/*************************************************************************/
/*  material.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 "material.h"
#include "scene/scene_string_names.h"

RID Material::get_rid() const {

	return material;
}

Material::Material() {

	material = VisualServer::get_singleton()->material_create();
}

Material::~Material() {

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

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

Mutex *FixedSpatialMaterial::material_mutex = NULL;
SelfList<FixedSpatialMaterial>::List FixedSpatialMaterial::dirty_materials;
Map<FixedSpatialMaterial::MaterialKey, FixedSpatialMaterial::ShaderData> FixedSpatialMaterial::shader_map;
FixedSpatialMaterial::ShaderNames *FixedSpatialMaterial::shader_names = NULL;

void FixedSpatialMaterial::init_shaders() {

#ifndef NO_THREADS
	material_mutex = Mutex::create();
#endif

	shader_names = memnew(ShaderNames);

	shader_names->albedo = "albedo";
	shader_names->specular = "specular";
	shader_names->roughness = "roughness";
	shader_names->metalness = "metalness";
	shader_names->emission = "emission";
	shader_names->emission_energy = "emission_energy";
	shader_names->normal_scale = "normal_scale";
	shader_names->rim = "rim";
	shader_names->rim_tint = "rim_tint";
	shader_names->clearcoat = "clearcoat";
	shader_names->clearcoat_gloss = "clearcoat_gloss";
	shader_names->anisotropy = "anisotropy_ratio";
	shader_names->height_scale = "height_scale";
	shader_names->subsurface_scattering_strength = "subsurface_scattering_strength";
	shader_names->refraction = "refraction";
	shader_names->refraction_roughness = "refraction_roughness";
	shader_names->point_size = "point_size";
	shader_names->uv1_scale = "uv1_scale";
	shader_names->uv1_offset = "uv1_offset";
	shader_names->uv2_scale = "uv2_scale";
	shader_names->uv2_offset = "uv2_offset";

	shader_names->texture_names[TEXTURE_ALBEDO] = "texture_albedo";
	shader_names->texture_names[TEXTURE_SPECULAR] = "texture_specular";
	shader_names->texture_names[TEXTURE_EMISSION] = "texture_emission";
	shader_names->texture_names[TEXTURE_NORMAL] = "texture_normal";
	shader_names->texture_names[TEXTURE_RIM] = "texture_rim";
	shader_names->texture_names[TEXTURE_CLEARCOAT] = "texture_clearcoat";
	shader_names->texture_names[TEXTURE_FLOWMAP] = "texture_flowmap";
	shader_names->texture_names[TEXTURE_AMBIENT_OCCLUSION] = "texture_ambient_occlusion";
	shader_names->texture_names[TEXTURE_HEIGHT] = "texture_height";
	shader_names->texture_names[TEXTURE_SUBSURFACE_SCATTERING] = "texture_subsurface_scattering";
	shader_names->texture_names[TEXTURE_REFRACTION] = "texture_refraction";
	shader_names->texture_names[TEXTURE_REFRACTION_ROUGHNESS] = "texture_refraction_roughness";
	shader_names->texture_names[TEXTURE_DETAIL_MASK] = "texture_detail_mask";
	shader_names->texture_names[TEXTURE_DETAIL_ALBEDO] = "texture_detail_albedo";
	shader_names->texture_names[TEXTURE_DETAIL_NORMAL] = "texture_detail_normal";
}

void FixedSpatialMaterial::finish_shaders() {

#ifndef NO_THREADS
	memdelete(material_mutex);
#endif

	memdelete(shader_names);
}

void FixedSpatialMaterial::_update_shader() {

	dirty_materials.remove(&element);

	MaterialKey mk = _compute_key();
	if (mk.key == current_key.key)
		return; //no update required in the end

	if (shader_map.has(current_key)) {
		shader_map[current_key].users--;
		if (shader_map[current_key].users == 0) {
			//deallocate shader, as it's no longer in use
			VS::get_singleton()->free(shader_map[current_key].shader);
			shader_map.erase(current_key);
		}
	}

	current_key = mk;

	if (shader_map.has(mk)) {

		VS::get_singleton()->material_set_shader(_get_material(), shader_map[mk].shader);
		shader_map[mk].users++;
		return;
	}

	//must create a shader!

	String code = "render_mode ";
	switch (blend_mode) {
		case BLEND_MODE_MIX: code += "blend_mix"; break;
		case BLEND_MODE_ADD: code += "blend_add"; break;
		case BLEND_MODE_SUB: code += "blend_sub"; break;
		case BLEND_MODE_MUL: code += "blend_mul"; break;
	}

	switch (depth_draw_mode) {
		case DEPTH_DRAW_OPAQUE_ONLY: code += ",depth_draw_opaque"; break;
		case DEPTH_DRAW_ALWAYS: code += ",depth_draw_always"; break;
		case DEPTH_DRAW_DISABLED: code += ",depth_draw_never"; break;
		case DEPTH_DRAW_ALPHA_OPAQUE_PREPASS: code += ",depth_draw_alpha_prepass"; break;
	}

	switch (cull_mode) {
		case CULL_BACK: code += ",cull_back"; break;
		case CULL_FRONT: code += ",cull_front"; break;
		case CULL_DISABLED: code += ",cull_disabled"; break;
	}

	if (flags[FLAG_UNSHADED]) {
		code += ",unshaded";
	}
	if (flags[FLAG_ONTOP]) {
		code += ",ontop";
	}

	code += ";\n";

	code += "uniform vec4 albedo : hint_color;\n";
	code += "uniform sampler2D texture_albedo : hint_albedo;\n";
	if (specular_mode == SPECULAR_MODE_SPECULAR) {
		code += "uniform vec4 specular : hint_color;\n";
	} else {
		code += "uniform float metalness;\n";
	}

