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material.cpp
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material.cpp
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/*************************************************************************/
/* material.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "core/engine.h"
#include "core/project_settings.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_settings.h"
#endif
#include "scene/scene_string_names.h"
void Material::set_next_pass(const Ref<Material> &p_pass) {
for (Ref<Material> pass_child = p_pass; pass_child != nullptr; pass_child = pass_child->get_next_pass()) {
ERR_FAIL_COND_MSG(pass_child == this, "Can't set as next_pass one of its parents to prevent crashes due to recursive loop.");
}
if (next_pass == p_pass) {
return;
}
next_pass = p_pass;
RID next_pass_rid;
if (next_pass.is_valid()) {
next_pass_rid = next_pass->get_rid();
}
VS::get_singleton()->material_set_next_pass(material, next_pass_rid);
}
Ref<Material> Material::get_next_pass() const {
return next_pass;
}
void Material::set_render_priority(int p_priority) {
ERR_FAIL_COND(p_priority < RENDER_PRIORITY_MIN);
ERR_FAIL_COND(p_priority > RENDER_PRIORITY_MAX);
render_priority = p_priority;
VS::get_singleton()->material_set_render_priority(material, p_priority);
}
int Material::get_render_priority() const {
return render_priority;
}
RID Material::get_rid() const {
return material;
}
void Material::_validate_property(PropertyInfo &property) const {
if (!_can_do_next_pass() && property.name == "next_pass") {
property.usage = 0;
}
}
void Material::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_next_pass", "next_pass"), &Material::set_next_pass);
ClassDB::bind_method(D_METHOD("get_next_pass"), &Material::get_next_pass);
ClassDB::bind_method(D_METHOD("set_render_priority", "priority"), &Material::set_render_priority);
ClassDB::bind_method(D_METHOD("get_render_priority"), &Material::get_render_priority);
ADD_PROPERTY(PropertyInfo(Variant::INT, "render_priority", PROPERTY_HINT_RANGE, itos(RENDER_PRIORITY_MIN) + "," + itos(RENDER_PRIORITY_MAX) + ",1"), "set_render_priority", "get_render_priority");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "next_pass", PROPERTY_HINT_RESOURCE_TYPE, "Material"), "set_next_pass", "get_next_pass");
BIND_CONSTANT(RENDER_PRIORITY_MAX);
BIND_CONSTANT(RENDER_PRIORITY_MIN);
}
Material::Material() {
material = VisualServer::get_singleton()->material_create();
render_priority = 0;
}
Material::~Material() {
VisualServer::get_singleton()->free(material);
}
///////////////////////////////////
bool ShaderMaterial::_set(const StringName &p_name, const Variant &p_value) {
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 (n.find("shader_param/") == 0) { //backwards compatibility
pr = n.replace_first("shader_param/", "");
}
}
if (pr) {
VisualServer::get_singleton()->material_set_param(_get_material(), pr, p_value);
return true;
}
}
return false;
}
bool ShaderMaterial::_get(const StringName &p_name, Variant &r_ret) const {
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 (n.find("shader_param/") == 0) { //backwards compatibility
pr = n.replace_first("shader_param/", "");
}
}
if (pr) {
r_ret = VisualServer::get_singleton()->material_get_param(_get_material(), pr);
return true;
}
}
return false;
}
void ShaderMaterial::_get_property_list(List<PropertyInfo> *p_list) const {
if (!shader.is_null()) {
shader->get_param_list(p_list);
}
}
bool ShaderMaterial::property_can_revert(const String &p_name) {
if (shader.is_valid()) {
StringName pr = shader->remap_param(p_name);
if (pr) {
Variant default_value = VisualServer::get_singleton()->material_get_param_default(_get_material(), pr);
Variant current_value;
_get(p_name, current_value);
return default_value.get_type() != Variant::NIL && default_value != current_value;
}
}
return false;
}
Variant ShaderMaterial::property_get_revert(const String &p_name) {
Variant r_ret;
if (shader.is_valid()) {
StringName pr = shader->remap_param(p_name);
if (pr) {
r_ret = VisualServer::get_singleton()->material_get_param_default(_get_material(), pr);
}
}
return r_ret;
}
void ShaderMaterial::set_shader(const Ref<Shader> &p_shader) {
// Only connect/disconnect the signal when running in the editor.
