godot/servers/rendering/shader_language.h

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/*************************************************************************/
/* shader_language.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
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/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
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#ifndef SHADER_LANGUAGE_H
#define SHADER_LANGUAGE_H
#include "core/list.h"
#include "core/map.h"
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#include "core/script_language.h"
#include "core/string_name.h"
#include "core/typedefs.h"
#include "core/ustring.h"
#include "core/variant.h"
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class ShaderLanguage {
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public:
enum TokenType {
TK_EMPTY,
TK_IDENTIFIER,
TK_TRUE,
TK_FALSE,
TK_REAL_CONSTANT,
TK_INT_CONSTANT,
TK_TYPE_VOID,
TK_TYPE_BOOL,
TK_TYPE_BVEC2,
TK_TYPE_BVEC3,
TK_TYPE_BVEC4,
TK_TYPE_INT,
TK_TYPE_IVEC2,
TK_TYPE_IVEC3,
TK_TYPE_IVEC4,
TK_TYPE_UINT,
TK_TYPE_UVEC2,
TK_TYPE_UVEC3,
TK_TYPE_UVEC4,
TK_TYPE_FLOAT,
TK_TYPE_VEC2,
TK_TYPE_VEC3,
TK_TYPE_VEC4,
TK_TYPE_MAT2,
TK_TYPE_MAT3,
TK_TYPE_MAT4,
TK_TYPE_SAMPLER2D,
TK_TYPE_ISAMPLER2D,
TK_TYPE_USAMPLER2D,
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TK_TYPE_SAMPLER2DARRAY,
TK_TYPE_ISAMPLER2DARRAY,
TK_TYPE_USAMPLER2DARRAY,
TK_TYPE_SAMPLER3D,
TK_TYPE_ISAMPLER3D,
TK_TYPE_USAMPLER3D,
TK_TYPE_SAMPLERCUBE,
TK_INTERPOLATION_FLAT,
TK_INTERPOLATION_SMOOTH,
TK_CONST,
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TK_STRUCT,
TK_PRECISION_LOW,
TK_PRECISION_MID,
TK_PRECISION_HIGH,
TK_OP_EQUAL,
TK_OP_NOT_EQUAL,
TK_OP_LESS,
TK_OP_LESS_EQUAL,
TK_OP_GREATER,
TK_OP_GREATER_EQUAL,
TK_OP_AND,
TK_OP_OR,
TK_OP_NOT,
TK_OP_ADD,
TK_OP_SUB,
TK_OP_MUL,
TK_OP_DIV,
TK_OP_MOD,
TK_OP_SHIFT_LEFT,
TK_OP_SHIFT_RIGHT,
TK_OP_ASSIGN,
TK_OP_ASSIGN_ADD,
TK_OP_ASSIGN_SUB,
TK_OP_ASSIGN_MUL,
TK_OP_ASSIGN_DIV,
TK_OP_ASSIGN_MOD,
TK_OP_ASSIGN_SHIFT_LEFT,
TK_OP_ASSIGN_SHIFT_RIGHT,
TK_OP_ASSIGN_BIT_AND,
TK_OP_ASSIGN_BIT_OR,
TK_OP_ASSIGN_BIT_XOR,
TK_OP_BIT_AND,
TK_OP_BIT_OR,
TK_OP_BIT_XOR,
TK_OP_BIT_INVERT,
TK_OP_INCREMENT,
TK_OP_DECREMENT,
TK_CF_IF,
TK_CF_ELSE,
TK_CF_FOR,
TK_CF_WHILE,
TK_CF_DO,
TK_CF_SWITCH,
TK_CF_CASE,
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TK_CF_DEFAULT,
TK_CF_BREAK,
TK_CF_CONTINUE,
TK_CF_RETURN,
TK_CF_DISCARD,
TK_BRACKET_OPEN,
TK_BRACKET_CLOSE,
TK_CURLY_BRACKET_OPEN,
TK_CURLY_BRACKET_CLOSE,
TK_PARENTHESIS_OPEN,
TK_PARENTHESIS_CLOSE,
TK_QUESTION,
TK_COMMA,
TK_COLON,
TK_SEMICOLON,
TK_PERIOD,
TK_UNIFORM,
TK_VARYING,
TK_ARG_IN,
TK_ARG_OUT,
TK_ARG_INOUT,
TK_RENDER_MODE,
TK_HINT_WHITE_TEXTURE,
TK_HINT_BLACK_TEXTURE,
TK_HINT_NORMAL_TEXTURE,
TK_HINT_ROUGHNESS_NORMAL_TEXTURE,
TK_HINT_ROUGHNESS_R,
TK_HINT_ROUGHNESS_G,
TK_HINT_ROUGHNESS_B,
TK_HINT_ROUGHNESS_A,
TK_HINT_ROUGHNESS_GRAY,
TK_HINT_ANISO_TEXTURE,
TK_HINT_ALBEDO_TEXTURE,
TK_HINT_BLACK_ALBEDO_TEXTURE,
TK_HINT_COLOR,
TK_HINT_RANGE,
TK_FILTER_NEAREST,
TK_FILTER_LINEAR,
TK_FILTER_NEAREST_MIPMAP,
TK_FILTER_LINEAR_MIPMAP,
TK_FILTER_NEAREST_MIPMAP_ANISO,
TK_FILTER_LINEAR_MIPMAP_ANISO,
TK_REPEAT_ENABLE,
TK_REPEAT_DISABLE,
TK_SHADER_TYPE,
TK_CURSOR,
TK_ERROR,
TK_EOF,
TK_MAX
};
/* COMPILER */
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// lame work around to Apple defining this as a macro in 10.12 SDK
#ifdef TYPE_BOOL
#undef TYPE_BOOL
#endif
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enum DataType {
TYPE_VOID,
TYPE_BOOL,
TYPE_BVEC2,
TYPE_BVEC3,
TYPE_BVEC4,
TYPE_INT,
TYPE_IVEC2,
TYPE_IVEC3,
TYPE_IVEC4,
TYPE_UINT,
TYPE_UVEC2,
TYPE_UVEC3,
TYPE_UVEC4,
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TYPE_FLOAT,
TYPE_VEC2,
TYPE_VEC3,
TYPE_VEC4,
TYPE_MAT2,
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TYPE_MAT3,
TYPE_MAT4,
TYPE_SAMPLER2D,
TYPE_ISAMPLER2D,
TYPE_USAMPLER2D,
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TYPE_SAMPLER2DARRAY,
TYPE_ISAMPLER2DARRAY,
TYPE_USAMPLER2DARRAY,
TYPE_SAMPLER3D,
TYPE_ISAMPLER3D,
TYPE_USAMPLER3D,
TYPE_SAMPLERCUBE,
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TYPE_STRUCT,
};
enum DataPrecision {
PRECISION_LOWP,
PRECISION_MEDIUMP,
PRECISION_HIGHP,
PRECISION_DEFAULT,
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};
enum DataInterpolation {
INTERPOLATION_FLAT,
INTERPOLATION_SMOOTH,
};
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enum Operator {
OP_EQUAL,