	code += "uniform float roughness : hint_range(0,1);\n";
	code += "uniform float point_size : hint_range(0,128);\n";
	code += "uniform sampler2D texture_specular : hint_white;\n";
	code += "uniform vec2 uv1_scale;\n";
	code += "uniform vec2 uv1_offset;\n";
	code += "uniform vec2 uv2_scale;\n";
	code += "uniform vec2 uv2_offset;\n";

	if (features[FEATURE_EMISSION]) {

		code += "uniform sampler2D texture_emission : hint_black_albedo;\n";
		code += "uniform vec4 emission : hint_color;\n";
		code += "uniform float emission_energy;\n";
	}

	if (features[FEATURE_NORMAL_MAPPING]) {
		code += "uniform sampler2D texture_normal : hint_normal;\n";
		code += "uniform float normal_scale : hint_range(-16,16);\n";
	}
	if (features[FEATURE_RIM]) {
		code += "uniform float rim : hint_range(0,1);\n";
		code += "uniform float rim_tint : hint_range(0,1);\n";
		code += "uniform sampler2D texture_rim : hint_white;\n";
	}
	if (features[FEATURE_CLEARCOAT]) {
		code += "uniform float clearcoat : hint_range(0,1);\n";
		code += "uniform float clearcoat_gloss : hint_range(0,1);\n";
		code += "uniform sampler2D texture_clearcoat : hint_white;\n";
	}
	if (features[FEATURE_ANISOTROPY]) {
		code += "uniform float anisotropy_ratio : hint_range(0,256);\n";
		code += "uniform sampler2D texture_flowmap : hint_aniso;\n";
	}
	if (features[FEATURE_AMBIENT_OCCLUSION]) {
		code += "uniform sampler2D texture_ambient_occlusion : hint_white;\n";
	}

	if (features[FEATURE_DETAIL]) {
		code += "uniform sampler2D texture_detail_albedo : hint_albedo;\n";
		code += "uniform sampler2D texture_detail_normal : hint_normal;\n";
		code += "uniform sampler2D texture_detail_mask : hint_white;\n";
	}

	if (features[FEATURE_SUBSURACE_SCATTERING]) {

		code += "uniform float subsurface_scattering_strength : hint_range(0,1);\n";
		code += "uniform sampler2D texture_subsurface_scattering : hint_white;\n";
	}

	code += "\n\n";

	code += "void vertex() {\n";

	if (flags[FLAG_SRGB_VERTEX_COLOR]) {

		code += "\tCOLOR.rgb = mix( pow((COLOR.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), COLOR.rgb* (1.0 / 12.92), lessThan(COLOR.rgb,vec3(0.04045)) );\n";
	}
	if (flags[FLAG_USE_POINT_SIZE]) {

		code += "\tPOINT_SIZE=point_size;\n";
	}
	code += "\tUV=UV*uv1_scale+uv1_offset;\n";
	if (detail_uv == DETAIL_UV_2) {
		code += "\tUV2=UV2*uv2_scale+uv2_offset;\n";
	}

	code += "}\n";
	code += "\n\n";
	code += "void fragment() {\n";

	if (flags[FLAG_USE_POINT_SIZE]) {
		code += "\tvec4 albedo_tex = texture(texture_albedo,POINT_COORD);\n";
	} else {
		code += "\tvec4 albedo_tex = texture(texture_albedo,UV);\n";
	}

	if (flags[FLAG_ALBEDO_FROM_VERTEX_COLOR]) {
		code += "\talbedo_tex *= COLOR;\n";
	}

	code += "\tALBEDO = albedo.rgb * albedo_tex.rgb;\n";
	if (features[FEATURE_TRANSPARENT]) {
		code += "\tALPHA = albedo.a * albedo_tex.a;\n";
	}

	if (features[FEATURE_EMISSION]) {
		code += "\tEMISSION = (emission.rgb+texture(texture_emission,UV).rgb)*emission_energy;\n";
	}

	if (features[FEATURE_NORMAL_MAPPING]) {
		code += "\tNORMALMAP = texture(texture_normal,UV).rgb;\n";
		code += "\tNORMALMAP_DEPTH = normal_scale;\n";
	}

	if (features[FEATURE_RIM]) {
		code += "\tvec2 rim_tex = texture(texture_rim,UV).xw;\n";
		code += "\tRIM = rim*rim_tex.x;";
		code += "\tRIM_TINT = rim_tint*rim_tex.y;\n";
	}

	if (features[FEATURE_CLEARCOAT]) {
		code += "\tvec2 clearcoat_tex = texture(texture_clearcoat,UV).xw;\n";
		code += "\tCLEARCOAT = clearcoat*clearcoat_tex.x;";
		code += "\tCLEARCOAT_GLOSS = clearcoat_gloss*clearcoat_tex.y;\n";
	}

	if (features[FEATURE_ANISOTROPY]) {
		code += "\tvec4 anisotropy_tex = texture(texture_flowmap,UV);\n";
		code += "\tANISOTROPY = anisotropy_ratio*anisotropy_tex.a;\n";
		code += "\tANISOTROPY_FLOW = anisotropy_tex.rg*2.0-1.0;\n";
	}

	if (features[FEATURE_AMBIENT_OCCLUSION]) {
		code += "\tAO = texture(texture_ambient_occlusion,UV).r;\n";
	}

	if (features[FEATURE_SUBSURACE_SCATTERING]) {

		code += "\tfloat sss_tex = texture(texture_subsurface_scattering,UV).r;\n";
		code += "\tSSS_STRENGTH=subsurface_scattering_strength*sss_tex;\n";
	}

