Example usage for org.lwjgl.opengl EXTFramebufferBlit GL_READ_FRAMEBUFFER

Introduction

In this page you can find the example usage for org.lwjgl.opengl EXTFramebufferBlit GL_READ_FRAMEBUFFER_EXT.

Prototype

int GL_READ_FRAMEBUFFER_EXT

To view the source code for org.lwjgl.opengl EXTFramebufferBlit GL_READ_FRAMEBUFFER_EXT.

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Document

Accepted by the target parameter of BindFramebufferEXT, CheckFramebufferStatusEXT, FramebufferTexture{1D|2D|3D}EXT, FramebufferRenderbufferEXT, and GetFramebufferAttachmentParameterivEXT.

Usage

From source file:com.ardor3d.framework.lwjgl.LwjglHeadlessCanvas.java

License:Open Source License

public void draw() {
    // bind correct fbo
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT,
            _useMSAA ? _msfboID : _fboID);

    // Make sure this OpenGL context is current.
    ContextManager.switchContext(this);
    try {/* www .j  a  va 2s . c  o  m*/
        _buff.makeCurrent();
    } catch (final LWJGLException ex) {
        ex.printStackTrace();
    }

    // make sure camera is set
    if (Camera.getCurrentCamera() != _camera) {
        _camera.update();
    }
    _camera.apply(_renderer);

    // clear buffers
    GL11.glDisable(GL11.GL_SCISSOR_TEST);
    _renderer.clearBuffers(Renderer.BUFFER_COLOR | Renderer.BUFFER_DEPTH);

    // draw our scene
    _scene.renderUnto(_renderer);
    _renderer.flushFrame(false);

    // if we're multisampled, we need to blit to a non-multisampled fbo first
    if (_useMSAA) {
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_DRAW_FRAMEBUFFER_EXT, _fboID);
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_READ_FRAMEBUFFER_EXT, _msfboID);
        EXTFramebufferBlit.glBlitFramebufferEXT(0, 0, _settings.getWidth(), _settings.getHeight(), 0, 0,
                _settings.getWidth(), _settings.getHeight(),
                GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT | GL11.GL_STENCIL_BUFFER_BIT,
                GL11.GL_NEAREST);

        // get ready to read non-msaa fbo
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, _fboID);
    }

    // read data from our color buffer
    _data.rewind();
    GL11.glReadBuffer(EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT);
    GL11.glReadPixels(0, 0, _settings.getWidth(), _settings.getHeight(), GL12.GL_BGRA, GL11.GL_UNSIGNED_BYTE,
            _data);

    // release our FBO.
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
}

From source file:com.ardor3d.renderer.lwjgl.LwjglTextureRenderer.java

License:Open Source License

@Override
protected void blitMSFBO() {
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_READ_FRAMEBUFFER_EXT, _msfboID);
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_DRAW_FRAMEBUFFER_EXT, _fboID);
    EXTFramebufferBlit.glBlitFramebufferEXT(0, 0, _width, _height, 0, 0, _width, _height,
            GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT, GL11.GL_NEAREST);

    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_READ_FRAMEBUFFER_EXT, 0);
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferBlit.GL_DRAW_FRAMEBUFFER_EXT, 0);
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
}

Example usage for org.lwjgl.opengl EXTFramebufferBlit GL_READ_FRAMEBUFFER_EXT

Introduction

Prototype

Document

Usage