Improve the appearance of material thumbnails

Author: BlueCube3310

editor/inspector/editor_preview_plugins.cpp

@@ -37,6 +37,7 @@
 #include "editor/file_system/editor_paths.h"
 #include "editor/settings/editor_settings.h"
 #include "editor/themes/editor_scale.h"
+#include "scene/resources/3d/sky_material.h"
 #include "scene/resources/atlas_texture.h"
 #include "scene/resources/bit_map.h"
 #include "scene/resources/font.h"
@@ -362,6 +363,7 @@ EditorMaterialPreviewPlugin::EditorMaterialPreviewPlugin() {
 	RS::get_singleton()->viewport_set_scenario(viewport, scenario);
 	RS::get_singleton()->viewport_set_size(viewport, 128, 128);
 	RS::get_singleton()->viewport_set_transparent_background(viewport, true);
+	RS::get_singleton()->viewport_set_msaa_3d(viewport, RS::VIEWPORT_MSAA_4X);
 	RS::get_singleton()->viewport_set_active(viewport, true);
 	viewport_texture = RS::get_singleton()->viewport_get_texture(viewport);
 
@@ -370,6 +372,15 @@ EditorMaterialPreviewPlugin::EditorMaterialPreviewPlugin() {
 	RS::get_singleton()->camera_set_transform(camera, Transform3D(Basis(), Vector3(0, 0, 3)));
 	RS::get_singleton()->camera_set_perspective(camera, 45, 0.1, 10);
 
+	sky = RS::get_singleton()->sky_create();
+	sky_material.instantiate();
+	RS::get_singleton()->sky_set_material(sky, sky_material->get_rid());
+
+	environment = RS::get_singleton()->environment_create();
+	RS::get_singleton()->environment_set_background(environment, RS::ENV_BG_SKY);
+	RS::get_singleton()->environment_set_sky(environment, sky);
+	RS::get_singleton()->camera_set_environment(camera, environment);
+
 	if (GLOBAL_GET("rendering/lights_and_shadows/use_physical_light_units")) {
 		camera_attributes = RS::get_singleton()->camera_attributes_create();
 		RS::get_singleton()->camera_attributes_set_exposure(camera_attributes, 1.0, 0.000032552); // Matches default CameraAttributesPhysical to work well with default DirectionalLight3Ds.
@@ -391,7 +402,7 @@ EditorMaterialPreviewPlugin::EditorMaterialPreviewPlugin() {
 	sphere = RS::get_singleton()->mesh_create();
 	sphere_instance = RS::get_singleton()->instance_create2(sphere, scenario);
 
-	int lats = 32;
+	int lats = 16;
 	int lons = 32;
 	const double lat_step = Math::PI / lats;
 	const double lon_step = Math::TAU / lons;

editor/inspector/editor_preview_plugins.h

@@ -34,6 +34,7 @@
 #include "editor/inspector/editor_resource_preview.h"
 
 class ScriptLanguage;
+class ProceduralSkyMaterial;
 
 void post_process_preview(Ref<Image> p_image);
 
@@ -87,6 +88,9 @@ class EditorMaterialPreviewPlugin : public EditorResourcePreviewGenerator {
 	RID light_instance2;
 	RID camera;
 	RID camera_attributes;
+	RID environment;
+	RID sky;
+	Ref<ProceduralSkyMaterial> sky_material;
 	mutable DrawRequester draw_requester;
 
 public: