Example usage for javax.microedition.khronos.opengles GL10 glViewport

Introduction

In this page you can find the example usage for javax.microedition.khronos.opengles GL10 glViewport.

Prototype

void glViewport(int x, int y, int width, int height);

Source Link

Usage

From source file:eu.sathra.SathraActivity.java

@SuppressLint("WrongCall")
@Override//from   w  w w  .j a  va 2  s  .  co m
public void onDrawFrame(GL10 gl) {
    gl.glViewport(0, 0, this.getScreenWidth(), this.getScreenHeight());
    // Update time variables
    mTimeDelta = System.currentTimeMillis() - mLastDrawTimestamp;
    mLastDrawTimestamp = System.currentTimeMillis();
    mTime += mTimeDelta;
    mVirtualTimeDelta = (long) (mTimeDelta * getTimeScale());
    mVirtualTime += mVirtualTimeDelta;

    // Setup defaults
    gl.glBindTexture(GL10.GL_TEXTURE_2D, 0);
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);

    // Clear BG
    float r = (float) Color.red(mParams.bgColor) / 255;
    float g = (float) Color.green(mParams.bgColor) / 255;
    float b = (float) Color.blue(mParams.bgColor) / 255;
    float a = (float) Color.alpha(mParams.bgColor) / 255;
    gl.glClearColor(r, g, b, a);
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);

    gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glBlendEquation(GLES20.GL_FUNC_ADD);

    gl.glMatrixMode(GL10.GL_TEXTURE);
    gl.glLoadIdentity();

    gl.glMatrixMode(GL10.GL_MODELVIEW);
    gl.glLoadIdentity();

    // gl.glEnable(GL10.GL_BLEND);
    gl.glBlendFunc(GL10.GL_ONE, GL10.GL_ONE_MINUS_SRC_ALPHA);

    mRootNode.onDraw(gl, mVirtualTime, mVirtualTimeDelta);

    // Draw lights and shadows
    gl.glMatrixMode(GL10.GL_TEXTURE);
    gl.glLoadIdentity();
    gl.glScalef(1, -1, 1); // Frame Buffers are upside down
    gl.glMatrixMode(GL10.GL_MODELVIEW);

    CameraNode activeCam = CameraNode.getActiveCamera();

    if (activeCam != null) {
        shad.setPosition(0, 0);// this.getResolutionWidth()/2,
        // this.getResolutionHeight()/2);//activeCam.getAbsoluteX(),
        // activeCam.getAbsoluteY());
    }

    gl.glBlendFunc(GL10.GL_DST_COLOR, GL10.GL_ONE_MINUS_SRC_ALPHA);

    shad.draw(gl);

    gl.glViewport(0, 0, this.getResolutionWidth(), this.getResolutionHeight()); // SDfDSFSDFS
    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, buf[0]);
    GLES20.glFramebufferTexture2D(GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D,
            tex[0], 0);

    // Clear shadow
    r = (float) Color.red(mParams.ambientColor) / 255;
    g = (float) Color.green(mParams.ambientColor) / 255;
    b = (float) Color.blue(mParams.ambientColor) / 255;
    a = (float) Color.alpha(mParams.ambientColor) / 255;

    gl.glClearColor(r, g, b, a);
    GLES20.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);

    // TODO: CONCURENT MOD EXCEPTION
    try {
        Dyn4jPhysics.getInstance().getWorld().updatev(mVirtualTimeDelta * MILISECONDS_TO_SECONDS);
    } catch (ConcurrentModificationException e) {

    }

    // if (mIsRunning)
    onUpdate(mVirtualTime, mVirtualTimeDelta);

    // Update fps counter
    mFPS = 1000f / mTimeDelta;

    // mDebugView.postInvalidate();

    // System.gc();
}

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From source file:eu.sathra.SathraActivity.java

@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
    if (mParams.width == 0 && mParams.height == 0) {
        mParams.width = width;// w w  w  . j  a  v a 2 s  .  c o m
        mParams.height = height;
    } else if (mParams.width == 0) {
        float screenRatio = width / (float) height;
        mParams.width = (int) (mParams.height * screenRatio);
    } else if (mParams.height == 0) {
        float screenRatio = height / (float) width;
        mParams.height = (int) (mParams.width * screenRatio);
    }

    gl.glViewport(0, 0, width, height);// mParams.width, mParams.height);

    Log.debug(String.format(SURFACE_CREATE_MSG_FORMAT, width, height, mParams.width, mParams.height));

    if (!mWasInitiated) {
        GLES20.glGenFramebuffers(1, buf, 0);
        GLES20.glGenTextures(1, tex, 0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex[0]);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
        IntBuffer tmp = ByteBuffer.allocateDirect(mParams.width * mParams.height * 4)
                .order(ByteOrder.nativeOrder()).asIntBuffer();
        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, mParams.width, mParams.height, 0,
                GLES20.GL_RGBA, GLES20.GL_UNSIGNED_SHORT_4_4_4_4, tmp);

        shad = new Sprite(new Texture(tex[0], mParams.width, mParams.height));
        shad.setPivot(0.5f, 0.5f);

        onEngineInitiated();

        mWasInitiated = true;
    }
}

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