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Backport bc0e8e7 "Fix using post-init shader array constructors" to 3.4

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This commit is contained in:
Lyuma 2021-04-21 17:55:05 -07:00
parent 25016bf715
commit 0c028ad96e
3 changed files with 185 additions and 12 deletions
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11
drivers/gles3/shader_compiler_gles3.cpp
View file

@ -779,12 +779,13 @@ String ShaderCompilerGLES3::_dump_node_code(SL::Node *p_node, int p_level, Gener
if (anode->call_expression != nullptr) {
code += ".";
code += _dump_node_code(anode->call_expression, p_level, r_gen_code, p_actions, p_default_actions, p_assigning, false);
}
if (anode->index_expression != nullptr) {
} else if (anode->index_expression != nullptr) {
code += "[";
code += _dump_node_code(anode->index_expression, p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
code += "]";
} else if (anode->assign_expression != NULL) {
code += "=";
code += _dump_node_code(anode->assign_expression, p_level, r_gen_code, p_actions, p_default_actions, true, false);
}
if (anode->name == time_name) {
@ -952,8 +953,10 @@ String ShaderCompilerGLES3::_dump_node_code(SL::Node *p_node, int p_level, Gener
code += "[";
code += _dump_node_code(mnode->index_expression, p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
code += "]";
} else if (mnode->assign_expression != nullptr) {
code += "=";
code += _dump_node_code(mnode->assign_expression, p_level, r_gen_code, p_actions, p_default_actions, true, false);
}
} break;
}

