virtualx-engine/servers/visual/shader_language.cpp
Rémi Verschelde 3f3f5a5359 Merge remote-tracking branch 'origin/gles3' into gles3-on-master
Various merge conflicts have been fixed manually and some mistakes
might have been made - time will tell :)
2017-01-02 21:52:26 +01:00

3904 lines
102 KiB
C++

/*************************************************************************/
/* shader_language.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* 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. */
/*************************************************************************/
#include "shader_language.h"
#include "print_string.h"
#include "os/os.h"
static bool _is_text_char(CharType c) {
return (c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9') || c=='_';
}
static bool _is_number(CharType c) {
return (c>='0' && c<='9');
}
static bool _is_hex(CharType c) {
return (c>='0' && c<='9') || (c>='a' && c<='f') || (c>='A' && c<='F');
}
String ShaderLanguage::get_operator_text(Operator p_op) {
static const char* op_names[OP_MAX]={"==",
"!=",
"<",
"<=",
">",
">=",
"&&",
"||",
"!",
"-",
"+",
"-",
"*",
"/",
"%",
"<<",
">>",
"=",
"+=",
"-=",
"*=",
"/=",
"%=",
"<<=",
">>=",
"&=",
"|=",
"^=",
"&",
"|",
"^",
"~",
"++"
"--",
"()",
"construct"};
return op_names[p_op];
}
const char * ShaderLanguage::token_names[TK_MAX]={
"EMPTY",
"IDENTIFIER",
"TRUE",
"FALSE",
"REAL_CONSTANT",
"INT_CONSTANT",
"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",
"TYPE_FLOAT",
"TYPE_VEC2",
"TYPE_VEC3",
"TYPE_VEC4",
"TYPE_MAT2",
"TYPE_MAT3",
"TYPE_MAT4",
"TYPE_SAMPLER2D",
"TYPE_ISAMPLER2D",
"TYPE_USAMPLER2D",
"TYPE_SAMPLERCUBE",
"PRECISION_LOW",
"PRECISION_MID",
"PRECISION_HIGH",
"OP_EQUAL",
"OP_NOT_EQUAL",
"OP_LESS",
"OP_LESS_EQUAL",
"OP_GREATER",
"OP_GREATER_EQUAL",
"OP_AND",
"OP_OR",
"OP_NOT",
"OP_ADD",
"OP_SUB",
"OP_MUL",
"OP_DIV",
"OP_MOD",
"OP_SHIFT_LEFT",
"OP_SHIFT_RIGHT",
"OP_ASSIGN",
"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",
"CF_IF",
"CF_ELSE",
"CF_FOR",
"CF_WHILE",
"CF_DO",
"CF_SWITCH",
"CF_CASE",
"CF_BREAK",
"CF_CONTINUE",
"CF_RETURN",
"BRACKET_OPEN",
"BRACKET_CLOSE",
"CURLY_BRACKET_OPEN",
"CURLY_BRACKET_CLOSE",
"PARENTHESIS_OPEN",
"PARENTHESIS_CLOSE",
"QUESTION",
"COMMA",
"COLON",
"SEMICOLON",
"PERIOD",
"UNIFORM",
"VARYING",
"RENDER_MODE",
"HINT_WHITE_TEXTURE",
"HINT_BLACK_TEXTURE",
"HINT_NORMAL_TEXTURE",
"HINT_ANISO_TEXTURE",
"HINT_ALBEDO_TEXTURE",
"HINT_BLACK_ALBEDO_TEXTURE",
"HINT_COLOR",
"HINT_RANGE",
"CURSOR",
"ERROR",
"EOF",
};
String ShaderLanguage::get_token_text(Token p_token) {
String name=token_names[p_token.type];
if (p_token.type==TK_INT_CONSTANT || p_token.type==TK_REAL_CONSTANT) {
name+="("+rtos(p_token.constant)+")";
} else if (p_token.type==TK_IDENTIFIER) {
name+="("+String(p_token.text)+")";
} else if (p_token.type==TK_ERROR) {
name+="("+String(p_token.text)+")";
}
return name;
}
ShaderLanguage::Token ShaderLanguage::_make_token(TokenType p_type,const StringName& p_text) {
Token tk;
tk.type=p_type;
tk.text=p_text;
tk.line=tk_line;
if (tk.type==TK_ERROR) {
_set_error(p_text);
}
return tk;
}
const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[]={
{TK_TRUE,"true"},
{TK_FALSE,"false"},
{TK_TYPE_VOID,"void"},
{TK_TYPE_BOOL,"bool"},
{TK_TYPE_BVEC2,"bvec2"},
{TK_TYPE_BVEC3,"bvec3"},
{TK_TYPE_BVEC4,"bvec4"},
{TK_TYPE_INT,"int"},
{TK_TYPE_IVEC2,"ivec2"},
{TK_TYPE_IVEC3,"ivec3"},
{TK_TYPE_IVEC4,"ivec4"},
{TK_TYPE_UINT,"uint"},
{TK_TYPE_UVEC2,"uvec2"},
{TK_TYPE_UVEC3,"uvec3"},
{TK_TYPE_UVEC4,"uvec4"},
{TK_TYPE_FLOAT,"float"},
{TK_TYPE_VEC2,"vec2"},
{TK_TYPE_VEC3,"vec3"},
{TK_TYPE_VEC4,"vec4"},
{TK_TYPE_MAT2,"mat2"},
{TK_TYPE_MAT3,"mat3"},
{TK_TYPE_MAT4,"mat4"},
{TK_TYPE_SAMPLER2D,"sampler2D"},
{TK_TYPE_ISAMPLER2D,"isampler2D"},
{TK_TYPE_USAMPLER2D,"usampler2D"},
{TK_TYPE_SAMPLERCUBE,"samplerCube"},
{TK_PRECISION_LOW,"lowp"},
{TK_PRECISION_MID,"mediump"},
{TK_PRECISION_HIGH,"highp"},
{TK_CF_IF,"if"},
{TK_CF_ELSE,"else"},
{TK_CF_FOR,"for"},
{TK_CF_WHILE,"while"},
{TK_CF_DO,"do"},
{TK_CF_SWITCH,"switch"},
{TK_CF_CASE,"case"},
{TK_CF_BREAK,"break"},
{TK_CF_CONTINUE,"continue"},
{TK_CF_RETURN,"return"},
{TK_UNIFORM,"uniform"},
{TK_VARYING,"varying"},
{TK_RENDER_MODE,"render_mode"},
{TK_HINT_WHITE_TEXTURE,"hint_white"},
{TK_HINT_BLACK_TEXTURE,"hint_black"},
{TK_HINT_NORMAL_TEXTURE,"hint_normal"},
{TK_HINT_ANISO_TEXTURE,"hint_aniso"},
{TK_HINT_ALBEDO_TEXTURE,"hint_albedo"},
{TK_HINT_BLACK_ALBEDO_TEXTURE,"hint_black_albedo"},
{TK_HINT_COLOR,"hint_color"},
{TK_HINT_RANGE,"hint_range"},
{TK_ERROR,NULL}
};
ShaderLanguage::Token ShaderLanguage::_get_token() {
#define GETCHAR(m_idx) (((char_idx+m_idx)<code.length())?code[char_idx+m_idx]:CharType(0))
while(true) {
char_idx++;
switch(GETCHAR(-1)) {
case 0:
return _make_token(TK_EOF);
case 0xFFFF:
return _make_token(TK_CURSOR); //for completion
case '\t':
case '\r':
case ' ':
continue;
case '\n':
tk_line++;
continue;
case '/': {
switch(GETCHAR(0)) {
case '*': { // block comment
char_idx++;
while(true) {
if (GETCHAR(0)==0) {
return _make_token(TK_EOF);
} if (GETCHAR(0)=='*' && GETCHAR(1)=='/') {
char_idx+=2;
break;
} if (GETCHAR(0)=='\n') {
tk_line++;
}
char_idx++;
}
} break;
case '/': { // line comment skip
while(true) {
if (GETCHAR(0)=='\n') {
char_idx++;
break;
}
if (GETCHAR(0)==0) {
return _make_token(TK_EOF);
}
char_idx++;
}
} break;
case '=': { // diveq
char_idx++;
return _make_token(TK_OP_ASSIGN_DIV);
} break;
default:
return _make_token(TK_OP_DIV);
}
continue; //a comment, continue to next token
} break;
case '=': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_EQUAL);
}
return _make_token(TK_OP_ASSIGN);
} break;
case '<': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_LESS_EQUAL);
} else if (GETCHAR(0)=='<') {
char_idx++;
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_LEFT);
}
return _make_token(TK_OP_SHIFT_LEFT);
}
return _make_token(TK_OP_LESS);
} break;
case '>': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_GREATER_EQUAL);
} else if (GETCHAR(0)=='<') {
char_idx++;;
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SHIFT_RIGHT);
}
return _make_token(TK_OP_SHIFT_RIGHT);
}
return _make_token(TK_OP_GREATER);
} break;
case '!': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_NOT_EQUAL);
}
return _make_token(TK_OP_NOT);
} break;
//case '"' //string - no strings in shader
//case '\'' //string - no strings in shader
case '{':
return _make_token(TK_CURLY_BRACKET_OPEN);
case '}':
return _make_token(TK_CURLY_BRACKET_CLOSE);
case '[':
return _make_token(TK_BRACKET_OPEN);
case ']':
return _make_token(TK_BRACKET_CLOSE);
case '(':
return _make_token(TK_PARENTHESIS_OPEN);
case ')':
return _make_token(TK_PARENTHESIS_CLOSE);
case ',':
return _make_token(TK_COMMA);
case ';':
return _make_token(TK_SEMICOLON);
case '?':
return _make_token(TK_QUESTION);
case ':':
return _make_token(TK_COLON);
case '^':
return _make_token(TK_OP_BIT_XOR);
case '~':
return _make_token(TK_OP_BIT_INVERT);
case '&': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_AND);
} else if (GETCHAR(0)=='&') {
char_idx++;
return _make_token(TK_OP_AND);
}
return _make_token(TK_OP_BIT_AND);
} break;
case '|': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_BIT_OR);
} else if (GETCHAR(0)=='|') {
char_idx++;
return _make_token(TK_OP_OR);
}
return _make_token(TK_OP_BIT_OR);
} break;
case '*': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MUL);
}
return _make_token(TK_OP_MUL);
} break;
case '+': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_ADD);
} else if (GETCHAR(0)=='+') {
char_idx++;
return _make_token(TK_OP_INCREMENT);
}
return _make_token(TK_OP_ADD);
} break;
case '-': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_SUB);
}else if (GETCHAR(0)=='-') {
char_idx++;
return _make_token(TK_OP_DECREMENT);
}
return _make_token(TK_OP_SUB);
} break;
case '%': {
if (GETCHAR(0)=='=') {
char_idx++;
return _make_token(TK_OP_ASSIGN_MOD);
}
return _make_token(TK_OP_MOD);
} break;
default: {
char_idx--; //go back one, since we have no idea what this is
if (_is_number(GETCHAR(0)) || (GETCHAR(0)=='.' && _is_number(GETCHAR(1)))) {
// parse number
bool period_found=false;
bool exponent_found=false;
bool hexa_found=false;
bool sign_found=false;
bool minus_exponent_found=false;
String str;
int i=0;
while(true) {
if (GETCHAR(i)=='.') {
if (period_found || exponent_found)
return _make_token(TK_ERROR,"Invalid numeric constant");
period_found=true;
} else if (GETCHAR(i)=='x') {
if (hexa_found || str.length()!=1 || str[0]!='0')
return _make_token(TK_ERROR,"Invalid numeric constant");
hexa_found=true;
} else if (GETCHAR(i)=='e') {
if (hexa_found || exponent_found)
return _make_token(TK_ERROR,"Invalid numeric constant");
exponent_found=true;
} else if (_is_number(GETCHAR(i))) {
//all ok
} else if (hexa_found && _is_hex(GETCHAR(i))) {
} else if ((GETCHAR(i)=='-' || GETCHAR(i)=='+') && exponent_found) {
if (sign_found)
return _make_token(TK_ERROR,"Invalid numeric constant");
sign_found=true;
if (GETCHAR(i)=='-')
minus_exponent_found=true;
} else
break;
str+=CharType(GETCHAR(i));
i++;
}
if (!_is_number(str[str.length()-1]))
return _make_token(TK_ERROR,"Invalid numeric constant");
char_idx+=str.length();
Token tk;
if (period_found || minus_exponent_found)
tk.type=TK_REAL_CONSTANT;
else
tk.type=TK_INT_CONSTANT;
if (!str.is_valid_float()) {
return _make_token(TK_ERROR,"Invalid numeric constant");
}
tk.constant=str.to_double();
tk.line=tk_line;
return tk;
}
if (GETCHAR(0)=='.') {
//parse period
char_idx++;
return _make_token(TK_PERIOD);
}
if (_is_text_char(GETCHAR(0))) {
// parse identifier
String str;
while(_is_text_char(GETCHAR(0))) {
str+=CharType(GETCHAR(0));
char_idx++;
}
//see if keyword
//should be converted to a static map
int idx=0;
while(keyword_list[idx].text) {
if (str==keyword_list[idx].text) {
return _make_token(keyword_list[idx].token);
}
idx++;
}
return _make_token(TK_IDENTIFIER,str);
}
if (GETCHAR(0)>32)
return _make_token(TK_ERROR,"Tokenizer: Unknown character #"+itos(GETCHAR(0))+": '"+String::chr(GETCHAR(0))+"'");
else
return _make_token(TK_ERROR,"Tokenizer: Unknown character #"+itos(GETCHAR(0)));
} break;
}
}
ERR_PRINT("BUG");
return Token();
}
String ShaderLanguage::token_debug(const String& p_code) {
clear();
code=p_code;
String output;
