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 "main/macros.h"
35 #include "brw_context.h"
36 #include "intel_mipmap_tree.h"
37 #include "intel_screen.h"
43 struct intel_mipmap_tree;
44 struct intel_texture_image;
47 * Intel renderbuffer, derived from gl_renderbuffer.
49 struct intel_renderbuffer
51 struct swrast_renderbuffer Base;
52 struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
58 * Multiple renderbuffers may simultaneously wrap a single texture and each
59 * provide a different view into that texture. The fields below indicate
60 * which miptree slice is wrapped by this renderbuffer. The fields' values
61 * are consistent with the 'level' and 'layer' parameters of
62 * glFramebufferTextureLayer().
64 * For renderbuffers not created with glFramebufferTexture*(), mt_level and
67 unsigned int mt_level;
68 unsigned int mt_layer;
71 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
76 * gl_renderbuffer is a base class which we subclass. The Class field
77 * is used for simple run-time type checking.
79 #define INTEL_RB_CLASS 0x12345678
83 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
84 * NULL will be returned if the rb isn't really an intel_renderbuffer.
85 * This is determined by checking the ClassID.
87 static INLINE struct intel_renderbuffer *
88 intel_renderbuffer(struct gl_renderbuffer *rb)
90 struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
91 if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
92 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
101 * \brief Return the framebuffer attachment specified by attIndex.
103 * If the framebuffer lacks the specified attachment, then return null.
105 * If the attached renderbuffer is a wrapper, then return wrapped
108 static INLINE struct intel_renderbuffer *
109 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
111 struct gl_renderbuffer *rb;
113 assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
115 rb = fb->Attachment[attIndex].Renderbuffer;
119 return intel_renderbuffer(rb);
123 static INLINE gl_format
124 intel_rb_format(const struct intel_renderbuffer *rb)
126 return rb->Base.Base.Format;
129 extern struct intel_renderbuffer *
130 intel_create_renderbuffer(gl_format format, unsigned num_samples);
132 struct intel_renderbuffer *
133 intel_create_private_renderbuffer(gl_format format, unsigned num_samples);
135 struct gl_renderbuffer*
136 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
137 int width, int height,
141 intel_fbo_init(struct brw_context *brw);
144 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
146 static inline uint32_t
147 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
151 return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
156 intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb);
159 intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb);
162 intel_renderbuffer_att_set_needs_depth_resolve(struct gl_renderbuffer_attachment *att);
166 * \brief Perform a HiZ resolve on the renderbuffer.
168 * It is safe to call this function on a renderbuffer without HiZ. In that
169 * case, the function is a no-op.
171 * \return false if no resolve was needed
174 intel_renderbuffer_resolve_hiz(struct brw_context *brw,
175 struct intel_renderbuffer *irb);
178 * \brief Perform a depth resolve on the renderbuffer.
180 * It is safe to call this function on a renderbuffer without HiZ. In that
181 * case, the function is a no-op.
183 * \return false if no resolve was needed
186 intel_renderbuffer_resolve_depth(struct brw_context *brw,
187 struct intel_renderbuffer *irb);
189 void intel_renderbuffer_move_to_temp(struct brw_context *brw,
190 struct intel_renderbuffer *irb,
194 intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples);
200 #endif /* INTEL_FBO_H */