Adding first APK build

android/gles-shaders/main.vert

@@ -0,0 +1,38 @@
+#version 100
+
+// GLES port of engine/shaders/main.vert - the one real difference is
+// gl_Vertex, a desktop-only compatibility-profile builtin that doesn't
+// exist in GLES at all, replaced with an explicit "position" attribute
+// (see android/engine-patches/03-android-opengl-es-render.patch's
+// CreateShader() change, which binds it to attribute location 0 to match
+// the vertex arrays OpenGL.cc's GLES immediate-mode emulation submits).
+precision mediump float;
+
+attribute vec4 position;
+attribute vec2 texcoords;
+attribute float light;
+attribute vec4 color;
+
+varying vec2 TexCoords;
+varying float Light;
+varying vec4 Color;
+
+uniform mat4 view;
+uniform mat4 proj;
+
+// GLES has no glPointSize() (desktop-only, set from
+// opengl_begin_stars()) - point size must come from this builtin
+// instead. Only read by the rasterizer for GL_POINTS draws (i.e. only
+// matters for star.frag); harmless left unset for the other two shaders
+// built from this same vertex shader (main.vert). See
+// android/engine-patches/04-android-opengl-es-render.patch's
+// questshock_glPointSize()/questshock_glEnd().
+uniform float pointSize;
+
+void main() {
+    TexCoords = texcoords;
+    Light = light;
+    Color = color;
+    gl_Position = proj * view * position;
+    gl_PointSize = pointSize;
+}