🚚 Move shader code to GLSL files

resources/shaders/tv-declarations.glsl

@@ -0,0 +1,12 @@
+// Inject some common shader snippets. It is only possible to include glsl files from the
+// "common" directory. Also, the files in the "common" directory are not allowed to
+// include any further files.
+#include "common/uniforms.glsl"
+
+uniform vec3 uColor;
+
+const float BLUR_WIDTH = 0.01;  // Width of the gradients.
+const float TB_TIME    = 0.7;   // Relative time for the top/bottom animation.
+const float LR_TIME    = 0.4;   // Relative time for the left/right animation.
+const float LR_DELAY   = 0.6;   // Delay after which the left/right animation starts.
+const float FF_TIME    = 0.1;   // Relative time for the final fade to transparency.