}
if (var->type.qualifier == SLANG_QUAL_CONST ||
var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
- var->type.qualifier == SLANG_QUAL_UNIFORM) {
+ var->type.qualifier == SLANG_QUAL_UNIFORM ||
+ (var->type.qualifier == SLANG_QUAL_VARYING &&
+ A->program->Target == GL_FRAGMENT_PROGRAM_ARB)) {
slang_info_log_error(A->log,
"illegal assignment to read-only variable '%s'",
(char *) oper->children[0].a_id);
lhs = _slang_gen_operation(A, &oper->children[0]);
if (lhs) {
- if (lhs->Store->File != PROGRAM_OUTPUT &&
- lhs->Store->File != PROGRAM_TEMPORARY &&
- lhs->Store->File != PROGRAM_VARYING &&
- lhs->Store->File != PROGRAM_UNDEFINED) {
+ if (!(lhs->Store->File == PROGRAM_OUTPUT ||
+ lhs->Store->File == PROGRAM_TEMPORARY ||
+ (lhs->Store->File == PROGRAM_VARYING &&
+ A->program->Target == GL_VERTEX_PROGRAM_ARB) ||
+ lhs->Store->File == PROGRAM_UNDEFINED)) {
slang_info_log_error(A->log,
"illegal assignment to read-only l-value");
return NULL;