1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
30 #include "pipe/p_compiler.h"
31 #include "pipe/p_state.h"
32 #include "util/u_transfer.h"
34 #include "svga_screen_cache.h"
35 #include "svga_screen.h"
37 #include "svga_context.h"
41 * Maximum number of discontiguous ranges
43 #define SVGA_BUFFER_MAX_RANGES 32
47 struct svga_winsys_buffer
;
48 struct svga_winsys_surface
;
51 extern struct u_resource_vtbl svga_buffer_vtbl
;
53 struct svga_buffer_range
59 struct svga_3d_update_gb_image
;
62 * This structure describes the bind flags and cache key associated
63 * with the host surface.
65 struct svga_buffer_surface
67 struct list_head list
;
69 struct svga_host_surface_cache_key key
;
70 struct svga_winsys_surface
*handle
;
80 /** This is a superset of b.b.bind */
84 * Regular (non DMA'able) memory.
86 * Used for user buffers or for buffers which we know before hand that can
87 * never be used by the virtual hardware directly, such as constant buffers.
92 * Whether swbuf was created by the user or not.
97 * Whether swbuf is used for this buffer.
102 * Creation key for the host surface handle.
104 * This structure describes all the host surface characteristics so that it
105 * can be looked up in cache, since creating a host surface is often a slow
108 struct svga_host_surface_cache_key key
;
111 * Host surface handle.
113 * This is a platform independent abstraction for host SID. We create when
116 * Only set for non-user buffers.
118 struct svga_winsys_surface
*handle
;
121 * List of surfaces created for this buffer resource to support
122 * incompatible bind flags.
124 struct list_head surfaces
;
127 * Information about ongoing and past map operations.
131 * Number of concurrent mappings.
138 * Ranges that were touched by the application and need to be uploaded to
141 * This information will be copied into dma.boxes, when emiting the
142 * SVGA3dCmdSurfaceDMA command.
144 struct svga_buffer_range ranges
[SVGA_BUFFER_MAX_RANGES
];
149 * Information about uploaded version of user buffers.
152 struct pipe_resource
*buffer
;
155 * We combine multiple user buffers into the same hardware buffer. This
156 * is the relative offset within that buffer.
161 * Range of user buffer that is uploaded in @buffer at @offset.
170 * A piece of GMR memory, with the same size of the buffer. It is created
171 * when mapping the buffer, and will be used to upload vertex data to the
174 * Only set for non-user buffers.
176 struct svga_winsys_buffer
*hwbuf
;
179 * Information about pending DMA uploads.
184 * Whether this buffer has an unfinished DMA upload command.
186 * If not set then the rest of the information is null.
190 SVGA3dSurfaceDMAFlags flags
;
193 * Pointer to the DMA copy box *inside* the command buffer.
195 SVGA3dCopyBox
*boxes
;
198 * Pointer to the sequence of update commands
199 * *inside* the command buffer.
201 struct svga_3d_update_gb_image
*updates
;
204 * Context that has the pending DMA to this buffer.
206 struct svga_context
*svga
;
210 * Linked list head, used to gather all buffers with pending dma uploads on
211 * a context. It is only valid if the dma.pending is set above.
213 struct list_head head
;
215 unsigned size
; /**< Approximate size in bytes */
217 boolean dirty
; /**< Need to do a readback before mapping? */
219 /** In some cases we try to keep the results of the translate_indices()
220 * function from svga_draw_elements.c
223 enum pipe_prim_type orig_prim
, new_prim
;
224 struct pipe_resource
*buffer
;
226 unsigned offset
; /**< first index */
227 unsigned count
; /**< num indices */
228 } translated_indices
;
232 static inline struct svga_buffer
*
233 svga_buffer(struct pipe_resource
*resource
)
235 struct svga_buffer
*buf
= (struct svga_buffer
*) resource
;
236 assert(buf
== NULL
|| buf
->b
.vtbl
== &svga_buffer_vtbl
);
242 * Returns TRUE for user buffers. We may
243 * decide to use an alternate upload path for these buffers.
