Merge pull request #68628 from clayjohn/shadows

Implement is_animated and casts_shadows

2 files changed, 10 insertions, 2 deletions

diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp
index 2d6a793c9e..aaf223df1d 100644
--- a/drivers/gles3/storage/material_storage.cpp
+++ b/drivers/gles3/storage/material_storage.cpp
@@ -3421,6 +3421,8 @@ void SceneShaderData::set_code(const String &p_code) {
 	vertex_input_mask |= uses_bones << 9;
 	vertex_input_mask |= uses_weights << 10;
 	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:");
@@ -3541,11 +3543,15 @@ bool SceneShaderData::is_parameter_texture(const StringName &p_param) const {
 }
 
 bool SceneShaderData::is_animated() const {
-	return false;
+	return (uses_fragment_time && uses_discard) || (uses_vertex_time && uses_vertex);
 }
 
 bool SceneShaderData::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 SceneShaderData::get_default_parameter(const StringName &p_parameter) const {
diff --git a/drivers/gles3/storage/material_storage.h b/drivers/gles3/storage/material_storage.h
index 24d9a0fee1..9ebfc3097c 100644
--- a/drivers/gles3/storage/material_storage.h
+++ b/drivers/gles3/storage/material_storage.h
@@ -318,6 +318,8 @@ struct SceneShaderData : public ShaderData {
 	bool uses_depth_texture;
 	bool uses_normal_texture;
 	bool uses_time;
+	bool uses_vertex_time;
+	bool uses_fragment_time;
 	bool writes_modelview_or_projection;
 	bool uses_world_coordinates;
 	bool uses_tangent;