176
servers/visual/shader_language.cpp
View file

@ -884,6 +884,7 @@ void ShaderLanguage::clear() {
char_idx = 0;
error_set = false;
error_str = "";
last_const = false;
while (nodes) {
Node *n = nodes;
nodes = nodes->next;
@ -2835,6 +2836,137 @@ bool ShaderLanguage::_validate_assign(Node *p_node, const Map<StringName, BuiltI
return false;
}
ShaderLanguage::Node *ShaderLanguage::_parse_array_constructor(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, DataType p_type, const StringName &p_struct_name, int p_array_size) {
DataType type = TYPE_VOID;
String struct_name = "";
int array_size = 0;
bool auto_size = false;
Token tk = _get_token();
if (tk.type == TK_CURLY_BRACKET_OPEN) {
auto_size = true;
} else {
if (shader->structs.has(tk.text)) {
type = TYPE_STRUCT;
struct_name = tk.text;
} else {
if (!is_token_variable_datatype(tk.type)) {
_set_error("Invalid data type for array");
return nullptr;
}
type = get_token_datatype(tk.type);
}
tk = _get_token();
if (tk.type == TK_BRACKET_OPEN) {
TkPos pos = _get_tkpos();
tk = _get_token();
if (tk.type == TK_BRACKET_CLOSE) {
array_size = p_array_size;
tk = _get_token();
} else {
_set_tkpos(pos);
Node *n = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!n || n->type != Node::TYPE_CONSTANT || n->get_datatype() != TYPE_INT) {
_set_error("Expected single integer constant > 0");
return nullptr;
}
ConstantNode *cnode = (ConstantNode *)n;
if (cnode->values.size() == 1) {
array_size = cnode->values[0].sint;
if (array_size <= 0) {
_set_error("Expected single integer constant > 0");
return nullptr;
}
} else {
_set_error("Expected single integer constant > 0");
return nullptr;
}
tk = _get_token();
if (tk.type != TK_BRACKET_CLOSE) {
_set_error("Expected ']'");
return nullptr;
} else {
tk = _get_token();
}
}
} else {
_set_error("Expected '['");
return nullptr;
}
if (type != p_type || struct_name != p_struct_name || array_size != p_array_size) {
String error_str = "Cannot convert from '";
if (type == TYPE_STRUCT) {
error_str += struct_name;
} else {
error_str += get_datatype_name(type);
}
error_str += "[";
error_str += itos(array_size);
error_str += "]'";
error_str += " to '";
if (type == TYPE_STRUCT) {
error_str += p_struct_name;
} else {
error_str += get_datatype_name(p_type);
}
error_str += "[";
error_str += itos(p_array_size);
error_str += "]'";
_set_error(error_str);
return nullptr;
}
}
ArrayConstructNode *an = alloc_node<ArrayConstructNode>();
an->datatype = p_type;
an->struct_name = p_struct_name;
if (tk.type == TK_PARENTHESIS_OPEN || auto_size) { // initialization
while (true) {
Node *n = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!n) {
return nullptr;
}
if (p_type != n->get_datatype() || p_struct_name != n->get_datatype_name()) {
_set_error("Invalid assignment of '" + (n->get_datatype() == TYPE_STRUCT ? n->get_datatype_name() : get_datatype_name(n->get_datatype())) + "' to '" + (type == TYPE_STRUCT ? struct_name : get_datatype_name(type)) + "'");
return nullptr;
}
tk = _get_token();
if (tk.type == TK_COMMA) {
an->initializer.push_back(n);
} else if (!auto_size && tk.type == TK_PARENTHESIS_CLOSE) {
an->initializer.push_back(n);
break;
} else if (auto_size && tk.type == TK_CURLY_BRACKET_CLOSE) {
an->initializer.push_back(n);
break;
} else {
if (auto_size) {
_set_error("Expected '}' or ','");
} else {
_set_error("Expected ')' or ','");
}
return nullptr;
}
}
if (an->initializer.size() != p_array_size) {
_set_error("Array size mismatch");
return nullptr;
}
} else {
_set_error("Expected array initialization!");
return nullptr;
}
return an;
}
ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types) {
Vector<Expression> expression;
@ -2976,6 +3108,10 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
Node *nexpr;
if (pstruct->members[i]->array_size != 0) {
nexpr = _parse_array_constructor(p_block, p_builtin_types, pstruct->members[i]->get_datatype(), pstruct->members[i]->struct_name, pstruct->members[i]->array_size);
if (!nexpr) {
return nullptr;
}
DataType type = pstruct->members[i]->get_datatype();
String struct_name = pstruct->members[i]->struct_name;
@ -3111,8 +3247,6 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
_set_error("Expected array initialization!");
return nullptr;
}
nexpr = an;
} else {
nexpr = _parse_and_reduce_expression(p_block, p_builtin_types);
if (!nexpr) {
@ -3255,6 +3389,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
} else {
//an identifier
last_const = false;
_set_tkpos(pos);
DataType data_type;
@ -3283,6 +3418,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
_set_error("Unknown identifier in expression: " + String(identifier));
return nullptr;
}
last_const = is_const;
if (ident_type == IDENTIFIER_FUNCTION) {
_set_error("Can't use function as identifier: " + String(identifier));
@ -3292,16 +3428,30 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
Node *index_expression = nullptr;
Node *call_expression = nullptr;
Node *assign_expression = nullptr;
if (array_size > 0) {
tk = _get_token();
if (tk.type != TK_BRACKET_OPEN && tk.type != TK_PERIOD) {
_set_error("Expected '[' or '.'");
if (tk.type != TK_BRACKET_OPEN && tk.type != TK_PERIOD && tk.type != TK_OP_ASSIGN) {
_set_error("Expected '[','.' or '='");
return nullptr;
}
if (tk.type == TK_PERIOD) {
if (tk.type == TK_OP_ASSIGN) {
if (is_const) {
_set_error("Constants cannot be modified.");
return nullptr;
}
if (shader->varyings.has(identifier) && current_function != String("vertex")) {
_set_error("Varyings can only be assigned in vertex function.");
return nullptr;
}
assign_expression = _parse_array_constructor(p_block, p_builtin_types, data_type, struct_name, array_size);
if (!assign_expression) {
return nullptr;
}
} else if (tk.type == TK_PERIOD) {
completion_class = TAG_ARRAY;
p_block->block_tag = SubClassTag::TAG_ARRAY;
call_expression = _parse_and_reduce_expression(p_block, p_builtin_types);
@ -3348,6 +3498,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
arrname->struct_name = struct_name;
arrname->index_expression = index_expression;
arrname->call_expression = call_expression;
arrname->assign_expression = assign_expression;
arrname->is_const = is_const;
expr = arrname;
@ -3575,7 +3726,18 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
mn->owner = expr;
if (array_size > 0) {
tk = _get_token();
if (tk.type == TK_PERIOD) {
if (tk.type == TK_OP_ASSIGN) {
if (last_const) {
last_const = false;
_set_error("Constants cannot be modified.");
return nullptr;
}
Node *assign_expression = _parse_array_constructor(p_block, p_builtin_types, member_type, member_struct_name, array_size);
if (!assign_expression) {
return nullptr;
}
mn->assign_expression = assign_expression;
} else if (tk.type == TK_PERIOD) {
_set_error("Nested array length() is not yet implemented");
return nullptr;
} else if (tk.type == TK_BRACKET_OPEN) {
@ -3609,7 +3771,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
mn->index_expression = index_expression;
} else {
_set_error("Expected '[' or '.'");
_set_error("Expected '[','.' or '='");
return nullptr;
}
}

10
servers/visual/shader_language.h
View file

@ -386,6 +386,7 @@ public:
StringName name;
Node *index_expression;
Node *call_expression;
Node *assign_expression;
bool is_const;
virtual DataType get_datatype() const { return datatype_cache; }
@ -396,6 +397,7 @@ public:
datatype_cache(TYPE_VOID),
index_expression(nullptr),
call_expression(nullptr),
assign_expression(nullptr),
is_const(false) {}
};
@ -508,6 +510,8 @@ public:
StringName name;
Node *owner;
Node *index_expression;
Node *assign_expression;
bool has_swizzling_duplicates;
virtual DataType get_datatype() const { return datatype; }
virtual String get_datatype_name() const { return String(struct_name); }
@ -518,7 +522,9 @@ public:
datatype(TYPE_VOID),
array_size(0),
owner(nullptr),
index_expression(nullptr) {}
index_expression(nullptr),
assign_expression(nullptr),
has_swizzling_duplicates(false) {}
};
struct StructNode : public Node {
@ -726,6 +732,7 @@ private:
int tk_line;
StringName current_function;
bool last_const = false;
struct TkPos {
int char_idx;
@ -810,6 +817,7 @@ private:
bool _parse_function_arguments(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, OperatorNode *p_func, int *r_complete_arg = nullptr);
Node *_parse_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types);
Node *_parse_array_constructor(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, DataType p_type, const StringName &p_struct_name, int p_array_size);
ShaderLanguage::Node *_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node);
Node *_parse_and_reduce_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types);