gallium: simplify tgsi_full_immediate struct

Remove the need to have a pointer in this struct by just including
the immediate data inline.  Having a pointer in the struct introduces
complications like needing to alloc/free the data pointed to, uncertainty
about who owns the data, etc.  There doesn't seem to be a need for it,
and it is unlikely to make much difference plus or minus to performance.

Added some asserts as we now will trip up on immediates with more
than four elements.  There were actually already quite a few such asserts,
but the >4 case could be used in the future to specify indexable immediate
ranges, such as lookup tables.

1 files changed, 1 insertions, 5 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_parse.h b/src/gallium/auxiliary/tgsi/tgsi_parse.h
index a289e26e3ac..1035bda1a87 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_parse.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_parse.h
@@ -73,11 +73,7 @@ struct tgsi_full_declaration
 struct tgsi_full_immediate
 {
    struct tgsi_immediate   Immediate;
-   union
-   {
-      const void                          *Pointer;
-      const struct tgsi_immediate_float32 *ImmediateFloat32;
-   } u;
+   union tgsi_immediate_data u[4];
 };
 
 #define TGSI_FULL_MAX_DST_REGISTERS 2