Add hooks for hardware accelerated WebView. (da8532c6) · Commits · e / os / android_frameworks_base

core/java/android/view/GLES20Canvas.java

+24 −1

Original line number	Diff line number	Diff line
		@@ -56,6 +56,8 @@ class GLES20Canvas extends Canvas {

		private DrawFilter mFilter;

		private boolean mContextLocked;

		///////////////////////////////////////////////////////////////////////////
		// JNI
		///////////////////////////////////////////////////////////////////////////
		@@ -149,6 +151,27 @@ class GLES20Canvas extends Canvas {

		private native void nPrepare(int renderer);

		@Override
		public boolean acquireContext() {
		if (!mContextLocked) {
		nAcquireContext(mRenderer);
		mContextLocked = true;
		}
		return mContextLocked;
		}

		private native void nAcquireContext(int renderer);

		@Override
		public void releaseContext() {
		if (mContextLocked) {
		nReleaseContext(mRenderer);
		mContextLocked = false;
		}
		}

		private native void nReleaseContext(int renderer);

		///////////////////////////////////////////////////////////////////////////
		// Clipping
		///////////////////////////////////////////////////////////////////////////

+12 −0

Original line number	Diff line number	Diff line
		@@ -84,6 +84,16 @@ static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas,
		renderer->prepare();
		}

		static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer) {
		renderer->acquireContext();
		}

		static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer) {
		renderer->releaseContext();
		}

		// ----------------------------------------------------------------------------
		// State
		// ----------------------------------------------------------------------------
		@@ -374,6 +384,8 @@ static JNINativeMethod gMethods[] = {
		{ "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Canvas_destroyRenderer },
		{ "nSetViewport", "(III)V", (void*) android_view_GLES20Canvas_setViewport },
		{ "nPrepare", "(I)V", (void*) android_view_GLES20Canvas_prepare },
		{ "nAcquireContext", "(I)V", (void*) android_view_GLES20Canvas_acquireContext },
		{ "nReleaseContext", "(I)V", (void*) android_view_GLES20Canvas_releaseContext },

		{ "nSave", "(II)I", (void*) android_view_GLES20Canvas_save },
		{ "nRestore", "(I)V", (void*) android_view_GLES20Canvas_restore },

+46 −1

Original line number	Diff line number	Diff line
		@@ -1552,6 +1552,51 @@ public class Canvas {
		restore();
		}

		/**
		* <p>Acquires the Canvas context. After invoking this method, the Canvas
		* context can be modified by the caller. For instance, if you acquire
		* the context of an OpenGL Canvas you can reset the GL viewport, scissor,
		* etc.</p>
		*
		* <p>A call to {@link #acquireContext()} should aways be followed by
		* a call to {@link #releaseContext()}, preferrably using a try block:</p>
		*
		* <pre>
		* try {
		* if (canvas.acquireContext()) {
		* // Use the canvas and/or its context
		* }
		* } finally {
		* canvas.releaseContext();
		* }
		* </pre>
		*
		* <p>Acquiring the context can be an expensive operation and should not
		* be done unless absolutely necessary.</p>
		*
		* <p>Applications should never invoke this method directly.</p>
		*
		* @return True if the context could be acquired successfully, false
		* otherwise (if the context is already acquired for instance.)
		*
		* @see #releaseContext()
		*
		* @hide
		*/
		public boolean acquireContext() {
		return false;
		}

		/**
		* <p>Release the context acquired with {@link #acquireContext()}.</p>
		*
		* @see #acquireContext()
		*
		* @hide
		*/
		public void releaseContext() {
		}

		@Override
		protected void finalize() throws Throwable {
		try {

+23 −0

Original line number	Diff line number	Diff line
		@@ -143,6 +143,29 @@ void OpenGLRenderer::prepare() {
		mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight);
		}

		void OpenGLRenderer::acquireContext() {
		if (mCaches.currentProgram) {
		if (mCaches.currentProgram->isInUse()) {
		mCaches.currentProgram->remove();
		mCaches.currentProgram = NULL;
		}
		}
		}

		void OpenGLRenderer::releaseContext() {
		glViewport(0, 0, mSnapshot->viewport.getWidth(), mSnapshot->viewport.getHeight());

		glEnable(GL_SCISSOR_TEST);
		setScissorFromClip();

		if (mCaches.blend) {
		glEnable(GL_BLEND);
		glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode);
		} else {
		glDisable(GL_BLEND);
		}
		}

		///////////////////////////////////////////////////////////////////////////////
		// State management
		///////////////////////////////////////////////////////////////////////////////

+2 −0

Original line number	Diff line number	Diff line
		@@ -58,6 +58,8 @@ public:

		void setViewport(int width, int height);
		void prepare();
		void acquireContext();
		void releaseContext();

		int getSaveCount() const;
		int save(int flags);