/*************************************************************************/
/*  material.cpp                                                         */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2014 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 "material.h"
#include "scene/scene_string_names.h"


static const char*_flag_names[Material::FLAG_MAX]={
	"visible",
	"double_sided",
	"invert_faces",
	"unshaded",
	"on_top",
	"lightmap_on_uv2",
	"colarray_is_srgb"
};


static const Material::Flag _flag_indices[Material::FLAG_MAX]={
	Material::FLAG_VISIBLE,
	Material::FLAG_DOUBLE_SIDED,
	Material::FLAG_INVERT_FACES,
	Material::FLAG_UNSHADED,
	Material::FLAG_ONTOP,
	Material::FLAG_LIGHTMAP_ON_UV2,
	Material::FLAG_COLOR_ARRAY_SRGB,
};


RID Material::get_rid() const {

	return material;
}

void Material::set_flag(Flag p_flag,bool p_enabled) {

	ERR_FAIL_INDEX(p_flag,FLAG_MAX);
	flags[p_flag]=p_enabled;
	VisualServer::get_singleton()->material_set_flag(material,(VS::MaterialFlag)p_flag,p_enabled);
	_change_notify();
}


void Material::set_blend_mode(BlendMode p_blend_mode) {

	ERR_FAIL_INDEX(p_blend_mode,3);
	blend_mode=p_blend_mode;
	VisualServer::get_singleton()->material_set_blend_mode(material,(VS::MaterialBlendMode)p_blend_mode);
	_change_notify();
}

Material::BlendMode Material::get_blend_mode() const {

	return blend_mode;
}


void Material::set_depth_draw_mode(DepthDrawMode p_depth_draw_mode) {

	depth_draw_mode=p_depth_draw_mode;
	VisualServer::get_singleton()->material_set_depth_draw_mode(material,(VS::MaterialDepthDrawMode)p_depth_draw_mode);
}

Material::DepthDrawMode Material::get_depth_draw_mode() const {

	return depth_draw_mode;
}

bool Material::get_flag(Flag p_flag) const {

	ERR_FAIL_INDEX_V(p_flag,FLAG_MAX,false);
	return flags[p_flag];
}

void Material::set_line_width(float p_width) {

	line_width=p_width;
	VisualServer::get_singleton()->material_set_line_width(material,p_width);
	_change_notify("line_width");
}

float Material::get_line_width() const {

	return line_width;
}


void Material::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("set_flag","flag","enable"),&Material::set_flag);
	ObjectTypeDB::bind_method(_MD("get_flag","flag"),&Material::get_flag);
	ObjectTypeDB::bind_method(_MD("set_blend_mode","mode"),&Material::set_blend_mode);
	ObjectTypeDB::bind_method(_MD("get_blend_mode"),&Material::get_blend_mode);
	ObjectTypeDB::bind_method(_MD("set_line_width","width"),&Material::set_line_width);
	ObjectTypeDB::bind_method(_MD("get_line_width"),&Material::get_line_width);
	ObjectTypeDB::bind_method(_MD("set_depth_draw_mode","mode"),&Material::set_depth_draw_mode);
	ObjectTypeDB::bind_method(_MD("get_depth_draw_mode"),&Material::get_depth_draw_mode);


	for(int i=0;i<FLAG_MAX;i++)
		ADD_PROPERTYI( PropertyInfo( Variant::BOOL, String()+"flags/"+_flag_names[i] ),_SCS("set_flag"),_SCS("get_flag"),_flag_indices[i]);

	ADD_PROPERTY( PropertyInfo( Variant::INT, "params/blend_mode",PROPERTY_HINT_ENUM,"Mix,Add,Sub,PMAlpha" ), _SCS("set_blend_mode"),_SCS("get_blend_mode"));
	ADD_PROPERTY( PropertyInfo( Variant::INT, "params/depth_draw",PROPERTY_HINT_ENUM,"Always,Opaque Only,Pre-Pass Alpha,Never" ), _SCS("set_depth_draw_mode"),_SCS("get_depth_draw_mode"));
	ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/line_width",PROPERTY_HINT_RANGE,"0.1,32.0,0.1" ), _SCS("set_line_width"),_SCS("get_line_width"));

