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
47 struct svga_winsys_buffer;
48 struct svga_winsys_surface;
51 extern struct u_resource_vtbl svga_buffer_vtbl;
53 struct svga_buffer_range
68 * Regular (non DMA'able) memory.
70 * Used for user buffers or for buffers which we know before hand that can
71 * never be used by the virtual hardware directly, such as constant buffers.
76 * Whether swbuf was created by the user or not.
81 * Creation key for the host surface handle.
83 * This structure describes all the host surface characteristics so that it
84 * can be looked up in cache, since creating a host surface is often a slow
87 struct svga_host_surface_cache_key key;
90 * Host surface handle.
92 * This is a platform independent abstraction for host SID. We create when
95 struct svga_winsys_surface *handle;
98 * Information about ongoing and past map operations.
102 * Number of concurrent mappings.
104 * XXX: It is impossible to guarantee concurrent maps work in all
105 * circumstances -- pipe_buffers really need transfer objects too.
110 * Whether this buffer is currently mapped for writing.
115 * Whether the application will tell us explicity which ranges it touched
118 boolean flush_explicit;
123 * Ranges that were touched by the application and need to be uploaded to
126 * This information will be copied into dma.boxes, when emiting the
127 * SVGA3dCmdSurfaceDMA command.
129 struct svga_buffer_range ranges[SVGA_BUFFER_MAX_RANGES];
134 * Information about uploaded version of user buffers.
137 struct pipe_resource *buffer;
140 * We combine multiple user buffers into the same hardware buffer. This
141 * is the relative offset within that buffer.
149 * A piece of GMR memory, with the same size of the buffer. It is created
150 * when mapping the buffer, and will be used to upload vertex data to the
153 struct svga_winsys_buffer *hwbuf;
156 * Information about pending DMA uploads.
161 * Whether this buffer has an unfinished DMA upload command.
163 * If not set then the rest of the information is null.
167 SVGA3dSurfaceDMAFlags flags;
170 * Pointer to the DMA copy box *inside* the command buffer.
172 SVGA3dCopyBox *boxes;
175 * Context that has the pending DMA to this buffer.
177 struct svga_context *svga;
181 * Linked list head, used to gather all buffers with pending dma uploads on
182 * a context. It is only valid if the dma.pending is set above.
184 struct list_head head;
188 static INLINE struct svga_buffer *
189 svga_buffer(struct pipe_resource *buffer)
192 assert(((struct svga_buffer *)buffer)->b.vtbl == &svga_buffer_vtbl);
193 return (struct svga_buffer *)buffer;
200 * Returns TRUE for user buffers. We may
201 * decide to use an alternate upload path for these buffers.
203 static INLINE boolean
204 svga_buffer_is_user_buffer( struct pipe_resource *buffer )
206 return svga_buffer(buffer)->user;
212 struct pipe_resource *
213 svga_user_buffer_create(struct pipe_screen *screen,
218 struct pipe_resource *
219 svga_buffer_create(struct pipe_screen *screen,
220 const struct pipe_resource *template);
225 * Get the host surface handle for this buffer.
227 * This will ensure the host surface is updated, issuing DMAs as needed.
229 * NOTE: This may insert new commands in the context, so it *must* be called
230 * before reserving command buffer space. And, in order to insert commands
231 * it may need to call svga_context_flush().
233 struct svga_winsys_surface *
234 svga_buffer_handle(struct svga_context *svga,
235 struct pipe_resource *buf);
238 svga_context_flush_buffers(struct svga_context *svga);
240 struct svga_winsys_buffer *
241 svga_winsys_buffer_create(struct svga_screen *ss,
246 #endif /* SVGA_BUFFER_H */