OP_NOT_EQUAL,
OP_LESS,
OP_LESS_EQUAL,
OP_GREATER,
OP_GREATER_EQUAL,
OP_AND,
OP_OR,
OP_NOT,
OP_NEGATE,
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OP_ADD,
OP_SUB,
OP_MUL,
OP_DIV,
OP_MOD,
OP_SHIFT_LEFT,
OP_SHIFT_RIGHT,
OP_ASSIGN,
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OP_ASSIGN_ADD,
OP_ASSIGN_SUB,
OP_ASSIGN_MUL,
OP_ASSIGN_DIV,
OP_ASSIGN_MOD,
OP_ASSIGN_SHIFT_LEFT,
OP_ASSIGN_SHIFT_RIGHT,
OP_ASSIGN_BIT_AND,
OP_ASSIGN_BIT_OR,
OP_ASSIGN_BIT_XOR,
OP_BIT_AND,
OP_BIT_OR,
OP_BIT_XOR,
OP_BIT_INVERT,
OP_INCREMENT,
OP_DECREMENT,
OP_SELECT_IF,
OP_SELECT_ELSE, //used only internally, then only IF appears with 3 arguments
OP_POST_INCREMENT,
OP_POST_DECREMENT,
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OP_CALL,
OP_CONSTRUCT,
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OP_STRUCT,
OP_INDEX,
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OP_MAX
};
enum FlowOperation {
FLOW_OP_IF,
FLOW_OP_RETURN,
FLOW_OP_FOR,
FLOW_OP_WHILE,
FLOW_OP_DO,
FLOW_OP_BREAK,
FLOW_OP_SWITCH,
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FLOW_OP_CASE,
FLOW_OP_DEFAULT,
FLOW_OP_CONTINUE,
FLOW_OP_DISCARD
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};
enum ArgumentQualifier {
ARGUMENT_QUALIFIER_IN,
ARGUMENT_QUALIFIER_OUT,
ARGUMENT_QUALIFIER_INOUT,
};
enum SubClassTag {
TAG_GLOBAL,
TAG_ARRAY,
};
enum TextureFilter {
FILTER_NEAREST,
FILTER_LINEAR,
FILTER_NEAREST_MIPMAP,
FILTER_LINEAR_MIPMAP,
FILTER_NEAREST_MIPMAP_ANISO,
FILTER_LINEAR_MIPMAP_ANISO,
FILTER_DEFAULT,
};
enum TextureRepeat {
REPEAT_DISABLE,
REPEAT_ENABLE,
REPEAT_DEFAULT,
};
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struct Node {
Node *next;
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enum Type {
TYPE_SHADER,
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TYPE_FUNCTION,
TYPE_BLOCK,
TYPE_VARIABLE,
TYPE_VARIABLE_DECLARATION,
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TYPE_CONSTANT,
TYPE_OPERATOR,
TYPE_CONTROL_FLOW,
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TYPE_MEMBER,
TYPE_ARRAY,
TYPE_ARRAY_DECLARATION,
TYPE_ARRAY_CONSTRUCT,
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TYPE_STRUCT,
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};
Type type;
virtual DataType get_datatype() const { return TYPE_VOID; }
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virtual String get_datatype_name() const { return ""; }
Node(Type t) :
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next(nullptr),
type(t) {}
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virtual ~Node() {}
};
template <class T>
T *alloc_node() {
T *node = memnew(T);
node->next = nodes;
nodes = node;
return node;
}
Node *nodes;
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struct OperatorNode : public Node {
DataType return_cache;
DataPrecision return_precision_cache;
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Operator op;
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StringName struct_name;
Vector<Node *> arguments;
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virtual DataType get_datatype() const { return return_cache; }
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virtual String get_datatype_name() const { return String(struct_name); }
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OperatorNode() :
Node(TYPE_OPERATOR),
return_cache(TYPE_VOID),
return_precision_cache(PRECISION_DEFAULT),
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op(OP_EQUAL),
struct_name("") {}
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};
struct VariableNode : public Node {
DataType datatype_cache;
StringName name;
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StringName struct_name;
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virtual DataType get_datatype() const { return datatype_cache; }
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virtual String get_datatype_name() const { return String(struct_name); }
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bool is_const;
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VariableNode() :
Node(TYPE_VARIABLE),
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datatype_cache(TYPE_VOID),
is_const(false) {}
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};
struct VariableDeclarationNode : public Node {
DataPrecision precision;
DataType datatype;
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String struct_name;