	if (features[FEATURE_DETAIL]) {
		String det_uv = detail_uv == DETAIL_UV_1 ? "UV" : "UV2";
		code += "\tvec4 detail_tex = texture(texture_detail_albedo," + det_uv + ");\n";
		code += "\tvec4 detail_norm_tex = texture(texture_detail_normal," + det_uv + ");\n";
		code += "\tvec4 detail_mask_tex = texture(texture_detail_mask,UV);\n";

		switch (detail_blend_mode) {
			case BLEND_MODE_MIX: {
				code += "\tvec3 detail = mix(ALBEDO.rgb,detail_tex.rgb,detail_tex.a);\n";
			} break;
			case BLEND_MODE_ADD: {
				code += "\tvec3 detail = mix(ALBEDO.rgb,ALBEDO.rgb+detail_tex.rgb,detail_tex.a);\n";
			} break;
			case BLEND_MODE_SUB: {
				code += "\tvec3 detail = mix(ALBEDO.rgb,ALBEDO.rgb-detail_tex.rgb,detail_tex.a);\n";
			} break;
			case BLEND_MODE_MUL: {
				code += "\tvec3 detail = mix(ALBEDO.rgb,ALBEDO.rgb*detail_tex.rgb,detail_tex.a);\n";
			} break;
		}

		code += "\tvec3 detail_norm = mix(NORMALMAP,detail_norm_tex.rgb,detail_tex.a);\n";

		code += "\tNORMALMAP = mix(NORMALMAP,detail_norm,detail_mask_tex.r);\n";
		code += "\tALBEDO.rgb = mix(ALBEDO.rgb,detail,detail_mask_tex.r);\n";
	}

	if (specular_mode == SPECULAR_MODE_SPECULAR) {

		code += "\tvec4 specular_tex = texture(texture_specular,UV);\n";
		code += "\tSPECULAR = specular.rgb * specular_tex.rgb;\n";
		code += "\tROUGHNESS = specular_tex.a * roughness;\n";
	} else {
		code += "\tvec4 specular_tex = texture(texture_specular,UV);\n";
		code += "\tSPECULAR = vec3(ALBEDO.rgb * metalness * specular_tex.r);\n";
		code += "\tROUGHNESS = specular_tex.a * roughness;\n";
	}

	code += "}\n";

	ShaderData shader_data;
	shader_data.shader = VS::get_singleton()->shader_create(VS::SHADER_SPATIAL);
	shader_data.users = 1;

	VS::get_singleton()->shader_set_code(shader_data.shader, code);

	shader_map[mk] = shader_data;

	VS::get_singleton()->material_set_shader(_get_material(), shader_data.shader);
}

void FixedSpatialMaterial::flush_changes() {

	if (material_mutex)
		material_mutex->lock();

	while (dirty_materials.first()) {

		dirty_materials.first()->self()->_update_shader();
	}

	if (material_mutex)
		material_mutex->unlock();
}

void FixedSpatialMaterial::_queue_shader_change() {

	if (material_mutex)
		material_mutex->lock();

	if (!element.in_list()) {
		dirty_materials.add(&element);
	}

	if (material_mutex)
		material_mutex->unlock();
}

bool FixedSpatialMaterial::_is_shader_dirty() const {

	bool dirty = false;

	if (material_mutex)
		material_mutex->lock();

	dirty = element.in_list();

	if (material_mutex)
		material_mutex->unlock();

	return dirty;
}
void FixedSpatialMaterial::set_albedo(const Color &p_albedo) {

	albedo = p_albedo;

	VS::get_singleton()->material_set_param(_get_material(), shader_names->albedo, p_albedo);
}

Color FixedSpatialMaterial::get_albedo() const {

	return albedo;
}

void FixedSpatialMaterial::set_specular_mode(SpecularMode p_mode) {
	specular_mode = p_mode;
	_change_notify();
	_queue_shader_change();
}

FixedSpatialMaterial::SpecularMode FixedSpatialMaterial::get_specular_mode() const {

	return specular_mode;
}

void FixedSpatialMaterial::set_specular(const Color &p_specular) {

	specular = p_specular;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->specular, p_specular);
}
Color FixedSpatialMaterial::get_specular() const {

	return specular;
}

void FixedSpatialMaterial::set_roughness(float p_roughness) {

	roughness = p_roughness;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->roughness, p_roughness);
}

float FixedSpatialMaterial::get_roughness() const {

	return roughness;
}

void FixedSpatialMaterial::set_metalness(float p_metalness) {

	metalness = p_metalness;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->metalness, p_metalness);
}

float FixedSpatialMaterial::get_metalness() const {

	return metalness;
}

void FixedSpatialMaterial::set_emission(const Color &p_emission) {

	emission = p_emission;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->emission, p_emission);
}
Color FixedSpatialMaterial::get_emission() const {

	return emission;
}

void FixedSpatialMaterial::set_emission_energy(float p_emission_energy) {

	emission_energy = p_emission_energy;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->emission_energy, p_emission_energy);
}
float FixedSpatialMaterial::get_emission_energy() const {

	return emission_energy;
}

void FixedSpatialMaterial::set_normal_scale(float p_normal_scale) {

	normal_scale = p_normal_scale;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->normal_scale, p_normal_scale);
}
float FixedSpatialMaterial::get_normal_scale() const {

	return normal_scale;
}

void FixedSpatialMaterial::set_rim(float p_rim) {

	rim = p_rim;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->rim, p_rim);
}
float FixedSpatialMaterial::get_rim() const {

	return rim;
}

void FixedSpatialMaterial::set_rim_tint(float p_rim_tint) {

	rim_tint = p_rim_tint;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->rim_tint, p_rim_tint);
}
float FixedSpatialMaterial::get_rim_tint() const {

	return rim_tint;
}

void FixedSpatialMaterial::set_clearcoat(float p_clearcoat) {

	clearcoat = p_clearcoat;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->clearcoat, p_clearcoat);
}

