1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2006 Brian Paul 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 "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 #ifndef FRAMEBUFFER_H
27 #define FRAMEBUFFER_H
28
29 #include "mtypes.h"
30
31 struct gl_config;
32 struct gl_context;
33 struct gl_renderbuffer;
34
35 extern struct gl_framebuffer *
36 _mesa_create_framebuffer(const struct gl_config *visual);
37
38 extern struct gl_framebuffer *
39 _mesa_new_framebuffer(struct gl_context *ctx, GLuint name);
40
41 extern void
42 _mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,
43 const struct gl_config *visual);
44
45 extern void
46 _mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name);
47
48 extern void
49 _mesa_destroy_framebuffer(struct gl_framebuffer *buffer);
50
51 extern void
52 _mesa_free_framebuffer_data(struct gl_framebuffer *buffer);
53
54 extern void
55 _mesa_reference_framebuffer_(struct gl_framebuffer **ptr,
56 struct gl_framebuffer *fb);
57
58 static inline void
_mesa_reference_framebuffer(struct gl_framebuffer ** ptr,struct gl_framebuffer * fb)59 _mesa_reference_framebuffer(struct gl_framebuffer **ptr,
60 struct gl_framebuffer *fb)
61 {
62 if (*ptr != fb)
63 _mesa_reference_framebuffer_(ptr, fb);
64 }
65
66 extern void
67 _mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
68 GLuint width, GLuint height);
69
70
71 extern void
72 _mesa_resizebuffers( struct gl_context *ctx );
73
74 extern void
75 _mesa_scissor_bounding_box(const struct gl_context *ctx,
76 const struct gl_framebuffer *buffer,
77 unsigned idx, int *bbox);
78 extern void
79 _mesa_intersect_scissor_bounding_box(const struct gl_context *ctx,
80 unsigned idx, int *bbox);
81
82 static inline GLuint
_mesa_geometric_width(const struct gl_framebuffer * buffer)83 _mesa_geometric_width(const struct gl_framebuffer *buffer)
84 {
85 return buffer->_HasAttachments ?
86 buffer->Width : buffer->DefaultGeometry.Width;
87 }
88
89 static inline GLuint
_mesa_geometric_height(const struct gl_framebuffer * buffer)90 _mesa_geometric_height(const struct gl_framebuffer *buffer)
91 {
92 return buffer->_HasAttachments ?
93 buffer->Height : buffer->DefaultGeometry.Height;
94 }
95
96 static inline GLuint
_mesa_geometric_samples(const struct gl_framebuffer * buffer)97 _mesa_geometric_samples(const struct gl_framebuffer *buffer)
98 {
99 return buffer->_HasAttachments ?
100 buffer->Visual.samples :
101 buffer->DefaultGeometry._NumSamples;
102 }
103
104 static inline GLuint
_mesa_geometric_layers(const struct gl_framebuffer * buffer)105 _mesa_geometric_layers(const struct gl_framebuffer *buffer)
106 {
107 return buffer->_HasAttachments ?
108 buffer->MaxNumLayers : buffer->DefaultGeometry.Layers;
109 }
110
111 extern void
112 _mesa_update_draw_buffer_bounds(struct gl_context *ctx,
113 struct gl_framebuffer *drawFb);
114
115 extern void
116 _mesa_update_framebuffer_visual(struct gl_context *ctx,
117 struct gl_framebuffer *fb);
118
119 extern void
120 _mesa_update_framebuffer(struct gl_context *ctx,
121 struct gl_framebuffer *readFb,
122 struct gl_framebuffer *drawFb);
123
124 extern GLboolean
125 _mesa_source_buffer_exists(struct gl_context *ctx, GLenum format);
126
127 extern GLboolean
128 _mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format);
129
130 extern GLenum
131 _mesa_get_color_read_type(struct gl_context *ctx);
132
133 extern GLenum
134 _mesa_get_color_read_format(struct gl_context *ctx);
135
136 extern struct gl_renderbuffer *
137 _mesa_get_read_renderbuffer_for_format(const struct gl_context *ctx,
138 GLenum format);
139
140 extern void
141 _mesa_print_framebuffer(const struct gl_framebuffer *fb);
142
143 extern bool
144 _mesa_is_front_buffer_reading(const struct gl_framebuffer *fb);
145
146 extern bool
147 _mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb);
148
149 extern bool
150 _mesa_is_multisample_enabled(const struct gl_context *ctx);
151
152 extern bool
153 _mesa_is_alpha_test_enabled(const struct gl_context *ctx);
154
155 extern bool
156 _mesa_is_alpha_to_coverage_enabled(const struct gl_context *ctx);
157
158 #endif /* FRAMEBUFFER_H */
159