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glsl: Add error checking for applying interpolation qualifiers to other vars. 

Fixes piglit
glsl-1.30/compiler/interpolation-qualifiers/local-smooth-01.frag.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-01-09 16:40:20 -08:00
parent be4e46b21a
commit 916e206ef0
1 changed files with 23 additions and 0 deletions
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23
src/glsl/ast_to_hir.cpp
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@ -2010,6 +2010,29 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
else
var->interpolation = INTERP_QUALIFIER_NONE;
if (var->interpolation != INTERP_QUALIFIER_NONE &&
!(state->target == vertex_shader && var->mode == ir_var_out) &&
!(state->target == fragment_shader && var->mode == ir_var_in)) {
const char *qual_string = NULL;
switch (var->interpolation) {
case INTERP_QUALIFIER_FLAT:
qual_string = "flat";
break;
case INTERP_QUALIFIER_NOPERSPECTIVE:
qual_string = "noperspective";
break;
case INTERP_QUALIFIER_SMOOTH:
qual_string = "smooth";
break;
}
_mesa_glsl_error(loc, state,
"interpolation qualifier `%s' can only be applied to "
"vertex shader outputs and fragment shader inputs.",
qual_string);
}
var->pixel_center_integer = qual->flags.q.pixel_center_integer;
var->origin_upper_left = qual->flags.q.origin_upper_left;
if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer)