RNWebGLTextureView.java 文件源码

public void run() {
    Bitmap bitmap;
    try {
        bitmap = captureView(view);
    }
    catch (Exception e) {
        return;
    }
    if (yflip) {
        Matrix matrix = new Matrix();
        matrix.postScale(1, -1);
        boolean hasAlpha = bitmap.hasAlpha();
        bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        bitmap.setHasAlpha(hasAlpha);
    }
    int[] textures = new int[1];
    glGenTextures(1, textures, 0);
    glBindTexture(GL_TEXTURE_2D, textures[0]);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    GLUtils.texImage2D(GL_TEXTURE_2D, 0, bitmap, 0);
    this.attachTexture(textures[0]);
}