[Mesa-dev] [PATCH] glsl/fp64: disable varying packing for doubles. (v2)

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

I'm not sure we really care about this, but we need to
write better support if we do. For now just disable it.

piglit test: tests/spec/arb_gpu_shader_fp64/execution/vs-out-fs-in-double-2.shader_test

v2: move code down below to avoid getting array type.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/glsl/lower_packed_varyings.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/glsl/lower_packed_varyings.cpp b/src/glsl/lower_packed_varyings.cpp
index 5e844c7..83b70f9 100644
--- a/src/glsl/lower_packed_varyings.cpp
+++ b/src/glsl/lower_packed_varyings.cpp
@@ -598,6 +598,9 @@ lower_packed_varyings_visitor::needs_lowering(ir_variable *var)
    }
    if (type->is_array())
       type = type->fields.array;
+   /* don't attempt to pack double varyings yet */
+   if (type->base_type == GLSL_TYPE_DOUBLE)
+      return false;
    if (type->vector_elements == 4)
       return false;
    return true;
-- 
1.9.3