r300g: Work around "defect" in r300compiler.

r300compiler doesn't handle half swizzles for vert shaders, which don't
have them. So, for now, disable them.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_tgsi_to_rc.h b/src/gallium/drivers/r300/r300_tgsi_to_rc.h
index 39b473c..97641a9 100644
--- a/src/gallium/drivers/r300/r300_tgsi_to_rc.h
+++ b/src/gallium/drivers/r300/r300_tgsi_to_rc.h
@@ -23,6 +23,8 @@
 #ifndef R300_TGSI_TO_RC_H
 #define R300_TGSI_TO_RC_H
 
+#include "pipe/p_compiler.h"
+
 struct radeon_compiler;
 
 struct tgsi_full_declaration;
@@ -41,6 +43,10 @@ struct tgsi_to_rc {
     int immediate_offset;
     struct swizzled_imms * imms_to_swizzle;
     unsigned imms_to_swizzle_count;
+
+    /* Vertex shaders have no half swizzles, and no way to handle them, so
+     * until rc grows proper support, indicate if they're safe to use. */
+    boolean use_half_swizzles;
 };
 
 void r300_tgsi_to_rc(struct tgsi_to_rc * ttr, const struct tgsi_token * tokens);