// This can be a slow operation, and `_change_notify()` (which is called by `_shader_changed()`)
// does nothing in non-editor builds anyway. See GH-34741 for details.
if (shader.is_valid() && Engine::get_singleton()->is_editor_hint()) {
shader->disconnect("changed", this, "_shader_changed");
}
shader = p_shader;
RID rid;
if (shader.is_valid()) {
rid = shader->get_rid();
if (Engine::get_singleton()->is_editor_hint()) {
shader->connect("changed", this, "_shader_changed");
}
}
VS::get_singleton()->material_set_shader(_get_material(), rid);
_change_notify(); //properties for shader exposed
emit_changed();
}
Ref<Shader> ShaderMaterial::get_shader() const {
return shader;
}
void ShaderMaterial::set_shader_param(const StringName &p_param, const Variant &p_value) {
VS::get_singleton()->material_set_param(_get_material(), p_param, p_value);
}
Variant ShaderMaterial::get_shader_param(const StringName &p_param) const {
return VS::get_singleton()->material_get_param(_get_material(), p_param);
}
void ShaderMaterial::_shader_changed() {
_change_notify(); //update all properties
}
void ShaderMaterial::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_shader", "shader"), &ShaderMaterial::set_shader);
ClassDB::bind_method(D_METHOD("get_shader"), &ShaderMaterial::get_shader);
ClassDB::bind_method(D_METHOD("set_shader_param", "param", "value"), &ShaderMaterial::set_shader_param);
ClassDB::bind_method(D_METHOD("get_shader_param", "param"), &ShaderMaterial::get_shader_param);
ClassDB::bind_method(D_METHOD("_shader_changed"), &ShaderMaterial::_shader_changed);
ClassDB::bind_method(D_METHOD("property_can_revert", "name"), &ShaderMaterial::property_can_revert);
ClassDB::bind_method(D_METHOD("property_get_revert", "name"), &ShaderMaterial::property_get_revert);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "shader", PROPERTY_HINT_RESOURCE_TYPE, "Shader"), "set_shader", "get_shader");
}
void ShaderMaterial::get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const {
#ifdef TOOLS_ENABLED
const String quote_style = EDITOR_DEF("text_editor/completion/use_single_quotes", 0) ? "'" : "\"";
#else
const String quote_style = "\"";
#endif
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(quote_style + E->get().name.replace_first("shader_param/", "") + quote_style);
}
}
}
Resource::get_argument_options(p_function, p_idx, r_options);
}
bool ShaderMaterial::_can_do_next_pass() const {
return shader.is_valid() && shader->get_mode() == Shader::MODE_SPATIAL;
}
Shader::Mode ShaderMaterial::get_shader_mode() const {
if (shader.is_valid()) {
return shader->get_mode();
} else {
return Shader::MODE_SPATIAL;
}
}
ShaderMaterial::ShaderMaterial() {
}
ShaderMaterial::~ShaderMaterial() {
}
/////////////////////////////////
Mutex SpatialMaterial::material_mutex;
SelfList<SpatialMaterial>::List *SpatialMaterial::dirty_materials = nullptr;
Map<SpatialMaterial::MaterialKey, SpatialMaterial::ShaderData> SpatialMaterial::shader_map;
SpatialMaterial::ShaderNames *SpatialMaterial::shader_names = nullptr;
void SpatialMaterial::init_shaders() {
dirty_materials = memnew(SelfList<SpatialMaterial>::List);
shader_names = memnew(ShaderNames);
shader_names->albedo = "albedo";
shader_names->specular = "specular";
shader_names->roughness = "roughness";
shader_names->metallic = "metallic";
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->depth_scale = "depth_scale";
shader_names->subsurface_scattering_strength = "subsurface_scattering_strength";
shader_names->transmission = "transmission";
shader_names->refraction = "refraction";
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->uv1_blend_sharpness = "uv1_blend_sharpness";
shader_names->uv2_blend_sharpness = "uv2_blend_sharpness";
shader_names->particles_anim_h_frames = "particles_anim_h_frames";
