static Error recreate_code(void *p_str, SL::ShaderNode *p_program) {
String *str = (String *)p_str;
*str = dump_node_code(p_program, 0);
return OK;
}
static String dump_node_code(SL::Node *p_node, int p_level) {
String code;
switch (p_node->type) {
case SL::Node::TYPE_SHADER: {
SL::ShaderNode *pnode = (SL::ShaderNode *)p_node;
for (Map<StringName, SL::ShaderNode::Uniform>::Element *E = pnode->uniforms.front(); E; E = E->next()) {
String ucode = "uniform ";
ucode += _prestr(E->get().precission);
ucode += _typestr(E->get().type);
ucode += " " + String(E->key());
if (E->get().default_value.size()) {
ucode += " = " + get_constant_text(E->get().type, E->get().default_value);
}
static const char *hint_name[SL::ShaderNode::Uniform::HINT_MAX] = {
"",
"color",
"range",
"albedo",
"normal",
"black",
"white"
};
if (E->get().hint)
ucode += " : " + String(hint_name[E->get().hint]);
code += ucode + "\n";
}
for (Map<StringName, SL::ShaderNode::Varying>::Element *E = pnode->varyings.front(); E; E = E->next()) {
String vcode = "varying ";
vcode += _prestr(E->get().precission);
vcode += _typestr(E->get().type);
vcode += " " + String(E->key());
code += vcode + "\n";
}
for (int i = 0; i < pnode->functions.size(); i++) {
SL::FunctionNode *fnode = pnode->functions[i].function;
String header;
header = _typestr(fnode->return_type) + " " + fnode->name + "(";
for (int i = 0; i < fnode->arguments.size(); i++) {
if (i > 0)
header += ", ";
header += _prestr(fnode->arguments[i].precision) + _typestr(fnode->arguments[i].type) + " " + fnode->arguments[i].name;
}
header += ")\n";
code += header;
code += dump_node_code(fnode->body, p_level + 1);
}
//code+=dump_node_code(pnode->body,p_level);
} break;
case SL::Node::TYPE_FUNCTION: {
} break;
case SL::Node::TYPE_BLOCK: {
SL::BlockNode *bnode = (SL::BlockNode *)p_node;
//variables
code += _mktab(p_level - 1) + "{\n";
for (Map<StringName, SL::BlockNode::Variable>::Element *E = bnode->variables.front(); E; E = E->next()) {
code += _mktab(p_level) + _prestr(E->get().precision) + _typestr(E->get().type) + " " + E->key() + ";\n";
}
for (int i = 0; i < bnode->statements.size(); i++) {
String scode = dump_node_code(bnode->statements[i], p_level);
if (bnode->statements[i]->type == SL::Node::TYPE_CONTROL_FLOW || bnode->statements[i]->type == SL::Node::TYPE_CONTROL_FLOW) {
code += scode; //use directly
} else {
code += _mktab(p_level) + scode + ";\n";
}
}
code += _mktab(p_level - 1) + "}\n";
} break;
case SL::Node::TYPE_VARIABLE: {
SL::VariableNode *vnode = (SL::VariableNode *)p_node;
code = vnode->name;
} break;
case SL::Node::TYPE_CONSTANT: {
SL::ConstantNode *cnode = (SL::ConstantNode *)p_node;
return get_constant_text(cnode->datatype, cnode->values);
} break;
case SL::Node::TYPE_OPERATOR: {
SL::OperatorNode *onode = (SL::OperatorNode *)p_node;
switch (onode->op) {
case SL::OP_ASSIGN:
case SL::OP_ASSIGN_ADD:
case SL::OP_ASSIGN_SUB:
case SL::OP_ASSIGN_MUL:
case SL::OP_ASSIGN_DIV:
case SL::OP_ASSIGN_SHIFT_LEFT:
case SL::OP_ASSIGN_SHIFT_RIGHT:
case SL::OP_ASSIGN_MOD:
case SL::OP_ASSIGN_BIT_AND:
case SL::OP_ASSIGN_BIT_OR:
case SL::OP_ASSIGN_BIT_XOR:
code = dump_node_code(onode->arguments[0], p_level) + _opstr(onode->op) + dump_node_code(onode->arguments[1], p_level);
break;
case SL::OP_BIT_INVERT:
case SL::OP_NEGATE:
case SL::OP_NOT:
case SL::OP_DECREMENT:
case SL::OP_INCREMENT:
code = _opstr(onode->op) + dump_node_code(onode->arguments[0], p_level);
break;
case SL::OP_POST_DECREMENT:
case SL::OP_POST_INCREMENT:
code = dump_node_code(onode->arguments[0], p_level) + _opstr(onode->op);
break;
case SL::OP_CALL:
case SL::OP_CONSTRUCT:
code = dump_node_code(onode->arguments[0], p_level) + "(";
for (int i = 1; i < onode->arguments.size(); i++) {
if (i > 1)
code += ", ";
code += dump_node_code(onode->arguments[i], p_level);
}
code += ")";
break;
default: {
code = "(" + dump_node_code(onode->arguments[0], p_level) + _opstr(onode->op) + dump_node_code(onode->arguments[1], p_level) + ")";
break;
}
}
} break;
case SL::Node::TYPE_CONTROL_FLOW: {
SL::ControlFlowNode *cfnode = (SL::ControlFlowNode *)p_node;
if (cfnode->flow_op == SL::FLOW_OP_IF) {
code += _mktab(p_level) + "if (" + dump_node_code(cfnode->expressions[0], p_level) + ")\n";
code += dump_node_code(cfnode->blocks[0], p_level + 1);
if (cfnode->blocks.size() == 2) {
code += _mktab(p_level) + "else\n";
code += dump_node_code(cfnode->blocks[1], p_level + 1);
}
} else if (cfnode->flow_op == SL::FLOW_OP_RETURN) {
if (cfnode->blocks.size()) {
code = "return " + dump_node_code(cfnode->blocks[0], p_level);
} else {
code = "return";
}
}
} break;
case SL::Node::TYPE_MEMBER: {
SL::MemberNode *mnode = (SL::MemberNode *)p_node;
code = dump_node_code(mnode->owner, p_level) + "." + mnode->name;
} break;
}
return code;
}
Error ShaderCompilerGLES2::compile_node(SL::ProgramNode *p_program) {
// feed the local replace table and global code
global_code="";
// uniforms first!
int ubase=0;
if (uniforms)
ubase=uniforms->size();
for(Map<StringName,SL::Uniform>::Element *E=p_program->uniforms.front();E;E=E->next()) {
String uline="uniform "+_typestr(E->get().type)+" _"+E->key().operator String()+";"ENDL;
global_code+=uline;
if (uniforms) {
//if (uniforms->has(E->key())) {
// //repeated uniform, error
// ERR_EXPLAIN("Uniform already exists from other shader: "+String(E->key()));
// ERR_FAIL_COND_V(uniforms->has(E->key()),ERR_ALREADY_EXISTS);
//
// }
SL::Uniform u = E->get();
u.order+=ubase;
uniforms->insert(E->key(),u);
}
}
for(int i=0;i<p_program->functions.size();i++) {
SL::FunctionNode *fnode=p_program->functions[i].function;
StringName funcname=fnode->name;
String newfuncname=replace_string(funcname);
String header;
header=_typestr(fnode->return_type)+" "+newfuncname+"(";
for(int i=0;i<fnode->arguments.size();i++) {
if (i>0)
header+=", ";
header+=_typestr(fnode->arguments[i].type)+" "+replace_string(fnode->arguments[i].name);
}
header+=") {"ENDL;
String fcode=header;
fcode+=dump_node_code(fnode->body,1);
fcode+="}"ENDL;
global_code+=fcode;
}
/* for(Map<StringName,SL::DataType>::Element *E=p_program->preexisting_variables.front();E;E=E->next()) {
StringName varname=E->key();
String newvarname=replace_string(varname);
global_code+="uniform "+_typestr(E->get())+" "+newvarname+";"ENDL;
}*/
code=dump_node_code(p_program,0);
#ifdef DEBUG_SHADER_ENABLED
print_line("GLOBAL CODE:\n\n");
print_line(global_code);
global_code=global_code.replace("\n","");
print_line("CODE:\n\n");
print_line(code);
code=code.replace("\n","");
#endif
return OK;
}
String ShaderCompilerGLES2::dump_node_code(SL::Node *p_node,int p_level,bool p_assign_left) {
