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Add derivative functions with precision to shaders

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This commit is contained in:
Yuri Rubinsky
2023-01-26 14:31:37 +03:00
parent 44c0bfc94d
commit 8c8c333bf2
4 changed files with 128 additions and 4 deletions
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62
scene/resources/visual_shader_nodes.cpp
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@ -3690,16 +3690,47 @@ String VisualShaderNodeDerivativeFunc::get_output_port_name(int p_port) const {
String VisualShaderNodeDerivativeFunc::generate_code(Shader::Mode p_mode, VisualShader::Type p_type, int p_id, const String *p_input_vars, const String *p_output_vars, bool p_for_preview) const {
static const char *functions[FUNC_MAX] = {
"fwidth($)",
"dFdx($)",
"dFdy($)"
"fwidth$($)",
"dFdx$($)",
"dFdy$($)"
};
static const char *precisions[PRECISION_MAX] = {
"",
"Coarse",
"Fine"
};
String code;
code += " " + p_output_vars[0] + " = " + String(functions[func]).replace("$", p_input_vars[0]) + ";\n";
if (OS::get_singleton()->get_current_rendering_method() == "gl_compatibility") {
code += " " + p_output_vars[0] + " = " + String(functions[func]).replace_first("$", "").replace_first("$", p_input_vars[0]) + ";\n";
return code;
}
code += " " + p_output_vars[0] + " = " + String(functions[func]).replace_first("$", String(precisions[precision])).replace_first("$", p_input_vars[0]) + ";\n";
return code;
}
String VisualShaderNodeDerivativeFunc::get_warning(Shader::Mode p_mode, VisualShader::Type p_type) const {
if (precision != PRECISION_NONE && OS::get_singleton()->get_current_rendering_method() == "gl_compatibility") {
String precision_str;
switch (precision) {
case PRECISION_COARSE: {
precision_str = "Coarse";
} break;
case PRECISION_FINE: {
precision_str = "Fine";
} break;
default: {
} break;
}
return vformat(RTR("`%s` precision mode is not available for `gl_compatibility` profile.\nReverted to `None` precision."), precision_str);
}
return String();
}
void VisualShaderNodeDerivativeFunc::set_op_type(OpType p_op_type) {
ERR_FAIL_INDEX((int)p_op_type, int(OP_TYPE_MAX));
if (op_type == p_op_type) {
@ -3742,10 +3773,24 @@ VisualShaderNodeDerivativeFunc::Function VisualShaderNodeDerivativeFunc::get_fun
return func;
}
void VisualShaderNodeDerivativeFunc::set_precision(Precision p_precision) {
ERR_FAIL_INDEX(int(p_precision), int(PRECISION_MAX));
if (precision == p_precision) {
return;
}
precision = p_precision;
emit_changed();
}
VisualShaderNodeDerivativeFunc::Precision VisualShaderNodeDerivativeFunc::get_precision() const {
return precision;
}
Vector<StringName> VisualShaderNodeDerivativeFunc::get_editable_properties() const {
Vector<StringName> props;
props.push_back("op_type");
props.push_back("function");
props.push_back("precision");
return props;
}
@ -3756,8 +3801,12 @@ void VisualShaderNodeDerivativeFunc::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_function", "func"), &VisualShaderNodeDerivativeFunc::set_function);
ClassDB::bind_method(D_METHOD("get_function"), &VisualShaderNodeDerivativeFunc::get_function);
ClassDB::bind_method(D_METHOD("set_precision", "precision"), &VisualShaderNodeDerivativeFunc::set_precision);
ClassDB::bind_method(D_METHOD("get_precision"), &VisualShaderNodeDerivativeFunc::get_precision);
ADD_PROPERTY(PropertyInfo(Variant::INT, "op_type", PROPERTY_HINT_ENUM, "Scalar,Vector2,Vector3,Vector4"), "set_op_type", "get_op_type");
ADD_PROPERTY(PropertyInfo(Variant::INT, "function", PROPERTY_HINT_ENUM, "Sum,X,Y"), "set_function", "get_function");
ADD_PROPERTY(PropertyInfo(Variant::INT, "precision", PROPERTY_HINT_ENUM, "None,Coarse,Fine"), "set_precision", "get_precision");
BIND_ENUM_CONSTANT(OP_TYPE_SCALAR);
BIND_ENUM_CONSTANT(OP_TYPE_VECTOR_2D);
@ -3769,6 +3818,11 @@ void VisualShaderNodeDerivativeFunc::_bind_methods() {
BIND_ENUM_CONSTANT(FUNC_X);
BIND_ENUM_CONSTANT(FUNC_Y);
BIND_ENUM_CONSTANT(FUNC_MAX);
BIND_ENUM_CONSTANT(PRECISION_NONE);
BIND_ENUM_CONSTANT(PRECISION_COARSE);
BIND_ENUM_CONSTANT(PRECISION_FINE);
BIND_ENUM_CONSTANT(PRECISION_MAX);
}
VisualShaderNodeDerivativeFunc::VisualShaderNodeDerivativeFunc() {