shader_names->particles_anim_v_frames = "particles_anim_v_frames";
shader_names->particles_anim_loop = "particles_anim_loop";
shader_names->depth_min_layers = "depth_min_layers";
shader_names->depth_max_layers = "depth_max_layers";
shader_names->depth_flip = "depth_flip";
shader_names->grow = "grow";
shader_names->ao_light_affect = "ao_light_affect";
shader_names->proximity_fade_distance = "proximity_fade_distance";
shader_names->distance_fade_min = "distance_fade_min";
shader_names->distance_fade_max = "distance_fade_max";
shader_names->metallic_texture_channel = "metallic_texture_channel";
shader_names->roughness_texture_channel = "roughness_texture_channel";
shader_names->ao_texture_channel = "ao_texture_channel";
shader_names->clearcoat_texture_channel = "clearcoat_texture_channel";
shader_names->rim_texture_channel = "rim_texture_channel";
shader_names->depth_texture_channel = "depth_texture_channel";
shader_names->refraction_texture_channel = "refraction_texture_channel";
shader_names->alpha_scissor_threshold = "alpha_scissor_threshold";
shader_names->texture_names[TEXTURE_ALBEDO] = "texture_albedo";
shader_names->texture_names[TEXTURE_METALLIC] = "texture_metallic";
shader_names->texture_names[TEXTURE_ROUGHNESS] = "texture_roughness";
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_DEPTH] = "texture_depth";
shader_names->texture_names[TEXTURE_SUBSURFACE_SCATTERING] = "texture_subsurface_scattering";
shader_names->texture_names[TEXTURE_TRANSMISSION] = "texture_transmission";
shader_names->texture_names[TEXTURE_REFRACTION] = "texture_refraction";
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";
}
Ref<SpatialMaterial> SpatialMaterial::materials_for_2d[SpatialMaterial::MAX_MATERIALS_FOR_2D];
void SpatialMaterial::finish_shaders() {
for (int i = 0; i < MAX_MATERIALS_FOR_2D; i++) {
materials_for_2d[i].unref();
}
memdelete(dirty_materials);
dirty_materials = nullptr;
memdelete(shader_names);
}
void SpatialMaterial::_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 = "shader_type spatial;\nrender_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;
}
DepthDrawMode ddm = depth_draw_mode;
if (features[FEATURE_REFRACTION]) {
ddm = DEPTH_DRAW_ALWAYS;
}
switch (ddm) {
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;
}
switch (diffuse_mode) {
case DIFFUSE_BURLEY:
code += ",diffuse_burley";
break;
case DIFFUSE_LAMBERT:
code += ",diffuse_lambert";
break;
case DIFFUSE_LAMBERT_WRAP:
code += ",diffuse_lambert_wrap";
break;
case DIFFUSE_OREN_NAYAR:
code += ",diffuse_oren_nayar";
break;
case DIFFUSE_TOON:
code += ",diffuse_toon";
break;
}
switch (specular_mode) {
case SPECULAR_SCHLICK_GGX:
code += ",specular_schlick_ggx";
break;
case SPECULAR_BLINN:
code += ",specular_blinn";
break;
case SPECULAR_PHONG:
code += ",specular_phong";
break;
case SPECULAR_TOON:
code += ",specular_toon";
break;
case SPECULAR_DISABLED:
code += ",specular_disabled";
break;
}
if (flags[FLAG_UNSHADED]) {
code += ",unshaded";
}
if (flags[FLAG_DISABLE_DEPTH_TEST]) {
code += ",depth_test_disable";
}
if (flags[FLAG_USE_VERTEX_LIGHTING] || force_vertex_shading) {
code += ",vertex_lighting";
}
if (flags[FLAG_TRIPLANAR_USE_WORLD] && (flags[FLAG_UV1_USE_TRIPLANAR] || flags[FLAG_UV2_USE_TRIPLANAR])) {
code += ",world_vertex_coords";
}
if (flags[FLAG_DONT_RECEIVE_SHADOWS]) {
code += ",shadows_disabled";
}
if (flags[FLAG_DISABLE_AMBIENT_LIGHT]) {
code += ",ambient_light_disabled";
}
if (flags[FLAG_ENSURE_CORRECT_NORMALS]) {
code += ",ensure_correct_normals";
}
if (flags[FLAG_USE_SHADOW_TO_OPACITY]) {
code += ",shadow_to_opacity";
}
code += ";\n";
code += "uniform vec4 albedo : hint_color;\n";
code += "uniform sampler2D texture_albedo : hint_albedo;\n";
code += "uniform float specular;\n";
