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generate error upon writing to varying var in fragment program (bug 11733)

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This commit is contained in:
Brian 2007-07-26 11:39:37 -06:00
parent ff1a28de17
commit a57c5a417b
1 changed files with 8 additions and 5 deletions
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13
src/mesa/shader/slang/slang_codegen.c
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@ -2236,7 +2236,9 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
}
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);
@ -2264,10 +2266,11 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
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;