1 files changed, 13 insertions, 0 deletions
diff --git a/src/effects/shaders/+glslcore/gammaadjust.frag b/src/effects/shaders/+glslcore/gammaadjust.frag
new file mode 100644
index 0000000..7efdd89
--- /dev/null
+++ b/src/effects/shaders/+glslcore/gammaadjust.frag
@@ -0,0 +1,13 @@
+#version 150 core
+in vec2 qt_TexCoord0;
+uniform float qt_Opacity;
+uniform sampler2D source;
+uniform float gamma;
+out vec4 fragColor;
+
+void main(void) {
+    vec4 originalColor = texture(source, qt_TexCoord0.st);
+    originalColor.rgb = originalColor.rgb / max(1.0/256.0, originalColor.a);
+    vec3 adjustedColor = pow(originalColor.rgb, vec3(gamma));
+    fragColor = vec4(adjustedColor * originalColor.a, originalColor.a) * qt_Opacity;
+}