1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * A variation of malloc buffers which get transferred to real graphics memory
31 * when there is an attempt to validate them.
33 * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
37 #include "util/u_debug.h"
38 #include "util/u_memory.h"
39 #include "pb_buffer.h"
40 #include "pb_bufmgr.h"
43 struct pb_ondemand_manager;
46 struct pb_ondemand_buffer
48 struct pb_buffer base;
50 struct pb_ondemand_manager *mgr;
52 /** Regular malloc'ed memory */
57 struct pb_buffer *buffer;
63 struct pb_ondemand_manager
65 struct pb_manager base;
67 struct pb_manager *provider;
71 extern const struct pb_vtbl pb_ondemand_buffer_vtbl;
73 static INLINE struct pb_ondemand_buffer *
74 pb_ondemand_buffer(struct pb_buffer *buf)
79 assert(buf->vtbl == &pb_ondemand_buffer_vtbl);
80 return (struct pb_ondemand_buffer *)buf;
83 static INLINE struct pb_ondemand_manager *
84 pb_ondemand_manager(struct pb_manager *mgr)
87 return (struct pb_ondemand_manager *)mgr;
92 pb_ondemand_buffer_destroy(struct pb_buffer *_buf)
94 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
96 pb_reference(&buf->buffer, NULL);
98 align_free(buf->data);
105 pb_ondemand_buffer_map(struct pb_buffer *_buf,
106 unsigned flags, void *flush_ctx)
108 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
112 return pb_map(buf->buffer, flags, flush_ctx);
123 pb_ondemand_buffer_unmap(struct pb_buffer *_buf)
125 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
129 pb_unmap(buf->buffer);
133 assert(buf->mapcount);
140 static enum pipe_error
141 pb_ondemand_buffer_instantiate(struct pb_ondemand_buffer *buf)
144 struct pb_manager *provider = buf->mgr->provider;
147 assert(!buf->mapcount);
149 buf->buffer = provider->create_buffer(provider, buf->size, &buf->desc);
151 return PIPE_ERROR_OUT_OF_MEMORY;
153 map = pb_map(buf->buffer, PB_USAGE_CPU_READ, NULL);
155 pb_reference(&buf->buffer, NULL);
159 memcpy(map, buf->data, buf->size);
161 pb_unmap(buf->buffer);
172 static enum pipe_error
173 pb_ondemand_buffer_validate(struct pb_buffer *_buf,
174 struct pb_validate *vl,
177 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
180 assert(!buf->mapcount);
184 ret = pb_ondemand_buffer_instantiate(buf);
188 return pb_validate(buf->buffer, vl, flags);
193 pb_ondemand_buffer_fence(struct pb_buffer *_buf,
194 struct pipe_fence_handle *fence)
196 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
202 pb_fence(buf->buffer, fence);
207 pb_ondemand_buffer_get_base_buffer(struct pb_buffer *_buf,
208 struct pb_buffer **base_buf,
211 struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
213 if(pb_ondemand_buffer_instantiate(buf) != PIPE_OK) {
215 *base_buf = &buf->base;
220 pb_get_base_buffer(buf->buffer, base_buf, offset);
225 pb_ondemand_buffer_vtbl = {
226 pb_ondemand_buffer_destroy,
227 pb_ondemand_buffer_map,
228 pb_ondemand_buffer_unmap,
229 pb_ondemand_buffer_validate,
230 pb_ondemand_buffer_fence,
231 pb_ondemand_buffer_get_base_buffer
235 static struct pb_buffer *
236 pb_ondemand_manager_create_buffer(struct pb_manager *_mgr,
238 const struct pb_desc *desc)
240 struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
241 struct pb_ondemand_buffer *buf;
243 buf = CALLOC_STRUCT(pb_ondemand_buffer);
247 pipe_reference_init(&buf->base.base.reference, 1);
248 buf->base.base.alignment = desc->alignment;
249 buf->base.base.usage = desc->usage;
250 buf->base.base.size = size;
251 buf->base.vtbl = &pb_ondemand_buffer_vtbl;
255 buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment);
269 pb_ondemand_manager_flush(struct pb_manager *_mgr)
271 struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
273 mgr->provider->flush(mgr->provider);
278 pb_ondemand_manager_destroy(struct pb_manager *_mgr)
280 struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
287 pb_ondemand_manager_create(struct pb_manager *provider)
289 struct pb_ondemand_manager *mgr;
294 mgr = CALLOC_STRUCT(pb_ondemand_manager);
298 mgr->base.destroy = pb_ondemand_manager_destroy;
299 mgr->base.create_buffer = pb_ondemand_manager_create_buffer;
300 mgr->base.flush = pb_ondemand_manager_flush;
302 mgr->provider = provider;