code += "uniform float metallic;\n";
if (grow_enabled) {
code += "uniform float grow;\n";
}
if (proximity_fade_enabled) {
code += "uniform float proximity_fade_distance;\n";
}
if (distance_fade != DISTANCE_FADE_DISABLED) {
code += "uniform float distance_fade_min;\n";
code += "uniform float distance_fade_max;\n";
}
if (flags[FLAG_USE_ALPHA_SCISSOR]) {
code += "uniform float alpha_scissor_threshold;\n";
}
code += "uniform float roughness : hint_range(0,1);\n";
code += "uniform float point_size : hint_range(0,128);\n";
if (textures[TEXTURE_METALLIC] != nullptr) {
code += "uniform sampler2D texture_metallic : hint_white;\n";
code += "uniform vec4 metallic_texture_channel;\n";
}
if (textures[TEXTURE_ROUGHNESS] != nullptr) {
code += "uniform sampler2D texture_roughness : hint_white;\n";
code += "uniform vec4 roughness_texture_channel;\n";
}
if (billboard_mode == BILLBOARD_PARTICLES) {
code += "uniform int particles_anim_h_frames;\n";
code += "uniform int particles_anim_v_frames;\n";
code += "uniform bool particles_anim_loop;\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_REFRACTION]) {
code += "uniform sampler2D texture_refraction;\n";
code += "uniform float refraction : hint_range(-16,16);\n";
code += "uniform vec4 refraction_texture_channel;\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";
code += "uniform vec4 ao_texture_channel;\n";
code += "uniform float ao_light_affect;\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";
}
if (features[FEATURE_TRANSMISSION]) {
code += "uniform vec4 transmission : hint_color;\n";
code += "uniform sampler2D texture_transmission : hint_black;\n";
}
if (features[FEATURE_DEPTH_MAPPING]) {
code += "uniform sampler2D texture_depth : hint_black;\n";
code += "uniform float depth_scale;\n";
code += "uniform int depth_min_layers;\n";
code += "uniform int depth_max_layers;\n";
code += "uniform vec2 depth_flip;\n";
}
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "varying vec3 uv1_triplanar_pos;\n";
}
if (flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "varying vec3 uv2_triplanar_pos;\n";
}
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "uniform float uv1_blend_sharpness;\n";
code += "varying vec3 uv1_power_normal;\n";
}
if (flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "uniform float uv2_blend_sharpness;\n";
code += "varying vec3 uv2_power_normal;\n";
}
code += "uniform vec3 uv1_scale;\n";
code += "uniform vec3 uv1_offset;\n";
code += "uniform vec3 uv2_scale;\n";
code += "uniform vec3 uv2_offset;\n";
code += "\n\n";
code += "void vertex() {\n";
if (flags[FLAG_SRGB_VERTEX_COLOR]) {
code += "\tif (!OUTPUT_IS_SRGB) {\n";
code += "\t\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";
code += "\t}\n";
}
if (flags[FLAG_USE_POINT_SIZE]) {
code += "\tPOINT_SIZE=point_size;\n";
}
if (flags[FLAG_USE_VERTEX_LIGHTING] || force_vertex_shading) {
code += "\tROUGHNESS=roughness;\n";
}
if (!flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tUV=UV*uv1_scale.xy+uv1_offset.xy;\n";
}
switch (billboard_mode) {
case BILLBOARD_DISABLED: {
} break;
case BILLBOARD_ENABLED: {
code += "\tMODELVIEW_MATRIX = INV_CAMERA_MATRIX * mat4(CAMERA_MATRIX[0],CAMERA_MATRIX[1],CAMERA_MATRIX[2],WORLD_MATRIX[3]);\n";
if (flags[FLAG_BILLBOARD_KEEP_SCALE]) {
code += "\tMODELVIEW_MATRIX = MODELVIEW_MATRIX * mat4(vec4(length(WORLD_MATRIX[0].xyz), 0.0, 0.0, 0.0),vec4(0.0, length(WORLD_MATRIX[1].xyz), 0.0, 0.0),vec4(0.0, 0.0, length(WORLD_MATRIX[2].xyz), 0.0),vec4(0.0, 0.0, 0.0, 1.0));\n";
}
} break;
case BILLBOARD_FIXED_Y: {
code += "\tMODELVIEW_MATRIX = INV_CAMERA_MATRIX * mat4(CAMERA_MATRIX[0],WORLD_MATRIX[1],vec4(normalize(cross(CAMERA_MATRIX[0].xyz,WORLD_MATRIX[1].xyz)), 0.0),WORLD_MATRIX[3]);\n";
if (flags[FLAG_BILLBOARD_KEEP_SCALE]) {
