Extend GLSurfaceView to make it easy to create an OpenGL ES 2.0 context (0dce2dd2) · Commits · e / os / android_frameworks_base

opengl/java/android/opengl/GLSurfaceView.java

+62 −6

Original line number	Diff line number	Diff line
		@@ -372,6 +372,39 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		setEGLConfigChooser(new ComponentSizeChooser(redSize, greenSize,
		blueSize, alphaSize, depthSize, stencilSize));
		}

		/**
		* Inform the default EGLContextFactory and default EGLConfigChooser
		* which EGLContext client version to pick.
		* <p>Use this method to create an OpenGL ES 2.0-compatible context.
		* Example:
		* <pre class="prettyprint">
		* public MyView(Context context) {
		* super(context);
		* setEGLContextClientVersion(2); // Pick an OpenGL ES 2.0 context.
		* setRenderer(new MyRenderer());
		* }
		* </pre>
		* <p>Note: Activities which require OpenGL ES 2.0 should indicate this by
		* setting @lt;uses-feature android:glEsVersion="0x00020000" /> in the activity's
		* AndroidManifest.xml file.
		* <p>If this method is called, it must be called before {@link #setRenderer(Renderer)}
		* is called.
		* <p>This method only affects the behavior of the default EGLContexFactory and the
		* default EGLConfigChooser. If
		* {@link #setEGLContextFactory(EGLContextFactory)} has been called, then the supplied
		* EGLContextFactory is responsible for creating an OpenGL ES 2.0-compatible context.
		* If
		* {@link #setEGLConfigChooser(EGLConfigChooser)} has been called, then the supplied
		* EGLConfigChooser is responsible for choosing an OpenGL ES 2.0-compatible config.
		* @param version The EGLContext client version to choose. Use 2 for OpenGL ES 2.0
		* @hide
		*/
		public void setEGLContextClientVersion(int version) {
		checkRenderThreadState();
		mEGLContextClientVersion = version;
		}

		/**
		* Set the rendering mode. When renderMode is
		* RENDERMODE_CONTINUOUSLY, the renderer is called
		@@ -623,10 +656,15 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context);
		}

		private static class DefaultContextFactory implements EGLContextFactory {
		private class DefaultContextFactory implements EGLContextFactory {
		private int EGL_CONTEXT_CLIENT_VERSION = 0x3098;

		public EGLContext createContext(EGL10 egl, EGLDisplay display, EGLConfig config) {
		return egl.eglCreateContext(display, config, EGL10.EGL_NO_CONTEXT, null);
		int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, mEGLContextClientVersion,
		EGL10.EGL_NONE };

		return egl.eglCreateContext(display, config, EGL10.EGL_NO_CONTEXT,
		mEGLContextClientVersion != 0 ? attrib_list : null);
		}

		public void destroyContext(EGL10 egl, EGLDisplay display,
		@@ -680,11 +718,12 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		EGLConfig chooseConfig(EGL10 egl, EGLDisplay display);
		}

		private static abstract class BaseConfigChooser
		private abstract class BaseConfigChooser
		implements EGLConfigChooser {
		public BaseConfigChooser(int[] configSpec) {
		mConfigSpec = configSpec;
		mConfigSpec = filterConfigSpec(configSpec);
		}

		public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
		int[] num_config = new int[1];
		if (!egl.eglChooseConfig(display, mConfigSpec, null, 0,
		@@ -715,9 +754,25 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		EGLConfig[] configs);

		protected int[] mConfigSpec;

		private int[] filterConfigSpec(int[] configSpec) {
		if (mEGLContextClientVersion != 2) {
		return configSpec;
		}
		/* We know none of the subclasses define EGL_RENDERABLE_TYPE.
		* And we know the configSpec is well formed.
		*/
		int len = configSpec.length;
		int[] newConfigSpec = new int[len + 2];
		System.arraycopy(configSpec, 0, newConfigSpec, 0, len-1);
		newConfigSpec[len-1] = EGL10.EGL_RENDERABLE_TYPE;
		newConfigSpec[len] = 4; /* EGL_OPENGL_ES2_BIT */
		newConfigSpec[len+1] = EGL10.EGL_NONE;
		return newConfigSpec;
		}
		}

		private static class ComponentSizeChooser extends BaseConfigChooser {
		private class ComponentSizeChooser extends BaseConfigChooser {
		public ComponentSizeChooser(int redSize, int greenSize, int blueSize,
		int alphaSize, int depthSize, int stencilSize) {
		super(new int[] {
		@@ -793,7 +848,7 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		* RGB565 as possible, with or without a depth buffer.
		*
		*/
		private static class SimpleEGLConfigChooser extends ComponentSizeChooser {
		private class SimpleEGLConfigChooser extends ComponentSizeChooser {
		public SimpleEGLConfigChooser(boolean withDepthBuffer) {
		super(4, 4, 4, 0, withDepthBuffer ? 16 : 0, 0);
		// Adjust target values. This way we'll accept a 4444 or
		@@ -1401,4 +1456,5 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
		private EGLWindowSurfaceFactory mEGLWindowSurfaceFactory;
		private GLWrapper mGLWrapper;
		private int mDebugFlags;
		private int mEGLContextClientVersion;
		}