	BIND_CONSTANT( FLAG_VISIBLE );
	BIND_CONSTANT( FLAG_DOUBLE_SIDED );
	BIND_CONSTANT( FLAG_INVERT_FACES );
	BIND_CONSTANT( FLAG_UNSHADED );
	BIND_CONSTANT( FLAG_ONTOP );
	BIND_CONSTANT( FLAG_LIGHTMAP_ON_UV2 );
	BIND_CONSTANT( FLAG_COLOR_ARRAY_SRGB );
	BIND_CONSTANT( FLAG_MAX );

	BIND_CONSTANT( DEPTH_DRAW_ALWAYS );
	BIND_CONSTANT( DEPTH_DRAW_OPAQUE_ONLY );
	BIND_CONSTANT( DEPTH_DRAW_OPAQUE_PRE_PASS_ALPHA );
	BIND_CONSTANT( DEPTH_DRAW_NEVER );

	BIND_CONSTANT( BLEND_MODE_MIX );
	BIND_CONSTANT( BLEND_MODE_ADD );
	BIND_CONSTANT( BLEND_MODE_SUB );
	BIND_CONSTANT( BLEND_MODE_MUL );
	BIND_CONSTANT( BLEND_MODE_PREMULT_ALPHA );

}

Material::Material(const RID& p_material) {

	material=p_material;

	flags[FLAG_VISIBLE]=true;
	flags[FLAG_DOUBLE_SIDED]=false;
	flags[FLAG_INVERT_FACES]=false;
	flags[FLAG_UNSHADED]=false;
	flags[FLAG_ONTOP]=false;
	flags[FLAG_LIGHTMAP_ON_UV2]=true;
	flags[FLAG_COLOR_ARRAY_SRGB]=false;

	depth_draw_mode=DEPTH_DRAW_OPAQUE_ONLY;

	blend_mode=BLEND_MODE_MIX;

}

Material::~Material() {

	VisualServer::get_singleton()->free(material);
}

static const char*_param_names[FixedMaterial::PARAM_MAX]={
	"diffuse",
	"detail",
	"specular",
	"emission",
	"specular_exp",
	"glow",
	"normal",
	"shade_param"
};

static const char*_full_param_names[FixedMaterial::PARAM_MAX]={
	"params/diffuse",
	"params/detail",
	"params/specular",
	"params/emission",
	"params/specular_exp",
	"params/glow",
	"params/normal",
	"params/shade_param"
};

/*
static const char*_texture_param_names[FixedMaterial::PARAM_MAX]={
	"tex_diffuse",
	"tex_detail",
	"tex_specular",
	"tex_emission",
	"tex_specular_exp",
	"tex_glow",
	"tex_detail_mix",
	"tex_normal",
	"tex_shade_param"
};
*/
static const FixedMaterial::Parameter _param_indices[FixedMaterial::PARAM_MAX]={
	FixedMaterial::PARAM_DIFFUSE,
	FixedMaterial::PARAM_DETAIL,
	FixedMaterial::PARAM_SPECULAR,
	FixedMaterial::PARAM_EMISSION,
	FixedMaterial::PARAM_SPECULAR_EXP,
	FixedMaterial::PARAM_GLOW,
	FixedMaterial::PARAM_NORMAL,
	FixedMaterial::PARAM_SHADE_PARAM,
};




void FixedMaterial::set_parameter(Parameter p_parameter, const Variant& p_value) {

	ERR_FAIL_INDEX(p_parameter,PARAM_MAX);
	if ((p_parameter==PARAM_DIFFUSE || p_parameter==PARAM_SPECULAR || p_parameter==PARAM_EMISSION)) {

		if (p_value.get_type()!=Variant::COLOR) {
			ERR_EXPLAIN(String(_param_names[p_parameter])+" expects Color");
			ERR_FAIL();
		}
	} else {

		if (!p_value.is_num()) {
			ERR_EXPLAIN(String(_param_names[p_parameter])+" expects scalar");
			ERR_FAIL();
		}
	}

