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31 #include "main/formats.h"
32 #include "main/macros.h"
33 #include "brw_context.h"
34 #include "intel_mipmap_tree.h"
35 #include "intel_screen.h"
41 struct intel_mipmap_tree
;
44 * Intel renderbuffer, derived from gl_renderbuffer.
46 struct intel_renderbuffer
48 struct swrast_renderbuffer Base
;
50 * The real renderbuffer storage.
52 * This is multisampled if NumSamples is > 1.
54 struct intel_mipmap_tree
*mt
;
57 * Downsampled contents for window-system MSAA renderbuffers.
59 * For window system MSAA color buffers, the singlesample_mt is shared with
60 * other processes in DRI2 (and in DRI3, it's the image buffer managed by
61 * glx_dri3.c), while mt is private to our process. To do a swapbuffers,
62 * we have to downsample out of mt into singlesample_mt. For depth and
63 * stencil buffers, the singlesample_mt is also private, and since we don't
64 * expect to need to do resolves (except if someone does a glReadPixels()
65 * or glCopyTexImage()), we just temporarily allocate singlesample_mt when
66 * asked to map the renderbuffer.
68 struct intel_mipmap_tree
*singlesample_mt
;
74 * Multiple renderbuffers may simultaneously wrap a single texture and each
75 * provide a different view into that texture. The fields below indicate
76 * which miptree slice is wrapped by this renderbuffer. The fields' values
77 * are consistent with the 'level' and 'layer' parameters of
78 * glFramebufferTextureLayer().
80 * For renderbuffers not created with glFramebufferTexture*(), mt_level and
83 * Note: for a 2D multisample array texture on Gen7+ using
84 * INTEL_MSAA_LAYOUT_UMS or INTEL_MSAA_LAYOUT_CMS, mt_layer is the physical
85 * layer holding sample 0. So, for example, if mt->num_samples == 4, then
86 * logical layer n corresponds to mt_layer == 4*n.
88 unsigned int mt_level
;
89 unsigned int mt_layer
;
91 /* The number of attached logical layers. */
92 unsigned int layer_count
;
95 GLuint draw_x
, draw_y
; /**< Offset of drawing within the region */
98 * Set to true at every draw call, to indicate if a window-system
99 * renderbuffer needs to be downsampled before using singlesample_mt.
101 bool need_downsample
;
104 * Set to true when doing an intel_renderbuffer_map()/unmap() that requires
105 * an upsample at the end.
107 bool need_map_upsample
;
110 * Set to true if singlesample_mt is temporary storage that persists only
111 * for the duration of a mapping.
113 bool singlesample_mt_is_tmp
;
118 * gl_renderbuffer is a base class which we subclass. The Class field
119 * is used for simple run-time type checking.
121 #define INTEL_RB_CLASS 0x12345678
125 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
126 * NULL will be returned if the rb isn't really an intel_renderbuffer.
127 * This is determined by checking the ClassID.
129 static inline struct intel_renderbuffer
*
130 intel_renderbuffer(struct gl_renderbuffer
*rb
)
132 struct intel_renderbuffer
*irb
= (struct intel_renderbuffer
*) rb
;
133 if (irb
&& irb
->Base
.Base
.ClassID
== INTEL_RB_CLASS
) {
134 /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
143 * \brief Return the framebuffer attachment specified by attIndex.
145 * If the framebuffer lacks the specified attachment, then return null.
147 * If the attached renderbuffer is a wrapper, then return wrapped
150 static inline struct intel_renderbuffer
*
151 intel_get_renderbuffer(struct gl_framebuffer
*fb
, gl_buffer_index attIndex
)
153 struct gl_renderbuffer
*rb
;
155 assert((unsigned)attIndex
< ARRAY_SIZE(fb
->Attachment
));
157 rb
= fb
->Attachment
[attIndex
].Renderbuffer
;
161 return intel_renderbuffer(rb
);
165 static inline mesa_format
166 intel_rb_format(const struct intel_renderbuffer
*rb
)
168 return rb
->Base
.Base
.Format
;
171 extern struct intel_renderbuffer
*
172 intel_create_renderbuffer(mesa_format format
, unsigned num_samples
);
174 struct intel_renderbuffer
*
175 intel_create_private_renderbuffer(mesa_format format
, unsigned num_samples
);
177 struct gl_renderbuffer
*
178 intel_create_wrapped_renderbuffer(struct gl_context
* ctx
,
179 int width
, int height
,
183 intel_fbo_init(struct brw_context
*brw
);
186 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer
*irb
);
188 static inline uint32_t
189 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer
*irb
,
193 return intel_miptree_get_tile_offsets(irb
->mt
, irb
->mt_level
, irb
->mt_layer
,
198 intel_renderbuffer_has_hiz(struct intel_renderbuffer
*irb
);
201 intel_renderbuffer_att_set_needs_depth_resolve(struct gl_renderbuffer_attachment
*att
);
205 * \brief Perform a HiZ resolve on the renderbuffer.
207 * It is safe to call this function on a renderbuffer without HiZ. In that
208 * case, the function is a no-op.
210 * \return false if no resolve was needed
213 intel_renderbuffer_resolve_hiz(struct brw_context
*brw
,
214 struct intel_renderbuffer
*irb
);
217 * \brief Perform a depth resolve on the renderbuffer.
219 * It is safe to call this function on a renderbuffer without HiZ. In that
220 * case, the function is a no-op.
222 * \return false if no resolve was needed
225 intel_renderbuffer_resolve_depth(struct brw_context
*brw
,
226 struct intel_renderbuffer
*irb
);
228 void intel_renderbuffer_move_to_temp(struct brw_context
*brw
,
229 struct intel_renderbuffer
*irb
,
233 intel_renderbuffer_downsample(struct brw_context
*brw
,
234 struct intel_renderbuffer
*irb
);
237 intel_renderbuffer_upsample(struct brw_context
*brw
,
238 struct intel_renderbuffer
*irb
);
240 void brw_render_cache_set_clear(struct brw_context
*brw
);
241 void brw_render_cache_set_add_bo(struct brw_context
*brw
, drm_intel_bo
*bo
);
242 void brw_render_cache_set_check_flush(struct brw_context
*brw
, drm_intel_bo
*bo
);
245 intel_quantize_num_samples(struct intel_screen
*intel
, unsigned num_samples
);
251 #endif /* INTEL_FBO_H */