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bool is_const;
struct Declaration {
StringName name;
Node *initializer;
};
Vector<Declaration> declarations;
virtual DataType get_datatype() const { return datatype; }
VariableDeclarationNode() :
Node(TYPE_VARIABLE_DECLARATION),
precision(PRECISION_DEFAULT),
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datatype(TYPE_VOID),
is_const(false) {}
};
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struct ArrayNode : public Node {
DataType datatype_cache;
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StringName struct_name;
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StringName name;
Node *index_expression;
Node *call_expression;
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bool is_const;
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virtual DataType get_datatype() const { return datatype_cache; }
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virtual String get_datatype_name() const { return String(struct_name); }
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ArrayNode() :
Node(TYPE_ARRAY),
datatype_cache(TYPE_VOID),
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index_expression(nullptr),
call_expression(nullptr),
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is_const(false) {}
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};
struct ArrayConstructNode : public Node {
DataType datatype;
String struct_name;
Vector<Node *> initializer;
ArrayConstructNode() :
Node(TYPE_ARRAY_CONSTRUCT),
datatype(TYPE_VOID) {
}
};
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struct ArrayDeclarationNode : public Node {
DataPrecision precision;
DataType datatype;
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String struct_name;
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bool is_const;
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struct Declaration {
StringName name;
uint32_t size;
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Vector<Node *> initializer;
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};
Vector<Declaration> declarations;
virtual DataType get_datatype() const { return datatype; }
ArrayDeclarationNode() :
Node(TYPE_ARRAY_DECLARATION),
precision(PRECISION_DEFAULT),
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datatype(TYPE_VOID),
is_const(false) {}
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};
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struct ConstantNode : public Node {
DataType datatype;
union Value {
bool boolean;
float real;
int32_t sint;
uint32_t uint;
};
Vector<Value> values;
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virtual DataType get_datatype() const { return datatype; }
ConstantNode() :
Node(TYPE_CONSTANT),
datatype(TYPE_VOID) {}
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};
struct FunctionNode;
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struct BlockNode : public Node {
FunctionNode *parent_function;
BlockNode *parent_block;
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enum BlockType {
BLOCK_TYPE_STANDART,
BLOCK_TYPE_FOR,
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BLOCK_TYPE_SWITCH,
BLOCK_TYPE_CASE,
BLOCK_TYPE_DEFAULT,
};
int block_type;
SubClassTag block_tag;
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struct Variable {
DataType type;
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StringName struct_name;
DataPrecision precision;
int line; //for completion
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int array_size;
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bool is_const;
};
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Map<StringName, Variable> variables;
List<Node *> statements;
bool single_statement;
BlockNode() :
Node(TYPE_BLOCK),
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parent_function(nullptr),
parent_block(nullptr),
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block_type(BLOCK_TYPE_STANDART),
block_tag(SubClassTag::TAG_GLOBAL),
single_statement(false) {}
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};
struct ControlFlowNode : public Node {
FlowOperation flow_op;
Vector<Node *> expressions;
Vector<BlockNode *> blocks;
ControlFlowNode() :
Node(TYPE_CONTROL_FLOW),
flow_op(FLOW_OP_IF) {}
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};
struct MemberNode : public Node {
DataType basetype;
bool basetype_const;