	ERR_FAIL_COND( (p_parameter==PARAM_DIFFUSE || p_parameter==PARAM_SPECULAR || p_parameter==PARAM_EMISSION) && p_value.get_type()!=Variant::COLOR );
	ERR_FAIL_COND( p_parameter!=PARAM_SHADE_PARAM && p_parameter!=PARAM_DIFFUSE && p_parameter!=PARAM_DETAIL && p_parameter!=PARAM_SPECULAR && p_parameter!=PARAM_EMISSION && p_value.get_type()!=Variant::REAL && p_value.get_type()!=Variant::INT );

	param[p_parameter]=p_value;

	VisualServer::get_singleton()->fixed_material_set_param(material,(VS::FixedMaterialParam)p_parameter,p_value);

	_change_notify(_full_param_names[p_parameter]);
}

Variant FixedMaterial::get_parameter(Parameter p_parameter) const {
	ERR_FAIL_INDEX_V(p_parameter,PARAM_MAX,Variant());
	return param[p_parameter];
}



void FixedMaterial::set_texture(Parameter p_parameter, Ref<Texture> p_texture) {

	ERR_FAIL_INDEX(p_parameter,PARAM_MAX);

	texture_param[p_parameter]=p_texture;
	VisualServer::get_singleton()->fixed_material_set_texture(material,(VS::FixedMaterialParam)p_parameter,p_texture.is_null()?RID():p_texture->get_rid());

	_change_notify();
}
Ref<Texture> FixedMaterial::get_texture(Parameter p_parameter) const {

	ERR_FAIL_INDEX_V(p_parameter,PARAM_MAX,Ref<Texture>());
	return texture_param[p_parameter];
}

void FixedMaterial::set_texcoord_mode(Parameter p_parameter, TexCoordMode p_mode) {

	ERR_FAIL_INDEX(p_parameter,PARAM_MAX);
	ERR_FAIL_INDEX(p_mode,4);

	if (p_mode==texture_texcoord[p_parameter])
		return;

	texture_texcoord[p_parameter]=p_mode;

	VisualServer::get_singleton()->fixed_material_set_texcoord_mode(material,(VS::FixedMaterialParam)p_parameter,(VS::FixedMaterialTexCoordMode)p_mode);

	_change_notify();
}

FixedMaterial::TexCoordMode FixedMaterial::get_texcoord_mode(Parameter p_parameter) const {

	ERR_FAIL_INDEX_V(p_parameter,PARAM_MAX,TEXCOORD_UV);
	return texture_texcoord[p_parameter];
}

void FixedMaterial::set_light_shader(LightShader p_shader) {

	light_shader=p_shader;
	VS::get_singleton()->fixed_material_set_light_shader(material,VS::FixedMaterialLightShader(p_shader));
}

FixedMaterial::LightShader FixedMaterial::get_light_shader() const {

	return light_shader;
}


void FixedMaterial::set_uv_transform(const Transform& p_transform) {

	uv_transform=p_transform;
	VisualServer::get_singleton()->fixed_material_set_uv_transform(material, p_transform );
	_change_notify();
}

Transform FixedMaterial::get_uv_transform() const {

	return uv_transform;
}





void FixedMaterial::set_fixed_flag(FixedFlag p_flag, bool p_value) {
	ERR_FAIL_INDEX(p_flag,5);
	fixed_flags[p_flag]=p_value;
	VisualServer::get_singleton()->fixed_material_set_flag(material,(VS::FixedMaterialFlags)p_flag,p_value);

