r300g: rebuild screen/winsys interface

This creates a cleaner winsys and drop the simple screen stuff.

It makes r300g use pb_bufmgr structs.

It also tries to avoid overheads from mapping too often.

v5: clean warnings

v6: break out of cache check on first buffer - since most likely
the first busy one implies all after it are busy.

v7: cleanup a bit

v8-merged: drop cman for now to just get all the interface changes in first.
rework to changes that happened upstream

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 314 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..b97d0d76a4
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_screen_buffer.c
@@ -0,0 +1,314 @@
+/*
+ * 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_format.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"
+
+boolean r300_buffer_is_referenced(struct r300_context *r300,
+				  struct pipe_buffer *buf)
+{
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    if (r300_buffer_is_user_buffer(buf))
+	return FALSE;
+
+    return r300->rws->is_buffer_referenced(r300->rws, rbuf->buf);
+    
+}
+int r300_upload_index_buffer(struct r300_context *r300,
+			     struct pipe_buffer **index_buffer,
+			     unsigned index_size,
+			     unsigned start,
+			     unsigned count)
+{
+   struct pipe_buffer *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_buffer_reference(&upload_buffer, NULL);
+    return ret;
+}
+
+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_buffer *upload_buffer = NULL;
+	    unsigned offset = 0; /*r300->vertex_buffer[i].buffer_offset * 4;*/
+	    unsigned size = r300->vertex_buffer[i].buffer->size;
+	    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_buffer_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 struct pipe_buffer *r300_buffer_create(struct pipe_screen *screen,
+					      unsigned alignment,
+					      unsigned usage,
+					      unsigned size)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_buffer *rbuf;
+
+    rbuf = CALLOC_STRUCT(r300_buffer);
+    if (!rbuf)
+	goto error1;
+
+    rbuf->magic = R300_BUFFER_MAGIC;
+
+    pipe_reference_init(&rbuf->base.reference, 1);
+    rbuf->base.screen = screen;
+    rbuf->base.alignment = alignment;
+    rbuf->base.usage = usage;
+    rbuf->base.size = size;
+
+    rbuf->buf = r300_winsys_buffer_create(r300screen,
+					  alignment,
+					  usage,
+					  size);
+
+    if (!rbuf->buf)
+	goto error2;
+
+    return &rbuf->base;
+error2:
+    FREE(rbuf);
+error1:
+    return NULL;
+}
+
+
+static struct pipe_buffer *r300_user_buffer_create(struct pipe_screen *screen,
+						   void *ptr,
+						   unsigned bytes)
+{
+    struct r300_buffer *rbuf;
+
+    rbuf = CALLOC_STRUCT(r300_buffer);
+    if (!rbuf)
+	goto no_rbuf;
+
+    rbuf->magic = R300_BUFFER_MAGIC;
+
+    pipe_reference_init(&rbuf->base.reference, 1);
+    rbuf->base.screen = screen;
+    rbuf->base.alignment = 1;
+    rbuf->base.usage = 0;
+    rbuf->base.size = bytes;
+
+    rbuf->user_buffer = ptr;
+    return &rbuf->base;
+
+no_rbuf:
+    return NULL;
+}
+
+static void r300_buffer_destroy(struct pipe_buffer *buf)
+{
+    struct r300_screen *r300screen = r300_screen(buf->screen);
+    struct r300_buffer *rbuf = r300_buffer(buf);
+
+    r300_winsys_buffer_destroy(r300screen, rbuf);
+    FREE(rbuf);
+}
+
+static void *
+r300_buffer_map_range(struct pipe_screen *screen,
+		      struct pipe_buffer *buf,
+		      unsigned offset, unsigned length,
+		      unsigned usage )
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    void *map;
+    int flush = 0;
+    int i;
+
+    if (rbuf->user_buffer)
+	return rbuf->user_buffer;
+
+    if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
+	goto just_map;
+
+    /* check if the mapping is to a range we already flushed */
+    if (usage & PIPE_BUFFER_USAGE_DISCARD) {
+	for (i = 0; i < rbuf->num_ranges; i++) {
+
+	    if ((offset >= rbuf->ranges[i].start) &&
+		(offset < rbuf->ranges[i].end))
+		flush = 1;
+	    
+	    if (flush) {
+		/* unreference this hw buffer and allocate a new one */
+		rws->buffer_reference(rws, &rbuf->buf, NULL);
+
+		rbuf->num_ranges = 0;
+		rbuf->map = NULL;
+		rbuf->buf = r300_winsys_buffer_create(r300screen,
+						      rbuf->base.alignment,
+						      rbuf->base.usage,
+						      rbuf->base.size);
+		break;
+	    }
+	}
+    }
+just_map:
+    map = rws->buffer_map(rws, rbuf->buf, usage | R300_USAGE_FLAG_DONT_SYNC);
+   
+    return map;
+}
+
+static void 
+r300_buffer_flush_mapped_range( struct pipe_screen *screen,
+				struct pipe_buffer *buf,
+				unsigned offset,
+				unsigned length )
+{
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    int i;
+
+    if (rbuf->user_buffer)
+	return;
+
+    if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
+	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+length)) {
+	    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_map(struct pipe_screen *screen,
+		struct pipe_buffer *buf,
+		unsigned usage)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    void *map;
+
+   if (rbuf->user_buffer)
+      return rbuf->user_buffer;
+
+    map = rws->buffer_map(rws, rbuf->buf, usage);
+
+    return map;
+}
+
+static void
+r300_buffer_unmap(struct pipe_screen *screen,
+		  struct pipe_buffer *buf)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+
+    if (rbuf->buf) {
+        rws->buffer_unmap(rws, rbuf->buf);
+    }
+}
+
+void r300_screen_init_buffer_functions(struct r300_screen *r300screen)
+{
+    r300screen->screen.buffer_create = r300_buffer_create;
+    r300screen->screen.user_buffer_create = r300_user_buffer_create;
+    r300screen->screen.buffer_map = r300_buffer_map;
+    r300screen->screen.buffer_map_range = r300_buffer_map_range;
+    r300screen->screen.buffer_flush_mapped_range = r300_buffer_flush_mapped_range;
+    r300screen->screen.buffer_unmap = r300_buffer_unmap;
+    r300screen->screen.buffer_destroy = r300_buffer_destroy;
+}