diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index f9af86e19b5..09edc121123 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -4075,7 +4075,7 @@ RasterizerSceneGLES3::RasterizerSceneGLES3() {
 		scene_globals.default_shader = material_storage->shader_allocate();
 		material_storage->shader_initialize(scene_globals.default_shader);
 		material_storage->shader_set_code(scene_globals.default_shader, R"(
-// Default 3D material shader.
+// Default 3D material shader (Compatibility).
 
 shader_type spatial;
 
@@ -4100,11 +4100,11 @@ void fragment() {
 		scene_globals.overdraw_shader = material_storage->shader_allocate();
 		material_storage->shader_initialize(scene_globals.overdraw_shader);
 		material_storage->shader_set_code(scene_globals.overdraw_shader, R"(
-// 3D editor Overdraw debug draw mode shader.
+// 3D editor Overdraw debug draw mode shader (Compatibility).
 
 shader_type spatial;
 
-render_mode blend_add, unshaded;
+render_mode blend_add, unshaded, fog_disabled;
 
 void fragment() {
 	ALBEDO = vec3(0.4, 0.8, 0.8);
diff --git a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
index 55c6c420eb5..0b504eca0a9 100644
--- a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
@@ -737,7 +737,7 @@ void SceneShaderForwardClustered::init(const String p_defines) {
 		default_shader = material_storage->shader_allocate();
 		material_storage->shader_initialize(default_shader);
 		material_storage->shader_set_code(default_shader, R"(
-// Default 3D material shader (clustered).
+// Default 3D material shader (Forward+).
 
 shader_type spatial;
 
@@ -768,11 +768,11 @@ void fragment() {
 		material_storage->shader_initialize(overdraw_material_shader);
 		// Use relatively low opacity so that more "layers" of overlapping objects can be distinguished.
 		material_storage->shader_set_code(overdraw_material_shader, R"(
-// 3D editor Overdraw debug draw mode shader (clustered).
+// 3D editor Overdraw debug draw mode shader (Forward+).
 
 shader_type spatial;
 
-render_mode blend_add, unshaded;
+render_mode blend_add, unshaded, fog_disabled;
 
 void fragment() {
 	ALBEDO = vec3(0.4, 0.8, 0.8);
@@ -792,11 +792,11 @@ void fragment() {
 		debug_shadow_splits_material_shader = material_storage->shader_allocate();
 		material_storage->shader_initialize(debug_shadow_splits_material_shader);
 		material_storage->shader_set_code(debug_shadow_splits_material_shader, R"(
-// 3D debug shadow splits mode shader(mobile).
+// 3D debug shadow splits mode shader (Forward+).
 
 shader_type spatial;
 
-render_mode debug_shadow_splits;
+render_mode debug_shadow_splits, fog_disabled;
 
 void fragment() {
 	ALBEDO = vec3(1.0, 1.0, 1.0);
diff --git a/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp b/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
index 3592ee2f6d1..95ba76a707d 100644
--- a/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
+++ b/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
@@ -641,7 +641,7 @@ void SceneShaderForwardMobile::init(const String p_defines) {
 		default_shader = material_storage->shader_allocate();
 		material_storage->shader_initialize(default_shader);
 		material_storage->shader_set_code(default_shader, R"(
-// Default 3D material shader (mobile).
+// Default 3D material shader (Mobile).
 
 shader_type spatial;
 
@@ -671,11 +671,11 @@ void fragment() {
 		material_storage->shader_initialize(overdraw_material_shader);
 		// Use relatively low opacity so that more "layers" of overlapping objects can be distinguished.
 		material_storage->shader_set_code(overdraw_material_shader, R"(
-// 3D editor Overdraw debug draw mode shader (mobile).
+// 3D editor Overdraw debug draw mode shader (Mobile).
 
 shader_type spatial;
 
-render_mode blend_add, unshaded;
+render_mode blend_add, unshaded, fog_disabled;
 
 void fragment() {
 	ALBEDO = vec3(0.4, 0.8, 0.8);
@@ -696,11 +696,11 @@ void fragment() {
 		material_storage->shader_initialize(debug_shadow_splits_material_shader);
 		// Use relatively low opacity so that more "layers" of overlapping objects can be distinguished.
 		material_storage->shader_set_code(debug_shadow_splits_material_shader, R"(
-// 3D debug shadow splits mode shader(mobile).
+// 3D debug shadow splits mode shader (Mobile).
 
 shader_type spatial;
 
-render_mode debug_shadow_splits;
+render_mode debug_shadow_splits, fog_disabled;
 
 void fragment() {
 	ALBEDO = vec3(1.0, 1.0, 1.0);
diff --git a/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp b/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
index 62ecec39919..e61bb9eae82 100644
--- a/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
+++ b/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
@@ -1153,12 +1153,19 @@ void RendererSceneRenderRD::render_scene(const Ref<RenderSceneBuffers> &p_render
 
 	PagedArray<RID> empty;
 
-	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_UNSHADED) {
+	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_UNSHADED || get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_OVERDRAW) {
 		render_data.lights = &empty;
 		render_data.reflection_probes = &empty;
 		render_data.voxel_gi_instances = &empty;
 	}
 
+	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_UNSHADED ||
+			get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_OVERDRAW ||
+			get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_LIGHTING ||
+			get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_PSSM_SPLITS) {
+		render_data.decals = &empty;
+	}
+
 	Color clear_color;
 	if (p_render_buffers.is_valid() && p_reflection_probe.is_null()) {
 		clear_color = texture_storage->render_target_get_clear_request_color(rb->get_render_target());