String code;
switch(p_node->type) {
case SL::Node::TYPE_PROGRAM: {
SL::ProgramNode *pnode=(SL::ProgramNode*)p_node;
code+=dump_node_code(pnode->body,p_level);
} break;
case SL::Node::TYPE_FUNCTION: {
} break;
case SL::Node::TYPE_BLOCK: {
SL::BlockNode *bnode=(SL::BlockNode*)p_node;
//variables
for(Map<StringName,SL::DataType>::Element *E=bnode->variables.front();E;E=E->next()) {
code+=_mktab(p_level)+_typestr(E->value())+" "+replace_string(E->key())+";"ENDL;
}
for(int i=0;i<bnode->statements.size();i++) {
code+=_mktab(p_level)+dump_node_code(bnode->statements[i],p_level)+";"ENDL;
}
} break;
case SL::Node::TYPE_VARIABLE: {
SL::VariableNode *vnode=(SL::VariableNode*)p_node;
if (type==ShaderLanguage::SHADER_MATERIAL_VERTEX) {
if (vnode->name==vname_vertex && p_assign_left) {
vertex_code_writes_vertex=true;
}
}
if (type==ShaderLanguage::SHADER_MATERIAL_FRAGMENT) {
if (vnode->name==vname_discard) {
uses_discard=true;
}
if (vnode->name==vname_screen_uv) {
uses_screen_uv=true;
}
if (vnode->name==vname_diffuse_alpha && p_assign_left) {
uses_alpha=true;
}
if (vnode->name==vname_color_interp) {
flags->use_color_interp=true;
}
if (vnode->name==vname_uv_interp) {
flags->use_uv_interp=true;
}
if (vnode->name==vname_uv2_interp) {
flags->use_uv2_interp=true;
}
if (vnode->name==vname_var1_interp) {
flags->use_var1_interp=true;
}
if (vnode->name==vname_var2_interp) {
flags->use_var2_interp=true;
}
if (vnode->name==vname_tangent_interp || vnode->name==vname_binormal_interp) {
flags->use_tangent_interp=true;
}
}
if (type==ShaderLanguage::SHADER_MATERIAL_LIGHT) {
if (vnode->name==vname_light) {
uses_light=true;
}
}
if (vnode->name==vname_time) {
uses_time=true;
}
code=replace_string(vnode->name);
} break;
case SL::Node::TYPE_CONSTANT: {
SL::ConstantNode *cnode=(SL::ConstantNode*)p_node;
switch(cnode->datatype) {
case SL::TYPE_BOOL: code=cnode->value.operator bool()?"true":"false"; break;
case SL::TYPE_FLOAT: code=_mknum(cnode->value); break; //force zeros, so GLSL doesn't confuse with integer.
case SL::TYPE_VEC2: { Vector2 v = cnode->value; code="vec2("+_mknum(v.x)+", "+_mknum(v.y)+")"; } break;
case SL::TYPE_VEC3: { Vector3 v = cnode->value; code="vec3("+_mknum(v.x)+", "+_mknum(v.y)+", "+_mknum(v.z)+")"; } break;
case SL::TYPE_VEC4: { Plane v = cnode->value; code="vec4("+_mknum(v.normal.x)+", "+_mknum(v.normal.y)+", "+_mknum(v.normal.z)+", "+_mknum(v.d)+")"; } break;
case SL::TYPE_MAT3: { Matrix3 x = cnode->value; code="mat3( vec3("+_mknum(x.get_axis(0).x)+", "+_mknum(x.get_axis(0).y)+", "+_mknum(x.get_axis(0).z)+"), vec3("+_mknum(x.get_axis(1).x)+", "+_mknum(x.get_axis(1).y)+", "+_mknum(x.get_axis(1).z)+"), vec3("+_mknum(x.get_axis(2).x)+", "+_mknum(x.get_axis(2).y)+", "+_mknum(x.get_axis(2).z)+"))"; } break;
case SL::TYPE_MAT4: { Transform x = cnode->value; code="mat4( vec4("+_mknum(x.basis.get_axis(0).x)+", "+_mknum(x.basis.get_axis(0).y)+", "+_mknum(x.basis.get_axis(0).z)+",0.0), vec4("+_mknum(x.basis.get_axis(1).x)+", "+_mknum(x.basis.get_axis(1).y)+", "+_mknum(x.basis.get_axis(1).z)+",0.0), vec4("+_mknum(x.basis.get_axis(2).x)+", "+_mknum(x.basis.get_axis(2).y)+", "+_mknum(x.basis.get_axis(2).z)+",0.0), vec4("+_mknum(x.origin.x)+", "+_mknum(x.origin.y)+", "+_mknum(x.origin.z)+",1.0))"; } break;
