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Forbid varyings from assigning in custom functions to prevent crashes

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This commit is contained in:
Yuri Roubinsky 2021-07-15 10:13:40 +03:00
parent 71f8253579
commit 39c06604cd
1 changed files with 13 additions and 2 deletions
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15
servers/rendering/shader_language.cpp
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@ -2436,6 +2436,10 @@ bool ShaderLanguage::_validate_function_call(BlockNode *p_block, const FunctionI
if (shader->uniforms.has(varname)) {
fail = true;
} else {
if (shader->varyings.has(varname)) {
_set_error(vformat("Varyings cannot be passed for '%s' parameter!", "out"));
return false;
}
if (p_function_info.built_ins.has(varname)) {
BuiltInInfo info = p_function_info.built_ins[varname];
if (info.constant) {
@ -3308,8 +3312,8 @@ bool ShaderLanguage::_is_operator_assign(Operator p_op) const {
}
bool ShaderLanguage::_validate_varying_assign(ShaderNode::Varying &p_varying, String *r_message) {
if (current_function == String("light")) {
*r_message = RTR("Varying may not be assigned in the 'light' function.");
if (current_function != String("vertex") && current_function != String("fragment")) {
*r_message = vformat(RTR("Varying may not be assigned in the '%s' function."), current_function);
return false;
}
switch (p_varying.stage) {
@ -3320,12 +3324,15 @@ bool ShaderLanguage::_validate_varying_assign(ShaderNode::Varying &p_varying, St
p_varying.stage = ShaderNode::Varying::STAGE_FRAGMENT;
}
break;
case ShaderNode::Varying::STAGE_VERTEX_TO_FRAGMENT:
case ShaderNode::Varying::STAGE_VERTEX_TO_LIGHT:
case ShaderNode::Varying::STAGE_VERTEX:
if (current_function == varying_function_names.fragment) {
*r_message = RTR("Varyings which assigned in 'vertex' function may not be reassigned in 'fragment' or 'light'.");
return false;
}
break;
case ShaderNode::Varying::STAGE_FRAGMENT_TO_LIGHT:
case ShaderNode::Varying::STAGE_FRAGMENT:
if (current_function == varying_function_names.vertex) {
*r_message = RTR("Varyings which assigned in 'fragment' function may not be reassigned in 'vertex' or 'light'.");
@ -4116,6 +4123,10 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
} else if (shader->uniforms.has(varname)) {
error = true;
} else {
if (shader->varyings.has(varname)) {
_set_error(vformat("Varyings cannot be passed for '%s' parameter!", _get_qualifier_str(call_function->arguments[i].qualifier)));
return nullptr;
}
if (p_function_info.built_ins.has(varname)) {
BuiltInInfo info = p_function_info.built_ins[varname];
if (info.constant) {