Correctly apply transforms when getting a TextureView's bitmap (a9dc86b2) · Commits · e / os / android_frameworks_base

libs/hwui/LayerRenderer.cpp

+14 −1

Original line number	Diff line number	Diff line
		@@ -264,7 +264,7 @@ Layer* LayerRenderer::createTextureLayer(bool isOpaque) {
		layer->setFbo(0);
		layer->setAlpha(255, SkXfermode::kSrcOver_Mode);
		layer->layer.set(0.0f, 0.0f, 0.0f, 0.0f);
		layer->texCoords.set(0.0f, 1.0f, 0.0f, 1.0f);
		layer->texCoords.set(0.0f, 1.0f, 1.0f, 0.0f);
		layer->region.clear();
		layer->setRenderTarget(GL_NONE); // see ::updateTextureLayer()

		@@ -400,6 +400,18 @@ bool LayerRenderer::copyLayer(Layer* layer, SkBitmap* bitmap) {
		renderer.setViewport(bitmap->width(), bitmap->height());
		renderer.OpenGLRenderer::prepareDirty(0.0f, 0.0f,
		bitmap->width(), bitmap->height(), !layer->isBlend());

		glDisable(GL_SCISSOR_TEST);
		renderer.translate(0.0f, bitmap->height());
		renderer.scale(1.0f, -1.0f);

		mat4 texTransform(layer->getTexTransform());

		mat4 invert;
		invert.translate(0.0f, 1.0f, 0.0f);
		invert.scale(1.0f, -1.0f, 1.0f);
		layer->getTexTransform().multiply(invert);

		if ((error = glGetError()) != GL_NO_ERROR) goto error;

		{
		@@ -413,6 +425,7 @@ bool LayerRenderer::copyLayer(Layer* layer, SkBitmap* bitmap) {
		if ((error = glGetError()) != GL_NO_ERROR) goto error;
		}

		layer->getTexTransform().load(texTransform);
		status = true;
		}

tests/HwAccelerationTest/src/com/android/test/hwui/GLTextureViewActivity.java

+10 −8

Original line number	Diff line number	Diff line
		@@ -22,9 +22,11 @@ import android.app.Activity;
		import android.content.res.Resources;
		import android.graphics.Bitmap;
		import android.graphics.BitmapFactory;
		import android.graphics.Matrix;
		import android.graphics.SurfaceTexture;
		import android.opengl.GLUtils;
		import android.os.Bundle;
		import android.os.Environment;
		import android.util.Log;
		import android.view.Gravity;
		import android.view.TextureView;
		@@ -39,6 +41,7 @@ import javax.microedition.khronos.egl.EGLDisplay;
		import javax.microedition.khronos.egl.EGLSurface;
		import javax.microedition.khronos.opengles.GL;
		import java.io.BufferedOutputStream;
		import java.io.File;
		import java.io.FileNotFoundException;
		import java.io.FileOutputStream;
		import java.io.IOException;
		@@ -65,7 +68,8 @@ public class GLTextureViewActivity extends Activity implements TextureView.Surfa
		Bitmap b = mTextureView.getBitmap(800, 800);
		BufferedOutputStream out = null;
		try {
		out = new BufferedOutputStream(new FileOutputStream("/sdcard/out.png"));
		File dump = new File(Environment.getExternalStorageDirectory(), "out.png");
		out = new BufferedOutputStream(new FileOutputStream(dump));
		b.compress(Bitmap.CompressFormat.PNG, 100, out);
		} catch (FileNotFoundException e) {
		e.printStackTrace();
		@@ -168,10 +172,10 @@ public class GLTextureViewActivity extends Activity implements TextureView.Surfa
		private static final int TRIANGLE_VERTICES_DATA_UV_OFFSET = 3;
		private final float[] mTriangleVerticesData = {
		// X, Y, Z, U, V
		-1.0f, -1.0f, 0, 0.f, 0.f,
		1.0f, -1.0f, 0, 1.f, 0.f,
		-1.0f, 1.0f, 0, 0.f, 1.f,
		1.0f, 1.0f, 0, 1.f, 1.f,
		-1.0f, -1.0f, 0.0f, 0.0f, 0.0f,
		1.0f, -1.0f, 0.0f, 1.0f, 0.0f,
		-1.0f, 1.0f, 0.0f, 0.0f, 1.0f,
		1.0f, 1.0f, 0.0f, 1.0f, 1.0f,
		};

