Disallow compute dispatch with zero dimensions.

drivers/vulkan/rendering_device_vulkan.cpp

@@ -8049,6 +8049,9 @@ void RenderingDeviceVulkan::compute_list_dispatch(ComputeListID p_list, uint32_t
 	ComputeList *cl = compute_list;
 
 #ifdef DEBUG_ENABLED
+	ERR_FAIL_COND_MSG(p_x_groups == 0, "Dispatch amount of X compute groups (" + itos(p_x_groups) + ") is zero.");
+	ERR_FAIL_COND_MSG(p_z_groups == 0, "Dispatch amount of Z compute groups (" + itos(p_z_groups) + ") is zero.");
+	ERR_FAIL_COND_MSG(p_y_groups == 0, "Dispatch amount of Y compute groups (" + itos(p_y_groups) + ") is zero.");
 	ERR_FAIL_COND_MSG(p_x_groups > limits.maxComputeWorkGroupCount[0],
 			"Dispatch amount of X compute groups (" + itos(p_x_groups) + ") is larger than device limit (" + itos(limits.maxComputeWorkGroupCount[0]) + ")");
 	ERR_FAIL_COND_MSG(p_y_groups > limits.maxComputeWorkGroupCount[1],
@@ -8103,6 +8106,12 @@ void RenderingDeviceVulkan::compute_list_dispatch_threads(ComputeListID p_list,
 	ERR_FAIL_COND(p_list != ID_TYPE_COMPUTE_LIST);
 	ERR_FAIL_COND(!compute_list);
 
+#ifdef DEBUG_ENABLED
+	ERR_FAIL_COND_MSG(p_x_threads == 0, "Dispatch amount of X compute threads (" + itos(p_x_threads) + ") is zero.");
+	ERR_FAIL_COND_MSG(p_y_threads == 0, "Dispatch amount of Y compute threads (" + itos(p_y_threads) + ") is zero.");
+	ERR_FAIL_COND_MSG(p_z_threads == 0, "Dispatch amount of Z compute threads (" + itos(p_z_threads) + ") is zero.");
+#endif
+
 	ComputeList *cl = compute_list;
 
 #ifdef DEBUG_ENABLED

servers/rendering/renderer_rd/renderer_scene_render_rd.cpp

@@ -3954,6 +3954,10 @@ void RendererSceneRenderRD::_update_volumetric_fog(RID p_render_buffers, RID p_e
 				kernel_size = Vector3i(int32_t(rb->volumetric_fog->width), int32_t(rb->volumetric_fog->height), int32_t(rb->volumetric_fog->depth));
 			}
 
+			if (kernel_size.x == 0 || kernel_size.y == 0 || kernel_size.z == 0) {
+				continue;
+			}
+
 			volumetric_fog.push_constant.position[0] = position.x;
 			volumetric_fog.push_constant.position[1] = position.y;
 			volumetric_fog.push_constant.position[2] = position.z;