r600g: specialized upload manager

Allow important performance increase by doing hw specific implementation
of the upload manager helper. Drop the range flushing that is not hit with
this code (and wasn't with previous neither). Performance improvement are
mostly visible on slow CPU.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

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 0000000000..bea0fd4f0c
--- /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;
+}