Token tk = _get_token();
while(tk.type!=TK_EOF && tk.type!=TK_ERROR) {
output+=itos(tk_line)+": "+get_token_text(tk)+"\n";
tk = _get_token();
}
return output;
}
bool ShaderLanguage::is_token_datatype(TokenType p_type) {
return (
p_type==TK_TYPE_VOID ||
p_type==TK_TYPE_BOOL ||
p_type==TK_TYPE_BVEC2 ||
p_type==TK_TYPE_BVEC3 ||
p_type==TK_TYPE_BVEC4 ||
p_type==TK_TYPE_INT ||
p_type==TK_TYPE_IVEC2 ||
p_type==TK_TYPE_IVEC3 ||
p_type==TK_TYPE_IVEC4 ||
p_type==TK_TYPE_UINT ||
p_type==TK_TYPE_UVEC2 ||
p_type==TK_TYPE_UVEC3 ||
p_type==TK_TYPE_UVEC4 ||
p_type==TK_TYPE_FLOAT ||
p_type==TK_TYPE_VEC2 ||
p_type==TK_TYPE_VEC3 ||
p_type==TK_TYPE_VEC4 ||
p_type==TK_TYPE_MAT2 ||
p_type==TK_TYPE_MAT3 ||
p_type==TK_TYPE_MAT4 ||
p_type==TK_TYPE_SAMPLER2D ||
p_type==TK_TYPE_ISAMPLER2D ||
p_type==TK_TYPE_USAMPLER2D ||
p_type==TK_TYPE_SAMPLERCUBE );
}
ShaderLanguage::DataType ShaderLanguage::get_token_datatype(TokenType p_type) {
return DataType(p_type-TK_TYPE_VOID);
}
bool ShaderLanguage::is_token_precision(TokenType p_type) {
return (
p_type==TK_PRECISION_LOW ||
p_type==TK_PRECISION_MID ||
p_type==TK_PRECISION_HIGH );
}
ShaderLanguage::DataPrecision ShaderLanguage::get_token_precision(TokenType p_type) {
if (p_type==TK_PRECISION_LOW)
return PRECISION_LOWP;
else if (p_type==TK_PRECISION_HIGH)
return PRECISION_HIGHP;
else
return PRECISION_MEDIUMP;
}
String ShaderLanguage::get_datatype_name(DataType p_type) {
switch(p_type) {
case TYPE_VOID: return "void";
case TYPE_BOOL: return "bool";
case TYPE_BVEC2: return "bvec2";
case TYPE_BVEC3: return "bvec3";
case TYPE_BVEC4: return "bvec4";
case TYPE_INT: return "int";
case TYPE_IVEC2: return "ivec2";
case TYPE_IVEC3: return "ivec3";
case TYPE_IVEC4: return "ivec4";
case TYPE_UINT: return "uint";
case TYPE_UVEC2: return "uvec2";
case TYPE_UVEC3: return "uvec3";
case TYPE_UVEC4: return "uvec4";
case TYPE_FLOAT: return "float";
case TYPE_VEC2: return "vec2";
case TYPE_VEC3: return "vec3";
case TYPE_VEC4: return "vec4";
case TYPE_MAT2: return "mat2";
case TYPE_MAT3: return "mat3";
case TYPE_MAT4: return "mat4";
case TYPE_SAMPLER2D: return "sampler2D";
case TYPE_ISAMPLER2D: return "isampler2D";
case TYPE_USAMPLER2D: return "usampler2D";
case TYPE_SAMPLERCUBE: return "samplerCube";
}
return "";
}
bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) {
return is_token_datatype(p_type) && p_type!=TK_TYPE_VOID;
}
void ShaderLanguage::clear() {
current_function=StringName();
completion_type=COMPLETION_NONE;
completion_block=NULL;
completion_function=StringName();
error_line=0;
tk_line=1;
char_idx=0;
error_set=false;
error_str="";
while(nodes) {
Node *n = nodes;
nodes=nodes->next;
memdelete(n);
}
}
bool ShaderLanguage::_find_identifier(const BlockNode* p_block,const Map<StringName, DataType> &p_builtin_types,const StringName& p_identifier, DataType *r_data_type, IdentifierType *r_type) {
if (p_builtin_types.has(p_identifier)) {
if (r_data_type) {
*r_data_type=p_builtin_types[p_identifier];
}
if (r_type) {
*r_type=IDENTIFIER_BUILTIN_VAR;
}
return true;
}
FunctionNode *function=NULL;
while(p_block) {
if (p_block->variables.has(p_identifier)) {
if (r_data_type) {
*r_data_type=p_block->variables[p_identifier].type;
}
if (r_type) {
*r_type=IDENTIFIER_LOCAL_VAR;
}
return true;
}
if (p_block->parent_function) {
function=p_block->parent_function;
break;
} else {
ERR_FAIL_COND_V(!p_block->parent_block,false);
p_block=p_block->parent_block;
}
}
if (function) {
for(int i=0;i<function->arguments.size();i++) {
if (function->arguments[i].name==p_identifier) {
if (r_data_type) {
*r_data_type=function->arguments[i].type;
}
if (r_type) {
*r_type=IDENTIFIER_FUNCTION_ARGUMENT;
}
return true;
}
}
}
if (shader->varyings.has(p_identifier)) {
if (r_data_type) {
*r_data_type=shader->varyings[p_identifier].type;
}
if (r_type) {
*r_type=IDENTIFIER_VARYING;
}
return true;
}
if (shader->uniforms.has(p_identifier)) {
if (r_data_type) {
*r_data_type=shader->uniforms[p_identifier].type;
}
if (r_type) {
*r_type=IDENTIFIER_UNIFORM;
}
return true;
}
for(int i=0;i<shader->functions.size();i++) {
if (!shader->functions[i].callable)
continue;
if (shader->functions[i].name==p_identifier) {
if (r_data_type) {
*r_data_type=shader->functions[i].function->return_type;
}
if (r_type) {
*r_type=IDENTIFIER_FUNCTION;
}
}
}
return false;
}
bool ShaderLanguage::_validate_operator(OperatorNode *p_op,DataType *r_ret_type) {
bool valid=false;
DataType ret_type;
switch(p_op->op) {
case OP_EQUAL:
case OP_NOT_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid=na==nb;
ret_type=TYPE_BOOL;
} break;
case OP_LESS:
case OP_LESS_EQUAL:
case OP_GREATER:
case OP_GREATER_EQUAL: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na==nb && (na==TYPE_UINT || na==TYPE_INT || na==TYPE_FLOAT);
ret_type=TYPE_BOOL;
} break;
case OP_AND:
case OP_OR: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid = na==nb && na==TYPE_BOOL;
ret_type=TYPE_BOOL;
} break;
case OP_NOT: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na==TYPE_BOOL;
ret_type=TYPE_BOOL;
} break;
case OP_INCREMENT:
case OP_DECREMENT:
case OP_POST_INCREMENT:
case OP_POST_DECREMENT:
case OP_NEGATE: {
DataType na = p_op->arguments[0]->get_datatype();
valid = na>TYPE_BOOL && na<TYPE_MAT2;
ret_type=na;
} break;
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na>nb) {
//make things easier;
SWAP(na,nb);
}
if (na==nb) {
valid = (na>TYPE_BOOL && na<TYPE_MAT2) || (p_op->op==OP_MUL && na>=TYPE_MAT2 && na<=TYPE_MAT4);
ret_type=na;
} else if (na==TYPE_INT && nb==TYPE_IVEC2) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_INT && nb==TYPE_IVEC3) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_INT && nb==TYPE_IVEC4) {
valid=true;
ret_type=TYPE_IVEC4;
} else if (na==TYPE_UINT && nb==TYPE_UVEC2) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UINT && nb==TYPE_UVEC3) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UINT && nb==TYPE_UVEC4) {
valid=true;
ret_type=TYPE_UVEC4;
} else if (na==TYPE_FLOAT && nb==TYPE_VEC2) {
valid=true;
ret_type=TYPE_VEC2;
} else if (na==TYPE_FLOAT && nb==TYPE_VEC3) {
valid=true;
ret_type=TYPE_VEC3;
} else if (na==TYPE_FLOAT && nb==TYPE_VEC4) {
valid=true;
ret_type=TYPE_VEC4;
} else if (p_op->op==OP_MUL && na==TYPE_VEC2 && nb==TYPE_MAT2) {
valid=true;
ret_type=TYPE_MAT2;
} else if (p_op->op==OP_MUL && na==TYPE_VEC3 && nb==TYPE_MAT3) {
valid=true;
ret_type=TYPE_MAT3;
} else if (p_op->op==OP_MUL && na==TYPE_VEC4 && nb==TYPE_MAT4) {
valid=true;
ret_type=TYPE_MAT4;
}
} break;
case OP_ASSIGN_MOD:
case OP_MOD: {
/*
* The operator modulus (%) operates on signed or unsigned integers or integer vectors. The operand
* types must both be signed or both be unsigned. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other vector, then the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. If both are vectors of the same size, the result is computed
* component-wise.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na==TYPE_INT && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_INT;
} else if (na==TYPE_IVEC2 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC4;
} else if (na==TYPE_IVEC2 && nb==TYPE_IVEC2) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_IVEC3) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_IVEC4) {
valid=true;
ret_type=TYPE_IVEC4;
/////
} else if (na==TYPE_UINT && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UINT;
} else if (na==TYPE_UVEC2 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UVEC3 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UVEC4 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC4;
} else if (na==TYPE_UVEC2 && nb==TYPE_UVEC2) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UVEC3 && nb==TYPE_UVEC3) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UVEC4 && nb==TYPE_UVEC4) {
valid=true;
ret_type=TYPE_UVEC4;
}
} break;
case OP_ASSIGN_SHIFT_LEFT:
case OP_ASSIGN_SHIFT_RIGHT:
case OP_SHIFT_LEFT:
case OP_SHIFT_RIGHT: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na>=TYPE_UINT && na<=TYPE_UVEC4) {
na=DataType(na-4);
}
if (nb>=TYPE_UINT && nb<=TYPE_UVEC4) {
nb=DataType(nb-4);
}
if (na==TYPE_INT && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_INT;
} else if (na==TYPE_IVEC2 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC4;
} else if (na==TYPE_IVEC2 && nb==TYPE_IVEC2) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_IVEC3) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_IVEC4) {
valid=true;
ret_type=TYPE_IVEC4;
}
} break;
case OP_ASSIGN: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
valid=na==nb;
ret_type=na;
} break;
case OP_ASSIGN_ADD:
case OP_ASSIGN_SUB:
case OP_ASSIGN_MUL:
case OP_ASSIGN_DIV: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na==nb) {
valid = (na>TYPE_BOOL && na<TYPE_MAT2) || (p_op->op==OP_ASSIGN_MUL && na>=TYPE_MAT2 && na<=TYPE_MAT4);
ret_type=na;
} else if (na==TYPE_IVEC2 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_INT ) {
valid=true;
ret_type=TYPE_IVEC4;
} else if (na==TYPE_UVEC2 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UVEC3 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UVEC4 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC4;
} else if (na==TYPE_VEC2 && nb==TYPE_FLOAT ) {
valid=true;
ret_type=TYPE_VEC2;
} else if (na==TYPE_VEC3 && nb==TYPE_FLOAT) {
valid=true;
ret_type=TYPE_VEC3;
} else if (na==TYPE_VEC4 && nb==TYPE_FLOAT) {
valid=true;
ret_type=TYPE_VEC4;
} else if (p_op->op==OP_ASSIGN_MUL && na==TYPE_MAT2 && nb==TYPE_VEC2) {
valid=true;
ret_type=TYPE_MAT2;
} else if (p_op->op==OP_ASSIGN_MUL && na==TYPE_MAT3 && nb==TYPE_VEC3) {
valid=true;
ret_type=TYPE_MAT3;
} else if (p_op->op==OP_ASSIGN_MUL && na==TYPE_MAT4 && nb==TYPE_VEC4) {
valid=true;
ret_type=TYPE_MAT4;
}
} break;
case OP_ASSIGN_BIT_AND:
case OP_ASSIGN_BIT_OR:
case OP_ASSIGN_BIT_XOR:
case OP_BIT_AND:
case OP_BIT_OR:
case OP_BIT_XOR: {
/*
* The bitwise operators and (&), exclusive-or (^), and inclusive-or (|). The operands must be of type
* signed or unsigned integers or integer vectors. The operands cannot be vectors of differing size. If
* one operand is a scalar and the other a vector, the scalar is applied component-wise to the vector,
* resulting in the same type as the vector. The fundamental types of the operands (signed or unsigned)
* must match.