code += "\tMODELVIEW_MATRIX = MODELVIEW_MATRIX * mat4(vec4(length(WORLD_MATRIX[0].xyz), 0.0, 0.0, 0.0),vec4(0.0, 1.0, 0.0, 0.0),vec4(0.0, 0.0, length(WORLD_MATRIX[2].xyz), 0.0), vec4(0.0, 0.0, 0.0, 1.0));\n";
} else {
code += "\tMODELVIEW_MATRIX = MODELVIEW_MATRIX * mat4(vec4(1.0, 0.0, 0.0, 0.0),vec4(0.0, 1.0/length(WORLD_MATRIX[1].xyz), 0.0, 0.0), vec4(0.0, 0.0, 1.0, 0.0),vec4(0.0, 0.0, 0.0 ,1.0));\n";
}
} break;
case BILLBOARD_PARTICLES: {
//make billboard
code += "\tmat4 mat_world = mat4(normalize(CAMERA_MATRIX[0])*length(WORLD_MATRIX[0]),normalize(CAMERA_MATRIX[1])*length(WORLD_MATRIX[0]),normalize(CAMERA_MATRIX[2])*length(WORLD_MATRIX[2]),WORLD_MATRIX[3]);\n";
//rotate by rotation
code += "\tmat_world = mat_world * mat4( vec4(cos(INSTANCE_CUSTOM.x),-sin(INSTANCE_CUSTOM.x), 0.0, 0.0), vec4(sin(INSTANCE_CUSTOM.x), cos(INSTANCE_CUSTOM.x), 0.0, 0.0),vec4(0.0, 0.0, 1.0, 0.0),vec4(0.0, 0.0, 0.0, 1.0));\n";
//set modelview
code += "\tMODELVIEW_MATRIX = INV_CAMERA_MATRIX * mat_world;\n";
//handle animation
code += "\tfloat h_frames = float(particles_anim_h_frames);\n";
code += "\tfloat v_frames = float(particles_anim_v_frames);\n";
code += "\tfloat particle_total_frames = float(particles_anim_h_frames * particles_anim_v_frames);\n";
code += "\tfloat particle_frame = floor(INSTANCE_CUSTOM.z * float(particle_total_frames));\n";
code += "\tif (!particles_anim_loop) {\n";
code += "\t\tparticle_frame = clamp(particle_frame, 0.0, particle_total_frames - 1.0);\n";
code += "\t} else {\n";
code += "\t\tparticle_frame = mod(particle_frame, particle_total_frames);\n";
code += "\t}";
code += "\tUV /= vec2(h_frames, v_frames);\n";
code += "\tUV += vec2(mod(particle_frame, h_frames) / h_frames, floor(particle_frame / h_frames) / v_frames);\n";
} break;
}
if (flags[FLAG_FIXED_SIZE]) {
code += "\tif (PROJECTION_MATRIX[3][3] != 0.0) {\n";
//orthogonal matrix, try to do about the same
//with viewport size
code += "\t\tfloat h = abs(1.0 / (2.0 * PROJECTION_MATRIX[1][1]));\n";
code += "\t\tfloat sc = (h * 2.0); //consistent with Y-fov\n";
code += "\t\tMODELVIEW_MATRIX[0]*=sc;\n";
code += "\t\tMODELVIEW_MATRIX[1]*=sc;\n";
code += "\t\tMODELVIEW_MATRIX[2]*=sc;\n";
code += "\t} else {\n";
//just scale by depth
code += "\t\tfloat sc = -(MODELVIEW_MATRIX)[3].z;\n";
code += "\t\tMODELVIEW_MATRIX[0]*=sc;\n";
code += "\t\tMODELVIEW_MATRIX[1]*=sc;\n";
code += "\t\tMODELVIEW_MATRIX[2]*=sc;\n";
code += "\t}\n";
}
if (detail_uv == DETAIL_UV_2 && !flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "\tUV2=UV2*uv2_scale.xy+uv2_offset.xy;\n";
}
if (flags[FLAG_UV1_USE_TRIPLANAR] || flags[FLAG_UV2_USE_TRIPLANAR]) {
//generate tangent and binormal in world space
code += "\tTANGENT = vec3(0.0,0.0,-1.0) * abs(NORMAL.x);\n";
code += "\tTANGENT+= vec3(1.0,0.0,0.0) * abs(NORMAL.y);\n";
code += "\tTANGENT+= vec3(1.0,0.0,0.0) * abs(NORMAL.z);\n";
code += "\tTANGENT = normalize(TANGENT);\n";
code += "\tBINORMAL = vec3(0.0,1.0,0.0) * abs(NORMAL.x);\n";
code += "\tBINORMAL+= vec3(0.0,0.0,-1.0) * abs(NORMAL.y);\n";
code += "\tBINORMAL+= vec3(0.0,1.0,0.0) * abs(NORMAL.z);\n";
code += "\tBINORMAL = normalize(BINORMAL);\n";
}
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tuv1_power_normal=pow(abs(NORMAL),vec3(uv1_blend_sharpness));\n";
code += "\tuv1_power_normal/=dot(uv1_power_normal,vec3(1.0));\n";
code += "\tuv1_triplanar_pos = VERTEX * uv1_scale + uv1_offset;\n";
code += "\tuv1_triplanar_pos *= vec3(1.0,-1.0, 1.0);\n";
}
if (flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "\tuv2_power_normal=pow(abs(NORMAL), vec3(uv2_blend_sharpness));\n";
code += "\tuv2_power_normal/=dot(uv2_power_normal,vec3(1.0));\n";
code += "\tuv2_triplanar_pos = VERTEX * uv2_scale + uv2_offset;\n";
code += "\tuv2_triplanar_pos *= vec3(1.0,-1.0, 1.0);\n";
}
if (grow_enabled) {