float FixedSpatialMaterial::get_clearcoat() const {

	return clearcoat;
}

void FixedSpatialMaterial::set_clearcoat_gloss(float p_clearcoat_gloss) {

	clearcoat_gloss = p_clearcoat_gloss;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->clearcoat_gloss, p_clearcoat_gloss);
}

float FixedSpatialMaterial::get_clearcoat_gloss() const {

	return clearcoat_gloss;
}

void FixedSpatialMaterial::set_anisotropy(float p_anisotropy) {

	anisotropy = p_anisotropy;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->anisotropy, p_anisotropy);
}
float FixedSpatialMaterial::get_anisotropy() const {

	return anisotropy;
}

void FixedSpatialMaterial::set_height_scale(float p_height_scale) {

	height_scale = p_height_scale;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->height_scale, p_height_scale);
}

float FixedSpatialMaterial::get_height_scale() const {

	return height_scale;
}

void FixedSpatialMaterial::set_subsurface_scattering_strength(float p_subsurface_scattering_strength) {

	subsurface_scattering_strength = p_subsurface_scattering_strength;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->subsurface_scattering_strength, subsurface_scattering_strength);
}

float FixedSpatialMaterial::get_subsurface_scattering_strength() const {

	return subsurface_scattering_strength;
}

void FixedSpatialMaterial::set_refraction(float p_refraction) {

	refraction = p_refraction;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->refraction, refraction);
}

float FixedSpatialMaterial::get_refraction() const {

	return refraction;
}

void FixedSpatialMaterial::set_refraction_roughness(float p_refraction_roughness) {

	refraction_roughness = p_refraction_roughness;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->refraction_roughness, refraction_roughness);
}
float FixedSpatialMaterial::get_refraction_roughness() const {

	return refraction_roughness;
}

void FixedSpatialMaterial::set_detail_uv(DetailUV p_detail_uv) {

	if (detail_uv == p_detail_uv)
		return;

	detail_uv = p_detail_uv;
	_queue_shader_change();
}
FixedSpatialMaterial::DetailUV FixedSpatialMaterial::get_detail_uv() const {

	return detail_uv;
}

void FixedSpatialMaterial::set_blend_mode(BlendMode p_mode) {

	if (blend_mode == p_mode)
		return;

	blend_mode = p_mode;
	_queue_shader_change();
}
FixedSpatialMaterial::BlendMode FixedSpatialMaterial::get_blend_mode() const {

	return blend_mode;
}

void FixedSpatialMaterial::set_detail_blend_mode(BlendMode p_mode) {

	detail_blend_mode = p_mode;
	_queue_shader_change();
}
FixedSpatialMaterial::BlendMode FixedSpatialMaterial::get_detail_blend_mode() const {

	return detail_blend_mode;
}

void FixedSpatialMaterial::set_depth_draw_mode(DepthDrawMode p_mode) {

	if (depth_draw_mode == p_mode)
		return;

	depth_draw_mode = p_mode;
	_queue_shader_change();
}
FixedSpatialMaterial::DepthDrawMode FixedSpatialMaterial::get_depth_draw_mode() const {

	return depth_draw_mode;
}

void FixedSpatialMaterial::set_cull_mode(CullMode p_mode) {

	if (cull_mode == p_mode)
		return;

	cull_mode = p_mode;
	_queue_shader_change();
}
FixedSpatialMaterial::CullMode FixedSpatialMaterial::get_cull_mode() const {

	return cull_mode;
}

void FixedSpatialMaterial::set_diffuse_mode(DiffuseMode p_mode) {

	if (diffuse_mode == p_mode)
		return;

	diffuse_mode = p_mode;
	_queue_shader_change();
}
FixedSpatialMaterial::DiffuseMode FixedSpatialMaterial::get_diffuse_mode() const {

	return diffuse_mode;
}

void FixedSpatialMaterial::set_flag(Flags p_flag, bool p_enabled) {

	ERR_FAIL_INDEX(p_flag, FLAG_MAX);

	if (flags[p_flag] == p_enabled)
		return;

	flags[p_flag] = p_enabled;
	_queue_shader_change();
}

bool FixedSpatialMaterial::get_flag(Flags p_flag) const {

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

void FixedSpatialMaterial::set_feature(Feature p_feature, bool p_enabled) {

	ERR_FAIL_INDEX(p_feature, FEATURE_MAX);
	if (features[p_feature] == p_enabled)
		return;

	features[p_feature] = p_enabled;
	_change_notify();
	_queue_shader_change();
}

bool FixedSpatialMaterial::get_feature(Feature p_feature) const {

	ERR_FAIL_INDEX_V(p_feature, FEATURE_MAX, false);
	return features[p_feature];
}

void FixedSpatialMaterial::set_texture(TextureParam p_param, const Ref<Texture> &p_texture) {

	ERR_FAIL_INDEX(p_param, TEXTURE_MAX);
	textures[p_param] = p_texture;
	RID rid = p_texture.is_valid() ? p_texture->get_rid() : RID();
	VS::get_singleton()->material_set_param(_get_material(), shader_names->texture_names[p_param], rid);
}

