1 files changed, 37 insertions, 0 deletions
diff --git a/system/shaders/GL/1.5/gl_output.glsl b/system/shaders/GL/1.5/gl_output.glsl
new file mode 100644
index 0000000..9823102
--- /dev/null
+++ b/system/shaders/GL/1.5/gl_output.glsl
@@ -0,0 +1,37 @@
+#if defined(XBMC_DITHER)
+uniform sampler2D m_dither;
+uniform float     m_ditherquant;
+uniform vec2      m_dithersize;
+#endif
+#if defined(KODI_3DLUT)
+uniform float     m_CLUTsize;
+uniform sampler3D m_CLUT;
+#endif
+
+void main()
+{
+  vec4 rgb = process();
+
+#if defined(KODI_3DLUT)
+  // FIXME: can this be optimized?
+  rgb  = texture(m_CLUT, (rgb.rgb*(m_CLUTsize-1.0) + 0.5) / m_CLUTsize);
+#endif
+
+#if defined(XBMC_FULLRANGE)
+#if __VERSION__ <= 120
+  rgb = (rgb-(16.0/255.0)) * 255.0/219.0;
+#else
+  rgb = clamp((rgb-(16.0/255.0)) * 255.0/219.0, 0, 1);
+#endif
+#endif
+
+#if defined(XBMC_DITHER)
+  vec2 ditherpos  = gl_FragCoord.xy / m_dithersize;
+  // ditherval is multiplied by 65536/(dither_size^2) to make it [0,1[
+  // FIXME: scale dither values before uploading?
+  float ditherval = texture(m_dither, ditherpos).r * 16.0;
+  rgb = floor(rgb * m_ditherquant + ditherval) / m_ditherquant;
+#endif
+
+  fragColor = rgb;
+}