code += "\tVERTEX+=NORMAL*grow;\n";
}
code += "}\n";
code += "\n\n";
if (flags[FLAG_UV1_USE_TRIPLANAR] || flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "vec4 triplanar_texture(sampler2D p_sampler,vec3 p_weights,vec3 p_triplanar_pos) {\n";
code += "\tvec4 samp=vec4(0.0);\n";
code += "\tsamp+= texture(p_sampler,p_triplanar_pos.xy) * p_weights.z;\n";
code += "\tsamp+= texture(p_sampler,p_triplanar_pos.xz) * p_weights.y;\n";
code += "\tsamp+= texture(p_sampler,p_triplanar_pos.zy * vec2(-1.0,1.0)) * p_weights.x;\n";
code += "\treturn samp;\n";
code += "}\n";
}
code += "\n\n";
code += "void fragment() {\n";
if (!flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec2 base_uv = UV;\n";
}
if ((features[FEATURE_DETAIL] && detail_uv == DETAIL_UV_2) || (features[FEATURE_AMBIENT_OCCLUSION] && flags[FLAG_AO_ON_UV2]) || (features[FEATURE_EMISSION] && flags[FLAG_EMISSION_ON_UV2])) {
code += "\tvec2 base_uv2 = UV2;\n";
}
if (!VisualServer::get_singleton()->is_low_end() && features[FEATURE_DEPTH_MAPPING] && !flags[FLAG_UV1_USE_TRIPLANAR]) { //depthmap not supported with triplanar
code += "\t{\n";
code += "\t\tvec3 view_dir = normalize(normalize(-VERTEX)*mat3(TANGENT*depth_flip.x,-BINORMAL*depth_flip.y,NORMAL));\n"; // binormal is negative due to mikktspace, flip 'unflips' it ;-)
if (deep_parallax) {
code += "\t\tfloat num_layers = mix(float(depth_max_layers),float(depth_min_layers), abs(dot(vec3(0.0, 0.0, 1.0), view_dir)));\n";
code += "\t\tfloat layer_depth = 1.0 / num_layers;\n";
code += "\t\tfloat current_layer_depth = 0.0;\n";
code += "\t\tvec2 P = view_dir.xy * depth_scale;\n";
code += "\t\tvec2 delta = P / num_layers;\n";
code += "\t\tvec2 ofs = base_uv;\n";
code += "\t\tfloat depth = textureLod(texture_depth, ofs, 0.0).r;\n";
code += "\t\tfloat current_depth = 0.0;\n";
code += "\t\twhile(current_depth < depth) {\n";
code += "\t\t\tofs -= delta;\n";
code += "\t\t\tdepth = textureLod(texture_depth, ofs, 0.0).r;\n";
code += "\t\t\tcurrent_depth += layer_depth;\n";
code += "\t\t}\n";
code += "\t\tvec2 prev_ofs = ofs + delta;\n";
code += "\t\tfloat after_depth = depth - current_depth;\n";
code += "\t\tfloat before_depth = textureLod(texture_depth, prev_ofs, 0.0).r - current_depth + layer_depth;\n";
code += "\t\tfloat weight = after_depth / (after_depth - before_depth);\n";
code += "\t\tofs = mix(ofs,prev_ofs,weight);\n";
} else {
code += "\t\tfloat depth = texture(texture_depth, base_uv).r;\n";
code += "\t\tvec2 ofs = base_uv - view_dir.xy / view_dir.z * (depth * depth_scale);\n";
}
code += "\t\tbase_uv=ofs;\n";
if (features[FEATURE_DETAIL] && detail_uv == DETAIL_UV_2) {
code += "\t\tbase_uv2-=ofs;\n";
}
code += "\t}\n";
}
if (flags[FLAG_USE_POINT_SIZE]) {
code += "\tvec4 albedo_tex = texture(texture_albedo,POINT_COORD);\n";
} else {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec4 albedo_tex = triplanar_texture(texture_albedo,uv1_power_normal,uv1_triplanar_pos);\n";
} else {
code += "\tvec4 albedo_tex = texture(texture_albedo,base_uv);\n";
}
}
if (flags[FLAG_ALBEDO_TEXTURE_FORCE_SRGB]) {
code += "\talbedo_tex.rgb = mix(pow((albedo_tex.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)),vec3(2.4)),albedo_tex.rgb.rgb * (1.0 / 12.92),lessThan(albedo_tex.rgb,vec3(0.04045)));\n";
}
if (flags[FLAG_ALBEDO_FROM_VERTEX_COLOR]) {
code += "\talbedo_tex *= COLOR;\n";
}
code += "\tALBEDO = albedo.rgb * albedo_tex.rgb;\n";
if (textures[TEXTURE_METALLIC] != nullptr) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tfloat metallic_tex = dot(triplanar_texture(texture_metallic,uv1_power_normal,uv1_triplanar_pos),metallic_texture_channel);\n";
} else {
code += "\tfloat metallic_tex = dot(texture(texture_metallic,base_uv),metallic_texture_channel);\n";
}
code += "\tMETALLIC = metallic_tex * metallic;\n";
} else {