Ref<Texture> FixedSpatialMaterial::get_texture(TextureParam p_param) const {

	ERR_FAIL_INDEX_V(p_param, TEXTURE_MAX, Ref<Texture>());
	return textures[p_param];
}

void FixedSpatialMaterial::_validate_feature(const String &text, Feature feature, PropertyInfo &property) const {
	if (property.name.begins_with(text) && property.name != text + "_enabled" && !features[feature]) {
		property.usage = 0;
	}
}

void FixedSpatialMaterial::_validate_property(PropertyInfo &property) const {
	_validate_feature("normal", FEATURE_NORMAL_MAPPING, property);
	_validate_feature("emission", FEATURE_EMISSION, property);
	_validate_feature("rim", FEATURE_RIM, property);
	_validate_feature("clearcoat", FEATURE_CLEARCOAT, property);
	_validate_feature("anisotropy", FEATURE_ANISOTROPY, property);
	_validate_feature("ao", FEATURE_AMBIENT_OCCLUSION, property);
	_validate_feature("height", FEATURE_HEIGHT_MAPPING, property);
	_validate_feature("subsurf_scatter", FEATURE_SUBSURACE_SCATTERING, property);
	_validate_feature("refraction", FEATURE_REFRACTION, property);
	_validate_feature("detail", FEATURE_DETAIL, property);

	if (property.name == "specular/color" && specular_mode == SPECULAR_MODE_METALLIC) {
		property.usage = 0;
	}
	if (property.name == "specular/metalness" && specular_mode == SPECULAR_MODE_SPECULAR) {
		property.usage = 0;
	}
}

void FixedSpatialMaterial::set_line_width(float p_line_width) {

	line_width = p_line_width;
	VS::get_singleton()->material_set_line_width(_get_material(), line_width);
}

float FixedSpatialMaterial::get_line_width() const {

	return line_width;
}

void FixedSpatialMaterial::set_point_size(float p_point_size) {

	point_size = p_point_size;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->point_size, p_point_size);
}

float FixedSpatialMaterial::get_point_size() const {

	return point_size;
}

void FixedSpatialMaterial::set_uv1_scale(const Vector2 &p_scale) {

	uv1_scale = p_scale;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->uv1_scale, p_scale);
}

Vector2 FixedSpatialMaterial::get_uv1_scale() const {

	return uv1_scale;
}

void FixedSpatialMaterial::set_uv1_offset(const Vector2 &p_offset) {

	uv1_offset = p_offset;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->uv1_offset, p_offset);
}
Vector2 FixedSpatialMaterial::get_uv1_offset() const {

	return uv1_offset;
}

void FixedSpatialMaterial::set_uv2_scale(const Vector2 &p_scale) {

	uv2_scale = p_scale;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->uv2_scale, p_scale);
}

Vector2 FixedSpatialMaterial::get_uv2_scale() const {

	return uv2_scale;
}

void FixedSpatialMaterial::set_uv2_offset(const Vector2 &p_offset) {

	uv2_offset = p_offset;
	VS::get_singleton()->material_set_param(_get_material(), shader_names->uv2_offset, p_offset);
}

Vector2 FixedSpatialMaterial::get_uv2_offset() const {

	return uv2_offset;
}

void FixedSpatialMaterial::_bind_methods() {

	ClassDB::bind_method(D_METHOD("set_albedo", "albedo"), &FixedSpatialMaterial::set_albedo);
	ClassDB::bind_method(D_METHOD("get_albedo"), &FixedSpatialMaterial::get_albedo);

	ClassDB::bind_method(D_METHOD("set_specular_mode", "specular_mode"), &FixedSpatialMaterial::set_specular_mode);
	ClassDB::bind_method(D_METHOD("get_specular_mode"), &FixedSpatialMaterial::get_specular_mode);

	ClassDB::bind_method(D_METHOD("set_specular", "specular"), &FixedSpatialMaterial::set_specular);
	ClassDB::bind_method(D_METHOD("get_specular"), &FixedSpatialMaterial::get_specular);

	ClassDB::bind_method(D_METHOD("set_metalness", "metalness"), &FixedSpatialMaterial::set_metalness);
	ClassDB::bind_method(D_METHOD("get_metalness"), &FixedSpatialMaterial::get_metalness);

	ClassDB::bind_method(D_METHOD("set_roughness", "roughness"), &FixedSpatialMaterial::set_roughness);
	ClassDB::bind_method(D_METHOD("get_roughness"), &FixedSpatialMaterial::get_roughness);

	ClassDB::bind_method(D_METHOD("set_emission", "emission"), &FixedSpatialMaterial::set_emission);
	ClassDB::bind_method(D_METHOD("get_emission"), &FixedSpatialMaterial::get_emission);

	ClassDB::bind_method(D_METHOD("set_emission_energy", "emission_energy"), &FixedSpatialMaterial::set_emission_energy);
	ClassDB::bind_method(D_METHOD("get_emission_energy"), &FixedSpatialMaterial::get_emission_energy);

	ClassDB::bind_method(D_METHOD("set_normal_scale", "normal_scale"), &FixedSpatialMaterial::set_normal_scale);
	ClassDB::bind_method(D_METHOD("get_normal_scale"), &FixedSpatialMaterial::get_normal_scale);

	ClassDB::bind_method(D_METHOD("set_rim", "rim"), &FixedSpatialMaterial::set_rim);
	ClassDB::bind_method(D_METHOD("get_rim"), &FixedSpatialMaterial::get_rim);

	ClassDB::bind_method(D_METHOD("set_rim_tint", "rim_tint"), &FixedSpatialMaterial::set_rim_tint);
	ClassDB::bind_method(D_METHOD("get_rim_tint"), &FixedSpatialMaterial::get_rim_tint);

	ClassDB::bind_method(D_METHOD("set_clearcoat", "clearcoat"), &FixedSpatialMaterial::set_clearcoat);
	ClassDB::bind_method(D_METHOD("get_clearcoat"), &FixedSpatialMaterial::get_clearcoat);

	ClassDB::bind_method(D_METHOD("set_clearcoat_gloss", "clearcoat_gloss"), &FixedSpatialMaterial::set_clearcoat_gloss);
	ClassDB::bind_method(D_METHOD("get_clearcoat_gloss"), &FixedSpatialMaterial::get_clearcoat_gloss);

	ClassDB::bind_method(D_METHOD("set_anisotropy", "anisotropy"), &FixedSpatialMaterial::set_anisotropy);
	ClassDB::bind_method(D_METHOD("get_anisotropy"), &FixedSpatialMaterial::get_anisotropy);

