Vulcan Nightmare

Experimentally bringing up vulcan support

assets/shaders/postprocess.frag.glsl

@@ -0,0 +1,20 @@
+#version 450
+
+layout(set = 0, binding = 0) uniform sampler2D uScene;
+
+layout(location = 0) in vec2 TexCoord;
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    vec3 hdr = texture(uScene, TexCoord).rgb;
+    // Shoulder tone map
+    vec3 mapped = hdr;
+    for (int i = 0; i < 3; i++) {
+        if (mapped[i] > 0.9) {
+            float excess = mapped[i] - 0.9;
+            mapped[i] = 0.9 + 0.1 * excess / (excess + 0.1);
+        }
+    }
+    outColor = vec4(mapped, 1.0);
+}