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-rw-r--r--src/compiler/glsl/ast_to_hir.cpp11
-rw-r--r--src/compiler/glsl/link_varyings.cpp17
2 files changed, 16 insertions, 12 deletions
diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index c46454956d7..1999e68158c 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -3126,17 +3126,6 @@ interpret_interpolation_qualifier(const struct ast_type_qualifier *qual,
interpolation = INTERP_MODE_NOPERSPECTIVE;
else if (qual->flags.q.smooth)
interpolation = INTERP_MODE_SMOOTH;
- else if (state->es_shader &&
- ((mode == ir_var_shader_in &&
- state->stage != MESA_SHADER_VERTEX) ||
- (mode == ir_var_shader_out &&
- state->stage != MESA_SHADER_FRAGMENT)))
- /* Section 4.3.9 (Interpolation) of the GLSL ES 3.00 spec says:
- *
- * "When no interpolation qualifier is present, smooth interpolation
- * is used."
- */
- interpolation = INTERP_MODE_SMOOTH;
else
interpolation = INTERP_MODE_NONE;
diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp
index 656bf79ca9d..ed3bf416878 100644
--- a/src/compiler/glsl/link_varyings.cpp
+++ b/src/compiler/glsl/link_varyings.cpp
@@ -325,8 +325,23 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog,
* "It is a link-time error if, within the same stage, the interpolation
* qualifiers of variables of the same name do not match.
*
+ * Section 4.3.9 (Interpolation) of the GLSL ES 3.00 spec says:
+ *
+ * "When no interpolation qualifier is present, smooth interpolation
+ * is used."
+ *
+ * So we match variables where one is smooth and the other has no explicit
+ * qualifier.
*/
- if (input->data.interpolation != output->data.interpolation &&
+ unsigned input_interpolation = input->data.interpolation;
+ unsigned output_interpolation = output->data.interpolation;
+ if (prog->IsES) {
+ if (input_interpolation == INTERP_MODE_NONE)
+ input_interpolation = INTERP_MODE_SMOOTH;
+ if (output_interpolation == INTERP_MODE_NONE)
+ output_interpolation = INTERP_MODE_SMOOTH;
+ }
+ if (input_interpolation != output_interpolation &&
prog->data->Version < 440) {
linker_error(prog,
"%s shader output `%s' specifies %s "