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StringName base_struct_name;
DataPrecision precision;
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DataType datatype;
int array_size;
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StringName struct_name;
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StringName name;
Node *owner;
Node *index_expression;
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bool has_swizzling_duplicates;
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virtual DataType get_datatype() const { return datatype; }
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virtual String get_datatype_name() const { return String(struct_name); }
MemberNode() :
Node(TYPE_MEMBER),
basetype(TYPE_VOID),
basetype_const(false),
datatype(TYPE_VOID),
array_size(0),
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owner(nullptr),
index_expression(nullptr),
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has_swizzling_duplicates(false) {}
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};
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struct StructNode : public Node {
List<MemberNode *> members;
StructNode() :
Node(TYPE_STRUCT) {}
};
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struct FunctionNode : public Node {
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struct Argument {
ArgumentQualifier qualifier;
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StringName name;
DataType type;
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StringName type_str;
DataPrecision precision;
//for passing textures as arguments
bool tex_argument_check;
TextureFilter tex_argument_filter;
TextureRepeat tex_argument_repeat;
bool tex_builtin_check;
StringName tex_builtin;
Map<StringName, Set<int>> tex_argument_connect;
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};
StringName name;
DataType return_type;
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StringName return_struct_name;
DataPrecision return_precision;
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Vector<Argument> arguments;
BlockNode *body;
bool can_discard;
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FunctionNode() :
Node(TYPE_FUNCTION),
return_type(TYPE_VOID),
return_precision(PRECISION_DEFAULT),
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body(nullptr),
can_discard(false) {}
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};
struct ShaderNode : public Node {
struct Constant {
DataType type;
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StringName type_str;
DataPrecision precision;
ConstantNode *initializer;
};
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struct Function {
StringName name;
FunctionNode *function;
Set<StringName> uses_function;
bool callable;
};
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struct Struct {
StringName name;
StructNode *shader_struct;
};
struct Varying {
DataType type;
DataInterpolation interpolation;
DataPrecision precision;
int array_size;
Varying() :
type(TYPE_VOID),
interpolation(INTERPOLATION_FLAT),
precision(PRECISION_DEFAULT),
array_size(0) {}
};
struct Uniform {
enum Hint {
HINT_NONE,
HINT_COLOR,
HINT_RANGE,
HINT_ALBEDO,
HINT_BLACK_ALBEDO,
HINT_NORMAL,
HINT_ROUGHNESS_NORMAL,
HINT_ROUGHNESS_R,
HINT_ROUGHNESS_G,
HINT_ROUGHNESS_B,
HINT_ROUGHNESS_A,
HINT_ROUGHNESS_GRAY,
HINT_BLACK,
HINT_WHITE,
HINT_ANISO,
HINT_MAX
};
int order;
int texture_order;
DataType type;
DataPrecision precision;
Vector<ConstantNode::Value> default_value;
Hint hint;
TextureFilter filter;
TextureRepeat repeat;
float hint_range[3];
Uniform() :
order(0),
texture_order(0),
type(TYPE_VOID),
precision(PRECISION_DEFAULT),
hint(HINT_NONE),
filter(FILTER_DEFAULT),
repeat(REPEAT_DEFAULT) {
hint_range[0] = 0.0f;
hint_range[1] = 1.0f;
hint_range[2] = 0.001f;
}
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};
Map<StringName, Constant> constants;
Map<StringName, Varying> varyings;
Map<StringName, Uniform> uniforms;
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Map<StringName, Struct> structs;
Vector<StringName> render_modes;
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Vector<Function> functions;
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Vector<Struct> vstructs;
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ShaderNode() :
Node(TYPE_SHADER) {}
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};
struct Expression {
bool is_op;
