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 "util/u_double_list.h"
36 #include "svga_screen_cache.h"
40 * Maximum number of discontiguous ranges
42 #define SVGA_BUFFER_MAX_RANGES 32
46 struct svga_winsys_buffer
;
47 struct svga_winsys_surface
;
50 extern struct u_resource_vtbl svga_buffer_vtbl
;
52 struct svga_buffer_range
67 * Regular (non DMA'able) memory.
69 * Used for user buffers or for buffers which we know before hand that can
70 * never be used by the virtual hardware directly, such as constant buffers.
75 * Whether swbuf was created by the user or not.
80 * Creation key for the host surface handle.
82 * This structure describes all the host surface characteristics so that it
83 * can be looked up in cache, since creating a host surface is often a slow
86 struct svga_host_surface_cache_key key
;
89 * Host surface handle.
91 * This is a platform independent abstraction for host SID. We create when
94 * Only set for non-user buffers.
96 struct svga_winsys_surface
*handle
;
99 * Information about ongoing and past map operations.
103 * Number of concurrent mappings.
110 * Ranges that were touched by the application and need to be uploaded to
113 * This information will be copied into dma.boxes, when emiting the
114 * SVGA3dCmdSurfaceDMA command.
116 struct svga_buffer_range ranges
[SVGA_BUFFER_MAX_RANGES
];
121 * Information about uploaded version of user buffers.
124 struct pipe_resource
*buffer
;
127 * We combine multiple user buffers into the same hardware buffer. This
128 * is the relative offset within that buffer.
133 * Range of user buffer that is uploaded in @buffer at @offset.
142 * A piece of GMR memory, with the same size of the buffer. It is created
143 * when mapping the buffer, and will be used to upload vertex data to the
146 * Only set for non-user buffers.
148 struct svga_winsys_buffer
*hwbuf
;
151 * Information about pending DMA uploads.
156 * Whether this buffer has an unfinished DMA upload command.
158 * If not set then the rest of the information is null.
162 SVGA3dSurfaceDMAFlags flags
;
165 * Pointer to the DMA copy box *inside* the command buffer.
167 SVGA3dCopyBox
*boxes
;
170 * Context that has the pending DMA to this buffer.
172 struct svga_context
*svga
;
176 * Linked list head, used to gather all buffers with pending dma uploads on
177 * a context. It is only valid if the dma.pending is set above.
179 struct list_head head
;
181 unsigned size
; /**< Approximate size in bytes */
185 static INLINE
struct svga_buffer
*
186 svga_buffer(struct pipe_resource
*buffer
)
189 assert(((struct svga_buffer
*)buffer
)->b
.vtbl
== &svga_buffer_vtbl
);
190 return (struct svga_buffer
*)buffer
;
197 * Returns TRUE for user buffers. We may
198 * decide to use an alternate upload path for these buffers.
200 static INLINE boolean
201 svga_buffer_is_user_buffer( struct pipe_resource
*buffer
)
204 return svga_buffer(buffer
)->user
;
213 struct pipe_resource
*
214 svga_user_buffer_create(struct pipe_screen
*screen
,
219 struct pipe_resource
*
220 svga_buffer_create(struct pipe_screen
*screen
,
221 const struct pipe_resource
*template);
226 * Get the host surface handle for this buffer.
228 * This will ensure the host surface is updated, issuing DMAs as needed.
230 * NOTE: This may insert new commands in the context, so it *must* be called
231 * before reserving command buffer space. And, in order to insert commands
232 * it may need to call svga_context_flush().
234 struct svga_winsys_surface
*
235 svga_buffer_handle(struct svga_context
*svga
,
236 struct pipe_resource
*buf
);
239 svga_context_flush_buffers(struct svga_context
*svga
);
241 struct svga_winsys_buffer
*
242 svga_winsys_buffer_create(struct svga_context
*svga
,
247 #endif /* SVGA_BUFFER_H */