commiting for now, gn

assets/shaders/engine/editorWaveforms.frag

@@ -0,0 +1,31 @@
+#pragma header
+#extension GL_EXT_gpu_shader4 : enable
+
+// Used in charter by waveforms -lunar
+
+uniform vec2 textureRes;
+
+uniform sampler2D waveformTexture;
+uniform ivec2 waveformSize;
+
+float getAmplitude() {
+	float amplitudeRet = 0.; // look in charter for more how it works -lunar
+
+	vec2 pixel = openfl_TextureCoordv * textureRes;
+	float pixelID = floor(pixel.y/3.);
+	
+	vec2 wavePixel = vec2(int(pixelID)%waveformSize.x, floor(pixelID/waveformSize.x));
+	vec4 waveData = texture2D(waveformTexture, wavePixel / waveformSize);
+
+	switch (int(pixel.y) % 3) {
+		case 0: amplitudeRet = waveData.r; break;
+		case 1: amplitudeRet = waveData.g; break;
+		case 2: amplitudeRet = waveData.b; break;
+	}
+	return amplitudeRet;
+}
+
+void main()
+{
+	gl_FragColor = vec4(vec3(getAmplitude()), 1.);
+}