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

Introduction

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

Prototype

void glBlendFunc(int sfactor, int dfactor);

Source Link

Usage

From source file:eu.sathra.SathraActivity.java

@SuppressLint("WrongCall")
@Override//from ww w  .  j  a va2s  .  c o 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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