what done?

app/build/intermediates/assets/debug/shader/simpleVertexShader.glsl

@@ -0,0 +1,12 @@
+attribute vec4 position;
+attribute vec2 texCoords;
+
+varying vec2 pass_TexCoords;
+
+void main() {
+
+    gl_Position = position;
+    pass_TexCoords.x = texCoords.x;
+    pass_TexCoords.y = -texCoords.y;
+
+}