1 /**************************************************************************
2 *
3 * Copyright 2006 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 #ifndef INTEL_FBO_H
29 #define INTEL_FBO_H
30
31 #include <stdbool.h>
32 #include <assert.h>
33 #include "main/formats.h"
34 #include "main/macros.h"
35 #include "intel_context.h"
36 #include "intel_mipmap_tree.h"
37 #include "intel_screen.h"
38
39 struct intel_context;
40 struct intel_mipmap_tree;
41 struct intel_texture_image;
42
43 /**
44 * Intel renderbuffer, derived from gl_renderbuffer.
45 */
46 struct intel_renderbuffer
47 {
48 struct swrast_renderbuffer Base;
49 struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
50
51 /**
52 * \name Miptree view
53 * \{
54 *
55 * Multiple renderbuffers may simultaneously wrap a single texture and each
56 * provide a different view into that texture. The fields below indicate
57 * which miptree slice is wrapped by this renderbuffer. The fields' values
58 * are consistent with the 'level' and 'layer' parameters of
59 * glFramebufferTextureLayer().
60 *
61 * For renderbuffers not created with glFramebufferTexture*(), mt_level and
62 * mt_layer are 0.
63 */
64 unsigned int mt_level;
65 unsigned int mt_layer;
66 /** \} */
67
68 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
69 };
70
71
72 /**
73 * gl_renderbuffer is a base class which we subclass. The Class field
74 * is used for simple run-time type checking.
75 */
76 #define INTEL_RB_CLASS 0x12345678
77
78
79 /**
80 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
81 * NULL will be returned if the rb isn't really an intel_renderbuffer.
82 * This is determined by checking the ClassID.
83 */
84 static inline struct intel_renderbuffer *
intel_renderbuffer(struct gl_renderbuffer * rb)85 intel_renderbuffer(struct gl_renderbuffer *rb)
86 {
87 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
88 if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS)
89 return irb;
90 else
91 return NULL;
92 }
93
94
95 /**
96 * \brief Return the framebuffer attachment specified by attIndex.
97 *
98 * If the framebuffer lacks the specified attachment, then return null.
99 *
100 * If the attached renderbuffer is a wrapper, then return wrapped
101 * renderbuffer.
102 */
103 static inline struct intel_renderbuffer *
intel_get_renderbuffer(struct gl_framebuffer * fb,gl_buffer_index attIndex)104 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
105 {
106 struct gl_renderbuffer *rb;
107
108 assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
109
110 rb = fb->Attachment[attIndex].Renderbuffer;
111 if (!rb)
112 return NULL;
113
114 return intel_renderbuffer(rb);
115 }
116
117
118 static inline mesa_format
intel_rb_format(const struct intel_renderbuffer * rb)119 intel_rb_format(const struct intel_renderbuffer *rb)
120 {
121 return rb->Base.Base.Format;
122 }
123
124 extern struct intel_renderbuffer *
125 intel_create_renderbuffer(mesa_format format);
126
127 struct intel_renderbuffer *
128 intel_create_private_renderbuffer(mesa_format format);
129
130 struct gl_renderbuffer*
131 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
132 int width, int height,
133 mesa_format format);
134
135 extern void
136 intel_fbo_init(struct intel_context *intel);
137
138
139 extern void
140 intel_flip_renderbuffers(struct gl_framebuffer *fb);
141
142 void
143 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
144
145 static inline uint32_t
intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer * irb,uint32_t * tile_x,uint32_t * tile_y)146 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
147 uint32_t *tile_x,
148 uint32_t *tile_y)
149 {
150 return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
151 tile_x, tile_y);
152 }
153
154 struct intel_region*
155 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
156
157 #endif /* INTEL_FBO_H */
158