}

bool FixedMaterial::get_fixed_flag(FixedFlag p_flag) const {
	ERR_FAIL_INDEX_V(p_flag,5,false);
	return fixed_flags[p_flag];
}

void FixedMaterial::set_point_size(float p_size) {

	ERR_FAIL_COND(p_size<0);
	point_size=p_size;
	VisualServer::get_singleton()->fixed_material_set_point_size(material,p_size);
}

float FixedMaterial::get_point_size() const{


	return point_size;
}


void FixedMaterial::_bind_methods() {


	ObjectTypeDB::bind_method(_MD("set_parameter","param","value"),&FixedMaterial::set_parameter);
	ObjectTypeDB::bind_method(_MD("get_parameter","param"),&FixedMaterial::get_parameter);

	ObjectTypeDB::bind_method(_MD("set_texture","param","texture:Texture"),&FixedMaterial::set_texture);
	ObjectTypeDB::bind_method(_MD("get_texture:Texture","param"),&FixedMaterial::get_texture);


	ObjectTypeDB::bind_method(_MD("set_texcoord_mode","param","mode"),&FixedMaterial::set_texcoord_mode);
	ObjectTypeDB::bind_method(_MD("get_texcoord_mode","param"),&FixedMaterial::get_texcoord_mode);

	ObjectTypeDB::bind_method(_MD("set_fixed_flag","flag","value"),&FixedMaterial::set_fixed_flag);
	ObjectTypeDB::bind_method(_MD("get_fixed_flag","flag"),&FixedMaterial::get_fixed_flag);

	ObjectTypeDB::bind_method(_MD("set_uv_transform","transform"),&FixedMaterial::set_uv_transform);
	ObjectTypeDB::bind_method(_MD("get_uv_transform"),&FixedMaterial::get_uv_transform);

	ObjectTypeDB::bind_method(_MD("set_light_shader","shader"),&FixedMaterial::set_light_shader);
	ObjectTypeDB::bind_method(_MD("get_light_shader"),&FixedMaterial::get_light_shader);

	ObjectTypeDB::bind_method(_MD("set_point_size","size"),&FixedMaterial::set_point_size);
	ObjectTypeDB::bind_method(_MD("get_point_size"),&FixedMaterial::get_point_size);


	ADD_PROPERTYI( PropertyInfo( Variant::BOOL, "fixed_flags/use_alpha" ), _SCS("set_fixed_flag"), _SCS("get_fixed_flag"), FLAG_USE_ALPHA);
	ADD_PROPERTYI( PropertyInfo( Variant::BOOL, "fixed_flags/use_color_array" ), _SCS("set_fixed_flag"), _SCS("get_fixed_flag"), FLAG_USE_COLOR_ARRAY);
	ADD_PROPERTYI( PropertyInfo( Variant::BOOL, "fixed_flags/use_point_size" ), _SCS("set_fixed_flag"), _SCS("get_fixed_flag"), FLAG_USE_POINT_SIZE);
	ADD_PROPERTYI( PropertyInfo( Variant::BOOL, "fixed_flags/discard_alpha" ), _SCS("set_fixed_flag"), _SCS("get_fixed_flag"), FLAG_DISCARD_ALPHA);
	ADD_PROPERTYI( PropertyInfo( Variant::BOOL, "fixed_flags/use_xy_normalmap" ), _SCS("set_fixed_flag"), _SCS("get_fixed_flag"), FLAG_USE_XY_NORMALMAP);
	ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "params/diffuse" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_DIFFUSE);
	ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "params/specular", PROPERTY_HINT_COLOR_NO_ALPHA ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SPECULAR );
	ADD_PROPERTYI( PropertyInfo( Variant::COLOR, "params/emission", PROPERTY_HINT_COLOR_NO_ALPHA ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_EMISSION );
	ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/specular_exp", PROPERTY_HINT_RANGE,"1,64,0.01" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SPECULAR_EXP );
	ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/detail_mix", PROPERTY_HINT_RANGE,"0,1,0.01" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_DETAIL );
	ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/normal_depth", PROPERTY_HINT_RANGE,"-4,4,0.01" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_NORMAL );
	ADD_PROPERTY( PropertyInfo( Variant::INT, "params/shader", PROPERTY_HINT_ENUM,"Lambert,Wrap,Velvet,Toon" ), _SCS("set_light_shader"), _SCS("get_light_shader") );
	ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/shader_param", PROPERTY_HINT_RANGE,"0,1,0.01" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_SHADE_PARAM );
	ADD_PROPERTYI( PropertyInfo( Variant::REAL, "params/glow", PROPERTY_HINT_RANGE,"0,8,0.01" ), _SCS("set_parameter"), _SCS("get_parameter"), PARAM_GLOW );
	ADD_PROPERTY( PropertyInfo( Variant::REAL, "params/point_size", PROPERTY_HINT_RANGE,"0,1024,1" ), _SCS("set_point_size"), _SCS("get_point_size"));
	ADD_PROPERTY( PropertyInfo( Variant::TRANSFORM, "uv_xform"), _SCS("set_uv_transform"), _SCS("get_uv_transform") );

