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Diffstat (limited to 'src/gallium/drivers/r300/r300_screen_buffer.c')
-rw-r--r--src/gallium/drivers/r300/r300_screen_buffer.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_screen_buffer.c b/src/gallium/drivers/r300/r300_screen_buffer.c
new file mode 100644
index 0000000000..3e2b5afe6f
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_screen_buffer.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright 2010 Red Hat Inc.
+ *
+ * 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: Dave Airlie
+ */
+
+#include <stdio.h>
+
+#include "util/u_inlines.h"
+#include "util/u_memory.h"
+#include "util/u_upload_mgr.h"
+#include "util/u_math.h"
+
+#include "r300_screen_buffer.h"
+#include "r300_winsys.h"
+
+unsigned r300_buffer_is_referenced(struct pipe_context *context,
+ struct pipe_resource *buf,
+ enum r300_reference_domain domain)
+{
+ struct r300_context *r300 = r300_context(context);
+ struct r300_buffer *rbuf = r300_buffer(buf);
+
+ if (r300_buffer_is_user_buffer(buf))
+ return PIPE_UNREFERENCED;
+
+ if (r300->rws->is_buffer_referenced(r300->rws, rbuf->buf, domain))
+ return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
+
+ return PIPE_UNREFERENCED;
+}
+
+static unsigned r300_buffer_is_referenced_by_cs(struct pipe_context *context,
+ struct pipe_resource *buf,
+ unsigned face, unsigned level)
+{
+ return r300_buffer_is_referenced(context, buf, R300_REF_CS);
+}
+
+/* External helper, not required to implent u_resource_vtbl:
+ */
+int r300_upload_index_buffer(struct r300_context *r300,
+ struct pipe_resource **index_buffer,
+ unsigned index_size,
+ unsigned start,
+ unsigned count)
+{
+ struct pipe_resource *upload_buffer = NULL;
+ unsigned index_offset = start * index_size;
+ int ret = 0;
+
+ if (r300_buffer_is_user_buffer(*index_buffer)) {
+ ret = u_upload_buffer(r300->upload_ib,
+ index_offset,
+ count * index_size,
+ *index_buffer,
+ &index_offset,
+ &upload_buffer);
+ if (ret) {
+ goto done;
+ }
+ *index_buffer = upload_buffer;
+ }
+ done:
+ // if (upload_buffer)
+ // pipe_resource_reference(&upload_buffer, NULL);
+ return ret;
+}
+
+/* External helper, not required to implement u_resource_vtbl:
+ */
+int r300_upload_user_buffers(struct r300_context *r300)
+{
+ enum pipe_error ret = PIPE_OK;
+ int i, nr;
+
+ nr = r300->vertex_buffer_count;
+
+ for (i = 0; i < nr; i++) {
+ if (r300_buffer_is_user_buffer(r300->vertex_buffer[i].buffer)) {
+ struct pipe_resource *upload_buffer = NULL;
+ unsigned offset = 0; /*r300->vertex_buffer[i].buffer_offset * 4;*/
+ unsigned size = r300->vertex_buffer[i].buffer->width0;
+ unsigned upload_offset;
+ ret = u_upload_buffer(r300->upload_vb,
+ offset, size,
+ r300->vertex_buffer[i].buffer,
+ &upload_offset, &upload_buffer);
+ if (ret)
+ return ret;
+
+ pipe_resource_reference(&r300->vertex_buffer[i].buffer, NULL);
+ r300->vertex_buffer[i].buffer = upload_buffer;
+ r300->vertex_buffer[i].buffer_offset = upload_offset;
+ }
+ }
+ return ret;
+}
+
+static struct r300_winsys_buffer *
+r300_winsys_buffer_create(struct r300_screen *r300screen,
+ unsigned alignment,
+ unsigned usage,
+ unsigned size)
+{
+ struct r300_winsys_screen *rws = r300screen->rws;
+ struct r300_winsys_buffer *buf;
+
+ buf = rws->buffer_create(rws, alignment, usage, size);
+ return buf;
+}
+
+static void r300_winsys_buffer_destroy(struct r300_screen *r300screen,
+ struct r300_buffer *rbuf)
+{
+ struct r300_winsys_screen *rws = r300screen->rws;
+
+ if (rbuf->buf) {
+ rws->buffer_reference(rws, &rbuf->buf, NULL);
+ rbuf->buf = NULL;
+ }
+}
+
+static void r300_buffer_destroy(struct pipe_screen *screen,
+ struct pipe_resource *buf)
+{
+ struct r300_screen *r300screen = r300_screen(screen);
+ struct r300_buffer *rbuf = r300_buffer(buf);
+
+ r300_winsys_buffer_destroy(r300screen, rbuf);
+ FREE(rbuf);
+}
+
+static void *
+r300_buffer_transfer_map( struct pipe_context *pipe,
+ struct pipe_transfer *transfer )
+{
+ struct r300_screen *r300screen = r300_screen(pipe->screen);
+ struct r300_winsys_screen *rws = r300screen->rws;
+ struct r300_buffer *rbuf = r300_buffer(transfer->resource);
+ uint8_t *map;
+ boolean flush = FALSE;
+ unsigned i;
+
+ if (rbuf->user_buffer)
+ return (uint8_t *) rbuf->user_buffer + transfer->box.x;
+
+ if (rbuf->b.b.bind & PIPE_BIND_CONSTANT_BUFFER) {
+ goto just_map;
+ }
+
+ /* check if the mapping is to a range we already flushed */
+ if (transfer->usage & PIPE_TRANSFER_DISCARD) {
+ for (i = 0; i < rbuf->num_ranges; i++) {
+ if ((transfer->box.x >= rbuf->ranges[i].start) &&
+ (transfer->box.x < rbuf->ranges[i].end))
+ flush = TRUE;
+
+ if (flush) {
+ /* unreference this hw buffer and allocate a new one */
+ rws->buffer_reference(rws, &rbuf->buf, NULL);
+
+ rbuf->num_ranges = 0;
+ rbuf->buf = r300_winsys_buffer_create(r300screen,
+ 16,
+ rbuf->b.b.bind, /* XXX */
+ rbuf->b.b.width0);
+ break;
+ }
+ }
+ }
+just_map:
+ map = rws->buffer_map(rws, rbuf->buf, transfer->usage);
+
+ if (map == NULL)
+ return NULL;
+
+ /* map_buffer() returned a pointer to the beginning of the buffer,
+ * but transfers are expected to return a pointer to just the
+ * region specified in the box.
