🚚 Move shader code to GLSL files

resources/shaders/snap-declarations.glsl

@@ -0,0 +1,18 @@
+// 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"
+#include "common/noise.glsl"
+#include "common/math2D.glsl"
+
+uniform sampler2D uDustTexture;
+uniform vec4 uDustColor;
+uniform vec2 uSeed;
+uniform float uDustScale;
+
+const float DUST_LAYERS      = 4;
+const float GROW_INTENSITY   = 0.05;
+const float SHRINK_INTENSITY = 0.05;
+const float WIND_INTENSITY   = 0.05;
+const float ACTOR_SCALE      = 1.2;
+const float PADDING          = ACTOR_SCALE / 2.0 - 0.5;