*/
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
if (na>nb && p_op->op>=OP_BIT_AND) {
//can swap for non assign
SWAP(na,nb);
}
if (na==TYPE_INT && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_INT;
} else if (na==TYPE_IVEC2 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_INT) {
valid=true;
ret_type=TYPE_IVEC4;
} else if (na==TYPE_IVEC2 && nb==TYPE_IVEC2) {
valid=true;
ret_type=TYPE_IVEC2;
} else if (na==TYPE_IVEC3 && nb==TYPE_IVEC3) {
valid=true;
ret_type=TYPE_IVEC3;
} else if (na==TYPE_IVEC4 && nb==TYPE_IVEC4) {
valid=true;
ret_type=TYPE_IVEC4;
/////
} else if (na==TYPE_UINT && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UINT;
} else if (na==TYPE_UVEC2 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UVEC3 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UVEC4 && nb==TYPE_UINT) {
valid=true;
ret_type=TYPE_UVEC4;
} else if (na==TYPE_UVEC2 && nb==TYPE_UVEC2) {
valid=true;
ret_type=TYPE_UVEC2;
} else if (na==TYPE_UVEC3 && nb==TYPE_UVEC3) {
valid=true;
ret_type=TYPE_UVEC3;
} else if (na==TYPE_UVEC4 && nb==TYPE_UVEC4) {
valid=true;
ret_type=TYPE_UVEC4;
}
} break;
case OP_BIT_INVERT: { //unaries
DataType na = p_op->arguments[0]->get_datatype();
valid = na>=TYPE_INT && na<TYPE_FLOAT;
ret_type=na;
} break;
case OP_SELECT_IF: {
DataType na = p_op->arguments[0]->get_datatype();
DataType nb = p_op->arguments[1]->get_datatype();
DataType nc = p_op->arguments[2]->get_datatype();
valid = na==TYPE_BOOL && (nb==nc);
ret_type=nb;
} break;
default: {
ERR_FAIL_V(false);
}
}
if (r_ret_type)
*r_ret_type=ret_type;
return valid;
}
const ShaderLanguage::BuiltinFuncDef ShaderLanguage::builtin_func_defs[]={
//constructors
{"bool",TYPE_BOOL,{TYPE_BOOL,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_BOOL,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_BOOL,TYPE_BOOL,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_BOOL,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_BOOL,TYPE_BOOL,TYPE_BOOL,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_BVEC2,TYPE_BOOL,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_BOOL,TYPE_BVEC2,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BOOL,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BOOL,TYPE_BOOL,TYPE_BOOL,TYPE_BOOL,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BOOL,TYPE_BVEC2,TYPE_BOOL,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BVEC2,TYPE_BOOL,TYPE_BOOL,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BOOL,TYPE_BOOL,TYPE_BVEC2,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BOOL,TYPE_BVEC3,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BVEC3,TYPE_BOOL,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BVEC2,TYPE_BVEC2,TYPE_VOID}},
{"float",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_FLOAT,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_FLOAT,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_FLOAT,TYPE_VEC2,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_FLOAT,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_FLOAT,TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_VEC2,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VEC2,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_FLOAT,TYPE_VEC3,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"int",TYPE_INT,{TYPE_INT,TYPE_VOID}},
{"ivec2",TYPE_IVEC2,{TYPE_INT,TYPE_VOID}},
{"ivec2",TYPE_IVEC2,{TYPE_INT,TYPE_INT,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_INT,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_INT,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_IVEC2,TYPE_INT,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_INT,TYPE_IVEC2,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_INT,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_INT,TYPE_INT,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_INT,TYPE_IVEC2,TYPE_INT,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_IVEC2,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_INT,TYPE_INT,TYPE_IVEC2,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_INT,TYPE_IVEC3,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_IVEC3,TYPE_INT,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"uint",TYPE_UINT,{TYPE_UINT,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_UINT,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_UINT,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_UINT,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_UVEC2,TYPE_UINT,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_UINT,TYPE_UVEC2,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UINT,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UINT,TYPE_UINT,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UINT,TYPE_UVEC2,TYPE_UINT,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UVEC2,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UINT,TYPE_UINT,TYPE_UVEC2,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UINT,TYPE_UVEC3,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UVEC3,TYPE_UINT,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"mat2",TYPE_MAT2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"mat3",TYPE_MAT3,{TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"mat4",TYPE_MAT4,{TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"mat2",TYPE_MAT2,{TYPE_FLOAT,TYPE_VOID}},
{"mat3",TYPE_MAT3,{TYPE_FLOAT,TYPE_VOID}},
{"mat4",TYPE_MAT4,{TYPE_FLOAT,TYPE_VOID}},
//conversion scalars
{"int",TYPE_INT,{TYPE_BOOL,TYPE_VOID}},
{"int",TYPE_INT,{TYPE_INT,TYPE_VOID}},
{"int",TYPE_INT,{TYPE_UINT,TYPE_VOID}},
{"int",TYPE_INT,{TYPE_FLOAT,TYPE_VOID}},
{"float",TYPE_FLOAT,{TYPE_BOOL,TYPE_VOID}},
{"float",TYPE_FLOAT,{TYPE_INT,TYPE_VOID}},
{"float",TYPE_FLOAT,{TYPE_UINT,TYPE_VOID}},
{"float",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"uint",TYPE_UINT,{TYPE_BOOL,TYPE_VOID}},
{"uint",TYPE_UINT,{TYPE_INT,TYPE_VOID}},
{"uint",TYPE_UINT,{TYPE_UINT,TYPE_VOID}},
{"uint",TYPE_UINT,{TYPE_FLOAT,TYPE_VOID}},
{"bool",TYPE_BOOL,{TYPE_BOOL,TYPE_VOID}},
{"bool",TYPE_BOOL,{TYPE_INT,TYPE_VOID}},
{"bool",TYPE_BOOL,{TYPE_UINT,TYPE_VOID}},
{"bool",TYPE_BOOL,{TYPE_FLOAT,TYPE_VOID}},
//conversion vectors
{"ivec2",TYPE_IVEC2,{TYPE_BVEC2,TYPE_VOID}},
{"ivec2",TYPE_IVEC2,{TYPE_IVEC2,TYPE_VOID}},
{"ivec2",TYPE_IVEC2,{TYPE_UVEC2,TYPE_VOID}},
{"ivec2",TYPE_IVEC2,{TYPE_VEC2,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_BVEC2,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_IVEC2,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_UVEC2,TYPE_VOID}},
{"vec2",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_BVEC2,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_IVEC2,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_UVEC2,TYPE_VOID}},
{"uvec2",TYPE_UVEC2,{TYPE_VEC2,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_BVEC2,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_IVEC2,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_UVEC2,TYPE_VOID}},
{"bvec2",TYPE_BVEC2,{TYPE_VEC2,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_BVEC3,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_IVEC3,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_UVEC3,TYPE_VOID}},
{"ivec3",TYPE_IVEC3,{TYPE_VEC3,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_BVEC3,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_IVEC3,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_UVEC3,TYPE_VOID}},
{"vec3",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_BVEC3,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_IVEC3,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_UVEC3,TYPE_VOID}},
{"uvec3",TYPE_UVEC3,{TYPE_VEC3,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_BVEC3,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_IVEC3,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_UVEC3,TYPE_VOID}},
{"bvec3",TYPE_BVEC3,{TYPE_VEC3,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_BVEC4,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_IVEC4,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_UVEC4,TYPE_VOID}},
{"ivec4",TYPE_IVEC4,{TYPE_VEC4,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_BVEC4,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_IVEC4,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_UVEC4,TYPE_VOID}},
{"vec4",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_BVEC4,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_IVEC4,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_UVEC4,TYPE_VOID}},
{"uvec4",TYPE_UVEC4,{TYPE_VEC4,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_BVEC4,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_IVEC4,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_UVEC4,TYPE_VOID}},
{"bvec4",TYPE_BVEC4,{TYPE_VEC4,TYPE_VOID}},
//builtins - trigonometry
{"sin",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"cos",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"tan",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"asin",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"acos",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"atan",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"atan2",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"sinh",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"cosh",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"tanh",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
//builtins - exponential
{"pow",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"pow",TYPE_VEC2,{TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"pow",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"pow",TYPE_VEC3,{TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"pow",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"pow",TYPE_VEC4,{TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"pow",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"exp",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"exp",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"exp",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"exp",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"log",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"log",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"log",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"log",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"sqrt",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"sqrt",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"sqrt",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"sqrt",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
//builtins - common
{"abs",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"abs",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"abs",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"abs",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"abs",TYPE_INT,{TYPE_INT,TYPE_VOID}},
{"abs",TYPE_IVEC2,{TYPE_IVEC2,TYPE_VOID}},
{"abs",TYPE_IVEC3,{TYPE_IVEC3,TYPE_VOID}},
{"abs",TYPE_IVEC4,{TYPE_IVEC4,TYPE_VOID}},
{"abs",TYPE_UINT,{TYPE_UINT,TYPE_VOID}},
{"abs",TYPE_UVEC2,{TYPE_UVEC2,TYPE_VOID}},
{"abs",TYPE_UVEC3,{TYPE_UVEC3,TYPE_VOID}},
{"abs",TYPE_UVEC4,{TYPE_UVEC4,TYPE_VOID}},
{"sign",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"sign",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"sign",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"sign",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"sign",TYPE_INT,{TYPE_INT,TYPE_VOID}},
{"sign",TYPE_IVEC2,{TYPE_IVEC2,TYPE_VOID}},
{"sign",TYPE_IVEC3,{TYPE_IVEC3,TYPE_VOID}},
{"sign",TYPE_IVEC4,{TYPE_IVEC4,TYPE_VOID}},
{"floor",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"floor",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"floor",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"floor",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"trunc",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"trunc",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"trunc",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"trunc",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"round",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"round",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"round",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"round",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"ceil",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"ceil",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"ceil",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"ceil",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"fract",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"fract",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"fract",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"fract",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"mod",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"mod",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"mod",TYPE_VEC2,{TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"mod",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"mod",TYPE_VEC3,{TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"mod",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"mod",TYPE_VEC4,{TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"modf",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"modf",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"modf",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"modf",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"min",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"min",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"min",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"min",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"min",TYPE_INT,{TYPE_INT,TYPE_INT,TYPE_VOID}},
{"min",TYPE_IVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"min",TYPE_IVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"min",TYPE_IVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"min",TYPE_UINT,{TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"min",TYPE_UVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"min",TYPE_UVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"min",TYPE_UVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"max",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"max",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"max",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"max",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"max",TYPE_INT,{TYPE_INT,TYPE_INT,TYPE_VOID}},
{"max",TYPE_IVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"max",TYPE_IVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"max",TYPE_IVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"max",TYPE_UINT,{TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"max",TYPE_UVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"max",TYPE_UVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"max",TYPE_UVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"clamp",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"clamp",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"clamp",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"clamp",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"clamp",TYPE_VEC2,{TYPE_VEC2,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"clamp",TYPE_VEC3,{TYPE_VEC3,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"clamp",TYPE_VEC4,{TYPE_VEC4,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"clamp",TYPE_INT,{TYPE_INT,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"clamp",TYPE_IVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"clamp",TYPE_IVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"clamp",TYPE_IVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"clamp",TYPE_IVEC2,{TYPE_IVEC2,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"clamp",TYPE_IVEC3,{TYPE_IVEC3,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"clamp",TYPE_IVEC4,{TYPE_IVEC4,TYPE_INT,TYPE_INT,TYPE_VOID}},
