[Mesa-dev] [PATCH] st/glsl_to_tgsi: fix st_src_reg_for_double constant.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This needs to set the src swizzle so it doesn't access the .zw
members ever when we are just emitting a 0 constant here.

This fixes:
vert-conversion-explicit-dvec3-bvec3.shader_test
and a bunch of other fp64 tests on softpipe and radeonsi.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 197b3af..b29cd96 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1134,7 +1134,7 @@ glsl_to_tgsi_visitor::st_src_reg_for_double(double val)
    uval[0].u = *(uint32_t *)&val;
    uval[1].u = *(((uint32_t *)&val) + 1);
    src.index = add_constant(src.file, uval, 1, GL_DOUBLE, &src.swizzle);
-
+   src.swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_X, SWIZZLE_Y);
    return src;
 }
 
-- 
2.5.5