virgl: Always make some extra temps available for transformations

The host driver will optimize unused variables away, and checking thoroughly whether we
may need an extra temp is just uselessly costly.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15836>

diff --git a/src/gallium/drivers/virgl/virgl_tgsi.c b/src/gallium/drivers/virgl/virgl_tgsi.c
index f14583a..2a4f8bd 100644 (file)
--- a/src/gallium/drivers/virgl/virgl_tgsi.c
+++ b/src/gallium/drivers/virgl/virgl_tgsi.c
@@ -189,11 +189,9 @@ virgl_tgsi_transform_prolog(struct tgsi_transform_context * ctx)
 {
    struct virgl_transform_context *vtctx = (struct virgl_transform_context *)ctx;
 
-   if (vtctx->info.uses_doubles || vtctx->info.file_count[TGSI_FILE_SAMPLER_VIEW]) {
-      vtctx->src_temp = vtctx->next_temp;
-      vtctx->next_temp += 4;
-      tgsi_transform_temps_decl(ctx, vtctx->src_temp, vtctx->src_temp + 3);
-   }
+   vtctx->src_temp = vtctx->next_temp;
+   vtctx->next_temp += 4;
+   tgsi_transform_temps_decl(ctx, vtctx->src_temp, vtctx->src_temp + 3);
 
    if (vtctx->num_writemask_fixups) {
       vtctx->writemask_fixup_temps = vtctx->next_temp;