code += "\tMETALLIC = metallic;\n";
}
if (textures[TEXTURE_ROUGHNESS] != nullptr) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tfloat roughness_tex = dot(triplanar_texture(texture_roughness,uv1_power_normal,uv1_triplanar_pos),roughness_texture_channel);\n";
} else {
code += "\tfloat roughness_tex = dot(texture(texture_roughness,base_uv),roughness_texture_channel);\n";
}
code += "\tROUGHNESS = roughness_tex * roughness;\n";
} else {
code += "\tROUGHNESS = roughness;\n";
}
code += "\tSPECULAR = specular;\n";
if (features[FEATURE_NORMAL_MAPPING]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tNORMALMAP = triplanar_texture(texture_normal,uv1_power_normal,uv1_triplanar_pos).rgb;\n";
} else {
code += "\tNORMALMAP = texture(texture_normal,base_uv).rgb;\n";
}
code += "\tNORMALMAP_DEPTH = normal_scale;\n";
}
if (features[FEATURE_EMISSION]) {
if (flags[FLAG_EMISSION_ON_UV2]) {
if (flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "\tvec3 emission_tex = triplanar_texture(texture_emission,uv2_power_normal,uv2_triplanar_pos).rgb;\n";
} else {
code += "\tvec3 emission_tex = texture(texture_emission,base_uv2).rgb;\n";
}
} else {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec3 emission_tex = triplanar_texture(texture_emission,uv1_power_normal,uv1_triplanar_pos).rgb;\n";
} else {
code += "\tvec3 emission_tex = texture(texture_emission,base_uv).rgb;\n";
}
}
if (emission_op == EMISSION_OP_ADD) {
code += "\tEMISSION = (emission.rgb+emission_tex)*emission_energy;\n";
} else {
code += "\tEMISSION = (emission.rgb*emission_tex)*emission_energy;\n";
}
}
if (features[FEATURE_REFRACTION]) {
if (features[FEATURE_NORMAL_MAPPING]) {
code += "\tvec3 unpacked_normal = NORMALMAP;\n";
code += "\tunpacked_normal.xy = unpacked_normal.xy * 2.0 - 1.0;\n";
code += "\tunpacked_normal.z = sqrt(max(0.0, 1.0 - dot(unpacked_normal.xy, unpacked_normal.xy)));\n";
code += "\tvec3 ref_normal = normalize( mix(NORMAL,TANGENT * unpacked_normal.x + BINORMAL * unpacked_normal.y + NORMAL * unpacked_normal.z,NORMALMAP_DEPTH) );\n";
} else {
code += "\tvec3 ref_normal = NORMAL;\n";
}
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec2 ref_ofs = SCREEN_UV - ref_normal.xy * dot(triplanar_texture(texture_refraction,uv1_power_normal,uv1_triplanar_pos),refraction_texture_channel) * refraction;\n";
} else {
code += "\tvec2 ref_ofs = SCREEN_UV - ref_normal.xy * dot(texture(texture_refraction,base_uv),refraction_texture_channel) * refraction;\n";
}
code += "\tfloat ref_amount = 1.0 - albedo.a * albedo_tex.a;\n";
code += "\tEMISSION += textureLod(SCREEN_TEXTURE,ref_ofs,ROUGHNESS * 8.0).rgb * ref_amount;\n";
code += "\tALBEDO *= 1.0 - ref_amount;\n";
code += "\tALPHA = 1.0;\n";
} else if (features[FEATURE_TRANSPARENT] || flags[FLAG_USE_ALPHA_SCISSOR] || flags[FLAG_USE_SHADOW_TO_OPACITY] || (distance_fade == DISTANCE_FADE_PIXEL_ALPHA) || proximity_fade_enabled) {
code += "\tALPHA = albedo.a * albedo_tex.a;\n";
}
if (proximity_fade_enabled) {
code += "\tfloat depth_tex = textureLod(DEPTH_TEXTURE,SCREEN_UV,0.0).r;\n";
code += "\tvec4 world_pos = INV_PROJECTION_MATRIX * vec4(SCREEN_UV*2.0-1.0,depth_tex*2.0-1.0,1.0);\n";
code += "\tworld_pos.xyz/=world_pos.w;\n";
code += "\tALPHA*=clamp(1.0-smoothstep(world_pos.z+proximity_fade_distance,world_pos.z,VERTEX.z),0.0,1.0);\n";
}
if (distance_fade != DISTANCE_FADE_DISABLED) {
if ((distance_fade == DISTANCE_FADE_OBJECT_DITHER || distance_fade == DISTANCE_FADE_PIXEL_DITHER)) {
if (!VisualServer::get_singleton()->is_low_end()) {
code += "\t{\n";
if (distance_fade == DISTANCE_FADE_OBJECT_DITHER) {
code += "\t\tfloat fade_distance = abs((INV_CAMERA_MATRIX * WORLD_MATRIX[3]).z);\n";
} else {
code += "\t\tfloat fade_distance=-VERTEX.z;\n";
}
code += "\t\tfloat fade=clamp(smoothstep(distance_fade_min,distance_fade_max,fade_distance),0.0,1.0);\n";
