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_mipmap_tree;
39 struct intel_texture_image;
42 * Intel renderbuffer, derived from gl_renderbuffer.
44 struct intel_renderbuffer
46 struct swrast_renderbuffer Base;
47 struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
50 /* Current texture image this renderbuffer is attached to. */
51 struct gl_texture_image *tex_image;
57 * Multiple renderbuffers may simultaneously wrap a single texture and each
58 * provide a different view into that texture. The fields below indicate
59 * which miptree slice is wrapped by this renderbuffer. The fields' values
60 * are consistent with the 'level' and 'layer' parameters of
61 * glFramebufferTextureLayer().
63 * For renderbuffers not created with glFramebufferTexture*(), mt_level and
66 unsigned int mt_level;
67 unsigned int mt_layer;
70 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
75 * gl_renderbuffer is a base class which we subclass. The Class field
76 * is used for simple run-time type checking.
78 #define INTEL_RB_CLASS 0x12345678
82 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
83 * NULL will be returned if the rb isn't really an intel_renderbuffer.
84 * This is determined by checking the ClassID.
86 static INLINE struct intel_renderbuffer *
87 intel_renderbuffer(struct gl_renderbuffer *rb)
89 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
90 if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
91 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
100 * \brief Return the framebuffer attachment specified by attIndex.
102 * If the framebuffer lacks the specified attachment, then return null.
104 * If the attached renderbuffer is a wrapper, then return wrapped
107 static INLINE struct intel_renderbuffer *
108 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
110 struct gl_renderbuffer *rb;
112 assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
114 rb = fb->Attachment[attIndex].Renderbuffer;
118 return intel_renderbuffer(rb);
122 static INLINE gl_format
123 intel_rb_format(const struct intel_renderbuffer *rb)
125 return rb->Base.Base.Format;
130 intel_framebuffer_has_hiz(struct gl_framebuffer *fb);
132 extern struct intel_renderbuffer *
133 intel_create_renderbuffer(gl_format format);
135 struct gl_renderbuffer*
136 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
137 int width, int height,
141 intel_alloc_renderbuffer_storage(struct gl_context * ctx,
142 struct gl_renderbuffer *rb,
143 GLenum internalFormat,
144 GLuint width, GLuint height);
147 intel_fbo_init(struct intel_context *intel);
151 intel_flip_renderbuffers(struct gl_framebuffer *fb);
154 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
157 intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
162 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
165 intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb);
168 intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb);
172 * \brief Perform a HiZ resolve on the renderbuffer.
174 * It is safe to call this function on a renderbuffer without HiZ. In that
175 * case, the function is a no-op.
177 * \return false if no resolve was needed
180 intel_renderbuffer_resolve_hiz(struct intel_context *intel,
181 struct intel_renderbuffer *irb);
184 * \brief Perform a depth resolve on the renderbuffer.
186 * It is safe to call this function on a renderbuffer without HiZ. In that
187 * case, the function is a no-op.
189 * \return false if no resolve was needed
192 intel_renderbuffer_resolve_depth(struct intel_context *intel,
193 struct intel_renderbuffer *irb);
195 #endif /* INTEL_FBO_H */