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 * Creation key for the host surface handle.
99 * This structure describes all the host surface characteristics so that it
100 * can be looked up in cache, since creating a host surface is often a slow
103 struct svga_host_surface_cache_key key
;
106 * Host surface handle.
108 * This is a platform independent abstraction for host SID. We create when
111 * Only set for non-user buffers.
113 struct svga_winsys_surface
*handle
;
116 * List of surfaces created for this buffer resource to support
117 * incompatible bind flags.
119 struct list_head surfaces
;
122 * Information about ongoing and past map operations.
126 * Number of concurrent mappings.
133 * Ranges that were touched by the application and need to be uploaded to
136 * This information will be copied into dma.boxes, when emiting the
137 * SVGA3dCmdSurfaceDMA command.
139 struct svga_buffer_range ranges
[SVGA_BUFFER_MAX_RANGES
];
144 * Information about uploaded version of user buffers.
147 struct pipe_resource
*buffer
;
150 * We combine multiple user buffers into the same hardware buffer. This
151 * is the relative offset within that buffer.
156 * Range of user buffer that is uploaded in @buffer at @offset.
165 * A piece of GMR memory, with the same size of the buffer. It is created
166 * when mapping the buffer, and will be used to upload vertex data to the
169 * Only set for non-user buffers.
171 struct svga_winsys_buffer
*hwbuf
;
174 * Information about pending DMA uploads.
179 * Whether this buffer has an unfinished DMA upload command.
181 * If not set then the rest of the information is null.
185 SVGA3dSurfaceDMAFlags flags
;
188 * Pointer to the DMA copy box *inside* the command buffer.
190 SVGA3dCopyBox
*boxes
;
193 * Pointer to the sequence of update commands
194 * *inside* the command buffer.
196 struct svga_3d_update_gb_image
*updates
;
199 * Context that has the pending DMA to this buffer.
201 struct svga_context
*svga
;
205 * Linked list head, used to gather all buffers with pending dma uploads on
206 * a context. It is only valid if the dma.pending is set above.
208 struct list_head head
;
210 unsigned size
; /**< Approximate size in bytes */
212 boolean dirty
; /**< Need to do a readback before mapping? */
214 /** In some cases we try to keep the results of the translate_indices()
215 * function from svga_draw_elements.c
218 enum pipe_prim_type orig_prim
, new_prim
;
219 struct pipe_resource
*buffer
;
221 unsigned offset
; /**< first index */
222 unsigned count
; /**< num indices */
223 } translated_indices
;
227 static inline struct svga_buffer
*
228 svga_buffer(struct pipe_resource
*resource
)
230 struct svga_buffer
*buf
= (struct svga_buffer
*) resource
;
231 assert(buf
== NULL
|| buf
->b
.vtbl
== &svga_buffer_vtbl
);
237 * Returns TRUE for user buffers. We may
238 * decide to use an alternate upload path for these buffers.
240 static inline boolean
241 svga_buffer_is_user_buffer(struct pipe_resource
*buffer
)
244 return svga_buffer(buffer
)->user
;
251 * Returns a pointer to a struct svga_winsys_screen given a
252 * struct svga_buffer.
254 static inline struct svga_winsys_screen
*
255 svga_buffer_winsys_screen(struct svga_buffer
*sbuf
)
257 return svga_screen(sbuf
->b
.b
.screen
)->sws
;
262 * Returns whether a buffer has hardware storage that is
263 * visible to the GPU.
265 static inline boolean
266 svga_buffer_has_hw_storage(struct svga_buffer
*sbuf
)
268 if (svga_buffer_winsys_screen(sbuf
)->have_gb_objects
)
269 return (sbuf
->handle
? TRUE
: FALSE
);
271 return (sbuf
->hwbuf
? TRUE
: FALSE
);
275 * Map the hardware storage of a buffer.
276 * \param flags bitmask of PIPE_TRANSFER_* flags
279 svga_buffer_hw_storage_map(struct svga_context
*svga
,
280 struct svga_buffer
*sbuf
,
281 unsigned flags
, boolean
*retry
)
283 struct svga_winsys_screen
*sws
= svga_buffer_winsys_screen(sbuf
);
285 svga
->hud
.num_buffers_mapped
++;
287 if (sws
->have_gb_objects
) {
288 return svga
->swc
->surface_map(svga
->swc
, sbuf
->handle
, flags
, retry
);
291 return sws
->buffer_map(sws
, sbuf
->hwbuf
, flags
);
296 * Unmap the hardware storage of a buffer.
299 svga_buffer_hw_storage_unmap(struct svga_context
*svga
,
300 struct svga_buffer
*sbuf
)
302 struct svga_winsys_screen
*sws
= svga_buffer_winsys_screen(sbuf
);
304 if (sws
->have_gb_objects
) {
305 struct svga_winsys_context
*swc
= svga
->swc
;
307 swc
->surface_unmap(swc
, sbuf
->handle
, &rebind
);
310 ret
= SVGA3D_BindGBSurface(swc
, sbuf
->handle
);
311 if (ret
!= PIPE_OK
) {
312 /* flush and retry */
313 svga_context_flush(svga
, NULL
);
314 ret
= SVGA3D_BindGBSurface(swc
, sbuf
->handle
);
315 assert(ret
== PIPE_OK
);
317 if (swc
->force_coherent
) {
318 ret
= SVGA3D_UpdateGBSurface(swc
, sbuf
->handle
);
319 if (ret
!= PIPE_OK
) {
320 /* flush and retry */
321 svga_context_flush(svga
, NULL
);
322 ret
= SVGA3D_UpdateGBSurface(swc
, sbuf
->handle
);
323 assert(ret
== PIPE_OK
);
328 sws
->buffer_unmap(sws
, sbuf
->hwbuf
);
332 struct pipe_resource
*
333 svga_user_buffer_create(struct pipe_screen
*screen
,
338 struct pipe_resource
*
339 svga_buffer_create(struct pipe_screen
*screen
,
340 const struct pipe_resource
*template);
345 * Get the host surface handle for this buffer.
347 * This will ensure the host surface is updated, issuing DMAs as needed.
349 * NOTE: This may insert new commands in the context, so it *must* be called
350 * before reserving command buffer space. And, in order to insert commands
351 * it may need to call svga_context_flush().
353 struct svga_winsys_surface
*
354 svga_buffer_handle(struct svga_context
*svga
,
355 struct pipe_resource
*buf
,
356 unsigned tobind_flags
);
359 svga_context_flush_buffers(struct svga_context
*svga
);
361 struct svga_winsys_buffer
*
362 svga_winsys_buffer_create(struct svga_context
*svga
,
367 #endif /* SVGA_BUFFER_H */