default: code="<error: "+Variant::get_type_name(cnode->value.get_type())+" ("+itos(cnode->datatype)+">";
}
} break;
case SL::Node::TYPE_OPERATOR: {
SL::OperatorNode *onode=(SL::OperatorNode*)p_node;
switch(onode->op) {
case SL::OP_ASSIGN_MUL: {
if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC3 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT4) {
String mul_l=dump_node_code(onode->arguments[0],p_level,true);
String mul_r=dump_node_code(onode->arguments[1],p_level);
code=mul_l+"=(vec4("+mul_l+",1.0)*("+mul_r+")).xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_MAT4 && onode->arguments[1]->get_datatype()==SL::TYPE_VEC3) {
String mul_l=dump_node_code(onode->arguments[0],p_level,true);
String mul_r=dump_node_code(onode->arguments[1],p_level);
code=mul_l+"=(("+mul_l+")*vec4("+mul_r+",1.0)).xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC2 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT4) {
String mul_l=dump_node_code(onode->arguments[0],p_level,true);
String mul_r=dump_node_code(onode->arguments[1],p_level);
code=mul_l+"=(vec4("+mul_l+",1.0,1.0)*("+mul_r+")).xy";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_MAT4 && onode->arguments[1]->get_datatype()==SL::TYPE_VEC2) {
String mul_l=dump_node_code(onode->arguments[0],p_level,true);
String mul_r=dump_node_code(onode->arguments[1],p_level);
code=mul_l+"=(("+mul_l+")*vec4("+mul_r+",1.0,1.0)).xy";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC2 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT3) {
String mul_l=dump_node_code(onode->arguments[0],p_level,true);
String mul_r=dump_node_code(onode->arguments[1],p_level);
code=mul_l+"=(("+mul_l+")*vec3("+mul_r+",1.0)).xy";
break;
}
};
case SL::OP_ASSIGN:
case SL::OP_ASSIGN_ADD:
case SL::OP_ASSIGN_SUB:
case SL::OP_ASSIGN_DIV:
code="("+dump_node_code(onode->arguments[0],p_level,true)+_opstr(onode->op)+dump_node_code(onode->arguments[1],p_level)+")";
break;
case SL::OP_MUL:
if (onode->arguments[0]->get_datatype()==SL::TYPE_MAT4 && onode->arguments[1]->get_datatype()==SL::TYPE_VEC3) {
code="("+dump_node_code(onode->arguments[0],p_level)+"*vec4("+dump_node_code(onode->arguments[1],p_level)+",1.0)).xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC3 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT4) {
code="(vec4("+dump_node_code(onode->arguments[0],p_level)+",1.0)*"+dump_node_code(onode->arguments[1],p_level)+").xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_MAT4 && onode->arguments[1]->get_datatype()==SL::TYPE_VEC2) {
code="("+dump_node_code(onode->arguments[0],p_level)+"*vec4("+dump_node_code(onode->arguments[1],p_level)+",1.0,1.0)).xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC2 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT4) {
code="(vec4("+dump_node_code(onode->arguments[0],p_level)+",1.0,1.0)*"+dump_node_code(onode->arguments[1],p_level)+").xyz";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_MAT3 && onode->arguments[1]->get_datatype()==SL::TYPE_VEC2) {
code="("+dump_node_code(onode->arguments[0],p_level)+"*vec3("+dump_node_code(onode->arguments[1],p_level)+",1.0)).xy";
break;
} else if (onode->arguments[0]->get_datatype()==SL::TYPE_VEC2 && onode->arguments[1]->get_datatype()==SL::TYPE_MAT3) {
code="(vec3("+dump_node_code(onode->arguments[0],p_level)+",1.0)*"+dump_node_code(onode->arguments[1],p_level)+").xy";