code += "\t\tint x = int(FRAGCOORD.x) % 4;\n";
code += "\t\tint y = int(FRAGCOORD.y) % 4;\n";
code += "\t\tint index = x + y * 4;\n";
code += "\t\tfloat limit = 0.0;\n\n";
code += "\t\tif (x < 8) {\n";
code += "\t\t\tif (index == 0) limit = 0.0625;\n";
code += "\t\t\tif (index == 1) limit = 0.5625;\n";
code += "\t\t\tif (index == 2) limit = 0.1875;\n";
code += "\t\t\tif (index == 3) limit = 0.6875;\n";
code += "\t\t\tif (index == 4) limit = 0.8125;\n";
code += "\t\t\tif (index == 5) limit = 0.3125;\n";
code += "\t\t\tif (index == 6) limit = 0.9375;\n";
code += "\t\t\tif (index == 7) limit = 0.4375;\n";
code += "\t\t\tif (index == 8) limit = 0.25;\n";
code += "\t\t\tif (index == 9) limit = 0.75;\n";
code += "\t\t\tif (index == 10) limit = 0.125;\n";
code += "\t\t\tif (index == 11) limit = 0.625;\n";
code += "\t\t\tif (index == 12) limit = 1.0;\n";
code += "\t\t\tif (index == 13) limit = 0.5;\n";
code += "\t\t\tif (index == 14) limit = 0.875;\n";
code += "\t\t\tif (index == 15) limit = 0.375;\n";
code += "\t\t}\n\n";
code += "\tif (fade < limit)\n";
code += "\t\tdiscard;\n";
code += "\t}\n\n";
}
} else {
code += "\tALPHA*=clamp(smoothstep(distance_fade_min,distance_fade_max,-VERTEX.z),0.0,1.0);\n";
}
}
if (features[FEATURE_RIM]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec2 rim_tex = triplanar_texture(texture_rim,uv1_power_normal,uv1_triplanar_pos).xy;\n";
} else {
code += "\tvec2 rim_tex = texture(texture_rim,base_uv).xy;\n";
}
code += "\tRIM = rim*rim_tex.x;";
code += "\tRIM_TINT = rim_tint*rim_tex.y;\n";
}
if (features[FEATURE_CLEARCOAT]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec2 clearcoat_tex = triplanar_texture(texture_clearcoat,uv1_power_normal,uv1_triplanar_pos).xy;\n";
} else {
code += "\tvec2 clearcoat_tex = texture(texture_clearcoat,base_uv).xy;\n";
}
code += "\tCLEARCOAT = clearcoat*clearcoat_tex.x;";
code += "\tCLEARCOAT_GLOSS = clearcoat_gloss*clearcoat_tex.y;\n";
}
if (features[FEATURE_ANISOTROPY]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec3 anisotropy_tex = triplanar_texture(texture_flowmap,uv1_power_normal,uv1_triplanar_pos).rga;\n";
} else {
code += "\tvec3 anisotropy_tex = texture(texture_flowmap,base_uv).rga;\n";
}
code += "\tANISOTROPY = anisotropy_ratio*anisotropy_tex.b;\n";
code += "\tANISOTROPY_FLOW = anisotropy_tex.rg*2.0-1.0;\n";
}
if (features[FEATURE_AMBIENT_OCCLUSION]) {
if (flags[FLAG_AO_ON_UV2]) {
if (flags[FLAG_UV2_USE_TRIPLANAR]) {
code += "\tAO = dot(triplanar_texture(texture_ambient_occlusion,uv2_power_normal,uv2_triplanar_pos),ao_texture_channel);\n";
} else {
code += "\tAO = dot(texture(texture_ambient_occlusion,base_uv2),ao_texture_channel);\n";
}
} else {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tAO = dot(triplanar_texture(texture_ambient_occlusion,uv1_power_normal,uv1_triplanar_pos),ao_texture_channel);\n";
} else {
code += "\tAO = dot(texture(texture_ambient_occlusion,base_uv),ao_texture_channel);\n";
}
}
code += "\tAO_LIGHT_AFFECT = ao_light_affect;\n";
}
if (features[FEATURE_SUBSURACE_SCATTERING]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tfloat sss_tex = triplanar_texture(texture_subsurface_scattering,uv1_power_normal,uv1_triplanar_pos).r;\n";
} else {
code += "\tfloat sss_tex = texture(texture_subsurface_scattering,base_uv).r;\n";
}
code += "\tSSS_STRENGTH=subsurface_scattering_strength*sss_tex;\n";
}
if (features[FEATURE_TRANSMISSION]) {
if (flags[FLAG_UV1_USE_TRIPLANAR]) {
code += "\tvec3 transmission_tex = triplanar_texture(texture_transmission,uv1_power_normal,uv1_triplanar_pos).rgb;\n";
} else {
code += "\tvec3 transmission_tex = texture(texture_transmission,base_uv).rgb;\n";
}
code += "\tTRANSMISSION = (transmission.rgb+transmission_tex);\n";
}