opengl/tests/gl2_java/AndroidManifest.xml

+1 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@

		<manifest xmlns:android="http://schemas.android.com/apk/res/android"
		package="com.android.gl2java">
		<uses-feature android:glEsVersion="0x00020000" />
		<application
		android:label="@string/gl2java_activity">
		<activity android:name="GL2JavaActivity"

opengl/tests/gl2_java/src/com/android/gl2java/GL2JavaView.java

+1 −217

Original line number	Diff line number	Diff line
		@@ -49,226 +49,10 @@ class GL2JavaView extends GLSurfaceView {

		public GL2JavaView(Context context) {
		super(context);
		init(false, 0, 0);
		}

		public GL2JavaView(Context context, boolean translucent, int depth, int stencil) {
		super(context);
		init(translucent, depth, stencil);
		}

		private void init(boolean translucent, int depth, int stencil) {
		setEGLContextFactory(new ContextFactory());
		setEGLConfigChooser( translucent ?
		new ConfigChooser(8,8,8,8, depth, stencil) :
		new ConfigChooser(5,6,5,0, depth, stencil));
		setEGLContextClientVersion(2);
		setRenderer(new Renderer());
		}

		private static class ContextFactory implements GLSurfaceView.EGLContextFactory {
		private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
		public EGLContext createContext(EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
		Log.w(TAG, "creating OpenGL ES 2.0 context");
		checkEglError("Before eglCreateContext", egl);
		int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
		EGLContext context = egl.eglCreateContext(display, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
		checkEglError("After eglCreateContext", egl);
		return context;
		}

		public void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context) {
		egl.eglDestroyContext(display, context);
		}
		}

		private static void checkEglError(String prompt, EGL10 egl) {
		int error;
		while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
		Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
		}
		}

		private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {
		private static int EGL_OPENGL_ES2_BIT = 4;
		private static int[] s_configAttribs2 =
		{
		EGL10.EGL_RED_SIZE, 4,
		EGL10.EGL_GREEN_SIZE, 4,
		EGL10.EGL_BLUE_SIZE, 4,
		EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
		EGL10.EGL_NONE
		};

		public ConfigChooser(int r, int g, int b, int a, int depth, int stencil) {
		mRedSize = r;
		mGreenSize = g;
		mBlueSize = b;
		mAlphaSize = a;
		mDepthSize = depth;
		mStencilSize = stencil;
		}

		public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {

		int[] num_config = new int[1];
		egl.eglChooseConfig(display, s_configAttribs2, null, 0, num_config);

		int numConfigs = num_config[0];

		if (numConfigs <= 0) {
		throw new IllegalArgumentException("No configs match configSpec");
		}
		EGLConfig[] configs = new EGLConfig[numConfigs];
		egl.eglChooseConfig(display, s_configAttribs2, configs, numConfigs, num_config);
		// printConfigs(egl, display, configs);
		return chooseConfig(egl, display, configs);
		}

		public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display,
		EGLConfig[] configs) {
		EGLConfig closestConfig = null;
		int closestDistance = 1000;
		for(EGLConfig config : configs) {
		int d = findConfigAttrib(egl, display, config,
		EGL10.EGL_DEPTH_SIZE, 0);
		int s = findConfigAttrib(egl, display, config,
		EGL10.EGL_STENCIL_SIZE, 0);
		if (d >= mDepthSize && s>= mStencilSize) {
		int r = findConfigAttrib(egl, display, config,
		EGL10.EGL_RED_SIZE, 0);
		int g = findConfigAttrib(egl, display, config,
		EGL10.EGL_GREEN_SIZE, 0);
		int b = findConfigAttrib(egl, display, config,
		EGL10.EGL_BLUE_SIZE, 0);
		int a = findConfigAttrib(egl, display, config,
		EGL10.EGL_ALPHA_SIZE, 0);
		int distance = Math.abs(r - mRedSize)
		+ Math.abs(g - mGreenSize)
		+ Math.abs(b - mBlueSize)
		+ Math.abs(a - mAlphaSize);
		if (distance < closestDistance) {
		closestDistance = distance;
		closestConfig = config;
		}
		}
		}
		return closestConfig;
		}

		private int findConfigAttrib(EGL10 egl, EGLDisplay display,
		EGLConfig config, int attribute, int defaultValue) {

		if (egl.eglGetConfigAttrib(display, config, attribute, mValue)) {
		return mValue[0];
		}
		return defaultValue;
		}

		private void printConfigs(EGL10 egl, EGLDisplay display,
		EGLConfig[] configs) {
		int numConfigs = configs.length;
		Log.w(TAG, String.format("%d configurations", numConfigs));
		for (int i = 0; i < numConfigs; i++) {
		Log.w(TAG, String.format("Configuration %d:\n", i));
		printConfig(egl, display, configs[i]);
		}
		}