	for(int i=0;i<PARAM_MAX;i++) {
		ADD_PROPERTYI( PropertyInfo( Variant::OBJECT, String()+"textures/"+_param_names[i],PROPERTY_HINT_RESOURCE_TYPE,"Texture" ), _SCS("set_texture"), _SCS("get_texture"), _param_indices[i]);
		ADD_PROPERTYI( PropertyInfo( Variant::INT, String()+"textures/"+_param_names[i]+"_tc",PROPERTY_HINT_ENUM,"UV,UV Xform,UV2,Sphere" ), _SCS("set_texcoord_mode"), _SCS("get_texcoord_mode"), _param_indices[i] );
	}


	BIND_CONSTANT( PARAM_DIFFUSE );
	BIND_CONSTANT( PARAM_DETAIL );
	BIND_CONSTANT( PARAM_SPECULAR );
	BIND_CONSTANT( PARAM_EMISSION );
	BIND_CONSTANT( PARAM_SPECULAR_EXP );
	BIND_CONSTANT( PARAM_GLOW );
	BIND_CONSTANT( PARAM_NORMAL );
	BIND_CONSTANT( PARAM_SHADE_PARAM );
	BIND_CONSTANT( PARAM_MAX );


	BIND_CONSTANT( TEXCOORD_SPHERE );
	BIND_CONSTANT( TEXCOORD_UV );
	BIND_CONSTANT( TEXCOORD_UV_TRANSFORM );
	BIND_CONSTANT( TEXCOORD_UV2 );

	BIND_CONSTANT( FLAG_USE_ALPHA );
	BIND_CONSTANT( FLAG_USE_COLOR_ARRAY );
	BIND_CONSTANT( FLAG_USE_POINT_SIZE );
	BIND_CONSTANT( FLAG_DISCARD_ALPHA );

}


FixedMaterial::FixedMaterial() : Material(VS::get_singleton()->fixed_material_create()) {



	param[PARAM_DIFFUSE]=Color(1,1,1);
	param[PARAM_SPECULAR]=Color(0.0,0.0,0.0);
	param[PARAM_EMISSION]=Color(0.0,0.0,0.0);
	param[PARAM_SPECULAR_EXP]=40;
	param[PARAM_GLOW]=0;
	param[PARAM_NORMAL]=1;
	param[PARAM_SHADE_PARAM]=0.5;
	param[PARAM_DETAIL]=1.0;

	set_flag(FLAG_COLOR_ARRAY_SRGB,true);

	fixed_flags[FLAG_USE_ALPHA]=false;
	fixed_flags[FLAG_USE_COLOR_ARRAY]=false;
	fixed_flags[FLAG_USE_POINT_SIZE]=false;
	fixed_flags[FLAG_USE_XY_NORMALMAP]=false;
	fixed_flags[FLAG_DISCARD_ALPHA]=false;


	for(int i=0;i<PARAM_MAX;i++) {

		texture_texcoord[i]=TEXCOORD_UV;
	}

	light_shader=LIGHT_SHADER_LAMBERT;

