Improve bloom effect (#12916)

* Remove the built-in exposure factor of 2.5
* Add physics-based bloom (https://learnopengl.com/Guest-Articles/2022/Phys.-Based-Bloom)
* Add luminance scaling for bloom layer to simulate HDR
* Add setting to control bloom strength

builtin/settingtypes.txt

@@ -470,21 +470,19 @@ enable_bloom (Enable Bloom) bool false
 #    bottom-left - raw base image, bottom-right - bloom texture.
 enable_bloom_debug (Enable Bloom Debug) bool false
 
-#    Set to true to use dedicated texture at each step of bloom effect.
-#    This is a compatibility setting to avoid visual artifacts 
-#    on certain GPUs and video drivers.
-enable_bloom_dedicated_texture (Enable Bloom Dedicated Texture) bool false
-
-#    Set the intensity of bloom
+#    Defines how much bloom is applied to the rendered image
 #    Smaller values make bloom more subtle
 #    Range: from 0.01 to 1.0, default: 0.05
 bloom_intensity (Bloom Intensity) float 0.05 0.01 1.0
 
-#    Set the radius of the bloom filter in pixels.
-#    Larger values render more glow around bright objects
-#    at the cost of higher resource consumption.
-#    Range: from 1 to 64, default: 16
-bloom_radius (Bloom Radius) int 16 1 64
+#    Defines the magnitude of bloom overexposure.
+#    Range: from 0.1 to 10.0, default: 1.0
+bloom_strength_factor (Bloom Strength Factor) float 1.0 0.1 10.0
+
+#    Logical value that controls how far the bloom effect spreads
+#    from the bright objects.
+#    Range: from 0.1 to 8, default: 1
+bloom_radius (Bloom Radius) float 1 0.1 8
 
 
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