1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
33 #include "main/formats.h"
34 #include "intel_context.h"
35 #include "intel_screen.h"
38 struct intel_texture_image
;
41 * Intel renderbuffer, derived from gl_renderbuffer.
43 struct intel_renderbuffer
45 struct gl_renderbuffer Base
;
46 struct intel_region
*region
;
48 /** Only used by depth renderbuffers for which HiZ is enabled. */
49 struct intel_region
*hiz_region
;
52 * \name Packed depth/stencil unwrappers
54 * If the intel_context is using separate stencil and this renderbuffer has
55 * a a packed depth/stencil format, then wrapped_depth and wrapped_stencil
56 * are the real renderbuffers.
58 struct gl_renderbuffer
*wrapped_depth
;
59 struct gl_renderbuffer
*wrapped_stencil
;
63 GLuint draw_x
, draw_y
; /**< Offset of drawing within the region */
68 * gl_renderbuffer is a base class which we subclass. The Class field
69 * is used for simple run-time type checking.
71 #define INTEL_RB_CLASS 0x12345678
75 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
76 * NULL will be returned if the rb isn't really an intel_renderbuffer.
77 * This is determined by checking the ClassID.
79 static INLINE
struct intel_renderbuffer
*
80 intel_renderbuffer(struct gl_renderbuffer
*rb
)
82 struct intel_renderbuffer
*irb
= (struct intel_renderbuffer
*) rb
;
83 if (irb
&& irb
->Base
.ClassID
== INTEL_RB_CLASS
) {
84 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
93 * \brief Return the framebuffer attachment specified by attIndex.
95 * If the framebuffer lacks the specified attachment, then return null.
97 * If the attached renderbuffer is a wrapper, then return wrapped
100 static INLINE
struct intel_renderbuffer
*
101 intel_get_renderbuffer(struct gl_framebuffer
*fb
, gl_buffer_index attIndex
)
103 struct gl_renderbuffer
*rb
;
104 struct intel_renderbuffer
*irb
;
106 assert((unsigned)attIndex
< ARRAY_SIZE(fb
->Attachment
));
108 rb
= fb
->Attachment
[attIndex
].Renderbuffer
;
112 irb
= intel_renderbuffer(rb
);
118 if (irb
->wrapped_depth
) {
119 irb
= intel_renderbuffer(irb
->wrapped_depth
);
123 if (irb
->wrapped_stencil
) {
124 irb
= intel_renderbuffer(irb
->wrapped_stencil
);
135 * If the framebuffer has a depth buffer attached, then return its HiZ region.
136 * The HiZ region may be null.
138 static INLINE
struct intel_region
*
139 intel_framebuffer_get_hiz_region(struct gl_framebuffer
*fb
)
141 struct intel_renderbuffer
*rb
= NULL
;
143 rb
= intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
146 return rb
->hiz_region
;
152 intel_framebuffer_has_hiz(struct gl_framebuffer
*fb
)
154 return intel_framebuffer_get_hiz_region(fb
) != NULL
;
157 extern struct intel_renderbuffer
*
158 intel_create_renderbuffer(gl_format format
);
160 struct gl_renderbuffer
*
161 intel_create_wrapped_renderbuffer(struct gl_context
* ctx
,
162 int width
, int height
,
166 intel_alloc_renderbuffer_storage(struct gl_context
* ctx
,
167 struct gl_renderbuffer
*rb
,
168 GLenum internalFormat
,
169 GLuint width
, GLuint height
);
172 intel_fbo_init(struct intel_context
*intel
);
176 intel_flip_renderbuffers(struct gl_framebuffer
*fb
);
179 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
,
180 struct intel_texture_image
*intel_image
,
184 intel_renderbuffer_tile_offsets(struct intel_renderbuffer
*irb
,
188 static INLINE
struct intel_region
*
189 intel_get_rb_region(struct gl_framebuffer
*fb
, GLuint attIndex
)
191 struct intel_renderbuffer
*irb
= intel_get_renderbuffer(fb
, attIndex
);
198 #endif /* INTEL_FBO_H */