	point_size=1.0;
}


FixedMaterial::~FixedMaterial() {

}




bool ShaderMaterial::_set(const StringName& p_name, const Variant& p_value) {

	if (p_name==SceneStringNames::get_singleton()->shader_shader) {
		set_shader(p_value);
		return true;
	} else {

		if (shader.is_valid()) {


			StringName pr = shader->remap_param(p_name);
			if (!pr) {
				String n = p_name;
				if (n.find("param/")==0) { //backwards compatibility
					pr = n.substr(6,n.length());
				}
			}
			if (pr) {
				VisualServer::get_singleton()->material_set_param(material,pr,p_value);
				return true;
			}
		}
	}

	return false;
}

bool ShaderMaterial::_get(const StringName& p_name,Variant &r_ret) const {


	if (p_name==SceneStringNames::get_singleton()->shader_shader) {

		r_ret=get_shader();
		return true;
	} else {

		if (shader.is_valid()) {

			StringName pr = shader->remap_param(p_name);
			if (pr) {
				r_ret=VisualServer::get_singleton()->material_get_param(material,pr);
				return true;
			}
		}

	}


	return false;
}


void ShaderMaterial::_get_property_list( List<PropertyInfo> *p_list) const {

	p_list->push_back( PropertyInfo( Variant::OBJECT, "shader/shader", PROPERTY_HINT_RESOURCE_TYPE,"MaterialShader,MaterialShaderGraph" ) );

	if (!shader.is_null()) {

		shader->get_param_list(p_list);
	}

}


void ShaderMaterial::_shader_changed() {

	_change_notify(); //also all may have changed then
}

void ShaderMaterial::set_shader(const Ref<Shader>& p_shader) {

	if (shader.is_valid())
		shader->disconnect(SceneStringNames::get_singleton()->changed,this,SceneStringNames::get_singleton()->_shader_changed);
	shader=p_shader;
	VS::get_singleton()->material_set_shader(material,shader.is_valid()?shader->get_rid():RID());
	if (shader.is_valid()) {
		shader->connect(SceneStringNames::get_singleton()->changed,this,SceneStringNames::get_singleton()->_shader_changed);
	}
	_change_notify();

}

Ref<Shader> ShaderMaterial::get_shader() const {

	return shader;
}


void ShaderMaterial::set_shader_param(const StringName& p_param,const Variant& p_value) {

	VisualServer::get_singleton()->material_set_param(material,p_param,p_value);

}

Variant ShaderMaterial::get_shader_param(const StringName& p_param) const{

	return VisualServer::get_singleton()->material_get_param(material,p_param);
}



void ShaderMaterial::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("set_shader","shader:Shader"), &ShaderMaterial::set_shader );
	ObjectTypeDB::bind_method(_MD("get_shader:Shader"), &ShaderMaterial::get_shader );

	ObjectTypeDB::bind_method(_MD("set_shader_param","param","value:var"), &ShaderMaterial::set_shader_param);
	ObjectTypeDB::bind_method(_MD("get_shader_param:var","param"), &ShaderMaterial::get_shader_param);

	ObjectTypeDB::bind_method(_MD("_shader_changed"), &ShaderMaterial::_shader_changed );
}


void ShaderMaterial::get_argument_options(const StringName& p_function,int p_idx,List<String>*r_options) const {

	String f = p_function.operator String();
	if ((f=="get_shader_param" || f=="set_shader_param") && p_idx==0) {

		if (shader.is_valid()) {
			List<PropertyInfo> pl;
			shader->get_param_list(&pl);
			for (List<PropertyInfo>::Element *E=pl.front();E;E=E->next()) {
				r_options->push_back("\""+E->get().name.replace_first("shader_param/","")+"\"");
			}
		}
	}
	Material::get_argument_options(p_function,p_idx,r_options);
}

ShaderMaterial::ShaderMaterial() :Material(VisualServer::get_singleton()->material_create()){


}


/////////////////////////////////