{"clamp",TYPE_UINT,{TYPE_UINT,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"clamp",TYPE_UVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"clamp",TYPE_UVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"clamp",TYPE_UVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"clamp",TYPE_UVEC2,{TYPE_UVEC2,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"clamp",TYPE_UVEC3,{TYPE_UVEC3,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"clamp",TYPE_UVEC4,{TYPE_UVEC4,TYPE_UINT,TYPE_UINT,TYPE_VOID}},
{"mix",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"mix",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_BOOL,TYPE_VOID}},
{"mix",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"mix",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_BOOL,TYPE_VOID}},
{"mix",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_BVEC2,TYPE_VOID}},
{"mix",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"mix",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"mix",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_BOOL,TYPE_VOID}},
{"mix",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_BVEC3,TYPE_VOID}},
{"mix",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"mix",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"mix",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_BOOL,TYPE_VOID}},
{"mix",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_BVEC3,TYPE_VOID}},
{"mix",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"step",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"step",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"step",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"step",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"step",TYPE_VEC2,{TYPE_FLOAT,TYPE_VEC2,TYPE_VOID}},
{"step",TYPE_VEC3,{TYPE_FLOAT,TYPE_VEC3,TYPE_VOID}},
{"step",TYPE_VEC4,{TYPE_FLOAT,TYPE_VEC4,TYPE_VOID}},
{"smoothstep",TYPE_FLOAT,{TYPE_FLOAT,TYPE_FLOAT,TYPE_FLOAT,TYPE_VOID}},
{"smoothstep",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"smoothstep",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"smoothstep",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"smoothstep",TYPE_VEC2,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VEC2,TYPE_VOID}},
{"smoothstep",TYPE_VEC3,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VEC3,TYPE_VOID}},
{"smoothstep",TYPE_VEC4,{TYPE_FLOAT,TYPE_FLOAT,TYPE_VEC4,TYPE_VOID}},
{"isnan",TYPE_BOOL,{TYPE_FLOAT,TYPE_VOID}},
{"isnan",TYPE_BOOL,{TYPE_VEC2,TYPE_VOID}},
{"isnan",TYPE_BOOL,{TYPE_VEC3,TYPE_VOID}},
{"isnan",TYPE_BOOL,{TYPE_VEC4,TYPE_VOID}},
{"isinf",TYPE_BOOL,{TYPE_FLOAT,TYPE_VOID}},
{"isinf",TYPE_BOOL,{TYPE_VEC2,TYPE_VOID}},
{"isinf",TYPE_BOOL,{TYPE_VEC3,TYPE_VOID}},
{"isinf",TYPE_BOOL,{TYPE_VEC4,TYPE_VOID}},
{"floatBitsToInt",TYPE_INT,{TYPE_FLOAT,TYPE_VOID}},
{"floatBitsToInt",TYPE_IVEC2,{TYPE_VEC2,TYPE_VOID}},
{"floatBitsToInt",TYPE_IVEC3,{TYPE_VEC3,TYPE_VOID}},
{"floatBitsToInt",TYPE_IVEC4,{TYPE_VEC4,TYPE_VOID}},
{"floatBitsToUInt",TYPE_UINT,{TYPE_FLOAT,TYPE_VOID}},
{"floatBitsToUInt",TYPE_UVEC2,{TYPE_VEC2,TYPE_VOID}},
{"floatBitsToUInt",TYPE_UVEC3,{TYPE_VEC3,TYPE_VOID}},
{"floatBitsToUInt",TYPE_UVEC4,{TYPE_VEC4,TYPE_VOID}},
{"intBitsToFloat",TYPE_FLOAT,{TYPE_INT,TYPE_VOID}},
{"intBitsToFloat",TYPE_VEC2,{TYPE_IVEC2,TYPE_VOID}},
{"intBitsToFloat",TYPE_VEC3,{TYPE_IVEC3,TYPE_VOID}},
{"intBitsToFloat",TYPE_VEC4,{TYPE_IVEC4,TYPE_VOID}},
{"uintBitsToFloat",TYPE_FLOAT,{TYPE_UINT,TYPE_VOID}},
{"uintBitsToFloat",TYPE_VEC2,{TYPE_UVEC2,TYPE_VOID}},
{"uintBitsToFloat",TYPE_VEC3,{TYPE_UVEC3,TYPE_VOID}},
{"uintBitsToFloat",TYPE_VEC4,{TYPE_UVEC4,TYPE_VOID}},
//builtins - geometric
{"length",TYPE_FLOAT,{TYPE_VEC2,TYPE_VOID}},
{"length",TYPE_FLOAT,{TYPE_VEC3,TYPE_VOID}},
{"length",TYPE_FLOAT,{TYPE_VEC4,TYPE_VOID}},
{"distance",TYPE_FLOAT,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"distance",TYPE_FLOAT,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"distance",TYPE_FLOAT,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"dot",TYPE_FLOAT,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"dot",TYPE_FLOAT,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"dot",TYPE_FLOAT,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"cross",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"normalize",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"normalize",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"normalize",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"reflect",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"refract",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"facefordward",TYPE_VEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"facefordward",TYPE_VEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"facefordward",TYPE_VEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"matrixCompMult",TYPE_MAT2,{TYPE_MAT2,TYPE_MAT2,TYPE_VOID}},
{"matrixCompMult",TYPE_MAT3,{TYPE_MAT3,TYPE_MAT3,TYPE_VOID}},
{"matrixCompMult",TYPE_MAT4,{TYPE_MAT4,TYPE_MAT4,TYPE_VOID}},
{"outerProduct",TYPE_MAT2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"outerProduct",TYPE_MAT3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"outerProduct",TYPE_MAT4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"transpose",TYPE_MAT2,{TYPE_MAT2,TYPE_VOID}},
{"transpose",TYPE_MAT3,{TYPE_MAT3,TYPE_VOID}},
{"transpose",TYPE_MAT4,{TYPE_MAT4,TYPE_VOID}},
{"determinant",TYPE_FLOAT,{TYPE_MAT2,TYPE_VOID}},
{"determinant",TYPE_FLOAT,{TYPE_MAT3,TYPE_VOID}},
{"determinant",TYPE_FLOAT,{TYPE_MAT4,TYPE_VOID}},
{"inverse",TYPE_MAT2,{TYPE_MAT2,TYPE_VOID}},
{"inverse",TYPE_MAT3,{TYPE_MAT3,TYPE_VOID}},
{"inverse",TYPE_MAT4,{TYPE_MAT4,TYPE_VOID}},
{"lessThan",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"lessThan",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"lessThan",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"lessThan",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"lessThan",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"lessThan",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"lessThan",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"lessThan",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"lessThan",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"greaterThan",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"greaterThan",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"greaterThan",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"greaterThan",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"greaterThan",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"greaterThan",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"greaterThan",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"greaterThan",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"greaterThan",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"lessThanEqual",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"greaterThanEqual",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"equal",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"equal",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"equal",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"equal",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"equal",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"equal",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"equal",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"equal",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"equal",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"equal",TYPE_BVEC2,{TYPE_BVEC2,TYPE_BVEC2,TYPE_VOID}},
{"equal",TYPE_BVEC3,{TYPE_BVEC3,TYPE_BVEC3,TYPE_VOID}},
{"equal",TYPE_BVEC4,{TYPE_BVEC4,TYPE_BVEC4,TYPE_VOID}},
{"notEqual",TYPE_BVEC2,{TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"notEqual",TYPE_BVEC3,{TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"notEqual",TYPE_BVEC4,{TYPE_VEC4,TYPE_VEC4,TYPE_VOID}},
{"notEqual",TYPE_BVEC2,{TYPE_IVEC2,TYPE_IVEC2,TYPE_VOID}},
{"notEqual",TYPE_BVEC3,{TYPE_IVEC3,TYPE_IVEC3,TYPE_VOID}},
{"notEqual",TYPE_BVEC4,{TYPE_IVEC4,TYPE_IVEC4,TYPE_VOID}},
{"notEqual",TYPE_BVEC2,{TYPE_UVEC2,TYPE_UVEC2,TYPE_VOID}},
{"notEqual",TYPE_BVEC3,{TYPE_UVEC3,TYPE_UVEC3,TYPE_VOID}},
{"notEqual",TYPE_BVEC4,{TYPE_UVEC4,TYPE_UVEC4,TYPE_VOID}},
{"notEqual",TYPE_BVEC2,{TYPE_BVEC2,TYPE_BVEC2,TYPE_VOID}},
{"notEqual",TYPE_BVEC3,{TYPE_BVEC3,TYPE_BVEC3,TYPE_VOID}},
{"notEqual",TYPE_BVEC4,{TYPE_BVEC4,TYPE_BVEC4,TYPE_VOID}},
{"any",TYPE_BOOL,{TYPE_BVEC2,TYPE_VOID}},
{"any",TYPE_BOOL,{TYPE_BVEC3,TYPE_VOID}},
{"any",TYPE_BOOL,{TYPE_BVEC4,TYPE_VOID}},
{"all",TYPE_BOOL,{TYPE_BVEC2,TYPE_VOID}},
{"all",TYPE_BOOL,{TYPE_BVEC3,TYPE_VOID}},
{"all",TYPE_BOOL,{TYPE_BVEC4,TYPE_VOID}},
{"not",TYPE_BOOL,{TYPE_BVEC2,TYPE_VOID}},
{"not",TYPE_BOOL,{TYPE_BVEC3,TYPE_VOID}},
{"not",TYPE_BOOL,{TYPE_BVEC4,TYPE_VOID}},
//builtins - texture
{"textureSize",TYPE_VEC2,{TYPE_SAMPLER2D,TYPE_INT,TYPE_VOID}},
{"textureSize",TYPE_VEC2,{TYPE_ISAMPLER2D,TYPE_INT,TYPE_VOID}},
{"textureSize",TYPE_VEC2,{TYPE_USAMPLER2D,TYPE_INT,TYPE_VOID}},
{"textureSize",TYPE_VEC2,{TYPE_SAMPLERCUBE,TYPE_INT,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC2,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC2,TYPE_VOID}},
{"texture",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"texture",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC2,TYPE_VOID}},
{"texture",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"texture",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC2,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLERCUBE,TYPE_VEC3,TYPE_VOID}},
{"texture",TYPE_VEC4,{TYPE_SAMPLERCUBE,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"textureProj",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC4,TYPE_VOID}},
{"textureProj",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"textureProj",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC4,TYPE_VOID}},
{"textureProj",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_VOID}},
{"textureProj",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC4,TYPE_VOID}},
{"textureProj",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProj",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureLod",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureLod",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureLod",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureLod",TYPE_VEC4,{TYPE_SAMPLERCUBE,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"texelFetch",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_IVEC2,TYPE_INT,TYPE_VOID}},
{"texelFetch",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_IVEC2,TYPE_INT,TYPE_VOID}},
{"texelFetch",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_IVEC2,TYPE_INT,TYPE_VOID}},
{"textureProjLod",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProjLod",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureProjLod",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProjLod",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureProjLod",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC3,TYPE_FLOAT,TYPE_VOID}},
{"textureProjLod",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC4,TYPE_FLOAT,TYPE_VOID}},
{"textureGrad",TYPE_VEC4,{TYPE_SAMPLER2D,TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"textureGrad",TYPE_IVEC4,{TYPE_ISAMPLER2D,TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"textureGrad",TYPE_UVEC4,{TYPE_USAMPLER2D,TYPE_VEC2,TYPE_VEC2,TYPE_VEC2,TYPE_VOID}},
{"textureGrad",TYPE_VEC4,{TYPE_SAMPLERCUBE,TYPE_VEC3,TYPE_VEC3,TYPE_VEC3,TYPE_VOID}},
{"textureScreen",TYPE_VEC4,{TYPE_VEC2,TYPE_VOID}},
{"dFdx",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"dFdx",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"dFdx",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"dFdx",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"dFdy",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"dFdy",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"dFdy",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"dFdy",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{"fwidth",TYPE_FLOAT,{TYPE_FLOAT,TYPE_VOID}},
{"fwidth",TYPE_VEC2,{TYPE_VEC2,TYPE_VOID}},
{"fwidth",TYPE_VEC3,{TYPE_VEC3,TYPE_VOID}},
{"fwidth",TYPE_VEC4,{TYPE_VEC4,TYPE_VOID}},
{NULL,TYPE_VOID,{TYPE_VOID}}
};
bool ShaderLanguage::_validate_function_call(BlockNode* p_block, OperatorNode *p_func,DataType *r_ret_type) {
ERR_FAIL_COND_V(p_func->op!=OP_CALL && p_func->op!=OP_CONSTRUCT,NULL);
Vector<DataType> args;
ERR_FAIL_COND_V( p_func->arguments[0]->type!=Node::TYPE_VARIABLE, NULL );
StringName name = static_cast<VariableNode*>(p_func->arguments[0])->name.operator String();
bool all_const=true;
for(int i=1;i<p_func->arguments.size();i++) {
if (p_func->arguments[i]->type!=Node::TYPE_CONSTANT)
all_const=false;
args.push_back(p_func->arguments[i]->get_datatype());
}
int argcount=args.size();
bool failed_builtin=false;
if (argcount<=4) {
// test builtins
int idx=0;
while (builtin_func_defs[idx].name) {
if (name==builtin_func_defs[idx].name) {
failed_builtin=true;
bool fail=false;
for(int i=0;i<argcount;i++) {
if (get_scalar_type(args[i])==args[i] && p_func->arguments[i+1]->type==Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode*>(p_func->arguments[i+1]),builtin_func_defs[idx].args[i])) {
//all good
} else if (args[i]!=builtin_func_defs[idx].args[i]) {
fail=true;
break;
}
}
if (!fail && argcount<4 && builtin_func_defs[idx].args[argcount]!=TYPE_VOID)
fail=true; //make sure the number of arguments matches
if (!fail) {
if (r_ret_type)
*r_ret_type=builtin_func_defs[idx].rettype;
return true;
}
}
idx++;
}
}
if (failed_builtin) {
String err ="Invalid arguments for built-in function: "+String(name)+"(";
for(int i=0;i<argcount;i++) {
if (i>0)
err+=",";
if (p_func->arguments[i+1]->type==Node::TYPE_CONSTANT && p_func->arguments[i+1]->get_datatype()==TYPE_INT && static_cast<ConstantNode*>(p_func->arguments[i+1])->values[0].sint<0) {
err+="-";
}
err+=get_datatype_name(args[i]);
}
err+=")";
_set_error(err);
return false;
}
#if 0
if (found_builtin) {
if (p_func->op==OP_CONSTRUCT && all_const) {
Vector<float> cdata;
for(int i=0;i<argcount;i++) {
Variant v = static_cast<ConstantNode*>(p_func->arguments[i+1])->value;
switch(v.get_type()) {
case Variant::REAL: cdata.push_back(v); break;
case Variant::INT: cdata.push_back(v); break;
case Variant::VECTOR2: { Vector2 v2=v; cdata.push_back(v2.x); cdata.push_back(v2.y); } break;
case Variant::VECTOR3: { Vector3 v3=v; cdata.push_back(v3.x); cdata.push_back(v3.y); cdata.push_back(v3.z);} break;
case Variant::PLANE: { Plane v4=v; cdata.push_back(v4.normal.x); cdata.push_back(v4.normal.y); cdata.push_back(v4.normal.z); cdata.push_back(v4.d); } break;
default: ERR_FAIL_V(NULL);
}
}
ConstantNode *cn = parser.create_node<ConstantNode>(p_func->parent);
Variant data;
switch(p_func->return_cache) {
case TYPE_FLOAT: data = cdata[0]; break;
case TYPE_VEC2:
if (cdata.size()==1)
data = Vector2(cdata[0],cdata[0]);
else
data = Vector2(cdata[0],cdata[1]);
break;
case TYPE_VEC3:
if (cdata.size()==1)
data = Vector3(cdata[0],cdata[0],cdata[0]);
else
data = Vector3(cdata[0],cdata[1],cdata[2]);
break;
case TYPE_VEC4:
if (cdata.size()==1)
data = Plane(cdata[0],cdata[0],cdata[0],cdata[0]);
else
data = Plane(cdata[0],cdata[1],cdata[2],cdata[3]);
break;
}
cn->datatype=p_func->return_cache;
cn->value=data;
return cn;
}
return p_func;
}
#endif
// try existing functions..