	ClassDB::bind_method(D_METHOD("set_height_scale", "height_scale"), &FixedSpatialMaterial::set_height_scale);
	ClassDB::bind_method(D_METHOD("get_height_scale"), &FixedSpatialMaterial::get_height_scale);

	ClassDB::bind_method(D_METHOD("set_subsurface_scattering_strength", "strength"), &FixedSpatialMaterial::set_subsurface_scattering_strength);
	ClassDB::bind_method(D_METHOD("get_subsurface_scattering_strength"), &FixedSpatialMaterial::get_subsurface_scattering_strength);

	ClassDB::bind_method(D_METHOD("set_refraction", "refraction"), &FixedSpatialMaterial::set_refraction);
	ClassDB::bind_method(D_METHOD("get_refraction"), &FixedSpatialMaterial::get_refraction);

	ClassDB::bind_method(D_METHOD("set_refraction_roughness", "refraction_roughness"), &FixedSpatialMaterial::set_refraction_roughness);
	ClassDB::bind_method(D_METHOD("get_refraction_roughness"), &FixedSpatialMaterial::get_refraction_roughness);

	ClassDB::bind_method(D_METHOD("set_line_width", "line_width"), &FixedSpatialMaterial::set_line_width);
	ClassDB::bind_method(D_METHOD("get_line_width"), &FixedSpatialMaterial::get_line_width);

	ClassDB::bind_method(D_METHOD("set_point_size", "point_size"), &FixedSpatialMaterial::set_point_size);
	ClassDB::bind_method(D_METHOD("get_point_size"), &FixedSpatialMaterial::get_point_size);

	ClassDB::bind_method(D_METHOD("set_detail_uv", "detail_uv"), &FixedSpatialMaterial::set_detail_uv);
	ClassDB::bind_method(D_METHOD("get_detail_uv"), &FixedSpatialMaterial::get_detail_uv);

	ClassDB::bind_method(D_METHOD("set_blend_mode", "blend_mode"), &FixedSpatialMaterial::set_blend_mode);
	ClassDB::bind_method(D_METHOD("get_blend_mode"), &FixedSpatialMaterial::get_blend_mode);

	ClassDB::bind_method(D_METHOD("set_depth_draw_mode", "depth_draw_mode"), &FixedSpatialMaterial::set_depth_draw_mode);
	ClassDB::bind_method(D_METHOD("get_depth_draw_mode"), &FixedSpatialMaterial::get_depth_draw_mode);

	ClassDB::bind_method(D_METHOD("set_cull_mode", "cull_mode"), &FixedSpatialMaterial::set_cull_mode);
	ClassDB::bind_method(D_METHOD("get_cull_mode"), &FixedSpatialMaterial::get_cull_mode);

	ClassDB::bind_method(D_METHOD("set_diffuse_mode", "diffuse_mode"), &FixedSpatialMaterial::set_diffuse_mode);
	ClassDB::bind_method(D_METHOD("get_diffuse_mode"), &FixedSpatialMaterial::get_diffuse_mode);

	ClassDB::bind_method(D_METHOD("set_flag", "flag", "enable"), &FixedSpatialMaterial::set_flag);
	ClassDB::bind_method(D_METHOD("get_flag"), &FixedSpatialMaterial::get_flag);

	ClassDB::bind_method(D_METHOD("set_feature", "feature", "enable"), &FixedSpatialMaterial::set_feature);
	ClassDB::bind_method(D_METHOD("get_feature", "feature"), &FixedSpatialMaterial::get_feature);

	ClassDB::bind_method(D_METHOD("set_texture", "param:Texture", "texture"), &FixedSpatialMaterial::set_texture);
	ClassDB::bind_method(D_METHOD("get_texture:Texture", "param:Texture"), &FixedSpatialMaterial::get_texture);

	ClassDB::bind_method(D_METHOD("set_detail_blend_mode", "detail_blend_mode"), &FixedSpatialMaterial::set_detail_blend_mode);
	ClassDB::bind_method(D_METHOD("get_detail_blend_mode"), &FixedSpatialMaterial::get_detail_blend_mode);

	ClassDB::bind_method(D_METHOD("set_uv1_scale", "scale"), &FixedSpatialMaterial::set_uv1_scale);
	ClassDB::bind_method(D_METHOD("get_uv1_scale"), &FixedSpatialMaterial::get_uv1_scale);

	ClassDB::bind_method(D_METHOD("set_uv1_offset", "offset"), &FixedSpatialMaterial::set_uv1_offset);
	ClassDB::bind_method(D_METHOD("get_uv1_offset"), &FixedSpatialMaterial::get_uv1_offset);

	ClassDB::bind_method(D_METHOD("set_uv2_scale", "scale"), &FixedSpatialMaterial::set_uv2_scale);
	ClassDB::bind_method(D_METHOD("get_uv2_scale"), &FixedSpatialMaterial::get_uv2_scale);

	ClassDB::bind_method(D_METHOD("set_uv2_offset", "offset"), &FixedSpatialMaterial::set_uv2_offset);
	ClassDB::bind_method(D_METHOD("get_uv2_offset"), &FixedSpatialMaterial::get_uv2_offset);

	ADD_GROUP("Flags", "flags_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "flags_transparent"), "set_feature", "get_feature", FEATURE_TRANSPARENT);
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "flags_unshaded"), "set_flag", "get_flag", FLAG_UNSHADED);
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "flags_on_top"), "set_flag", "get_flag", FLAG_ONTOP);
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "flags_use_point_size"), "set_flag", "get_flag", FLAG_USE_POINT_SIZE);
	ADD_GROUP("Vertex Color", "vertex_color");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "vertex_color_use_as_albedo"), "set_flag", "get_flag", FLAG_ALBEDO_FROM_VERTEX_COLOR);
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "vertex_color_is_srgb"), "set_flag", "get_flag", FLAG_SRGB_VERTEX_COLOR);