		private void printConfig(EGL10 egl, EGLDisplay display,
		EGLConfig config) {
		int[] attributes = {
		EGL10.EGL_BUFFER_SIZE,
		EGL10.EGL_ALPHA_SIZE,
		EGL10.EGL_BLUE_SIZE,
		EGL10.EGL_GREEN_SIZE,
		EGL10.EGL_RED_SIZE,
		EGL10.EGL_DEPTH_SIZE,
		EGL10.EGL_STENCIL_SIZE,
		EGL10.EGL_CONFIG_CAVEAT,
		EGL10.EGL_CONFIG_ID,
		EGL10.EGL_LEVEL,
		EGL10.EGL_MAX_PBUFFER_HEIGHT,
		EGL10.EGL_MAX_PBUFFER_PIXELS,
		EGL10.EGL_MAX_PBUFFER_WIDTH,
		EGL10.EGL_NATIVE_RENDERABLE,
		EGL10.EGL_NATIVE_VISUAL_ID,
		EGL10.EGL_NATIVE_VISUAL_TYPE,
		0x3030, // EGL10.EGL_PRESERVED_RESOURCES,
		EGL10.EGL_SAMPLES,
		EGL10.EGL_SAMPLE_BUFFERS,
		EGL10.EGL_SURFACE_TYPE,
		EGL10.EGL_TRANSPARENT_TYPE,
		EGL10.EGL_TRANSPARENT_RED_VALUE,
		EGL10.EGL_TRANSPARENT_GREEN_VALUE,
		EGL10.EGL_TRANSPARENT_BLUE_VALUE,
		0x3039, // EGL10.EGL_BIND_TO_TEXTURE_RGB,
		0x303A, // EGL10.EGL_BIND_TO_TEXTURE_RGBA,
		0x303B, // EGL10.EGL_MIN_SWAP_INTERVAL,
		0x303C, // EGL10.EGL_MAX_SWAP_INTERVAL,
		EGL10.EGL_LUMINANCE_SIZE,
		EGL10.EGL_ALPHA_MASK_SIZE,
		EGL10.EGL_COLOR_BUFFER_TYPE,
		EGL10.EGL_RENDERABLE_TYPE,
		0x3042 // EGL10.EGL_CONFORMANT
		};
		String[] names = {
		"EGL_BUFFER_SIZE",
		"EGL_ALPHA_SIZE",
		"EGL_BLUE_SIZE",
		"EGL_GREEN_SIZE",
		"EGL_RED_SIZE",
		"EGL_DEPTH_SIZE",
		"EGL_STENCIL_SIZE",
		"EGL_CONFIG_CAVEAT",
		"EGL_CONFIG_ID",
		"EGL_LEVEL",
		"EGL_MAX_PBUFFER_HEIGHT",
		"EGL_MAX_PBUFFER_PIXELS",
		"EGL_MAX_PBUFFER_WIDTH",
		"EGL_NATIVE_RENDERABLE",
		"EGL_NATIVE_VISUAL_ID",
		"EGL_NATIVE_VISUAL_TYPE",
		"EGL_PRESERVED_RESOURCES",
		"EGL_SAMPLES",
		"EGL_SAMPLE_BUFFERS",
		"EGL_SURFACE_TYPE",
		"EGL_TRANSPARENT_TYPE",
		"EGL_TRANSPARENT_RED_VALUE",
		"EGL_TRANSPARENT_GREEN_VALUE",
		"EGL_TRANSPARENT_BLUE_VALUE",
		"EGL_BIND_TO_TEXTURE_RGB",
		"EGL_BIND_TO_TEXTURE_RGBA",
		"EGL_MIN_SWAP_INTERVAL",
		"EGL_MAX_SWAP_INTERVAL",
		"EGL_LUMINANCE_SIZE",
		"EGL_ALPHA_MASK_SIZE",
		"EGL_COLOR_BUFFER_TYPE",
		"EGL_RENDERABLE_TYPE",
		"EGL_CONFORMANT"
		};
		int[] value = new int[1];
		for (int i = 0; i < attributes.length; i++) {
		int attribute = attributes[i];
		String name = names[i];
		if ( egl.eglGetConfigAttrib(display, config, attribute, value)) {
		Log.w(TAG, String.format(" %s: %d\n", name, value[0]));
		} else {
		// Log.w(TAG, String.format(" %s: failed\n", name));
		while (egl.eglGetError() != EGL10.EGL_SUCCESS);
		}
		}
		}

		// Subclasses can adjust these values:
		protected int mRedSize;
		protected int mGreenSize;
		protected int mBlueSize;
		protected int mAlphaSize;
		protected int mDepthSize;
		protected int mStencilSize;
		private int[] mValue = new int[1];
		}

		private static class Renderer implements GLSurfaceView.Renderer {

		public Renderer() {