Update GLTextureView sample to do something real.
Change-Id: I55a62434ae0b602522221689626f6b4155bd0d91
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/GLTextureViewActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/GLTextureViewActivity.java
index 1dfeb4e..e1ca756 100644
--- a/tests/HwAccelerationTest/src/com/android/test/hwui/GLTextureViewActivity.java
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/GLTextureViewActivity.java
@@ -19,13 +19,17 @@
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.app.Activity;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
import android.graphics.SurfaceTexture;
-import android.opengl.GLES20;
+import android.opengl.GLUtils;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.TextureView;
import android.view.View;
+import android.view.ViewGroup;
import android.widget.FrameLayout;
import javax.microedition.khronos.egl.EGL10;
@@ -36,6 +40,12 @@
import javax.microedition.khronos.egl.EGLSurface;
import javax.microedition.khronos.opengles.GL;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+
+import static android.opengl.GLES20.*;
+
@SuppressWarnings({"UnusedDeclaration"})
public class GLTextureViewActivity extends Activity implements TextureView.SurfaceTextureListener {
private RenderThread mRenderThread;
@@ -48,12 +58,14 @@
mTextureView = new TextureView(this);
mTextureView.setSurfaceTextureListener(this);
- setContentView(mTextureView, new FrameLayout.LayoutParams(500, 400, Gravity.CENTER));
+ setContentView(mTextureView, new FrameLayout.LayoutParams(
+ ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT,
+ Gravity.CENTER));
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
- mRenderThread = new RenderThread(surface);
+ mRenderThread = new RenderThread(getResources(), surface);
mRenderThread.start();
mTextureView.setCameraDistance(5000);
@@ -97,7 +109,8 @@
private volatile boolean mFinished;
- private SurfaceTexture mSurface;
+ private final Resources mResources;
+ private final SurfaceTexture mSurface;
private EGL10 mEgl;
private EGLDisplay mEglDisplay;
@@ -106,26 +119,96 @@
private EGLSurface mEglSurface;
private GL mGL;
- RenderThread(SurfaceTexture surface) {
+ RenderThread(Resources resources, SurfaceTexture surface) {
+ mResources = resources;
mSurface = surface;
}
+ private static final String sSimpleVS =
+ "attribute vec4 position;\n" +
+ "attribute vec2 texCoords;\n" +
+ "varying vec2 outTexCoords;\n" +
+ "\nvoid main(void) {\n" +
+ " outTexCoords = texCoords;\n" +
+ " gl_Position = position;\n" +
+ "}\n\n";
+ private static final String sSimpleFS =
+ "precision mediump float;\n\n" +
+ "varying vec2 outTexCoords;\n" +
+ "uniform sampler2D texture;\n" +
+ "\nvoid main(void) {\n" +
+ " gl_FragColor = texture2D(texture, outTexCoords);\n" +
+ "}\n\n";
+
+ private static final int FLOAT_SIZE_BYTES = 4;
+ private static final int TRIANGLE_VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
+ private static final int TRIANGLE_VERTICES_DATA_POS_OFFSET = 0;
+ 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,
+ };
+
@Override
public void run() {
initGL();
+
+ FloatBuffer triangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length
+ * FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
+ triangleVertices.put(mTriangleVerticesData).position(0);
- float red = 1.0f;
+ int texture = loadTexture(R.drawable.large_photo);
+ int program = buildProgram(sSimpleVS, sSimpleFS);
+
+ int attribPosition = glGetAttribLocation(program, "position");
+ checkGlError();
+
+ int attribTexCoords = glGetAttribLocation(program, "texCoords");
+ checkGlError();
+
+ int uniformTexture = glGetUniformLocation(program, "texture");
+ checkGlError();
+
+ glBindTexture(GL_TEXTURE_2D, texture);
+ checkGlError();
+
+ glUseProgram(program);
+ checkGlError();
+
+ glEnableVertexAttribArray(attribPosition);
+ checkGlError();
+
+ glEnableVertexAttribArray(attribTexCoords);
+ checkGlError();
+
+ glUniform1i(texture, 0);
+ checkGlError();
+
while (!mFinished) {
checkCurrent();
Log.d(LOG_TAG, "Rendering frame");
- GLES20.glClearColor(red, 0.0f, 0.0f, 1.0f);
+ glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
checkGlError();
- GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+ glClear(GL_COLOR_BUFFER_BIT);
checkGlError();
+ // drawQuad
+ triangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
+ glVertexAttribPointer(attribPosition, 3, GL_FLOAT, false,
+ TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
+
+ triangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
+ glVertexAttribPointer(attribTexCoords, 3, GL_FLOAT, false,
+ TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
+
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) {
throw new RuntimeException("Cannot swap buffers");
}
@@ -136,14 +219,90 @@
} catch (InterruptedException e) {
// Ignore
}
-
- red += 0.021f;
- if (red > 1.0f) red = 0.0f;
}
finishGL();
}
+ private int loadTexture(int resource) {
+ int[] textures = new int[1];
+
+ glActiveTexture(GL_TEXTURE0);
+ glGenTextures(1, textures, 0);
+ checkGlError();
+
+ int texture = textures[0];
+ glBindTexture(GL_TEXTURE_2D, texture);
+ checkGlError();
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+ Bitmap bitmap = BitmapFactory.decodeResource(mResources, resource);
+
+ GLUtils.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap, GL_UNSIGNED_BYTE, 0);
+ checkGlError();
+
+ bitmap.recycle();
+
+ return texture;
+ }
+
+ private int buildProgram(String vertex, String fragment) {
+ int vertexShader = buildShader(vertex, GL_VERTEX_SHADER);
+ if (vertexShader == 0) return 0;
+
+ int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER);
+ if (fragmentShader == 0) return 0;
+
+ int program = glCreateProgram();
+ glAttachShader(program, vertexShader);
+ checkGlError();
+
+ glAttachShader(program, fragmentShader);
+ checkGlError();
+
+ glLinkProgram(program);
+ checkGlError();
+
+ int[] status = new int[1];
+ glGetProgramiv(program, GL_LINK_STATUS, status, 0);
+ if (status[0] != GL_TRUE) {
+ String error = glGetProgramInfoLog(program);
+ Log.d(LOG_TAG, "Error while linking program:\n" + error);
+ glDeleteShader(vertexShader);
+ glDeleteShader(fragmentShader);
+ glDeleteProgram(program);
+ return 0;
+ }
+
+ return program;
+ }
+
+ private int buildShader(String source, int type) {
+ int shader = glCreateShader(type);
+
+ glShaderSource(shader, source);
+ checkGlError();
+
+ glCompileShader(shader);
+ checkGlError();
+
+ int[] status = new int[1];
+ glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0);
+ if (status[0] != GL_TRUE) {
+ String error = glGetShaderInfoLog(shader);
+ Log.d(LOG_TAG, "Error while compiling shader:\n" + error);
+ glDeleteShader(shader);
+ return 0;
+ }
+
+ return shader;
+ }
+
private void checkEglError() {
int error = mEgl.eglGetError();
if (error != EGL10.EGL_SUCCESS) {
@@ -152,8 +311,8 @@
}
private void checkGlError() {
- int error = GLES20.glGetError();
- if (error != GLES20.GL_NO_ERROR) {
+ int error = glGetError();
+ if (error != GL_NO_ERROR) {
Log.w(LOG_TAG, "GL error = 0x" + Integer.toHexString(error));
}
}