	ADD_GROUP("Parameters", "params_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "params_diffuse_mode", PROPERTY_HINT_ENUM, "Labert,Lambert Wrap,Oren Nayar,Burley"), "set_diffuse_mode", "get_diffuse_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "params_blend_mode", PROPERTY_HINT_ENUM, "Mix,Add,Sub,Mul"), "set_blend_mode", "get_blend_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "params_cull_mode", PROPERTY_HINT_ENUM, "Back,Front,Disabled"), "set_cull_mode", "get_cull_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "params_depth_draw_mode", PROPERTY_HINT_ENUM, "Opaque Only,Always,Never,Opaque Pre-Pass"), "set_depth_draw_mode", "get_depth_draw_mode");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "params_line_width", PROPERTY_HINT_RANGE, "0.1,128,0.1"), "set_line_width", "get_line_width");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "params_point_size", PROPERTY_HINT_RANGE, "0.1,128,0.1"), "set_point_size", "get_point_size");

	ADD_GROUP("Albedo", "albedo_");
	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "albedo_color"), "set_albedo", "get_albedo");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "albedo_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_ALBEDO);

	ADD_GROUP("Specular", "specular_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "specular_mode", PROPERTY_HINT_ENUM, "Metallic,Specular"), "set_specular_mode", "get_specular_mode");
	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "specular_color", PROPERTY_HINT_COLOR_NO_ALPHA), "set_specular", "get_specular");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "specular_metalness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_metalness", "get_metalness");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "specular_roughness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_roughness", "get_roughness");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "specular_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_SPECULAR);

	ADD_GROUP("Emission", "emission_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "emission_enabled"), "set_feature", "get_feature", FEATURE_EMISSION);
	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "emission_color", PROPERTY_HINT_COLOR_NO_ALPHA), "set_emission", "get_emission");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "emission_energy", PROPERTY_HINT_RANGE, "0,16,0.01"), "set_emission_energy", "get_emission_energy");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "emission_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_EMISSION);

	ADD_GROUP("NormalMap", "normal_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "normal_enabled"), "set_feature", "get_feature", FEATURE_NORMAL_MAPPING);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "normal_scale", PROPERTY_HINT_RANGE, "-16,16,0.01"), "set_normal_scale", "get_normal_scale");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "normal_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_NORMAL);

	ADD_GROUP("Rim", "rim_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "rim_enabled"), "set_feature", "get_feature", FEATURE_RIM);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "rim_amount", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_rim", "get_rim");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "rim_tint", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_rim_tint", "get_rim_tint");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "rim_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_RIM);

	ADD_GROUP("Clearcoat", "clearcoat_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "clearcoat_enabled"), "set_feature", "get_feature", FEATURE_CLEARCOAT);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "clearcoat_amount", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_clearcoat", "get_clearcoat");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "clearcoat_gloss", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_clearcoat_gloss", "get_clearcoat_gloss");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "clearcoat_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_CLEARCOAT);

	ADD_GROUP("Anisotropy", "anisotropy_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "anisotropy_enabled"), "set_feature", "get_feature", FEATURE_ANISOTROPY);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "anisotropy_anisotropy", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_anisotropy", "get_anisotropy");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "anisotropy_flowmap", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_FLOWMAP);

	ADD_GROUP("Ambient Occlusion", "ao_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "ao_enabled"), "set_feature", "get_feature", FEATURE_AMBIENT_OCCLUSION);
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "ao_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_AMBIENT_OCCLUSION);

	ADD_GROUP("Height", "height_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "height_enabled"), "set_feature", "get_feature", FEATURE_HEIGHT_MAPPING);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "height_scale", PROPERTY_HINT_RANGE, "-16,16,0.01"), "set_height_scale", "get_height_scale");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "height_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_HEIGHT);

	ADD_GROUP("Subsurf Scatter", "subsurf_scatter_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "subsurf_scatter_enabled"), "set_feature", "get_feature", FEATURE_SUBSURACE_SCATTERING);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "subsurf_scatter_strength", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_subsurface_scattering_strength", "get_subsurface_scattering_strength");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "subsurf_scatter_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_SUBSURFACE_SCATTERING);

	ADD_GROUP("Refraction", "refraction_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "refraction_enabled"), "set_feature", "get_feature", FEATURE_REFRACTION);
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "refraction_displacement", PROPERTY_HINT_RANGE, "-1,1,0.01"), "set_refraction", "get_refraction");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "refraction_roughness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_refraction_roughness", "get_refraction_roughness");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "refraction_texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_REFRACTION);

	ADD_GROUP("Detail", "detail_");
	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "detail_enabled"), "set_feature", "get_feature", FEATURE_DETAIL);
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "detail_mask", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_DETAIL_MASK);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "detail_blend_mode", PROPERTY_HINT_ENUM, "Mix,Add,Sub,Mul"), "set_detail_blend_mode", "get_detail_blend_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "detail_uv_layer", PROPERTY_HINT_ENUM, "UV1,UV2"), "set_detail_uv", "get_detail_uv");
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "detail_albedo", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_DETAIL_ALBEDO);
	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "detail_normal", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_texture", "get_texture", TEXTURE_DETAIL_NORMAL);

	ADD_GROUP("UV1", "uv1_");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "uv1_scale"), "set_uv1_scale", "get_uv1_scale");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "uv1_offset"), "set_uv1_offset", "get_uv1_offset");

	ADD_GROUP("UV2", "uv2_");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "uv2_scale"), "set_uv2_scale", "get_uv2_scale");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "uv2_offset"), "set_uv2_offset", "get_uv2_offset");

