Duplicate the changes from the build folder that came through github …

…so that it works on internal builds

Reviewed By: corporateshark

Differential Revision: D66310710

fbshipit-source-id: 39285a33d6a2ddff4ef9acbe70523856bee644e8

shell/android/java/com/facebook/igl/sample/SampleLib.java

@@ -60,6 +60,8 @@ public static native void init(
 
   public static native void setClearColorValue(float r, float g, float b, float a);
 
+  public static native boolean isSRGBTextureFormat(int textureFormat);
+
   public static native void surfaceDestroyed(Surface surface);
 
   public static class RenderSessionConfig {

shell/android/java/com/facebook/igl/sample/SampleView.java

@@ -19,6 +19,7 @@
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.egl.EGLContext;
 import javax.microedition.khronos.egl.EGLDisplay;
+import javax.microedition.khronos.egl.EGLSurface;
 import javax.microedition.khronos.opengles.GL10;
 
 /// Simple view that sets up a GLES 2.0 rendering context
@@ -39,6 +40,9 @@ public SampleView(
     // Set the view to be transluscent since we provide an alpha channel below.
     this.getHolder().setFormat(PixelFormat.TRANSLUCENT);
 
+    setEGLWindowSurfaceFactory(
+        new SurfaceFactory(SampleLib.isSRGBTextureFormat(swapchainColorTextureFormat)));
+
     setEGLConfigChooser(new ConfigChooser(backendVersion));
 
     setRenderer(new Renderer(context, backendVersion, swapchainColorTextureFormat));
@@ -112,6 +116,35 @@ private static void checkEglError(String prompt, EGL10 egl) {
     }
   }
 
+  private static class SurfaceFactory implements GLSurfaceView.EGLWindowSurfaceFactory {
+    final int EGL_GL_COLORSPACE_KHR = 0x309D;
+    final int EGL_GL_COLORSPACE_SRGB_KHR = 0x3089;
+    final int EGL_GL_COLORSPACE_LINEAR_KHR = 0x308A;
+
+    private boolean mIsSRGBColorSpace;
+
+    SurfaceFactory(boolean isSRGB) {
+      mIsSRGBColorSpace = isSRGB;
+    }
+
+    @Override
+    public EGLSurface createWindowSurface(
+        EGL10 egl10, EGLDisplay eglDisplay, EGLConfig eglConfig, Object nativeWindow) {
+      int[] configAttribs = {
+        EGL_GL_COLORSPACE_KHR,
+        (mIsSRGBColorSpace ? EGL_GL_COLORSPACE_SRGB_KHR : EGL_GL_COLORSPACE_LINEAR_KHR),
+        EGL10.EGL_NONE
+      };
+
+      return egl10.eglCreateWindowSurface(eglDisplay, eglConfig, nativeWindow, configAttribs);
+    }
+
+    @Override
+    public void destroySurface(EGL10 egl10, EGLDisplay eglDisplay, EGLSurface eglSurface) {
+      egl10.eglDestroySurface(eglDisplay, eglSurface);
+    }
+  }
+
   /// Config chooser: handles specifying the requirements for the EGL config and choosing the
   // correct one.
   private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {