1 files changed, 66 insertions, 0 deletions
diff --git a/src/gallium/drivers/virgl/virgl_tgsi.c b/src/gallium/drivers/virgl/virgl_tgsi.c
new file mode 100644
index 00000000000..641b0b3e3b5
--- /dev/null
+++ b/src/gallium/drivers/virgl/virgl_tgsi.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2014, 2015 Red Hat.
+ *
+ * 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.
+ */
+
+/* the virgl hw tgsi vs what the current gallium want will diverge over time.
+   so add a transform stage to remove things we don't want to send unless
+   the receiver supports it.
+*/
+#include "tgsi/tgsi_transform.h"
+#include "virgl_context.h"
+struct virgl_transform_context {
+   struct tgsi_transform_context base;
+};
+
+/* for now just strip out the new properties the remote doesn't understand
+   yet */
+static void
+virgl_tgsi_transform_property(struct tgsi_transform_context *ctx,
+                              struct tgsi_full_property *prop)
+{
+   switch (prop->Property.PropertyName) {
+   case TGSI_PROPERTY_NUM_CLIPDIST_ENABLED:
+   case TGSI_PROPERTY_NUM_CULLDIST_ENABLED:
+      break;
+   default:
+      ctx->emit_property(ctx, prop);
+      break;
+   }
+}
+
+struct tgsi_token *virgl_tgsi_transform(const struct tgsi_token *tokens_in)
+{
+
+   struct virgl_transform_context transform;
+   const uint newLen = tgsi_num_tokens(tokens_in);
+   struct tgsi_token *new_tokens;
+
+   new_tokens = tgsi_alloc_tokens(newLen);
+   if (!new_tokens)
+      return NULL;
+
+   memset(&transform, 0, sizeof(transform));
+   transform.base.transform_property = virgl_tgsi_transform_property;
+   tgsi_transform_shader(tokens_in, new_tokens, newLen, &transform.base);
+
+   return new_tokens;
+}