break;
}
case SL::OP_ADD:
case SL::OP_SUB:
case SL::OP_DIV:
case SL::OP_CMP_EQ:
case SL::OP_CMP_NEQ:
case SL::OP_CMP_LEQ:
case SL::OP_CMP_GEQ:
case SL::OP_CMP_LESS:
case SL::OP_CMP_GREATER:
case SL::OP_CMP_OR:
case SL::OP_CMP_AND:
//handle binary
code="("+dump_node_code(onode->arguments[0],p_level)+_opstr(onode->op)+dump_node_code(onode->arguments[1],p_level)+")";
break;
case SL::OP_NEG:
case SL::OP_NOT:
//handle unary
code=_opstr(onode->op)+dump_node_code(onode->arguments[0],p_level);
break;
case SL::OP_CONSTRUCT:
case SL::OP_CALL: {
String callfunc=dump_node_code(onode->arguments[0],p_level);
code=callfunc+"(";
/*if (callfunc=="mat4") {
//fix constructor for mat4
for(int i=1;i<onode->arguments.size();i++) {
if (i>1)
code+=", ";
//transform
code+="vec4( "+dump_node_code(onode->arguments[i],p_level)+(i==4?",1.0)":",0.0)");
}
} else*/ if (callfunc=="tex") {
code="texture2D( "+dump_node_code(onode->arguments[1],p_level)+","+dump_node_code(onode->arguments[2],p_level)+")";
break;
} else if (callfunc=="texcube") {
code="(textureCube( "+dump_node_code(onode->arguments[1],p_level)+",("+dump_node_code(onode->arguments[2],p_level)+")).xyz";
break;
} else if (callfunc=="texscreen") {
//create the call to sample the screen, and clamp it
uses_texscreen=true;
code="(texture2D( texscreen_tex, min(("+dump_node_code(onode->arguments[1],p_level)+").xy*texscreen_screen_mult,texscreen_screen_mult))).rgb";
//code="(texture2D( screen_texture, ("+dump_node_code(onode->arguments[1],p_level)+").xy).rgb";
break;
} else if (callfunc=="texpos") {
//create the call to sample the screen, and clamp it
uses_texpos=true;
code="get_texpos("+dump_node_code(onode->arguments[1],p_level)+"";
// code="get_texpos(gl_ProjectionMatrixInverse * texture2D( depth_texture, clamp(("+dump_node_code(onode->arguments[1],p_level)+").xy,vec2(0.0),vec2(1.0))*gl_LightSource[5].specular.zw+gl_LightSource[5].specular.xy)";
//code="(texture2D( screen_texture, ("+dump_node_code(onode->arguments[1],p_level)+").xy).rgb";
break;
} else {
for(int i=1;i<onode->arguments.size();i++) {
if (i>1)
code+=", ";
//transform
code+=dump_node_code(onode->arguments[i],p_level);
}
}
code+=")";
break;
} break;
default: {}
}
} break;
case SL::Node::TYPE_CONTROL_FLOW: {
SL::ControlFlowNode *cfnode=(SL::ControlFlowNode*)p_node;
if (cfnode->flow_op==SL::FLOW_OP_IF) {
code+="if ("+dump_node_code(cfnode->statements[0],p_level)+") {"ENDL;
code+=dump_node_code(cfnode->statements[1],p_level+1);
if (cfnode->statements.size()==3) {
code+="} else {"ENDL;
code+=dump_node_code(cfnode->statements[2],p_level+1);
}
code+="}"ENDL;
} else if (cfnode->flow_op==SL::FLOW_OP_RETURN) {
if (cfnode->statements.size()) {
code="return "+dump_node_code(cfnode->statements[0],p_level);
} else {
code="return";
}
}
} break;
case SL::Node::TYPE_MEMBER: {
SL::MemberNode *mnode=(SL::MemberNode*)p_node;
String m;
if (mnode->basetype==SL::TYPE_MAT4) {
if (mnode->name=="x")
m="[0]";
else if (mnode->name=="y")
m="[1]";
else if (mnode->name=="z")
m="[2]";
else if (mnode->name=="w")
m="[3]";
} else if (mnode->basetype==SL::TYPE_MAT3) {
if (mnode->name=="x")
m="[0]";
else if (mnode->name=="y")
m="[1]";
else if (mnode->name=="z")
m="[2]";
} else {
m="."+mnode->name;
}
code=dump_node_code(mnode->owner,p_level)+m;
} break;
}
return code;
}
