---
src/compiler/glsl/ast_to_hir.cpp | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index c050a3f..ac651a9 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -3948,6 +3948,19 @@ get_variable_being_redeclared(ir_variable *var, YYLTYPE
loc,
earlier->data.depth_layout = var->data.depth_layout;
+ } else if (state->has_framebuffer_fetch() &&
+ !state->is_version(420, 300) &&
+ strcmp(var->name, "gl_LastFragData") == 0 &&
+ var->type == earlier->type &&
+ var->data.mode == ir_var_auto) {
+ /* According to the EXT_shader_framebuffer_fetch spec:
+ *
+ * "By default, gl_LastFragData is declared with the mediump precision
+ * qualifier. This can be changed by redeclaring the corresponding
+ * variables with the desired precision qualifier."
+ */
+ earlier->data.precision = var->data.precision;
+
} else if (allow_all_redeclarations) {
if (earlier->data.mode != var->data.mode) {
_mesa_glsl_error(&loc, state,
--
2.9.0
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