	BIND_CONSTANT(TEXTURE_ALBEDO);
	BIND_CONSTANT(TEXTURE_SPECULAR);
	BIND_CONSTANT(TEXTURE_EMISSION);
	BIND_CONSTANT(TEXTURE_NORMAL);
	BIND_CONSTANT(TEXTURE_RIM);
	BIND_CONSTANT(TEXTURE_CLEARCOAT);
	BIND_CONSTANT(TEXTURE_FLOWMAP);
	BIND_CONSTANT(TEXTURE_AMBIENT_OCCLUSION);
	BIND_CONSTANT(TEXTURE_HEIGHT);
	BIND_CONSTANT(TEXTURE_SUBSURFACE_SCATTERING);
	BIND_CONSTANT(TEXTURE_REFRACTION);
	BIND_CONSTANT(TEXTURE_REFRACTION_ROUGHNESS);
	BIND_CONSTANT(TEXTURE_DETAIL_MASK);
	BIND_CONSTANT(TEXTURE_DETAIL_ALBEDO);
	BIND_CONSTANT(TEXTURE_DETAIL_NORMAL);
	BIND_CONSTANT(TEXTURE_MAX);

	BIND_CONSTANT(DETAIL_UV_1);
	BIND_CONSTANT(DETAIL_UV_2);

	BIND_CONSTANT(FEATURE_TRANSPARENT);
	BIND_CONSTANT(FEATURE_EMISSION);
	BIND_CONSTANT(FEATURE_NORMAL_MAPPING);
	BIND_CONSTANT(FEATURE_RIM);
	BIND_CONSTANT(FEATURE_CLEARCOAT);
	BIND_CONSTANT(FEATURE_ANISOTROPY);
	BIND_CONSTANT(FEATURE_AMBIENT_OCCLUSION);
	BIND_CONSTANT(FEATURE_HEIGHT_MAPPING);
	BIND_CONSTANT(FEATURE_SUBSURACE_SCATTERING);
	BIND_CONSTANT(FEATURE_REFRACTION);
	BIND_CONSTANT(FEATURE_DETAIL);
	BIND_CONSTANT(FEATURE_MAX);

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

	BIND_CONSTANT(DEPTH_DRAW_OPAQUE_ONLY);
	BIND_CONSTANT(DEPTH_DRAW_ALWAYS);
	BIND_CONSTANT(DEPTH_DRAW_DISABLED);
	BIND_CONSTANT(DEPTH_DRAW_ALPHA_OPAQUE_PREPASS);

	BIND_CONSTANT(CULL_BACK);
	BIND_CONSTANT(CULL_FRONT);
	BIND_CONSTANT(CULL_DISABLED);

	BIND_CONSTANT(FLAG_UNSHADED);
	BIND_CONSTANT(FLAG_ONTOP);
	BIND_CONSTANT(FLAG_ALBEDO_FROM_VERTEX_COLOR);
	BIND_CONSTANT(FLAG_SRGB_VERTEX_COLOR)
	BIND_CONSTANT(FLAG_USE_POINT_SIZE)
	BIND_CONSTANT(FLAG_MAX);

	BIND_CONSTANT(DIFFUSE_LAMBERT);
	BIND_CONSTANT(DIFFUSE_LAMBERT_WRAP);
	BIND_CONSTANT(DIFFUSE_OREN_NAYAR);
	BIND_CONSTANT(DIFFUSE_BURLEY);

	BIND_CONSTANT(SPECULAR_MODE_METALLIC);
	BIND_CONSTANT(SPECULAR_MODE_SPECULAR);
}

FixedSpatialMaterial::FixedSpatialMaterial()
	: element(this) {

	//initialize to right values
	specular_mode = SPECULAR_MODE_METALLIC;
	set_albedo(Color(0.7, 0.7, 0.7, 1.0));
	set_specular(Color(0.1, 0.1, 0.1));
	set_roughness(0.0);
	set_metalness(0.1);
	set_emission(Color(0, 0, 0));
	set_emission_energy(1.0);
	set_normal_scale(1);
	set_rim(1.0);
	set_rim_tint(0.5);
	set_clearcoat(1);
	set_clearcoat_gloss(0.5);
	set_anisotropy(0);
	set_height_scale(1);
	set_subsurface_scattering_strength(0);
	set_refraction(0);
	set_refraction_roughness(0);
	set_line_width(1);
	set_point_size(1);
	set_uv1_offset(Vector2(0, 0));
	set_uv1_scale(Vector2(1, 1));
	set_uv2_offset(Vector2(0, 0));
	set_uv2_scale(Vector2(1, 1));

	detail_uv = DETAIL_UV_1;
	blend_mode = BLEND_MODE_MIX;
	detail_blend_mode = BLEND_MODE_MIX;
	depth_draw_mode = DEPTH_DRAW_OPAQUE_ONLY;
	cull_mode = CULL_BACK;
	for (int i = 0; i < FLAG_MAX; i++) {
		flags[i] = 0;
	}
	diffuse_mode = DIFFUSE_LAMBERT;

	for (int i = 0; i < FEATURE_MAX; i++) {
		features[i] = false;
	}

	current_key.key = 0;
	current_key.invalid_key = 1;
	_queue_shader_change();
}

FixedSpatialMaterial::~FixedSpatialMaterial() {

	if (material_mutex)
		material_mutex->lock();

	if (shader_map.has(current_key)) {
		shader_map[current_key].users--;
		if (shader_map[current_key].users == 0) {
			//deallocate shader, as it's no longer in use
			VS::get_singleton()->free(shader_map[current_key].shader);
			shader_map.erase(current_key);
		}

		VS::get_singleton()->material_set_shader(_get_material(), RID());
	}

	if (material_mutex)
		material_mutex->unlock();
}