Vulkan fixes

base/shaders/ssao_blur_pass.kong

@@ -109,7 +109,7 @@ fun ssao_blur_pass_frag(input: vert_out): float {
 			blur_weight_i = 0.008934;
 		}
 
-		var posadd: float = i;
+		var posadd: float = float(i);
 
 		var nor2: float3 = get_nor(sample_lod(gbuffer0, sampler_linear, input.tex + posadd * constants.dir_inv, 0.0).rg);
 		var influence_factor: float = step(discard_threshold, dot(nor2, nor));

base/shaders/ssao_pass.kong

@@ -71,7 +71,7 @@ fun ray_cast(view_ray: float3, dir: float3, vpos: float3): float {
 
 	// for (var i: int = 0; i < max_steps; i = i + 1) {
 	var i: int = 0;
-	while (i < max_steps) {
+	while (i < int(max_steps)) {
 		hit_coord += dir;
 		var delta: float = get_delta_depth(view_ray, hit_coord);
 		if (delta > 0.0 && delta < 0.2) {
@@ -88,8 +88,8 @@ fun ray_cast(view_ray: float3, dir: float3, vpos: float3): float {
 }
 
 fun tangent(n: float3): float3 {
-	var t1: float3 = cross(n, float3(0, 0, 1));
-	var t2: float3 = cross(n, float3(0, 1, 0));
+	var t1: float3 = cross(n, float3(0.0, 0.0, 1.0));
+	var t2: float3 = cross(n, float3(0.0, 1.0, 0.0));
 	if (length(t1) > length(t2)) {
 		return normalize(t1);
 	}