--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/* Helper utility for uploading user buffers & other data, and
+ * coalescing small buffers into larger ones.
+ */
+
+#include "pipe/p_error.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+
+#include "u_upload_mgr.h"
+
+
+struct u_upload_mgr {
+ struct pipe_screen *screen;
+
+ unsigned default_size;
+ unsigned alignment;
+ unsigned usage;
+
+ /* The active buffer:
+ */
+ struct pipe_buffer *buffer;
+ unsigned size;
+ unsigned offset;
+};
+
+
+struct u_upload_mgr *u_upload_create( struct pipe_screen *screen,
+ unsigned default_size,
+ unsigned alignment,
+ unsigned usage )
+{
+ struct u_upload_mgr *upload = CALLOC_STRUCT( u_upload_mgr );
+
+ upload->default_size = default_size;
+ upload->screen = screen;
+ upload->alignment = alignment;
+ upload->usage = usage;
+ upload->buffer = NULL;
+
+ return upload;
+}
+
+
+static INLINE void
+my_buffer_write(struct pipe_screen *screen,
+ struct pipe_buffer *buf,
+ unsigned offset, unsigned size, unsigned dirty_size,
+ const void *data)
+{
+ uint8_t *map;
+
+ assert(offset < buf->size);
+ assert(offset + size <= buf->size);
+ assert(dirty_size >= size);
+ assert(size);
+
+ map = pipe_buffer_map_range(screen, buf, offset, size, PIPE_BUFFER_USAGE_CPU_WRITE);
+ assert(map);
+ if(map) {
+ memcpy(map + offset, data, size);
+ pipe_buffer_flush_mapped_range(screen, buf, offset, dirty_size);
+ pipe_buffer_unmap(screen, buf);
+ }
+}
+
+/* Release old buffer.
+ *
+ * This must usually be called prior to firing the command stream
+ * which references the upload buffer, as many memory managers will
+ * cause subsequent maps of a fired buffer to wait.
+ *
+ * Can improve this with a change to pipe_buffer_write to use the
+ * DONT_WAIT bit, but for now, it's easiest just to grab a new buffer.
+ */
+void u_upload_flush( struct u_upload_mgr *upload )
+{
+ pipe_buffer_reference( &upload->buffer, NULL );
+ upload->size = 0;
+}
+
+
+void u_upload_destroy( struct u_upload_mgr *upload )
+{
+ u_upload_flush( upload );
+ FREE( upload );
+}
+
+
+static enum pipe_error
+u_upload_alloc_buffer( struct u_upload_mgr *upload,
+ unsigned min_size )
+{
+ /* Release old buffer, if present:
+ */
+ u_upload_flush( upload );
+
+ /* Allocate a new one:
+ */
+ upload->size = align(MAX2(upload->default_size, min_size), 4096);
+
+ upload->buffer = pipe_buffer_create( upload->screen,
+ upload->alignment,
+ upload->usage | PIPE_BUFFER_USAGE_CPU_WRITE,
+ upload->size );
+ if (upload->buffer == NULL)
+ goto fail;
+
+ upload->offset = 0;
+ return 0;
+
+fail:
+ if (upload->buffer)
+ pipe_buffer_reference( &upload->buffer, NULL );
+
+ return PIPE_ERROR_OUT_OF_MEMORY;
+}
+
+
+enum pipe_error u_upload_data( struct u_upload_mgr *upload,
+ unsigned size,
+ const void *data,
+ unsigned *out_offset,
+ struct pipe_buffer **outbuf )
+{
+ unsigned alloc_size = align( size, upload->alignment );
+ enum pipe_error ret = PIPE_OK;
+
+ if (upload->offset + alloc_size > upload->size) {
+ ret = u_upload_alloc_buffer( upload, alloc_size );
+ if (ret)
+ return ret;
+ }
+
+ /* Copy the data, using map_range if available:
+ */
+ my_buffer_write( upload->screen,
+ upload->buffer,
+ upload->offset,
+ size,
+ alloc_size,
+ data );
+
+ /* Emit the return values:
+ */
+ pipe_buffer_reference( outbuf, upload->buffer );
+ *out_offset = upload->offset;
+ upload->offset += alloc_size;
+ return PIPE_OK;
+}
+
+
+/* As above, but upload the full contents of a buffer. Useful for
+ * uploading user buffers, avoids generating an explosion of GPU
+ * buffers if you have an app that does lots of small vertex buffer
+ * renders or DrawElements calls.
+ */
+enum pipe_error u_upload_buffer( struct u_upload_mgr *upload,
+ unsigned offset,
+ unsigned size,
+ struct pipe_buffer *inbuf,
+ unsigned *out_offset,
+ struct pipe_buffer **outbuf )
+{
+ enum pipe_error ret = PIPE_OK;
+ const char *map = NULL;
+
+ map = (const char *)pipe_buffer_map(
+ upload->screen, inbuf, PIPE_BUFFER_USAGE_CPU_READ );
+
+ if (map == NULL) {
+ ret = PIPE_ERROR_OUT_OF_MEMORY;
+ goto done;
+ }
+
+ if (0)
+ debug_printf("upload ptr %p ofs %d sz %d\n", map, offset, size);
+
+ ret = u_upload_data( upload,
+ size,
+ map + offset,
+ out_offset,
+ outbuf );
+ if (ret)
+ goto done;
+
+done:
+ if (map)
+ pipe_buffer_unmap( upload->screen, inbuf );
+
+ return ret;
+}
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/* Helper utility for uploading user buffers & other data, and
+ * coalescing small buffers into larger ones.
+ */
+
+#ifndef U_UPLOAD_MGR_H
+#define U_UPLOAD_MGR_H
+
+struct pipe_screen;
+struct pipe_buffer;
+struct u_upload_mgr;
+
+
+struct u_upload_mgr *u_upload_create( struct pipe_screen *screen,
+ unsigned default_size,
+ unsigned alignment,
+ unsigned usage );
+
+void u_upload_destroy( struct u_upload_mgr *upload );
+
+/* Unmap and release old buffer.
+ *
+ * This must usually be called prior to firing the command stream
+ * which references the upload buffer, as many memory managers either
+ * don't like firing a mapped buffer or cause subsequent maps of a
+ * fired buffer to wait. For now, it's easiest just to grab a new
+ * buffer.
+ */
+void u_upload_flush( struct u_upload_mgr *upload );
+
+
+enum pipe_error u_upload_data( struct u_upload_mgr *upload,
+ unsigned size,
+ const void *data,
+ unsigned *out_offset,
+ struct pipe_buffer **outbuf );
+
+
+enum pipe_error u_upload_buffer( struct u_upload_mgr *upload,
+ unsigned offset,
+ unsigned size,
+ struct pipe_buffer *inbuf,
+ unsigned *out_offset,
+ struct pipe_buffer **outbuf );
+
+
+
+#endif
+
projects / mesa.git / commitdiff