		@Override
		@@ -212,8 +216,6 @@ public class GLTextureViewActivity extends Activity implements TextureView.Surfa
		while (!mFinished) {
		checkCurrent();

		Log.d(LOG_TAG, "Rendering frame");

		glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
		checkGlError();

		@@ -237,7 +239,7 @@ public class GLTextureViewActivity extends Activity implements TextureView.Surfa
		checkEglError();

		try {
		Thread.sleep(20);
		Thread.sleep(2000);
		} catch (InterruptedException e) {
		// Ignore
		}

tests/HwAccelerationTest/src/com/android/test/hwui/TextureViewActivity.java

+57 −0

Original line number	Diff line number	Diff line
		@@ -17,16 +17,23 @@
		package com.android.test.hwui;

		import android.app.Activity;
		import android.graphics.Bitmap;
		import android.graphics.Matrix;
		import android.graphics.SurfaceTexture;
		import android.hardware.Camera;
		import android.os.Bundle;
		import android.os.Environment;
		import android.view.Gravity;
		import android.view.Surface;
		import android.view.TextureView;
		import android.view.View;
		import android.widget.Button;
		import android.widget.FrameLayout;

		import java.io.BufferedOutputStream;
		import java.io.File;
		import java.io.FileNotFoundException;
		import java.io.FileOutputStream;
		import java.io.IOException;

		@SuppressWarnings({"UnusedDeclaration"})
		@@ -44,6 +51,26 @@ public class TextureViewActivity extends Activity implements TextureView.Surface

		mTextureView = new TextureView(this);
		mTextureView.setSurfaceTextureListener(this);
		mTextureView.setOnClickListener(new View.OnClickListener() {
		@Override
		public void onClick(View v) {
		Bitmap b = mTextureView.getBitmap(800, 800);
		BufferedOutputStream out = null;
		try {
		File dump = new File(Environment.getExternalStorageDirectory(), "out.png");
		out = new BufferedOutputStream(new FileOutputStream(dump));
		b.compress(Bitmap.CompressFormat.PNG, 100, out);
		} catch (FileNotFoundException e) {
		e.printStackTrace();
		} finally {
		if (out != null) try {
		out.close();
		} catch (IOException e) {
		e.printStackTrace();
		}
		}
		}
		});

		Button button = new Button(this);
		button.setText("Remove/Add");
		@@ -73,6 +100,8 @@ public class TextureViewActivity extends Activity implements TextureView.Surface
		@Override
		public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
		mCamera = Camera.open();
		mCamera.setDisplayOrientation(getCameraOrientation());

		Camera.Size previewSize = mCamera.getParameters().getPreviewSize();
		mTextureView.setLayoutParams(new FrameLayout.LayoutParams(
		previewSize.width, previewSize.height, Gravity.CENTER));
		@@ -86,6 +115,34 @@ public class TextureViewActivity extends Activity implements TextureView.Surface
		mCamera.startPreview();
		}

		private int getCameraOrientation() {
		Camera.CameraInfo info = new Camera.CameraInfo();
		for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
		Camera.getCameraInfo(i, info);
		if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) break;
		}

		int rotation = getWindowManager().getDefaultDisplay().getRotation();
		int degrees = 0;

		switch (rotation) {
		case Surface.ROTATION_0:
		degrees = 0;
		break;
		case Surface.ROTATION_90:
		degrees = 90;
		break;
		case Surface.ROTATION_180:
		degrees = 180;
		break;
		case Surface.ROTATION_270:
		degrees = 270;
		break;
		}

		return (info.orientation - degrees + 360) % 360;
		}

		@Override
		public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
		// Ignored, the Camera does all the work for us