union {
Operator op;
Node *node;
};
};
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struct VarInfo {
StringName name;
DataType type;
};
enum CompletionType {
COMPLETION_NONE,
COMPLETION_RENDER_MODE,
COMPLETION_MAIN_FUNCTION,
COMPLETION_IDENTIFIER,
COMPLETION_FUNCTION_CALL,
COMPLETION_CALL_ARGUMENTS,
COMPLETION_INDEX,
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COMPLETION_STRUCT,
};
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struct Token {
TokenType type;
StringName text;
double constant;
uint16_t line;
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};
static String get_operator_text(Operator p_op);
static String get_token_text(Token p_token);
static bool is_token_datatype(TokenType p_type);
static bool is_token_variable_datatype(TokenType p_type);
static DataType get_token_datatype(TokenType p_type);
static bool is_token_interpolation(TokenType p_type);
static DataInterpolation get_token_interpolation(TokenType p_type);
static bool is_token_precision(TokenType p_type);
static DataPrecision get_token_precision(TokenType p_type);
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static String get_precision_name(DataPrecision p_type);
static String get_datatype_name(DataType p_type);
static bool is_token_nonvoid_datatype(TokenType p_type);
static bool is_token_operator(TokenType p_type);
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static bool convert_constant(ConstantNode *p_constant, DataType p_to_type, ConstantNode::Value *p_value = nullptr);
static DataType get_scalar_type(DataType p_type);
static int get_cardinality(DataType p_type);
static bool is_scalar_type(DataType p_type);
static bool is_sampler_type(DataType p_type);
static Variant constant_value_to_variant(const Vector<ShaderLanguage::ConstantNode::Value> &p_value, DataType p_type, ShaderLanguage::ShaderNode::Uniform::Hint p_hint = ShaderLanguage::ShaderNode::Uniform::HINT_NONE);
static PropertyInfo uniform_to_property_info(const ShaderNode::Uniform &p_uniform);
static uint32_t get_type_size(DataType p_type);
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static void get_keyword_list(List<String> *r_keywords);
static void get_builtin_funcs(List<String> *r_keywords);
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struct BuiltInInfo {
DataType type;
bool constant;
BuiltInInfo() :
type(TYPE_VOID),
constant(false) {}
BuiltInInfo(DataType p_type, bool p_constant = false) :
type(p_type),
constant(p_constant) {}
};
struct FunctionInfo {
Map<StringName, BuiltInInfo> built_ins;
bool can_discard;
};
static bool has_builtin(const Map<StringName, ShaderLanguage::FunctionInfo> &p_functions, const StringName &p_name);
private:
struct KeyWord {
TokenType token;
const char *text;
};
static const KeyWord keyword_list[];
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bool error_set;
String error_str;
int error_line;
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String code;
int char_idx;
int tk_line;
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StringName current_function;
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struct TkPos {
int char_idx;
int tk_line;
};
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TkPos _get_tkpos() {
TkPos tkp;
tkp.char_idx = char_idx;
tkp.tk_line = tk_line;
return tkp;
}
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void _set_tkpos(TkPos p_pos) {
char_idx = p_pos.char_idx;
tk_line = p_pos.tk_line;
}
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void _set_error(const String &p_str) {
if (error_set)
return;
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error_line = tk_line;
error_set = true;
error_str = p_str;
}
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static const char *token_names[TK_MAX];
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Token _make_token(TokenType p_type, const StringName &p_text = StringName());
Token _get_token();
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ShaderNode *shader;
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enum IdentifierType {
IDENTIFIER_FUNCTION,
IDENTIFIER_UNIFORM,
IDENTIFIER_VARYING,
IDENTIFIER_FUNCTION_ARGUMENT,
IDENTIFIER_LOCAL_VAR,
IDENTIFIER_BUILTIN_VAR,
IDENTIFIER_CONSTANT,
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};