StringName exclude_function;
BlockNode *block = p_block;
while(block) {
if (block->parent_function) {
exclude_function=block->parent_function->name;
}
block=block->parent_block;
}
if (name==exclude_function) {
_set_error("Recursion is not allowed");
return false;
}
for(int i=0;i<shader->functions.size();i++) {
if (name != shader->functions[i].name)
continue;
if (!shader->functions[i].callable) {
_set_error("Function '"+String(name)+" can't be called from source code.");
return false;
}
FunctionNode *pfunc = shader->functions[i].function;
if (pfunc->arguments.size()!=args.size())
continue;
bool fail=false;
for(int i=0;i<args.size();i++) {
if (get_scalar_type(args[i])==args[i] && p_func->arguments[i+1]->type==Node::TYPE_CONSTANT && convert_constant(static_cast<ConstantNode*>(p_func->arguments[i+1]),pfunc->arguments[i].type)) {
//all good
} else if (args[i]!=pfunc->arguments[i].type) {
fail=true;
break;
}
}
if (!fail) {
p_func->return_cache=pfunc->return_type;
return true;
}
}
return false;
}
bool ShaderLanguage::_parse_function_arguments(BlockNode* p_block,const Map<StringName,DataType> &p_builtin_types,OperatorNode* p_func,int *r_complete_arg) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (tk.type==TK_PARENTHESIS_CLOSE) {
return true;
}
_set_tkpos(pos);;
while(true) {
if (r_complete_arg) {
pos = _get_tkpos();
tk = _get_token();
if (tk.type==TK_CURSOR) {
*r_complete_arg=p_func->arguments.size()-1;
} else {
_set_tkpos(pos);
}
}
Node *arg= _parse_and_reduce_expression(p_block,p_builtin_types);
if (!arg) {
return false;
}
p_func->arguments.push_back(arg);
tk = _get_token();
if (tk.type==TK_PARENTHESIS_CLOSE) {
return true;
} else if (tk.type!=TK_COMMA) {
// something is broken
_set_error("Expected ',' or ')' after argument");
return false;
}
}
return true;
}
bool ShaderLanguage::is_token_operator(TokenType p_type) {
return (p_type==TK_OP_EQUAL ||
p_type==TK_OP_NOT_EQUAL ||
p_type==TK_OP_LESS ||
p_type==TK_OP_LESS_EQUAL ||
p_type==TK_OP_GREATER ||
p_type==TK_OP_GREATER_EQUAL ||
p_type==TK_OP_AND ||
p_type==TK_OP_OR ||
p_type==TK_OP_NOT ||
p_type==TK_OP_ADD ||
p_type==TK_OP_SUB ||
p_type==TK_OP_MUL ||
p_type==TK_OP_DIV ||
p_type==TK_OP_MOD ||
p_type==TK_OP_SHIFT_LEFT ||
p_type==TK_OP_SHIFT_RIGHT ||
p_type==TK_OP_ASSIGN ||
p_type==TK_OP_ASSIGN_ADD ||
p_type==TK_OP_ASSIGN_SUB ||
p_type==TK_OP_ASSIGN_MUL ||
p_type==TK_OP_ASSIGN_DIV ||
p_type==TK_OP_ASSIGN_MOD ||
p_type==TK_OP_ASSIGN_SHIFT_LEFT ||
p_type==TK_OP_ASSIGN_SHIFT_RIGHT ||
p_type==TK_OP_ASSIGN_BIT_AND ||
p_type==TK_OP_ASSIGN_BIT_OR ||
p_type==TK_OP_ASSIGN_BIT_XOR ||
p_type==TK_OP_BIT_AND ||
p_type==TK_OP_BIT_OR ||
p_type==TK_OP_BIT_XOR ||
p_type==TK_OP_BIT_INVERT ||
p_type==TK_OP_INCREMENT ||
p_type==TK_OP_DECREMENT ||
p_type==TK_QUESTION ||
p_type==TK_COLON );
}
bool ShaderLanguage::convert_constant(ConstantNode* p_constant, DataType p_to_type,ConstantNode::Value *p_value) {
if (p_constant->datatype==p_to_type) {
if (p_value) {
for(int i=0;i<p_constant->values.size();i++) {
p_value[i]=p_constant->values[i];
}
}
return true;
} else if (p_constant->datatype==TYPE_INT && p_to_type==TYPE_FLOAT) {
if (p_value) {
p_value->real=p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype==TYPE_UINT && p_to_type==TYPE_FLOAT) {
if (p_value) {
p_value->real=p_constant->values[0].uint;
}
return true;
} else if (p_constant->datatype==TYPE_INT && p_to_type==TYPE_UINT) {
if (p_constant->values[0].sint<0) {
return false;
}
if (p_value) {
p_value->uint=p_constant->values[0].sint;
}
return true;
} else if (p_constant->datatype==TYPE_UINT && p_to_type==TYPE_INT) {
if (p_constant->values[0].uint>0x7FFFFFFF) {
return false;
}
if (p_value) {
p_value->sint=p_constant->values[0].uint;
}
return true;
} else
return false;
}
bool ShaderLanguage::is_scalar_type(DataType p_type) {
return p_type==TYPE_BOOL || p_type==TYPE_INT || p_type==TYPE_UINT || p_type==TYPE_FLOAT;
}
bool ShaderLanguage::is_sampler_type(DataType p_type) {
return p_type==TYPE_SAMPLER2D || p_type==TYPE_ISAMPLER2D || p_type==TYPE_USAMPLER2D || p_type==TYPE_SAMPLERCUBE;
}
void ShaderLanguage::get_keyword_list(List<String> *r_keywords) {
Set<String> kws;
int idx=0;
while(keyword_list[idx].text) {
kws.insert(keyword_list[idx].text);
idx++;
}
idx=0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for(Set<String>::Element *E=kws.front();E;E=E->next()) {
r_keywords->push_back(E->get());
}
}
void ShaderLanguage::get_builtin_funcs(List<String> *r_keywords) {
Set<String> kws;
int idx=0;
while (builtin_func_defs[idx].name) {
kws.insert(builtin_func_defs[idx].name);
idx++;
}
for(Set<String>::Element *E=kws.front();E;E=E->next()) {
r_keywords->push_back(E->get());
}
}
ShaderLanguage::DataType ShaderLanguage::get_scalar_type(DataType p_type) {
static const DataType scalar_types[]={
TYPE_VOID,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_BOOL,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_UINT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_FLOAT,
TYPE_INT,
TYPE_UINT,
TYPE_FLOAT,
};
return scalar_types[p_type];
}
bool ShaderLanguage::_get_completable_identifier(BlockNode *p_block,CompletionType p_type,StringName& identifier) {
identifier=StringName();
TkPos pos;
Token tk = _get_token();
if (tk.type==TK_IDENTIFIER) {
identifier=tk.text;
pos = _get_tkpos();
tk = _get_token();
}
if (tk.type==TK_CURSOR) {
completion_type=p_type;
completion_line=tk_line;
completion_block=p_block;
pos = _get_tkpos();
tk = _get_token();
if (tk.type==TK_IDENTIFIER) {
identifier=identifier.operator String() + tk.text.operator String();
} else {
_set_tkpos(pos);
}
return true;
} else if (identifier!=StringName()){
_set_tkpos(pos);
}
return false;
}
ShaderLanguage::Node* ShaderLanguage::_parse_expression(BlockNode* p_block,const Map<StringName,DataType> &p_builtin_types) {
Vector<Expression> expression;
//Vector<TokenType> operators;
while(true) {
Node *expr=NULL;
TkPos prepos = _get_tkpos();
Token tk = _get_token();
TkPos pos = _get_tkpos();
if (tk.type==TK_PARENTHESIS_OPEN) {
//handle subexpression
expr = _parse_and_reduce_expression(p_block,p_builtin_types);
if (!expr)
return NULL;
tk = _get_token();
if (tk.type!=TK_PARENTHESIS_CLOSE) {
_set_error("Expected ')' in expression");
return NULL;
}
} else if (tk.type==TK_REAL_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.real=tk.constant;
constant->values.push_back(v);
constant->datatype=TYPE_FLOAT;
expr=constant;
} else if (tk.type==TK_INT_CONSTANT) {
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.sint=tk.constant;
constant->values.push_back(v);
constant->datatype=TYPE_INT;
expr=constant;
} else if (tk.type==TK_TRUE) {
//print_line("found true");
//handle true constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean=true;
constant->values.push_back(v);
constant->datatype=TYPE_BOOL;
expr=constant;
} else if (tk.type==TK_FALSE) {
//handle false constant
ConstantNode *constant = alloc_node<ConstantNode>();
ConstantNode::Value v;
v.boolean=false;
constant->values.push_back(v);
constant->datatype=TYPE_BOOL;
expr=constant;
} else if (tk.type==TK_TYPE_VOID) {
//make sure void is not used in expression
_set_error("Void value not allowed in Expression");
return NULL;
} else if (is_token_nonvoid_datatype(tk.type)) {
//basic type constructor
OperatorNode *func = alloc_node<OperatorNode>();
func->op=OP_CONSTRUCT;
if (is_token_precision(tk.type)) {
func->return_precision_cache=get_token_precision(tk.type);
tk=_get_token();
}
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name=get_datatype_name(get_token_datatype(tk.type));
func->arguments.push_back(funcname);
tk=_get_token();
if (tk.type!=TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after type name");
return NULL;
}
int carg=-1;
bool ok = _parse_function_arguments(p_block,p_builtin_types,func,&carg);
if (carg>=0) {
completion_type=COMPLETION_CALL_ARGUMENTS;
completion_line=tk_line;
completion_block=p_block;
completion_function=funcname->name;
completion_argument=carg;
}
if (!ok)
return NULL;
if (!_validate_function_call(p_block,func,&func->return_cache)) {
_set_error("No matching constructor found for: '"+String(funcname->name)+"'");
return NULL;
}
//validate_Function_call()
expr=_reduce_expression(p_block,func);
} else if (tk.type==TK_IDENTIFIER) {
_set_tkpos(prepos);
StringName identifier;
_get_completable_identifier(p_block,COMPLETION_IDENTIFIER,identifier);
tk=_get_token();
if (tk.type==TK_PARENTHESIS_OPEN) {
//a function
StringName name = identifier;
OperatorNode *func = alloc_node<OperatorNode>();
func->op=OP_CALL;
VariableNode *funcname = alloc_node<VariableNode>();
funcname->name=name;
func->arguments.push_back(funcname);
int carg=-1;
bool ok =_parse_function_arguments(p_block,p_builtin_types,func,&carg);
