diff options
Diffstat (limited to 'src/gallium/drivers/r600/r600_upload.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_upload.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_upload.c b/src/gallium/drivers/r600/r600_upload.c new file mode 100644 index 00000000000..bea0fd4f0c5 --- /dev/null +++ b/src/gallium/drivers/r600/r600_upload.c @@ -0,0 +1,112 @@ +/* + * Copyright 2010 Jerome Glisse <glisse@freedesktop.org> + * + * 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 + * on 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 + * THE AUTHOR(S) AND/OR THEIR 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. + * + * Authors: + * Jerome Glisse <jglisse@redhat.com> + */ +#include <errno.h> +#include "util/u_inlines.h" +#include "util/u_memory.h" +#include "r600.h" +#include "r600_pipe.h" +#include "r600_resource.h" + +struct r600_upload { + struct r600_pipe_context *rctx; + struct r600_bo *buffer; + char *ptr; + unsigned size; + unsigned default_size; + unsigned total_alloc_size; + unsigned offset; + unsigned alignment; +}; + +struct r600_upload *r600_upload_create(struct r600_pipe_context *rctx, + unsigned default_size, + unsigned alignment) +{ + struct r600_upload *upload = CALLOC_STRUCT(r600_upload); + + if (upload == NULL) + return NULL; + + upload->rctx = rctx; + upload->size = 0; + upload->default_size = default_size; + upload->alignment = alignment; + upload->ptr = NULL; + upload->buffer = NULL; + upload->total_alloc_size = 0; + + return upload; +} + +void r600_upload_flush(struct r600_upload *upload) +{ + if (upload->buffer) { + r600_bo_reference(upload->rctx->radeon, &upload->buffer, NULL); + } + upload->default_size = MAX2(upload->total_alloc_size, upload->default_size); + upload->total_alloc_size = 0; + upload->size = 0; + upload->ptr = NULL; + upload->buffer = NULL; +} + +void r600_upload_destroy(struct r600_upload *upload) +{ + r600_upload_flush(upload); + FREE(upload); +} + +int r600_upload_buffer(struct r600_upload *upload, unsigned offset, + unsigned size, struct r600_resource_buffer *in_buffer, + unsigned *out_offset, unsigned *out_size, + struct r600_bo **out_buffer) +{ + unsigned alloc_size = align(size, upload->alignment); + const void *in_ptr = NULL; + + if (upload->offset + alloc_size > upload->size) { + if (upload->size) { + r600_bo_reference(upload->rctx->radeon, &upload->buffer, NULL); + } + upload->size = align(MAX2(upload->default_size, alloc_size), 4096); + upload->total_alloc_size += upload->size; + upload->offset = 0; + upload->buffer = r600_bo(upload->rctx->radeon, upload->size, 4096, PIPE_BIND_VERTEX_BUFFER, 0); + if (upload->buffer == NULL) { + return -ENOMEM; + } + upload->ptr = r600_bo_map(upload->rctx->radeon, upload->buffer, 0, NULL); + } + + in_ptr = in_buffer->user_buffer; + memcpy(upload->ptr + upload->offset, in_ptr + offset, size); + *out_offset = upload->offset; + *out_size = upload->size; + *out_buffer = upload->buffer; + upload->offset += alloc_size; + + return 0; +} |