Signed-off-by: Tapani Pälli <[email protected]>
---
src/glsl/link_varyings.cpp | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/glsl/link_varyings.cpp b/src/glsl/link_varyings.cpp
index 7b2d4bd..a19ee39 100644
--- a/src/glsl/link_varyings.cpp
+++ b/src/glsl/link_varyings.cpp
@@ -128,7 +128,17 @@ cross_validate_types_and_qualifiers(struct
gl_shader_program *prog,
return;
}
- if (input->data.interpolation != output->data.interpolation) {
+ /* GLSL >= 4.40 removes text requiring interpolation qualifiers
+ * to match cross stage, they must only match within the same stage.
+ *
+ * From page 84 (page 90 of the PDF) of the GLSL 4.40 spec:
+ *
+ * "It is a link-time error if, within the same stage, the interpolation
+ * qualifiers of variables of the same name do not match.
+ *
+ */
+ if (input->data.interpolation != output->data.interpolation &&
+ prog->Version < 440) {
linker_error(prog,
"%s shader output `%s' specifies %s "
"interpolation qualifier, "
--
2.1.0
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