llvmpipe: make geometry shaders and stream output work

1 files changed, 138 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_state_so.c b/src/gallium/drivers/llvmpipe/lp_state_so.c
new file mode 100644
index 0000000000..4c64a5b142
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_state_so.c
@@ -0,0 +1,138 @@
+/**************************************************************************
+ *
+ * Copyright 2010 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, 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 VMWARE AND/OR ITS 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 "lp_context.h"
+#include "lp_state.h"
+#include "lp_texture.h"
+
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "draw/draw_context.h"
+
+
+static void *
+llvmpipe_create_stream_output_state(struct pipe_context *pipe,
+                                    const struct pipe_stream_output_state *templ)
+{
+   struct lp_so_state *so;
+   so = (struct lp_so_state *) CALLOC_STRUCT(lp_so_state);
+
+   if (so) {
+      so->base.num_outputs = templ->num_outputs;
+      so->base.stride = templ->stride;
+      memcpy(so->base.output_buffer,
+             templ->output_buffer,
+             sizeof(int) * templ->num_outputs);
+      memcpy(so->base.register_index,
+             templ->register_index,
+             sizeof(int) * templ->num_outputs);
+      memcpy(so->base.register_mask,
+             templ->register_mask,
+             sizeof(ubyte) * templ->num_outputs);
+   }
+   return so;
+}
+
+static void
+llvmpipe_bind_stream_output_state(struct pipe_context *pipe,
+                                  void *so)
+{
+   struct llvmpipe_context *lp = llvmpipe_context(pipe);
+   struct lp_so_state *lp_so = (struct lp_so_state *) so;
+
+   lp->so = lp_so;
+
+   lp->dirty |= LP_NEW_SO;
+
+   if (lp_so)
+      draw_set_so_state(lp->draw, &lp_so->base);
+}
+
+static void
+llvmpipe_delete_stream_output_state(struct pipe_context *pipe, void *so)
+{
+   FREE( so );
+}
+
+static void
+llvmpipe_set_stream_output_buffers(struct pipe_context *pipe,
+                                   struct pipe_resource **buffers,
+                                   int *offsets,
+                                   int num_buffers)
+{
+   struct llvmpipe_context *lp = llvmpipe_context(pipe);
+   int i;
+   void *map_buffers[PIPE_MAX_SO_BUFFERS];
+
+   assert(num_buffers <= PIPE_MAX_SO_BUFFERS);
+   if (num_buffers > PIPE_MAX_SO_BUFFERS)
+      num_buffers = PIPE_MAX_SO_BUFFERS;
+
+   lp->dirty |= LP_NEW_SO_BUFFERS;
+
+   for (i = 0; i < num_buffers; ++i) {
+      void *mapped;
+      struct llvmpipe_resource *res = llvmpipe_resource(buffers[i]);
+
+      if (!res) {
+         /* the whole call is invalid, bail out */
+         lp->so_target.num_buffers = 0;
+         draw_set_mapped_so_buffers(lp->draw, 0, 0);
+         return;
+      }
+
+      lp->so_target.buffer[i] = res;
+      lp->so_target.offset[i] = offsets[i];
+      lp->so_target.so_count[i] = 0;
+
+      mapped = res->data;
+      if (offsets[i] >= 0)
+         map_buffers[i] = ((char*)mapped) + offsets[i];
+      else {
+         /* this is a buffer append */
+         assert(!"appending not implemented");
+         map_buffers[i] = mapped;
+      }
+   }
+   lp->so_target.num_buffers = num_buffers;
+
+   draw_set_mapped_so_buffers(lp->draw, map_buffers, num_buffers);
+}
+
+void
+llvmpipe_init_so_funcs(struct llvmpipe_context *llvmpipe)
+{
+   llvmpipe->pipe.create_stream_output_state =
+      llvmpipe_create_stream_output_state;
+   llvmpipe->pipe.bind_stream_output_state =
+      llvmpipe_bind_stream_output_state;
+   llvmpipe->pipe.delete_stream_output_state =
+      llvmpipe_delete_stream_output_state;
+
+   llvmpipe->pipe.set_stream_output_buffers =
+      llvmpipe_set_stream_output_buffers;
+}