+ */
+ return map + transfer->box.x;
+}
+
+static void r300_buffer_transfer_flush_region( struct pipe_context *pipe,
+ struct pipe_transfer *transfer,
+ const struct pipe_box *box)
+{
+ struct r300_buffer *rbuf = r300_buffer(transfer->resource);
+ unsigned i;
+ unsigned offset = transfer->box.x + box->x;
+ unsigned length = box->width;
+
+ assert(box->x + box->width <= transfer->box.width);
+
+ if (rbuf->user_buffer)
+ return;
+
+ if (rbuf->b.b.bind & PIPE_BIND_CONSTANT_BUFFER)
+ return;
+
+ /* mark the range as used */
+ for(i = 0; i < rbuf->num_ranges; ++i) {
+ if(offset <= rbuf->ranges[i].end && rbuf->ranges[i].start <= (offset+box->width)) {
+ rbuf->ranges[i].start = MIN2(rbuf->ranges[i].start, offset);
+ rbuf->ranges[i].end = MAX2(rbuf->ranges[i].end, (offset+length));
+ return;
+ }
+ }
+
+ rbuf->ranges[rbuf->num_ranges].start = offset;
+ rbuf->ranges[rbuf->num_ranges].end = offset+length;
+ rbuf->num_ranges++;
+}
+
+static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
+ struct pipe_transfer *transfer )
+{
+ struct r300_screen *r300screen = r300_screen(pipe->screen);
+ struct r300_winsys_screen *rws = r300screen->rws;
+ struct r300_buffer *rbuf = r300_buffer(transfer->resource);
+
+ if (rbuf->buf) {
+ rws->buffer_unmap(rws, rbuf->buf);
+ }
+}
+
+struct u_resource_vtbl r300_buffer_vtbl =
+{
+ u_default_resource_get_handle, /* get_handle */
+ r300_buffer_destroy, /* resource_destroy */
+ r300_buffer_is_referenced_by_cs, /* is_buffer_referenced */
+ u_default_get_transfer, /* get_transfer */
+ u_default_transfer_destroy, /* transfer_destroy */
+ r300_buffer_transfer_map, /* transfer_map */
+ r300_buffer_transfer_flush_region, /* transfer_flush_region */
+ r300_buffer_transfer_unmap, /* transfer_unmap */
+ u_default_transfer_inline_write /* transfer_inline_write */
+};
+
+struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
+ const struct pipe_resource *templ)
+{
+ struct r300_screen *r300screen = r300_screen(screen);
+ struct r300_buffer *rbuf;
+ unsigned alignment = 16;
+
+ rbuf = CALLOC_STRUCT(r300_buffer);
+ if (!rbuf)
+ goto error1;
+
+ rbuf->magic = R300_BUFFER_MAGIC;
+
+ rbuf->b.b = *templ;
+ rbuf->b.vtbl = &r300_buffer_vtbl;
+ pipe_reference_init(&rbuf->b.b.reference, 1);
+ rbuf->b.b.screen = screen;
+
+ if (rbuf->b.b.bind & R300_BIND_OQBO)
+ alignment = 4096;
+
+ rbuf->buf = r300_winsys_buffer_create(r300screen,
+ alignment,
+ rbuf->b.b.bind,
+ rbuf->b.b.width0);
+
+ if (!rbuf->buf)
+ goto error2;
+
+ return &rbuf->b.b;
+error2:
+ FREE(rbuf);
+error1:
+ return NULL;
+}
+
+struct pipe_resource *r300_user_buffer_create(struct pipe_screen *screen,
+ void *ptr,
+ unsigned bytes,
+ unsigned bind)
+{
+ struct r300_buffer *rbuf;
+
+ rbuf = CALLOC_STRUCT(r300_buffer);
+ if (!rbuf)
+ goto no_rbuf;
+
+ rbuf->magic = R300_BUFFER_MAGIC;
+
+ pipe_reference_init(&rbuf->b.b.reference, 1);
+ rbuf->b.vtbl = &r300_buffer_vtbl;
+ rbuf->b.b.screen = screen;
+ rbuf->b.b.format = PIPE_FORMAT_R8_UNORM;
+ rbuf->b.b.usage = PIPE_USAGE_IMMUTABLE;
+ rbuf->b.b.bind = bind;
+ rbuf->b.b.width0 = bytes;
+ rbuf->b.b.height0 = 1;
+ rbuf->b.b.depth0 = 1;
+
+ rbuf->user_buffer = ptr;
+ return &rbuf->b.b;
+
+no_rbuf:
+ return NULL;
+}
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