for(int i=0;i<shader->functions.size();i++) {
if (shader->functions[i].name==name) {
shader->functions[i].uses_function.insert(name);
}
}
if (carg>=0) {
completion_type=COMPLETION_CALL_ARGUMENTS;
completion_line=tk_line;
completion_block=p_block;
completion_function=funcname->name;
completion_argument=carg;
}
if (!ok)
return NULL;
if (!_validate_function_call(p_block,func,&func->return_cache)) {
_set_error("No matching function found for: '"+String(funcname->name)+"'");
return NULL;
}
expr=func;
} else {
//an identifier
_set_tkpos(pos);
DataType data_type;
IdentifierType ident_type;
if (!_find_identifier(p_block,p_builtin_types,identifier,&data_type,&ident_type)) {
_set_error("Unknown identifier in expression: "+String(identifier));
return NULL;
}
if (ident_type==IDENTIFIER_FUNCTION) {
_set_error("Can't use function as identifier: "+String(identifier));
return NULL;
}
VariableNode *varname = alloc_node<VariableNode>();
varname->name=identifier;
varname->datatype_cache=data_type;
expr=varname;
}
} else if (tk.type==TK_OP_ADD) {
continue; //this one does nothing
} else if (tk.type==TK_OP_SUB || tk.type==TK_OP_NOT || tk.type==TK_OP_BIT_INVERT || tk.type==TK_OP_INCREMENT || tk.type==TK_OP_DECREMENT) {
Expression e;
e.is_op=true;
switch(tk.type) {
case TK_OP_SUB: e.op=OP_NEGATE; break;
case TK_OP_NOT: e.op=OP_NOT; break;
case TK_OP_BIT_INVERT: e.op=OP_BIT_INVERT; break;
case TK_OP_INCREMENT: e.op=OP_INCREMENT; break;
case TK_OP_DECREMENT: e.op=OP_DECREMENT; break;
default: ERR_FAIL_V(NULL);
}
expression.push_back(e);
continue;
} else {
_set_error("Expected expression, found: "+get_token_text(tk));
return NULL;
//nothing
}
ERR_FAIL_COND_V(!expr,NULL);
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
/* OK now see what's NEXT to the operator.. */
while(true) {
TkPos pos = _get_tkpos();
tk=_get_token();
if (tk.type==TK_PERIOD) {
StringName identifier;
if (_get_completable_identifier(p_block,COMPLETION_INDEX,identifier)) {
completion_base=expr->get_datatype();
}
if (identifier==StringName()) {
_set_error("Expected identifier as member");
return NULL;
}
DataType dt = expr->get_datatype();
String ident = identifier;
bool ok=true;
DataType member_type;
switch(dt) {
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
int l = ident.length();
if (l==1) {
member_type=DataType(dt-1);
} else if (l==2) {
member_type=dt;
} else {
ok=false;
break;
}
const CharType *c=ident.ptr();
for(int i=0;i<l;i++) {
switch(c[i]) {
case 'r':
case 'g':
case 'x':
case 'y':
break;
default:
ok=false;
break;
}
}
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
int l = ident.length();
if (l==1) {
member_type=DataType(dt-2);
} else if (l==2) {
member_type=DataType(dt-1);
} else if (l==3) {
member_type=dt;
} else {
ok=false;
break;
}
const CharType *c=ident.ptr();
for(int i=0;i<l;i++) {
switch(c[i]) {
case 'r':
case 'g':
case 'b':
case 'x':
case 'y':
case 'z':
break;
default:
ok=false;
break;
}
}
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
int l = ident.length();
if (l==1) {
member_type=DataType(dt-3);
} else if (l==2) {
member_type=DataType(dt-2);
} else if (l==3) {
member_type=DataType(dt-1);;
} else if (l==4) {
member_type=dt;
} else {
ok=false;
break;
}
const CharType *c=ident.ptr();
for(int i=0;i<l;i++) {
switch(c[i]) {
case 'r':
case 'g':
case 'b':
case 'a':
case 'x':
case 'y':
case 'z':
case 'w':
break;
default:
ok=false;
break;
}
}
} break;
case TYPE_MAT2: ok=(ident=="x" || ident=="y"); member_type=TYPE_VEC2; break;
case TYPE_MAT3: ok=(ident=="x" || ident=="y" || ident=="z" ); member_type=TYPE_VEC3; break;
case TYPE_MAT4: ok=(ident=="x" || ident=="y" || ident=="z" || ident=="w"); member_type=TYPE_VEC4; break;
default: {}
}
if (!ok) {
_set_error("Invalid member for expression: ."+ident);
return NULL;
}
MemberNode *mn = alloc_node<MemberNode>();
mn->basetype=dt;
mn->datatype=member_type;
mn->name=ident;
mn->owner=expr;
expr=mn;
//todo
//member (period) has priority over any operator
//creates a subindexing expression in place
/*} else if (tk.type==TK_BRACKET_OPEN) {
//todo
//subindexing has priority over any operator
//creates a subindexing expression in place
*/
} else if (tk.type==TK_OP_INCREMENT || tk.type==TK_OP_DECREMENT) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op=tk.type==TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT;
op->arguments.push_back(expr);
if (!_validate_operator(op,&op->return_cache)) {
_set_error("Invalid base type for increment/decrement operator");
return NULL;
}
expr=op;
} else {
_set_tkpos(pos);
break;
}
}
Expression e;
e.is_op=false;
e.node=expr;
expression.push_back(e);
pos = _get_tkpos();
tk = _get_token();
if (is_token_operator(tk.type)) {
Expression o;
o.is_op=true;
switch(tk.type) {
case TK_OP_EQUAL: o.op = OP_EQUAL; break;
case TK_OP_NOT_EQUAL: o.op = OP_NOT_EQUAL; break;
case TK_OP_LESS: o.op = OP_LESS; break;
case TK_OP_LESS_EQUAL: o.op = OP_LESS_EQUAL; break;
case TK_OP_GREATER: o.op = OP_GREATER; break;
case TK_OP_GREATER_EQUAL: o.op = OP_GREATER_EQUAL; break;
case TK_OP_AND: o.op = OP_AND; break;
case TK_OP_OR: o.op = OP_OR; break;
case TK_OP_ADD: o.op = OP_ADD; break;
case TK_OP_SUB: o.op = OP_SUB; break;
case TK_OP_MUL: o.op = OP_MUL; break;
case TK_OP_DIV: o.op = OP_DIV; break;
case TK_OP_MOD: o.op = OP_MOD; break;
case TK_OP_SHIFT_LEFT: o.op = OP_SHIFT_LEFT; break;
case TK_OP_SHIFT_RIGHT: o.op = OP_SHIFT_RIGHT; break;
case TK_OP_ASSIGN: o.op = OP_ASSIGN; break;
case TK_OP_ASSIGN_ADD: o.op = OP_ASSIGN_ADD; break;
case TK_OP_ASSIGN_SUB: o.op = OP_ASSIGN_SUB; break;
case TK_OP_ASSIGN_MUL: o.op = OP_ASSIGN_MUL; break;
case TK_OP_ASSIGN_DIV: o.op = OP_ASSIGN_DIV; break;
case TK_OP_ASSIGN_MOD: o.op = OP_ASSIGN_MOD; break;
case TK_OP_ASSIGN_SHIFT_LEFT: o.op = OP_ASSIGN_SHIFT_LEFT; break;
case TK_OP_ASSIGN_SHIFT_RIGHT: o.op = OP_ASSIGN_SHIFT_RIGHT; break;
case TK_OP_ASSIGN_BIT_AND: o.op = OP_ASSIGN_BIT_AND; break;
case TK_OP_ASSIGN_BIT_OR: o.op = OP_ASSIGN_BIT_OR; break;
case TK_OP_ASSIGN_BIT_XOR: o.op = OP_ASSIGN_BIT_XOR; break;
case TK_OP_BIT_AND: o.op = OP_BIT_AND; break;
case TK_OP_BIT_OR: o.op = OP_BIT_OR ; break;
case TK_OP_BIT_XOR: o.op = OP_BIT_XOR; break;
case TK_QUESTION: o.op = OP_SELECT_IF; break;
case TK_COLON: o.op = OP_SELECT_ELSE; break;
default: {
_set_error("Invalid token for operator: "+get_token_text(tk));
return NULL;
}
}
expression.push_back(o);
} else {
_set_tkpos(pos); //something else, so rollback and end
break;
}
}
/* Reduce the set set of expressions and place them in an operator tree, respecting precedence */
while(expression.size()>1) {
int next_op=-1;
int min_priority=0xFFFFF;
bool is_unary=false;
bool is_ternary=false;
for(int i=0;i<expression.size();i++) {
if (!expression[i].is_op) {
continue;
}
bool unary=false;
bool ternary=false;
int priority;
switch(expression[i].op) {
case OP_EQUAL: priority=8; break;
case OP_NOT_EQUAL: priority=8; break;
case OP_LESS: priority=7; break;
case OP_LESS_EQUAL: priority=7; break;
case OP_GREATER: priority=7; break;
case OP_GREATER_EQUAL: priority=7; break;
case OP_AND: priority=12; break;
case OP_OR: priority=14; break;
case OP_NOT: priority=3; unary=true; break;
case OP_NEGATE: priority=3; unary=true; break;
case OP_ADD: priority=5; break;
case OP_SUB: priority=5; break;
case OP_MUL: priority=4; break;
case OP_DIV: priority=4; break;
case OP_MOD: priority=4; break;
case OP_SHIFT_LEFT: priority=6; break;
case OP_SHIFT_RIGHT: priority=6; break;
case OP_ASSIGN: priority=16; break;
case OP_ASSIGN_ADD: priority=16; break;
case OP_ASSIGN_SUB: priority=16; break;
case OP_ASSIGN_MUL: priority=16; break;
case OP_ASSIGN_DIV: priority=16; break;
case OP_ASSIGN_MOD: priority=16; break;
case OP_ASSIGN_SHIFT_LEFT: priority=16; break;
case OP_ASSIGN_SHIFT_RIGHT: priority=16; break;
case OP_ASSIGN_BIT_AND: priority=16; break;
case OP_ASSIGN_BIT_OR: priority=16; break;
case OP_ASSIGN_BIT_XOR: priority=16; break;
case OP_BIT_AND: priority=9; break;
case OP_BIT_OR: priority=11; break;
case OP_BIT_XOR: priority=10; break;
case OP_BIT_INVERT: priority=3; unary=true; break;
case OP_INCREMENT: priority=3; unary=true; break;
case OP_DECREMENT: priority=3; unary=true; break;
case OP_SELECT_IF: priority=15; ternary=true; break;
case OP_SELECT_ELSE: priority=15; ternary=true; break;
default: ERR_FAIL_V(NULL); //unexpected operator
}
if (priority<min_priority) {
// < is used for left to right (default)
// <= is used for right to left
next_op=i;
min_priority=priority;
is_unary=unary;
is_ternary=ternary;
}
}
ERR_FAIL_COND_V(next_op==-1,NULL);
// OK! create operator..
// OK! create operator..
if (is_unary) {
int expr_pos=next_op;
while(expression[expr_pos].is_op) {
expr_pos++;
if (expr_pos==expression.size()) {
//can happen..
