Avoid default fallback material when using world_vertex_coords

This avoids z-fighting between the opaque shader and the depth prepass shader

(cherry picked from commit 04846c1d6db029bacb388438307669438e1504af)

drivers/gles3/rasterizer_scene_gles3.cpp

@@ -205,7 +205,7 @@ void RasterizerSceneGLES3::_geometry_instance_add_surface_with_material(Geometry
 
 	GLES3::SceneMaterialData *material_shadow = nullptr;
 	void *surface_shadow = nullptr;
-	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip) {
+	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip && !p_material->shader_data->uses_world_coordinates) {
 		flags |= GeometryInstanceSurface::FLAG_USES_SHARED_SHADOW_MATERIAL;
 		material_shadow = static_cast<GLES3::SceneMaterialData *>(GLES3::MaterialStorage::get_singleton()->material_get_data(scene_globals.default_material, RS::SHADER_SPATIAL));
 

drivers/gles3/storage/material_storage.cpp

@@ -2889,6 +2889,7 @@ void SceneShaderData::set_code(const String &p_code) {
 	actions.render_mode_flags["unshaded"] = &unshaded;
 	actions.render_mode_flags["wireframe"] = &wireframe;
 	actions.render_mode_flags["particle_trails"] = &uses_particle_trails;
+	actions.render_mode_flags["world_vertex_coords"] = &uses_world_coordinates;
 
 	actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
 	actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;

servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp

@@ -3496,7 +3496,7 @@ void RenderForwardClustered::_geometry_instance_add_surface_with_material(Geomet
 
 	SceneShaderForwardClustered::MaterialData *material_shadow = nullptr;
 	void *surface_shadow = nullptr;
-	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_position && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip && !p_material->shader_data->uses_alpha_antialiasing && p_material->shader_data->cull_mode == SceneShaderForwardClustered::ShaderData::CULL_BACK && !p_material->shader_data->uses_point_size) {
+	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_position && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip && !p_material->shader_data->uses_alpha_antialiasing && p_material->shader_data->cull_mode == SceneShaderForwardClustered::ShaderData::CULL_BACK && !p_material->shader_data->uses_point_size && !p_material->shader_data->uses_world_coordinates) {
 		flags |= GeometryInstanceSurfaceDataCache::FLAG_USES_SHARED_SHADOW_MATERIAL;
 		material_shadow = static_cast<SceneShaderForwardClustered::MaterialData *>(RendererRD::MaterialStorage::get_singleton()->material_get_data(scene_shader.default_material, RendererRD::MaterialStorage::SHADER_TYPE_3D));
 

servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp

@@ -105,6 +105,7 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
 	actions.render_mode_flags["unshaded"] = &unshaded;
 	actions.render_mode_flags["wireframe"] = &wireframe;
 	actions.render_mode_flags["particle_trails"] = &uses_particle_trails;
+	actions.render_mode_flags["world_vertex_coords"] = &uses_world_coordinates;
 
 	actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
 	actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;

servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp

@@ -2409,7 +2409,7 @@ void RenderForwardMobile::_geometry_instance_add_surface_with_material(GeometryI
 
 	SceneShaderForwardMobile::MaterialData *material_shadow = nullptr;
 	void *surface_shadow = nullptr;
-	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip && !p_material->shader_data->uses_alpha_antialiasing) {
+	if (!p_material->shader_data->uses_particle_trails && !p_material->shader_data->writes_modelview_or_projection && !p_material->shader_data->uses_vertex && !p_material->shader_data->uses_discard && !p_material->shader_data->uses_depth_prepass_alpha && !p_material->shader_data->uses_alpha_clip && !p_material->shader_data->uses_alpha_antialiasing && !p_material->shader_data->uses_world_coordinates) {
 		flags |= GeometryInstanceSurfaceDataCache::FLAG_USES_SHARED_SHADOW_MATERIAL;
 		material_shadow = static_cast<SceneShaderForwardMobile::MaterialData *>(RendererRD::MaterialStorage::get_singleton()->material_get_data(scene_shader.default_material, RendererRD::MaterialStorage::SHADER_TYPE_3D));
 

servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp

@@ -106,6 +106,7 @@ void SceneShaderForwardMobile::ShaderData::set_code(const String &p_code) {
 	actions.render_mode_flags["unshaded"] = &unshaded;
 	actions.render_mode_flags["wireframe"] = &wireframe;
 	actions.render_mode_flags["particle_trails"] = &uses_particle_trails;
+	actions.render_mode_flags["world_vertex_coords"] = &uses_world_coordinates;
 
 	actions.usage_flag_pointers["ALPHA"] = &uses_alpha;
 	actions.usage_flag_pointers["ALPHA_SCISSOR_THRESHOLD"] = &uses_alpha_clip;