245 static inline boolean
246 svga_buffer_is_user_buffer(struct pipe_resource
*buffer
)
249 return svga_buffer(buffer
)->user
;
256 * Returns a pointer to a struct svga_winsys_screen given a
257 * struct svga_buffer.
259 static inline struct svga_winsys_screen
*
260 svga_buffer_winsys_screen(struct svga_buffer
*sbuf
)
262 return svga_screen(sbuf
->b
.b
.screen
)->sws
;
267 * Returns whether a buffer has hardware storage that is
268 * visible to the GPU.
270 static inline boolean
271 svga_buffer_has_hw_storage(struct svga_buffer
*sbuf
)
273 if (svga_buffer_winsys_screen(sbuf
)->have_gb_objects
)
274 return (sbuf
->handle
? TRUE
: FALSE
);
276 return (sbuf
->hwbuf
? TRUE
: FALSE
);
280 * Map the hardware storage of a buffer.
281 * \param flags bitmask of PIPE_TRANSFER_* flags
284 svga_buffer_hw_storage_map(struct svga_context
*svga
,
285 struct svga_buffer
*sbuf
,
286 unsigned flags
, boolean
*retry
)
288 struct svga_winsys_screen
*sws
= svga_buffer_winsys_screen(sbuf
);
290 svga
->hud
.num_buffers_mapped
++;
292 if (sws
->have_gb_objects
) {
293 struct svga_winsys_context
*swc
= svga
->swc
;
297 if (swc
->force_coherent
) {
298 flags
|= PIPE_TRANSFER_PERSISTENT
| PIPE_TRANSFER_COHERENT
;
300 map
= swc
->surface_map(swc
, sbuf
->handle
, flags
, retry
, &rebind
);
304 ret
= SVGA3D_BindGBSurface(swc
, sbuf
->handle
);
305 if (ret
!= PIPE_OK
) {
306 svga_context_flush(svga
, NULL
);
307 ret
= SVGA3D_BindGBSurface(swc
, sbuf
->handle
);
308 assert(ret
== PIPE_OK
);
310 svga_context_flush(svga
, NULL
);
315 return sws
->buffer_map(sws
, sbuf
->hwbuf
, flags
);
320 * Unmap the hardware storage of a buffer.
323 svga_buffer_hw_storage_unmap(struct svga_context
*svga
,
324 struct svga_buffer
*sbuf
)
326 struct svga_winsys_screen
*sws
= svga_buffer_winsys_screen(sbuf
);
328 if (sws
->have_gb_objects
) {
329 struct svga_winsys_context
*swc
= svga
->swc
;
332 swc
->surface_unmap(swc
, sbuf
->handle
, &rebind
);
334 SVGA_RETRY(svga
, SVGA3D_BindGBSurface(swc
, sbuf
->handle
));
337 sws
->buffer_unmap(sws
, sbuf
->hwbuf
);
341 struct pipe_resource
*
342 svga_user_buffer_create(struct pipe_screen
*screen
,
347 struct pipe_resource
*
348 svga_buffer_create(struct pipe_screen
*screen
,
349 const struct pipe_resource
*template);
354 * Get the host surface handle for this buffer.
356 * This will ensure the host surface is updated, issuing DMAs as needed.
358 * NOTE: This may insert new commands in the context, so it *must* be called
359 * before reserving command buffer space. And, in order to insert commands
360 * it may need to call svga_context_flush().
362 struct svga_winsys_surface
*
363 svga_buffer_handle(struct svga_context
*svga
,
364 struct pipe_resource
*buf
,
365 unsigned tobind_flags
);
368 svga_context_flush_buffers(struct svga_context
*svga
);
370 struct svga_winsys_buffer
*
371 svga_winsys_buffer_create(struct svga_context
*svga
,
376 #endif /* SVGA_BUFFER_H */