diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_index_modify.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_index_modify.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_index_modify.c b/mesalib/src/gallium/auxiliary/util/u_index_modify.c new file mode 100644 index 000000000..38e9b3700 --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_index_modify.c @@ -0,0 +1,182 @@ +/*
+ * Copyright 2010 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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. */
+
+#include "pipe/p_context.h"
+#include "util/u_index_modify.h"
+#include "util/u_inlines.h"
+
+/* Ubyte indices. */
+
+void util_shorten_ubyte_elts_to_userptr(struct pipe_context *context,
+ struct pipe_resource *elts,
+ int index_bias,
+ unsigned start,
+ unsigned count,
+ void *out)
+{
+ struct pipe_transfer *src_transfer;
+ unsigned char *in_map;
+ unsigned short *out_map = out;
+ unsigned i;
+
+ in_map = pipe_buffer_map(context, elts,
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED,
+ &src_transfer);
+ in_map += start;
+
+ for (i = 0; i < count; i++) {
+ *out_map = (unsigned short)(*in_map + index_bias);
+ in_map++;
+ out_map++;
+ }
+
+ pipe_buffer_unmap(context, src_transfer);
+}
+
+void util_shorten_ubyte_elts(struct pipe_context *context,
+ struct pipe_resource **elts,
+ int index_bias,
+ unsigned start,
+ unsigned count)
+{
+ struct pipe_resource* new_elts;
+ unsigned short *out_map;
+ struct pipe_transfer *dst_transfer;
+
+ new_elts = pipe_buffer_create(context->screen,
+ PIPE_BIND_INDEX_BUFFER,
+ PIPE_USAGE_STATIC,
+ 2 * count);
+
+ out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE,
+ &dst_transfer);
+ util_shorten_ubyte_elts_to_userptr(context, *elts, index_bias,
+ start, count, out_map);
+ pipe_buffer_unmap(context, dst_transfer);
+
+ *elts = new_elts;
+}
+
+
+/* Ushort indices. */
+
+void util_rebuild_ushort_elts_to_userptr(struct pipe_context *context,
+ struct pipe_resource *elts,
+ int index_bias,
+ unsigned start, unsigned count,
+ void *out)
+{
+ struct pipe_transfer *in_transfer = NULL;
+ unsigned short *in_map;
+ unsigned short *out_map = out;
+ unsigned i;
+
+ in_map = pipe_buffer_map(context, elts,
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED,
+ &in_transfer);
+ in_map += start;
+
+ for (i = 0; i < count; i++) {
+ *out_map = (unsigned short)(*in_map + index_bias);
+ in_map++;
+ out_map++;
+ }
+
+ pipe_buffer_unmap(context, in_transfer);
+}
+
+void util_rebuild_ushort_elts(struct pipe_context *context,
+ struct pipe_resource **elts,
+ int index_bias,
+ unsigned start, unsigned count)
+{
+ struct pipe_transfer *out_transfer = NULL;
+ struct pipe_resource *new_elts;
+ unsigned short *out_map;
+
+ new_elts = pipe_buffer_create(context->screen,
+ PIPE_BIND_INDEX_BUFFER,
+ PIPE_USAGE_STATIC,
+ 2 * count);
+
+ out_map = pipe_buffer_map(context, new_elts,
+ PIPE_TRANSFER_WRITE, &out_transfer);
+ util_rebuild_ushort_elts_to_userptr(context, *elts, index_bias,
+ start, count, out_map);
+ pipe_buffer_unmap(context, out_transfer);
+
+ *elts = new_elts;
+}
+
+
+/* Uint indices. */
+
+void util_rebuild_uint_elts_to_userptr(struct pipe_context *context,
+ struct pipe_resource *elts,
+ int index_bias,
+ unsigned start, unsigned count,
+ void *out)
+{
+ struct pipe_transfer *in_transfer = NULL;
+ unsigned int *in_map;
+ unsigned int *out_map = out;
+ unsigned i;
+
+ in_map = pipe_buffer_map(context, elts,
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED,
+ &in_transfer);
+ in_map += start;
+
+ for (i = 0; i < count; i++) {
+ *out_map = (unsigned int)(*in_map + index_bias);
+ in_map++;
+ out_map++;
+ }
+
+ pipe_buffer_unmap(context, in_transfer);
+}
+
+void util_rebuild_uint_elts(struct pipe_context *context,
+ struct pipe_resource **elts,
+ int index_bias,
+ unsigned start, unsigned count)
+{
+ struct pipe_transfer *out_transfer = NULL;
+ struct pipe_resource *new_elts;
+ unsigned int *out_map;
+
+ new_elts = pipe_buffer_create(context->screen,
+ PIPE_BIND_INDEX_BUFFER,
+ PIPE_USAGE_STATIC,
+ 2 * count);
+
+ out_map = pipe_buffer_map(context, new_elts,
+ PIPE_TRANSFER_WRITE, &out_transfer);
+ util_rebuild_uint_elts_to_userptr(context, *elts, index_bias,
+ start, count, out_map);
+ pipe_buffer_unmap(context, out_transfer);
+
+ *elts = new_elts;
+}
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