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- /**************************************************************************/
- /* texture_3d_editor_plugin.cpp */
- /**************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /**************************************************************************/
- /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
- /* 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 "texture_3d_editor_plugin.h"
- #include "editor/editor_string_names.h"
- #include "editor/plugins/color_channel_selector.h"
- #include "editor/themes/editor_scale.h"
- #include "scene/gui/label.h"
- // Shader sources.
- constexpr const char *texture_3d_shader = R"(
- // Texture3DEditor preview shader.
- shader_type canvas_item;
- uniform sampler3D tex;
- uniform float layer;
- uniform vec4 u_channel_factors = vec4(1.0);
- vec4 filter_preview_colors(vec4 input_color, vec4 factors) {
- // Filter RGB.
- vec4 output_color = input_color * vec4(factors.rgb, input_color.a);
- // Remove transparency when alpha is not enabled.
- output_color.a = mix(1.0, output_color.a, factors.a);
- // Switch to opaque grayscale when visualizing only one channel.
- float csum = factors.r + factors.g + factors.b + factors.a;
- float single = clamp(2.0 - csum, 0.0, 1.0);
- for (int i = 0; i < 4; i++) {
- float c = input_color[i];
- output_color = mix(output_color, vec4(c, c, c, 1.0), factors[i] * single);
- }
- return output_color;
- }
- void fragment() {
- COLOR = textureLod(tex, vec3(UV, layer), 0.0);
- COLOR = filter_preview_colors(COLOR, u_channel_factors);
- }
- )";
- void Texture3DEditor::_texture_rect_draw() {
- texture_rect->draw_rect(Rect2(Point2(), texture_rect->get_size()), Color(1, 1, 1, 1));
- }
- void Texture3DEditor::_notification(int p_what) {
- switch (p_what) {
- case NOTIFICATION_RESIZED: {
- _texture_rect_update_area();
- } break;
- case NOTIFICATION_DRAW: {
- Ref<Texture2D> checkerboard = get_editor_theme_icon(SNAME("Checkerboard"));
- Size2 size = get_size();
- draw_texture_rect(checkerboard, Rect2(Point2(), size), true);
- } break;
- case NOTIFICATION_THEME_CHANGED: {
- if (info) {
- Ref<Font> metadata_label_font = get_theme_font(SNAME("expression"), EditorStringName(EditorFonts));
- info->add_theme_font_override(SceneStringName(font), metadata_label_font);
- }
- } break;
- }
- }
- void Texture3DEditor::_texture_changed() {
- if (!is_visible()) {
- return;
- }
- setting = true;
- _update_gui();
- setting = false;
- _update_material(true);
- queue_redraw();
- }
- void Texture3DEditor::_update_material(bool p_texture_changed) {
- material->set_shader_parameter("layer", (layer->get_value() + 0.5) / texture->get_depth());
- if (p_texture_changed) {
- material->set_shader_parameter("tex", texture->get_rid());
- }
- material->set_shader_parameter("u_channel_factors", channel_selector->get_selected_channel_factors());
- }
- void Texture3DEditor::_make_shaders() {
- shader.instantiate();
- shader->set_code(texture_3d_shader);
- material.instantiate();
- material->set_shader(shader);
- }
- void Texture3DEditor::_texture_rect_update_area() {
- Size2 size = get_size();
- int tex_width = texture->get_width() * size.height / texture->get_height();
- int tex_height = size.height;
- if (tex_width > size.width) {
- tex_width = size.width;
- tex_height = texture->get_height() * tex_width / texture->get_width();
- }
- // Prevent the texture from being unpreviewable after the rescale, so that we can still see something
- if (tex_height <= 0) {
- tex_height = 1;
- }
- if (tex_width <= 0) {
- tex_width = 1;
- }
- int ofs_x = (size.width - tex_width) / 2;
- int ofs_y = (size.height - tex_height) / 2;
- texture_rect->set_position(Vector2(ofs_x, ofs_y));
- texture_rect->set_size(Vector2(tex_width, tex_height));
- }
- void Texture3DEditor::_update_gui() {
- if (texture.is_null()) {
- return;
- }
- _texture_rect_update_area();
- layer->set_max(texture->get_depth() - 1);
- const Image::Format format = texture->get_format();
- const String format_name = Image::get_format_name(format);
- if (texture->has_mipmaps()) {
- const int mip_count = Image::get_image_required_mipmaps(texture->get_width(), texture->get_height(), format);
- const int memory = Image::get_image_data_size(texture->get_width(), texture->get_height(), format, true) * texture->get_depth();
- info->set_text(vformat(String::utf8("%d×%d×%d %s\n") + TTR("%s Mipmaps") + "\n" + TTR("Memory: %s"),
- texture->get_width(),
- texture->get_height(),
- texture->get_depth(),
- format_name,
- mip_count,
- String::humanize_size(memory)));
- } else {
- const int memory = Image::get_image_data_size(texture->get_width(), texture->get_height(), format, false) * texture->get_depth();
- info->set_text(vformat(String::utf8("%d×%d×%d %s\n") + TTR("No Mipmaps") + "\n" + TTR("Memory: %s"),
- texture->get_width(),
- texture->get_height(),
- texture->get_depth(),
- format_name,
- String::humanize_size(memory)));
- }
- const uint32_t components_mask = Image::get_format_component_mask(format);
- if (is_power_of_2(components_mask)) {
- // Only one channel available, no point in showing a channel selector.