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bool _find_identifier(const BlockNode *p_block, bool p_allow_reassign, const Map<StringName, BuiltInInfo> &p_builtin_types, const StringName &p_identifier, DataType *r_data_type = nullptr, IdentifierType *r_type = nullptr, bool *r_is_const = nullptr, int *r_array_size = nullptr, StringName *r_struct_name = nullptr);
bool _is_operator_assign(Operator p_op) const;
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bool _validate_assign(Node *p_node, const Map<StringName, BuiltInInfo> &p_builtin_types, String *r_message = nullptr);
bool _validate_operator(OperatorNode *p_op, DataType *r_ret_type = nullptr);
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struct BuiltinFuncDef {
enum { MAX_ARGS = 5 };
const char *name;
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DataType rettype;
const DataType args[MAX_ARGS];
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SubClassTag tag;
bool high_end;
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};
struct BuiltinFuncOutArgs { //arguments used as out in built in functions
const char *name;
int argument;
};
CompletionType completion_type;
int completion_line;
BlockNode *completion_block;
DataType completion_base;
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SubClassTag completion_class;
StringName completion_function;
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StringName completion_struct;
int completion_argument;
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bool _get_completable_identifier(BlockNode *p_block, CompletionType p_type, StringName &identifier);
static const BuiltinFuncDef builtin_func_defs[];
static const BuiltinFuncOutArgs builtin_func_out_args[];
Error _validate_datatype(DataType p_type);
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bool _compare_datatypes_in_nodes(Node *a, Node *b) const;
bool _validate_function_call(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, OperatorNode *p_func, DataType *r_ret_type, StringName *r_ret_type_str);
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bool _parse_function_arguments(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, OperatorNode *p_func, int *r_complete_arg = nullptr);
bool _propagate_function_call_sampler_uniform_settings(StringName p_name, int p_argument, TextureFilter p_filter, TextureRepeat p_repeat);
bool _propagate_function_call_sampler_builtin_reference(StringName p_name, int p_argument, const StringName &p_builtin);
Node *_parse_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types);
ShaderLanguage::Node *_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node);
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Node *_parse_and_reduce_expression(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types);
Error _parse_block(BlockNode *p_block, const Map<StringName, BuiltInInfo> &p_builtin_types, bool p_just_one = false, bool p_can_break = false, bool p_can_continue = false);
String _get_shader_type_list(const Set<String> &p_shader_types) const;
String _get_qualifier_str(ArgumentQualifier p_qualifier) const;
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Error _parse_shader(const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types);
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Error _find_last_flow_op_in_block(BlockNode *p_block, FlowOperation p_op);
Error _find_last_flow_op_in_op(ControlFlowNode *p_flow, FlowOperation p_op);
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public:
//static void get_keyword_list(ShaderType p_type,List<String> *p_keywords);
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void clear();
static String get_shader_type(const String &p_code);
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Error compile(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types);
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Error complete(const String &p_code, const Map<StringName, FunctionInfo> &p_functions, const Vector<StringName> &p_render_modes, const Set<String> &p_shader_types, List<ScriptCodeCompletionOption> *r_options, String &r_call_hint);
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String get_error_text();
int get_error_line();
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ShaderNode *get_shader();
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String token_debug(const String &p_code);
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ShaderLanguage();
~ShaderLanguage();
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};
#endif // SHADER_LANGUAGE_H