Add handling for camera intrinsics

openVulkanoCpp/Shader/background.vert

@@ -17,6 +17,13 @@ layout(set = 1, binding = 0) uniform CameraData
 	float pixelScaleFactor;
 } cam;
 
+layout(set = 2, binding = 0) uniform RealCameraData
+{
+	mat3 intrinsic;
+	int width;
+	int height;
+} realCam;
+
 layout(location = 0) out vec2 textureCoordinates;
 
 const float FLOAT_MAX_LESS_THAN_1 = 0.999999940395355224609;
@@ -28,20 +35,24 @@ const vec2 TEX_COORDS[4] = vec2[] (
 	vec2(1, 0), vec2(0, 0), vec2(1, 1), vec2(0, 1)
 );
 
-float realFov = 53; //TODO
-float realScale = tan(radians(realFov * 0.5)) * 2;
-float realAspect = 1.33333333;
-
 void main() {
 	vec4 position = PLANE[gl_VertexIndex];
 
 	// Calculate the scaling factors for width and height
+	float width = realCam.width;
+	float realScale = realCam.intrinsic[0][0] / width;
+	float realAspect = width / realCam.height;
 	float scaleX = realScale / cam.scaleFactor;
 	float scaleY = cam.aspect / realAspect * scaleX;
 
 	// Scale the quad's position
 	position.xy *= vec2(scaleX, scaleY);
 
+	// Handle center
+	vec2 centerOffset = realCam.intrinsic[2].xy / vec2(realCam.width, realCam.height);
+	centerOffset -= 0.5;
+	position.xy += centerOffset;
+
 	gl_Position = position;
 	textureCoordinates = TEX_COORDS[gl_VertexIndex];
 }