Validate triviality of the InstanceData and RenderElementInfo structs in Mobile and Forward+ renderers.

This is needed to avoid overhead that results from calling the constructor during calls to LocalVector.resize()

Author: clayjohn

servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h

@@ -328,6 +328,9 @@ class RenderForwardClustered : public RendererSceneRenderRD {
 			float uv_scale[4];
 		};
 
+		static_assert(std::is_trivially_destructible_v<InstanceData>);
+		static_assert(std::is_trivially_constructible_v<InstanceData>);
+
 		UBO ubo;
 
 		LocalVector<RID> uniform_buffers;
@@ -392,6 +395,9 @@ class RenderForwardClustered : public RendererSceneRenderRD {
 		uint32_t lod_index : 8;
 	};
 
+	static_assert(std::is_trivially_destructible_v<RenderElementInfo>);
+	static_assert(std::is_trivially_constructible_v<RenderElementInfo>);
+
 	template <PassMode p_pass_mode, uint32_t p_color_pass_flags = 0>
 	_FORCE_INLINE_ void _render_list_template(RenderingDevice::DrawListID p_draw_list, RenderingDevice::FramebufferFormatID p_framebuffer_Format, RenderListParameters *p_params, uint32_t p_from_element, uint32_t p_to_element);
 	void _render_list(RenderingDevice::DrawListID p_draw_list, RenderingDevice::FramebufferFormatID p_framebuffer_Format, RenderListParameters *p_params, uint32_t p_from_element, uint32_t p_to_element);

servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.h

@@ -211,7 +211,7 @@ class RenderForwardMobile : public RendererSceneRenderRD {
 			uint32_t flags;
 			uint32_t instance_uniforms_ofs; // Base offset in global buffer for instance variables.
 			uint32_t gi_offset; // GI information when using lightmapping (VCT or lightmap index).
-			uint32_t layer_mask = 1;
+			uint32_t layer_mask;
 			float lightmap_uv_scale[4]; // Doubles as uv_offset when needed.
 			uint32_t reflection_probes[2]; // Packed reflection probes.
 			uint32_t omni_lights[2]; // Packed omni lights.
@@ -222,6 +222,9 @@ class RenderForwardMobile : public RendererSceneRenderRD {
 			float uv_scale[4];
 		};
 
+		static_assert(std::is_trivially_destructible_v<InstanceData>);
+		static_assert(std::is_trivially_constructible_v<InstanceData>);
+
 		RID instance_buffer[RENDER_LIST_MAX];
 		uint32_t instance_buffer_size[RENDER_LIST_MAX] = { 0, 0, 0 };
 		LocalVector<InstanceData> instance_data[RENDER_LIST_MAX];
@@ -327,6 +330,9 @@ class RenderForwardMobile : public RendererSceneRenderRD {
 		uint32_t reserved : 23;
 	};
 
+	static_assert(std::is_trivially_destructible_v<RenderElementInfo>);
+	static_assert(std::is_trivially_constructible_v<RenderElementInfo>);
+
 	template <PassMode p_pass_mode>
 	_FORCE_INLINE_ void _render_list_template(RenderingDevice::DrawListID p_draw_list, RenderingDevice::FramebufferFormatID p_framebuffer_Format, RenderListParameters *p_params, uint32_t p_from_element, uint32_t p_to_element);
 	void _render_list(RenderingDevice::DrawListID p_draw_list, RenderingDevice::FramebufferFormatID p_framebuffer_Format, RenderListParameters *p_params, uint32_t p_from_element, uint32_t p_to_element);