svga: Add svga driver

1 files changed, 115 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_vertex.c b/src/gallium/drivers/svga/svga_pipe_vertex.c
new file mode 100644
index 00000000000..28e2787e0d3
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_vertex.c
@@ -0,0 +1,115 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc.  All rights reserved.
+ *
+ * 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 the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, 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 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
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "tgsi/tgsi_parse.h"
+
+#include "svga_screen.h"
+#include "svga_screen_buffer.h"
+#include "svga_context.h"
+#include "svga_state.h"
+#include "svga_winsys.h"
+
+#include "svga_hw_reg.h"
+
+
+static void svga_set_vertex_buffers(struct pipe_context *pipe,
+                                    unsigned count,
+                                    const struct pipe_vertex_buffer *buffers)
+{
+   struct svga_context *svga = svga_context(pipe);
+   unsigned i;
+   boolean any_user_buffer = FALSE;
+
+   /* Check for no change */
+   if (count == svga->curr.num_vertex_buffers &&
+       memcmp(svga->curr.vb, buffers, count * sizeof buffers[0]) == 0)
+      return;
+
+   /* Adjust refcounts */
+   for (i = 0; i < count; i++) {
+      pipe_buffer_reference(&svga->curr.vb[i].buffer, buffers[i].buffer);
+      if (svga_buffer(buffers[i].buffer)->user)
+         any_user_buffer = TRUE;
+   }
+
+   for ( ; i < svga->curr.num_vertex_buffers; i++)
+      pipe_buffer_reference(&svga->curr.vb[i].buffer, NULL);
+
+   /* Copy remaining data */
+   memcpy(svga->curr.vb, buffers, count * sizeof buffers[0]);
+   svga->curr.num_vertex_buffers = count;
+   svga->curr.any_user_vertex_buffers = any_user_buffer;
+
+   svga->dirty |= SVGA_NEW_VBUFFER;
+}
+
+static void svga_set_vertex_elements(struct pipe_context *pipe,
+                                     unsigned count,
+                                     const struct pipe_vertex_element *elements)
+{
+   struct svga_context *svga = svga_context(pipe);
+   unsigned i;
+
+   for (i = 0; i < count; i++)
+      svga->curr.ve[i] = elements[i];
+
+   svga->curr.num_vertex_elements = count;
+   svga->dirty |= SVGA_NEW_VELEMENT;
+}
+
+
+static void svga_set_edgeflags(struct pipe_context *pipe,
+                               const unsigned *bitfield)
+{
+   struct svga_context *svga = svga_context(pipe);
+
+   if (bitfield != NULL || svga->curr.edgeflags != NULL) {
+      svga->curr.edgeflags = bitfield;
+      svga->dirty |= SVGA_NEW_EDGEFLAGS;
+   }
+}
+
+
+void svga_cleanup_vertex_state( struct svga_context *svga )
+{
+   unsigned i;
+   
+   for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
+      pipe_buffer_reference(&svga->curr.vb[i].buffer, NULL);
+}
+
+
+void svga_init_vertex_functions( struct svga_context *svga )
+{
+   svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
+   svga->pipe.set_vertex_elements = svga_set_vertex_elements;
+   svga->pipe.set_edgeflags = svga_set_edgeflags;
+}
+
+