初始化内容

shader/include/tonemap.glsl

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+/* Copyright (c) 2018-2024, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+// From http://filmicworlds.com/blog/filmic-tonemapping-operators/
+vec3 Uncharted2Tonemap(vec3 color)
+{
+	float A = 0.15;
+	float B = 0.50;
+	float C = 0.10;
+	float D = 0.20;
+	float E = 0.02;
+	float F = 0.30;
+	float W = 11.2;
+	return ((color*(A*color+C*B)+D*E)/(color*(A*color+B)+D*F))-E/F;
+}
+
+// HDR颜色 + 曝光、gamma -> 屏幕颜色
+vec4 tonemap(vec4 color)
+{
+	vec3 outcol = Uncharted2Tonemap(color.rgb * pass.exposure);
+	outcol = outcol * (1.0f / Uncharted2Tonemap(vec3(11.2f)));	
+	return vec4(pow(outcol, vec3(1.0f / pass.gamma)), color.a);
+}