5 files changed, 34 insertions, 19 deletions

diff --git a/drivers/gles3/shaders/sky.glsl b/drivers/gles3/shaders/sky.glsl
index 21f01d2a8f..4c0fe47f6b 100644
--- a/drivers/gles3/shaders/sky.glsl
+++ b/drivers/gles3/shaders/sky.glsl
@@ -104,6 +104,15 @@ uniform uint directional_light_count;
 
 layout(location = 0) out vec4 frag_color;
 
+#ifdef USE_DEBANDING
+// https://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare
+vec3 interleaved_gradient_noise(vec2 pos) {
+	const vec3 magic = vec3(0.06711056f, 0.00583715f, 52.9829189f);
+	float res = fract(magic.z * fract(dot(pos, magic.xy))) * 2.0 - 1.0;
+	return vec3(res, -res, res) / 255.0;
+}
+#endif
+
 void main() {
 	vec3 cube_normal;
 	cube_normal.z = -1.0;
@@ -168,4 +177,8 @@ void main() {
 
 	frag_color.rgb = color;
 	frag_color.a = alpha;
+
+#ifdef USE_DEBANDING
+	frag_color.rgb += interleaved_gradient_noise(gl_FragCoord.xy);
+#endif
 }
diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp
index 3dbc75392c..523c9dd8e6 100644
--- a/drivers/gles3/storage/material_storage.cpp
+++ b/drivers/gles3/storage/material_storage.cpp
@@ -1715,6 +1715,7 @@ ShaderCompiler::DefaultIdentifierActions actions;
 		actions.usage_defines["HALF_RES_COLOR"] = "\n#define USES_HALF_RES_COLOR\n";
 		actions.usage_defines["QUARTER_RES_COLOR"] = "\n#define USES_QUARTER_RES_COLOR\n";
 		actions.render_mode_defines["disable_fog"] = "#define DISABLE_FOG\n";
+		actions.render_mode_defines["use_debanding"] = "#define USE_DEBANDING\n";
 
 		actions.default_filter = ShaderLanguage::FILTER_LINEAR_MIPMAP;
 		actions.default_repeat = ShaderLanguage::REPEAT_ENABLE;
diff --git a/drivers/gles3/storage/mesh_storage.cpp b/drivers/gles3/storage/mesh_storage.cpp
index e54ecd51c4..22d84eba93 100644
--- a/drivers/gles3/storage/mesh_storage.cpp
+++ b/drivers/gles3/storage/mesh_storage.cpp
@@ -554,6 +554,21 @@ void MeshStorage::mesh_clear(RID p_mesh) {
 			glDeleteBuffers(1, &s.index_buffer);
 			s.index_buffer = 0;
 		}
+
+		if (s.versions) {
+			memfree(s.versions); //reallocs, so free with memfree.
+		}
+
+		if (s.lod_count) {
+			for (uint32_t j = 0; j < s.lod_count; j++) {
+				if (s.lods[j].index_buffer != 0) {
+					glDeleteBuffers(1, &s.lods[j].index_buffer);
+					s.lods[j].index_buffer = 0;
+				}
+			}
+			memdelete_arr(s.lods);
+		}
+
 		memdelete(mesh->surfaces[i]);
 	}
 	if (mesh->surfaces) {
diff --git a/drivers/unix/os_unix.cpp b/drivers/unix/os_unix.cpp
index 384f46c8df..beb2812999 100644
--- a/drivers/unix/os_unix.cpp
+++ b/drivers/unix/os_unix.cpp
@@ -200,7 +200,7 @@ double OS_Unix::get_unix_time() const {
 	return (double)tv_now.tv_sec + double(tv_now.tv_usec) / 1000000;
 }
 
-OS::Date OS_Unix::get_date(bool p_utc) const {
+OS::DateTime OS_Unix::get_datetime(bool p_utc) const {
 	time_t t = time(nullptr);
 	struct tm lt;
 	if (p_utc) {
@@ -208,7 +208,7 @@ OS::Date OS_Unix::get_date(bool p_utc) const {
 	} else {
 		localtime_r(&t, &lt);
 	}
-	Date ret;
+	DateTime ret;
 	ret.year = 1900 + lt.tm_year;
 	// Index starting at 1 to match OS_Unix::get_date
 	//   and Windows SYSTEMTIME and tm_mon follows the typical structure
@@ -216,24 +216,11 @@ OS::Date OS_Unix::get_date(bool p_utc) const {
 	ret.month = (Month)(lt.tm_mon + 1);
 	ret.day = lt.tm_mday;
 	ret.weekday = (Weekday)lt.tm_wday;
-	ret.dst = lt.tm_isdst;
-
-	return ret;
-}
-
-OS::Time OS_Unix::get_time(bool p_utc) const {
-	time_t t = time(nullptr);
-	struct tm lt;
-	if (p_utc) {
-		gmtime_r(&t, &lt);
-	} else {
-		localtime_r(&t, &lt);
-	}
-	Time ret;
 	ret.hour = lt.tm_hour;
 	ret.minute = lt.tm_min;
 	ret.second = lt.tm_sec;
-	get_time_zone_info();
+	ret.dst = lt.tm_isdst;
+
 	return ret;
 }
 
diff --git a/drivers/unix/os_unix.h b/drivers/unix/os_unix.h
index f4609a565b..b4c844bfef 100644
--- a/drivers/unix/os_unix.h
+++ b/drivers/unix/os_unix.h
@@ -63,8 +63,7 @@ public:
 
 	virtual String get_name() const override;
 
-	virtual Date get_date(bool p_utc) const override;
-	virtual Time get_time(bool p_utc) const override;
+	virtual DateTime get_datetime(bool p_utc) const override;
 	virtual TimeZoneInfo get_time_zone_info() const override;
 
 	virtual double get_unix_time() const override;