_set_error("Unexpected end of expression..");
return NULL;
}
}
//consecutively do unary opeators
for(int i=expr_pos-1;i>=next_op;i--) {
OperatorNode *op = alloc_node<OperatorNode>();
op->op=expression[i].op;
op->arguments.push_back(expression[i+1].node);
expression[i].is_op=false;
expression[i].node=op;
if (!_validate_operator(op,&op->return_cache)) {
String at;
for(int i=0;i<op->arguments.size();i++) {
if (i>0)
at+=" and ";
at+=get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid arguments to unary operator '"+get_operator_text(op->op)+"' :" +at);
return NULL;
}
expression.remove(i+1);
}
} else if (is_ternary) {
if (next_op <1 || next_op>=(expression.size()-1)) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
if (next_op+2 >= expression.size() || !expression[next_op+2].is_op || expression[next_op+2].op!=OP_SELECT_ELSE) {
_set_error("Mising matching ':' for select operator");
return NULL;
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op=expression[next_op].op;
op->arguments.push_back(expression[next_op-1].node);
op->arguments.push_back(expression[next_op+1].node);
op->arguments.push_back(expression[next_op+3].node);
expression[next_op-1].is_op=false;
expression[next_op-1].node=op;
if (!_validate_operator(op,&op->return_cache)) {
String at;
for(int i=0;i<op->arguments.size();i++) {
if (i>0)
at+=" and ";
at+=get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid argument to ternary ?: operator: "+at);
return NULL;
}
for(int i=0;i<4;i++) {
expression.remove(next_op);
}
} else {
if (next_op <1 || next_op>=(expression.size()-1)) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
OperatorNode *op = alloc_node<OperatorNode>();
op->op=expression[next_op].op;
if (expression[next_op-1].is_op) {
_set_error("Parser bug..");
ERR_FAIL_V(NULL);
}
if (expression[next_op+1].is_op) {
// this is not invalid and can really appear
// but it becomes invalid anyway because no binary op
// can be followed by an unary op in a valid combination,
// due to how precedence works, unaries will always dissapear first
_set_error("Parser bug..");
}
op->arguments.push_back(expression[next_op-1].node); //expression goes as left
op->arguments.push_back(expression[next_op+1].node); //next expression goes as right
expression[next_op-1].node=op;
//replace all 3 nodes by this operator and make it an expression
if (!_validate_operator(op,&op->return_cache)) {
String at;
for(int i=0;i<op->arguments.size();i++) {
if (i>0)
at+=" and ";
at+=get_datatype_name(op->arguments[i]->get_datatype());
}
_set_error("Invalid arguments to operator '"+get_operator_text(op->op)+"' :" +at);
return NULL;
}
expression.remove(next_op);
expression.remove(next_op);
}
}
return expression[0].node;
}
ShaderLanguage::Node* ShaderLanguage::_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node) {
if (p_node->type!=Node::TYPE_OPERATOR)
return p_node;
//for now only reduce simple constructors
OperatorNode *op=static_cast<OperatorNode*>(p_node);
if (op->op==OP_CONSTRUCT) {
ERR_FAIL_COND_V(op->arguments[0]->type!=Node::TYPE_VARIABLE,p_node);
VariableNode *vn = static_cast<VariableNode*>(op->arguments[0]);
// StringName name=vn->name;
DataType base=get_scalar_type(op->get_datatype());
Vector<ConstantNode::Value> values;
for(int i=1;i<op->arguments.size();i++) {
op->arguments[i]=_reduce_expression(p_block,op->arguments[i]);
if (op->arguments[i]->type==Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode*>(op->arguments[i]);
if (get_scalar_type(cn->datatype)==base) {
for(int j=0;j<cn->values.size();j++) {
values.push_back(cn->values[j]);
}
} else if (get_scalar_type(cn->datatype)==cn->datatype) {
ConstantNode::Value v;
if (!convert_constant(cn,base,&v)) {
return p_node;
}
values.push_back(v);
} else {
return p_node;
}
} else {
return p_node;
}
}
ConstantNode *cn=alloc_node<ConstantNode>();
cn->datatype=op->get_datatype();
cn->values=values;
return cn;
} else if (op->op==OP_NEGATE) {
op->arguments[0]=_reduce_expression(p_block,op->arguments[0]);
if (op->arguments[0]->type==Node::TYPE_CONSTANT) {
ConstantNode *cn = static_cast<ConstantNode*>(op->arguments[0]);
DataType base=get_scalar_type(cn->datatype);
Vector<ConstantNode::Value> values;
for(int i=0;i<cn->values.size();i++) {
ConstantNode::Value nv;
switch(base) {
case TYPE_BOOL: {
nv.boolean=!cn->values[i].boolean;
} break;
case TYPE_INT: {
nv.sint=-cn->values[i].sint;
} break;
case TYPE_UINT: {
nv.uint=-cn->values[i].uint;
} break;
case TYPE_FLOAT: {
nv.real=-cn->values[i].real;
} break;
default: {}
}
values.push_back(nv);
}
cn->values=values;
return cn;
}
}
return p_node;
}
ShaderLanguage::Node* ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const Map<StringName,DataType> &p_builtin_types) {
ShaderLanguage::Node* expr = _parse_expression(p_block,p_builtin_types);
if (!expr) //errored
return NULL;
expr = _reduce_expression(p_block,expr);
return expr;
}
Error ShaderLanguage::_parse_block(BlockNode* p_block,const Map<StringName,DataType> &p_builtin_types,bool p_just_one,bool p_can_break,bool p_can_continue) {
while(true) {
TkPos pos = _get_tkpos();
Token tk = _get_token();
if (tk.type==TK_CURLY_BRACKET_CLOSE) { //end of block
if (p_just_one) {
_set_error("Unexpected '}'");
return ERR_PARSE_ERROR;
}
return OK;
} else if (is_token_precision(tk.type) || is_token_nonvoid_datatype(tk.type)) {
DataPrecision precision=PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
precision=get_token_precision(tk.type);
tk = _get_token();
if (!is_token_nonvoid_datatype(tk.type)) {
_set_error("Expected datatype after precission");
return ERR_PARSE_ERROR;
}
}
DataType type = get_token_datatype(tk.type);
tk = _get_token();
while(true) {
if (tk.type!=TK_IDENTIFIER) {
_set_error("Expected identifier after type");
return ERR_PARSE_ERROR;
}
StringName name = tk.text;
if (_find_identifier(p_block,p_builtin_types,name)) {
_set_error("Redefinition of '"+String(name)+"'");
return ERR_PARSE_ERROR;
}
BlockNode::Variable var;
var.type=type;
var.precision=precision;
var.line=tk_line;
p_block->variables[name]=var;
tk = _get_token();
if (tk.type==TK_OP_ASSIGN) {
//variable creted with assignment! must parse an expression
Node* n = _parse_and_reduce_expression(p_block,p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
OperatorNode *assign = alloc_node<OperatorNode>();
VariableNode *vnode = alloc_node<VariableNode>();
vnode->name=name;
vnode->datatype_cache=type;
assign->arguments.push_back(vnode);
assign->arguments.push_back(n);
assign->op=OP_ASSIGN;
p_block->statements.push_back(assign);
tk = _get_token();
}
if (tk.type==TK_COMMA) {
tk = _get_token();
//another variable
} else if (tk.type==TK_SEMICOLON) {
break;
} else {
_set_error("Expected ',' or ';' after variable");
return ERR_PARSE_ERROR;
}
}
} else if (tk.type==TK_CURLY_BRACKET_OPEN) {
//a sub block, just because..
BlockNode* block = alloc_node<BlockNode>();
block->parent_block=p_block;
_parse_block(block,p_builtin_types,false,p_can_break,p_can_continue);
p_block->statements.push_back(block);
} else if (tk.type==TK_CF_IF) {
//if () {}
tk = _get_token();
if (tk.type!=TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after if");
return ERR_PARSE_ERROR;
}
ControlFlowNode *cf = alloc_node<ControlFlowNode>();
cf->flow_op=FLOW_OP_IF;
Node* n = _parse_and_reduce_expression(p_block,p_builtin_types);
if (!n)
return ERR_PARSE_ERROR;
tk = _get_token();
if (tk.type!=TK_PARENTHESIS_CLOSE) {
_set_error("Expected '(' after expression");
return ERR_PARSE_ERROR;
}
BlockNode* block = alloc_node<BlockNode>();
block->parent_block=p_block;
cf->expressions.push_back(n);
cf->blocks.push_back(block);
p_block->statements.push_back(cf);
Error err=_parse_block(block,p_builtin_types,true,p_can_break,p_can_continue);
pos=_get_tkpos();
tk = _get_token();
if (tk.type==TK_CF_ELSE) {
block = alloc_node<BlockNode>();
block->parent_block=p_block;
cf->blocks.push_back(block);
err=_parse_block(block,p_builtin_types,true,p_can_break,p_can_continue);
} else {
_set_tkpos(pos); //rollback
}
} else {
//nothng else, so expression
_set_tkpos(pos); //rollback
Node*expr = _parse_and_reduce_expression(p_block,p_builtin_types);
if (!expr)
return ERR_PARSE_ERROR;
p_block->statements.push_back(expr);
tk = _get_token();
if (tk.type!=TK_SEMICOLON) {
_set_error("Expected ';' after statement");
return ERR_PARSE_ERROR;
}
}
if (p_just_one)
break;
}
return OK;
}
Error ShaderLanguage::_parse_shader(const Map< StringName, Map<StringName,DataType> > &p_functions, const Set<String> &p_render_modes) {
Token tk = _get_token();
int texture_uniforms = 0;
int uniforms =0;
while(tk.type!=TK_EOF) {
switch(tk.type) {
case TK_RENDER_MODE: {
while(true) {
StringName mode;
_get_completable_identifier(NULL,COMPLETION_RENDER_MODE,mode);
if (mode==StringName()) {
_set_error("Expected identifier for render mode");
return ERR_PARSE_ERROR;
}
if (!p_render_modes.has(mode)) {
_set_error("Invalid render mode: '"+String(mode)+"'");
return ERR_PARSE_ERROR;
}
if (shader->render_modes.find(mode)!=-1) {
_set_error("Duplicate render mode: '"+String(mode)+"'");
return ERR_PARSE_ERROR;
}
shader->render_modes.push_back(mode);
tk = _get_token();
if (tk.type==TK_COMMA) {
//all good, do nothing
} else if (tk.type==TK_SEMICOLON) {
break; //done
} else {
_set_error("Unexpected token: "+get_token_text(tk));
return ERR_PARSE_ERROR;
}
}
} break;
case TK_UNIFORM:
case TK_VARYING: {
bool uniform = tk.type==TK_UNIFORM;
DataPrecision precision = PRECISION_DEFAULT;
DataType type;
StringName name;
tk = _get_token();
if (is_token_precision(tk.type)) {
precision=get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected datatype. ");
return ERR_PARSE_ERROR;
}
type = get_token_datatype(tk.type);
if (type==TYPE_VOID) {
_set_error("void datatype not allowed here");
return ERR_PARSE_ERROR;
}
if (!uniform && type<TYPE_FLOAT && type>TYPE_VEC4) {
_set_error("Invalid type for varying, only float,vec2,vec3,vec4 allowed.");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type!=TK_IDENTIFIER) {
_set_error("Expected identifier!");
return ERR_PARSE_ERROR;
}
name=tk.text;
if (_find_identifier(NULL,Map<StringName,DataType>(),name)) {
_set_error("Redefinition of '"+String(name)+"'");
return ERR_PARSE_ERROR;
}
if (uniform) {
ShaderNode::Uniform uniform;
if (is_sampler_type(type)) {
uniform.texture_order=texture_uniforms++;
uniform.order=-1;
} else {
uniform.texture_order=-1;
uniform.order=uniforms++;
}
uniform.type=type;
uniform.precission=precision;
//todo parse default value
tk = _get_token();
if (tk.type==TK_OP_ASSIGN) {
Node* expr = _parse_and_reduce_expression(NULL,Map<StringName,DataType>());
if (!expr)
return ERR_PARSE_ERROR;
if (expr->type!=Node::TYPE_CONSTANT) {
_set_error("Expected constant expression after '='");
return ERR_PARSE_ERROR;
}
ConstantNode* cn = static_cast<ConstantNode*>(expr);
uniform.default_value.resize(cn->values.size());
if (!convert_constant(cn,uniform.type,uniform.default_value.ptr())) {
_set_error("Can't convert constant to "+get_datatype_name(uniform.type));
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
if (tk.type==TK_COLON) {
//hint
tk = _get_token();
if (tk.type==TK_HINT_WHITE_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_WHITE;
} else if (tk.type==TK_HINT_BLACK_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_BLACK;
} else if (tk.type==TK_HINT_NORMAL_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_NORMAL;
} else if (tk.type==TK_HINT_ANISO_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_ANISO;
} else if (tk.type==TK_HINT_ALBEDO_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_ALBEDO;
} else if (tk.type==TK_HINT_BLACK_ALBEDO_TEXTURE) {
uniform.hint=ShaderNode::Uniform::HINT_BLACK_ALBEDO;
} else if (tk.type==TK_HINT_COLOR) {
if (type!=TYPE_VEC4) {
_set_error("Color hint is for vec4 only");
return ERR_PARSE_ERROR;
}
uniform.hint=ShaderNode::Uniform::HINT_COLOR;
} else if (tk.type==TK_HINT_RANGE) {
uniform.hint=ShaderNode::Uniform::HINT_RANGE;
if (type!=TYPE_FLOAT && type!=TYPE_INT) {
_set_error("Range hint is for float and int only");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type!=TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after hint_range");
return ERR_PARSE_ERROR;
}
tk = _get_token();
float sign=1.0;
if (tk.type==TK_OP_SUB) {
sign=-1.0;
tk = _get_token();
}
if (tk.type!=TK_REAL_CONSTANT && tk.type!=TK_INT_CONSTANT) {
_set_error("Expected integer constant");
return ERR_PARSE_ERROR;
}
uniform.hint_range[0]=tk.constant;
uniform.hint_range[0]*=sign;
tk = _get_token();
if (tk.type!=TK_COMMA) {
_set_error("Expected ',' after integer constant");
return ERR_PARSE_ERROR;
}
tk = _get_token();
sign=1.0;
if (tk.type==TK_OP_SUB) {
sign=-1.0;
tk = _get_token();
}
if (tk.type!=TK_REAL_CONSTANT && tk.type!=TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform.hint_range[1]=tk.constant;
uniform.hint_range[1]*=sign;
tk = _get_token();
if (tk.type==TK_COMMA) {
tk = _get_token();
if (tk.type!=TK_REAL_CONSTANT && tk.type!=TK_INT_CONSTANT) {
_set_error("Expected integer constant after ','");
return ERR_PARSE_ERROR;
}
uniform.hint_range[2]=tk.constant;
tk = _get_token();
} else {
if (type==TYPE_INT) {
uniform.hint_range[2]=1;
} else {
uniform.hint_range[2]=0.001;
}
}
if (tk.type!=TK_PARENTHESIS_CLOSE) {
_set_error("Expected ','");
return ERR_PARSE_ERROR;
}
} else {
_set_error("Expected valid type hint after ':'.");
}
if (uniform.hint!=ShaderNode::Uniform::HINT_RANGE && uniform.hint!=ShaderNode::Uniform::HINT_NONE && uniform.hint!=ShaderNode::Uniform::HINT_COLOR && type <=TYPE_MAT4) {
_set_error("This hint is only for sampler types");
return ERR_PARSE_ERROR;
}
tk = _get_token();
}
shader->uniforms[name]=uniform;
if (tk.type!=TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
} else {
ShaderNode::Varying varying;
varying.type=type;
varying.precission=precision;
shader->varyings[name]=varying;
tk = _get_token();
if (tk.type!=TK_SEMICOLON) {
_set_error("Expected ';'");
return ERR_PARSE_ERROR;
}
}
} break;
default: {
//function
DataPrecision precision = PRECISION_DEFAULT;
DataType type;
StringName name;
if (is_token_precision(tk.type)) {
precision=get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected funtion, uniform or varying ");
return ERR_PARSE_ERROR;
}
type = get_token_datatype(tk.type);
_get_completable_identifier(NULL,COMPLETION_MAIN_FUNCTION,name);
if (name==StringName()) {
_set_error("Expected function name after datatype");
return ERR_PARSE_ERROR;
}
if (_find_identifier(NULL,Map<StringName,DataType>(),name)) {
_set_error("Redefinition of '"+String(name)+"'");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type!=TK_PARENTHESIS_OPEN) {
_set_error("Expected '(' after identifier");
return ERR_PARSE_ERROR;
}
Map<StringName,DataType> builtin_types;
if (p_functions.has(name)) {
builtin_types=p_functions[name];
}
ShaderNode::Function function;
function.callable=!p_functions.has(name);
function.name=name;
FunctionNode* func_node=alloc_node<FunctionNode>();
function.function=func_node;
shader->functions.push_back(function);
func_node->name=name;
func_node->return_type=type;
func_node->return_precision=precision;
func_node->body = alloc_node<BlockNode>();
func_node->body->parent_function=func_node;
tk = _get_token();
while(true) {
if (tk.type==TK_PARENTHESIS_CLOSE) {
break;
}
DataType ptype;
StringName pname;
DataPrecision pprecision = PRECISION_DEFAULT;
if (is_token_precision(tk.type)) {
pprecision=get_token_precision(tk.type);
tk = _get_token();
}
if (!is_token_datatype(tk.type)) {
_set_error("Expected a valid datatype for argument");
return ERR_PARSE_ERROR;
}
ptype=get_token_datatype(tk.type);
if (ptype==TYPE_VOID) {
_set_error("void not allowed in argument");
return ERR_PARSE_ERROR;
}
tk = _get_token();
if (tk.type!=TK_IDENTIFIER) {
_set_error("Expected identifier for argument name");
return ERR_PARSE_ERROR;
}
pname = tk.text;
if (_find_identifier(func_node->body,builtin_types,pname)) {
_set_error("Redefinition of '"+String(pname)+"'");
return ERR_PARSE_ERROR;
}
FunctionNode::Argument arg;
arg.type=ptype;
arg.name=pname;
arg.precision=pprecision;
func_node->arguments.push_back(arg);
tk = _get_token();
if (tk.type==TK_COMMA) {
tk = _get_token();
//do none and go on
} else if (tk.type!=TK_PARENTHESIS_CLOSE) {
_set_error("Expected ',' or ')' after identifier");
return ERR_PARSE_ERROR;
}
}
if (p_functions.has(name)) {
//if one of the core functions, make sure they are of the correct form
if (func_node->arguments.size() > 0) {
_set_error("Function '"+String(name)+"' expects no arguments.");
return ERR_PARSE_ERROR;
}
if (func_node->return_type!=TYPE_VOID) {
_set_error("Function '"+String(name)+"' must be of void return type.");
return ERR_PARSE_ERROR;
}
}
//all good let's parse inside the fucntion!
tk = _get_token();
if (tk.type!=TK_CURLY_BRACKET_OPEN) {
_set_error("Expected '{' to begin function");
return ERR_PARSE_ERROR;
}
current_function = name;
Error err = _parse_block(func_node->body,builtin_types);
if (err)
return err;
current_function=StringName();
}
}
tk = _get_token();
}
return OK;
}
Error ShaderLanguage::compile(const String& p_code, const Map< StringName, Map<StringName,DataType> > &p_functions, const Set<String> &p_render_modes) {
clear();
code=p_code;
nodes=NULL;
shader = alloc_node<ShaderNode>();
Error err = _parse_shader(p_functions,p_render_modes);
if (err!=OK) {
return err;
}
return OK;
}
Error ShaderLanguage::complete(const String& p_code,const Map< StringName, Map<StringName,DataType> > &p_functions,const Set<String>& p_render_modes,List<String>* r_options,String& r_call_hint) {
clear();
code=p_code;
nodes=NULL;
shader = alloc_node<ShaderNode>();
Error err = _parse_shader(p_functions,p_render_modes);
switch(completion_type) {
case COMPLETION_NONE: {
//do none
return ERR_PARSE_ERROR;
} break;
case COMPLETION_RENDER_MODE: {
for(const Set<String>::Element *E=p_render_modes.front();E;E=E->next()) {
r_options->push_back(E->get());
}
return OK;
} break;
case COMPLETION_MAIN_FUNCTION: {
for(const Map< StringName, Map<StringName,DataType> >::Element *E=p_functions.front();E;E=E->next()) {
r_options->push_back(E->key());
}
return OK;
} break;
case COMPLETION_IDENTIFIER:
case COMPLETION_FUNCTION_CALL: {
bool comp_ident=completion_type==COMPLETION_IDENTIFIER;
Set<String> matches;
StringName skip_function;
BlockNode *block=completion_block;
while(block) {
if (comp_ident) {
for (const Map<StringName,BlockNode::Variable>::Element *E=block->variables.front();E;E=E->next()) {
if (E->get().line<completion_line) {
matches.insert(E->key());
}
}
}
if (block->parent_function) {
if (comp_ident) {
for(int i=0;i<block->parent_function->arguments.size();i++) {
matches.insert(block->parent_function->arguments[i].name);
}
}
skip_function=block->parent_function->name;
}
block=block->parent_block;
}
if (comp_ident && skip_function!=StringName() && p_functions.has(skip_function)) {
for (Map<StringName,DataType>::Element *E=p_functions[skip_function].front();E;E=E->next()) {
matches.insert(E->key());
}
}
if (comp_ident) {
for (const Map<StringName,ShaderNode::Varying>::Element *E=shader->varyings.front();E;E=E->next()) {
matches.insert(E->key());
}
for (const Map<StringName,ShaderNode::Uniform>::Element *E=shader->uniforms.front();E;E=E->next()) {
matches.insert(E->key());
}
}
for(int i=0;i<shader->functions.size();i++) {
if (!shader->functions[i].callable || shader->functions[i].name==skip_function)
continue;
matches.insert(String(shader->functions[i].name)+"(");
}
int idx=0;
while (builtin_func_defs[idx].name) {
matches.insert(String(builtin_func_defs[idx].name)+"(");
idx++;
}
for(Set<String>::Element *E=matches.front();E;E=E->next()) {
r_options->push_back(E->get());
}
return OK;
} break;
case COMPLETION_CALL_ARGUMENTS: {
for(int i=0;i<shader->functions.size();i++) {
if (!shader->functions[i].callable)
continue;
if (shader->functions[i].name==completion_function) {
String calltip;
calltip+=get_datatype_name( shader->functions[i].function->return_type );
calltip+=" ";
calltip+=shader->functions[i].name;
calltip+="(";
for(int j=0;j<shader->functions[i].function->arguments.size();j++) {
if (j>0)
calltip+=", ";
else
calltip+=" ";
if (j==completion_argument) {
calltip+=CharType(0xFFFF);
}
calltip+=get_datatype_name(shader->functions[i].function->arguments[j].type);
calltip+=" ";
calltip+=shader->functions[i].function->arguments[j].name;
if (j==completion_argument) {
calltip+=CharType(0xFFFF);
}
}
if (shader->functions[i].function->arguments.size())
calltip+=" ";
calltip+=")";
r_call_hint=calltip;
return OK;
}
}
int idx=0;
String calltip;
while (builtin_func_defs[idx].name) {
if (completion_function==builtin_func_defs[idx].name) {
if (calltip.length())
calltip+="\n";
calltip+=get_datatype_name( builtin_func_defs[idx].rettype );
calltip+=" ";
calltip+=builtin_func_defs[idx].name;
calltip+="(";
bool found_arg=false;
for(int i=0;i<4;i++) {
if (builtin_func_defs[idx].args[i]==TYPE_VOID)
break;
if (i>0)
calltip+=", ";
else
calltip+=" ";
if (i==completion_argument) {
calltip+=CharType(0xFFFF);
}
calltip+=get_datatype_name(builtin_func_defs[idx].args[i]);
if (i==completion_argument) {
calltip+=CharType(0xFFFF);
}
found_arg=true;
}
if (found_arg)
calltip+=" ";
calltip+=")";
}
idx++;
}
r_call_hint=calltip;
return OK;
} break;
case COMPLETION_INDEX: {
const char colv[4]={'r','g','b','a'};
const char coordv[4]={'x','y','z','w'};
int limit=0;
switch(completion_base) {
case TYPE_BVEC2:
case TYPE_IVEC2:
case TYPE_UVEC2:
case TYPE_VEC2: {
limit=2;
} break;
case TYPE_BVEC3:
case TYPE_IVEC3:
case TYPE_UVEC3:
case TYPE_VEC3: {
limit=3;
} break;
case TYPE_BVEC4:
case TYPE_IVEC4:
case TYPE_UVEC4:
case TYPE_VEC4: {
limit=4;
} break;
case TYPE_MAT2: limit=2; break;
case TYPE_MAT3: limit=3; break;
case TYPE_MAT4: limit=4; break;
default: {}
}
for(int i=0;i<limit;i++) {
r_options->push_back(String::chr(colv[i]));
r_options->push_back(String::chr(coordv[i]));
}
} break;
}
return ERR_PARSE_ERROR;
}
String ShaderLanguage::get_error_text() {
return error_str;
}
int ShaderLanguage::get_error_line() {
return error_line;
}
ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() {
return shader;
}
ShaderLanguage::ShaderLanguage() {
nodes=NULL;
}
ShaderLanguage::~ShaderLanguage() {
clear();
}