- channel_selector->hide();
- } else {
- channel_selector->show();
- channel_selector->set_available_channels_mask(components_mask);
- }
- }
- void Texture3DEditor::on_selected_channels_changed() {
- _update_material(false);
- }
- void Texture3DEditor::edit(Ref<Texture3D> p_texture) {
- if (texture.is_valid()) {
- texture->disconnect_changed(callable_mp(this, &Texture3DEditor::_texture_changed));
- }
- texture = p_texture;
- if (texture.is_valid()) {
- if (shader.is_null()) {
- _make_shaders();
- }
- texture->connect_changed(callable_mp(this, &Texture3DEditor::_texture_changed));
- texture_rect->set_material(material);
- setting = true;
- layer->set_value(0);
- layer->show();
- _update_gui();
- setting = false;
- _update_material(true);
- queue_redraw();
- } else {
- hide();
- }
- }
- Texture3DEditor::Texture3DEditor() {
- set_texture_repeat(TextureRepeat::TEXTURE_REPEAT_ENABLED);
- set_custom_minimum_size(Size2(1, 256.0) * EDSCALE);
- texture_rect = memnew(Control);
- texture_rect->set_mouse_filter(MOUSE_FILTER_IGNORE);
- texture_rect->connect(SceneStringName(draw), callable_mp(this, &Texture3DEditor::_texture_rect_draw));
- add_child(texture_rect);
- layer = memnew(SpinBox);
- layer->set_step(1);
- layer->set_max(100);
- layer->set_modulate(Color(1, 1, 1, 0.8));
- layer->set_h_grow_direction(GROW_DIRECTION_BEGIN);
- layer->set_anchor(SIDE_RIGHT, 1);
- layer->set_anchor(SIDE_LEFT, 1);
- layer->connect(SceneStringName(value_changed), callable_mp(this, &Texture3DEditor::_layer_changed));
- add_child(layer);
- channel_selector = memnew(ColorChannelSelector);
- channel_selector->connect("selected_channels_changed", callable_mp(this, &Texture3DEditor::on_selected_channels_changed));
- channel_selector->set_anchors_preset(Control::PRESET_TOP_LEFT);
- add_child(channel_selector);
- info = memnew(Label);
- info->add_theme_color_override(SceneStringName(font_color), Color(1, 1, 1));
- info->add_theme_color_override("font_shadow_color", Color(0, 0, 0));
- info->add_theme_font_size_override(SceneStringName(font_size), 14 * EDSCALE);
- info->add_theme_color_override("font_outline_color", Color(0, 0, 0));
- info->add_theme_constant_override("outline_size", 8 * EDSCALE);
- info->set_h_grow_direction(GROW_DIRECTION_BEGIN);
- info->set_v_grow_direction(GROW_DIRECTION_BEGIN);
- info->set_h_size_flags(Control::SIZE_SHRINK_END);
- info->set_v_size_flags(Control::SIZE_SHRINK_END);
- info->set_anchor(SIDE_RIGHT, 1);
- info->set_anchor(SIDE_LEFT, 1);
- info->set_anchor(SIDE_BOTTOM, 1);
- info->set_anchor(SIDE_TOP, 1);
- add_child(info);
- }
- Texture3DEditor::~Texture3DEditor() {
- if (texture.is_valid()) {
- texture->disconnect_changed(callable_mp(this, &Texture3DEditor::_texture_changed));
- }
- }
- bool EditorInspectorPlugin3DTexture::can_handle(Object *p_object) {
- return Object::cast_to<Texture3D>(p_object) != nullptr;
- }
- void EditorInspectorPlugin3DTexture::parse_begin(Object *p_object) {
- Texture3D *texture = Object::cast_to<Texture3D>(p_object);
- if (!texture) {
- return;
- }
- Ref<Texture3D> m(texture);
- Texture3DEditor *editor = memnew(Texture3DEditor);
- editor->edit(m);
- add_custom_control(editor);
- }
- Texture3DEditorPlugin::Texture3DEditorPlugin() {
- Ref<EditorInspectorPlugin3DTexture> plugin;
- plugin.instantiate();
- add_inspector_plugin(plugin);
- }
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