Implement is_animated and casts_shadows

This allows the renderer to correctly decide when to update shadow maps

This PR also adds TIME to a few missing places

3 files changed, 16 insertions, 4 deletions

diff --git a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
index 86425512b8..d6dd56c959 100644
--- a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
@@ -2403,6 +2403,8 @@ void RenderForwardClustered::_render_particle_collider_heightfield(RID p_fb, con
 	scene_data.z_far = p_cam_projection.get_z_far();
 	scene_data.dual_paraboloid_side = 0;
 	scene_data.opaque_prepass_threshold = 0.0;
+	scene_data.time = time;
+	scene_data.time_step = time_step;
 
 	RenderDataRD render_data;
 	render_data.scene_data = &scene_data;
@@ -2445,6 +2447,8 @@ void RenderForwardClustered::_render_material(const Transform3D &p_cam_transform
 	scene_data.material_uv2_mode = false;
 	scene_data.opaque_prepass_threshold = 0.0f;
 	scene_data.emissive_exposure_normalization = p_exposure_normalization;
+	scene_data.time = time;
+	scene_data.time_step = time_step;
 
 	RenderDataRD render_data;
 	render_data.scene_data = &scene_data;
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 c1b23af82f..d2f66896d7 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
@@ -151,6 +151,8 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
 	depth_test = DepthTest(depth_testi);
 	cull_mode = Cull(cull_modei);
 	uses_screen_texture_mipmaps = gen_code.uses_screen_texture_mipmaps;
+	uses_vertex_time = gen_code.uses_vertex_time;
+	uses_fragment_time = gen_code.uses_fragment_time;
 
 #if 0
 	print_line("**compiling shader:");
@@ -457,11 +459,15 @@ bool SceneShaderForwardClustered::ShaderData::is_parameter_texture(const StringN
 }
 
 bool SceneShaderForwardClustered::ShaderData::is_animated() const {
-	return false;
+	return (uses_fragment_time && uses_discard) || (uses_vertex_time && uses_vertex);
 }
 
 bool SceneShaderForwardClustered::ShaderData::casts_shadows() const {
-	return false;
+	bool has_read_screen_alpha = uses_screen_texture || uses_depth_texture || uses_normal_texture;
+	bool has_base_alpha = (uses_alpha && !uses_alpha_clip) || has_read_screen_alpha;
+	bool has_alpha = has_base_alpha || uses_blend_alpha;
+
+	return !has_alpha || (uses_depth_pre_pass && !(depth_draw == DEPTH_DRAW_DISABLED || depth_test == DEPTH_TEST_DISABLED));
 }
 
 Variant SceneShaderForwardClustered::ShaderData::get_default_parameter(const StringName &p_parameter) const {
diff --git a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h
index a9a9fa94de..194edf2dcb 100644
--- a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h
+++ b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h
@@ -150,8 +150,8 @@ public:
 		String code;
 		HashMap<StringName, HashMap<int, RID>> default_texture_params;
 
-		DepthDraw depth_draw;
-		DepthTest depth_test;
+		DepthDraw depth_draw = DEPTH_DRAW_OPAQUE;
+		DepthTest depth_test = DEPTH_TEST_ENABLED;
 
 		bool uses_point_size = false;
 		bool uses_alpha = false;
@@ -172,6 +172,8 @@ public:
 		bool uses_depth_texture = false;
 		bool uses_normal_texture = false;
 		bool uses_time = false;
+		bool uses_vertex_time = false;
+		bool uses_fragment_time = false;
 		bool writes_modelview_or_projection = false;
 		bool uses_world_coordinates = false;
 		bool uses_screen_texture_mipmaps = false;