_update_renderbuffer_surface(struct st_context *st,
110 struct st_renderbuffer *strb);
111
112 extern void
113 st_init_fbo_functions(struct dd_function_table *functions);
114
115 extern void
116 st_regen_renderbuffer_surface(struct st_context *st,
117 struct st_renderbuffer *strb);
118
119 #endif /* ST_CB_FBO_H */
120