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 GLuint map_x, map_y, map_w, map_h;
51 /** Only used by depth renderbuffers for which HiZ is enabled. */
52 struct intel_region *hiz_region;
55 * \name Packed depth/stencil unwrappers
57 * If the intel_context is using separate stencil and this renderbuffer has
58 * a a packed depth/stencil format, then wrapped_depth and wrapped_stencil
59 * are the real renderbuffers.
61 struct gl_renderbuffer *wrapped_depth;
62 struct gl_renderbuffer *wrapped_stencil;
66 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
71 * gl_renderbuffer is a base class which we subclass. The Class field
72 * is used for simple run-time type checking.
74 #define INTEL_RB_CLASS 0x12345678
78 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
79 * NULL will be returned if the rb isn't really an intel_renderbuffer.
80 * This is determined by checking the ClassID.
82 static INLINE struct intel_renderbuffer *
83 intel_renderbuffer(struct gl_renderbuffer *rb)
85 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
86 if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
87 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
96 * \brief Return the framebuffer attachment specified by attIndex.
98 * If the framebuffer lacks the specified attachment, then return null.
100 * If the attached renderbuffer is a wrapper, then return wrapped
103 static INLINE struct intel_renderbuffer *
104 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
106 struct gl_renderbuffer *rb;
107 struct intel_renderbuffer *irb;
109 assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
111 rb = fb->Attachment[attIndex].Renderbuffer;
115 irb = intel_renderbuffer(rb);
121 if (irb->wrapped_depth) {
122 irb = intel_renderbuffer(irb->wrapped_depth);
126 if (irb->wrapped_stencil) {
127 irb = intel_renderbuffer(irb->wrapped_stencil);
138 * If the framebuffer has a depth buffer attached, then return its HiZ region.
139 * The HiZ region may be null.
141 static INLINE struct intel_region*
142 intel_framebuffer_get_hiz_region(struct gl_framebuffer *fb)
144 struct intel_renderbuffer *rb = NULL;
146 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
149 return rb->hiz_region;
155 intel_framebuffer_has_hiz(struct gl_framebuffer *fb)
157 return intel_framebuffer_get_hiz_region(fb) != NULL;
160 extern struct intel_renderbuffer *
161 intel_create_renderbuffer(gl_format format);
163 struct gl_renderbuffer*
164 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
165 int width, int height,
169 intel_alloc_renderbuffer_storage(struct gl_context * ctx,
170 struct gl_renderbuffer *rb,
171 GLenum internalFormat,
172 GLuint width, GLuint height);
175 intel_fbo_init(struct intel_context *intel);
179 intel_flip_renderbuffers(struct gl_framebuffer *fb);
182 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb,
183 struct intel_texture_image *intel_image,
187 intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
191 static INLINE struct intel_region *
192 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
194 struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
201 #endif /* INTEL_FBO_H */