Example usage for com.badlogic.gdx.graphics GL30 GL_READ_FRAMEBUFFER

Introduction

In this page you can find the example usage for com.badlogic.gdx.graphics GL30 GL_READ_FRAMEBUFFER.

Prototype

int GL_READ_FRAMEBUFFER

To view the source code for com.badlogic.gdx.graphics GL30 GL_READ_FRAMEBUFFER.

Click Source Link

Usage

From source file:de.fatox.meta.graphics.buffer.MultisampleFBO.java

License:Apache License

/** Convenience method to return the first Texture attachment present in the fbo **/
public Texture getColorBufferTexture() {
    if (nonMultisampledFbo == null) {
        // TODO fix
        return null;
    }// w  w  w .  ja va 2s  .  c  o  m
    Gdx.gl30.glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, framebufferHandle);
    Gdx.gl30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, nonMultisampledFbo.getFramebufferHandle());
    Gdx.gl30.glBlitFramebuffer(0, 0, getWidth(), getHeight(), 0, 0, getWidth(), getHeight(),
            GL30.GL_COLOR_BUFFER_BIT, GL30.GL_NEAREST);
    Gdx.gl30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, 0);
    Gdx.gl30.glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, 0);
    FrameBuffer.unbind();
    return nonMultisampledFbo.getColorBufferTexture();
}

---

From source file:de.fatox.meta.graphics.buffer.MultisampleFBO.java

License:Apache License

/** Return the Texture attachments attached to the fbo **/
public Array<Texture> getTextureAttachments() {
    checkError(Gdx.gl.glGetError());//from  www .  j  av a2s. c  om
    FrameBuffer.unbind();
    Gdx.gl30.glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, framebufferHandle);
    Gdx.gl30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, nonMultisampledFbo.getFramebufferHandle());
    IntBuffer intBuffer = BufferUtils.newIntBuffer(1);
    for (int i = 0; i < textureAttachments; i++) {
        if (i == textureAttachments - 1 && textureAttachments > 1) {
            Gdx.gl30.glReadBuffer(GL30.GL_NONE);
            intBuffer.put(GL30.GL_NONE);
            checkError(Gdx.gl.glGetError());
        } else {
            Gdx.gl30.glReadBuffer(GL30.GL_COLOR_ATTACHMENT0 + i);
            intBuffer.put(GL30.GL_COLOR_ATTACHMENT0 + i);
        }
        intBuffer.rewind();
        Gdx.gl30.glDrawBuffers(1, intBuffer);
        if (i == textureAttachments - 1 && textureAttachments > 1) {
            Gdx.gl30.glBlitFramebuffer(0, 0, getWidth(), getHeight(), 0, 0, getWidth(), getHeight(),
                    GL30.GL_DEPTH_BUFFER_BIT, GL30.GL_NEAREST);
        } else {
            Gdx.gl30.glBlitFramebuffer(0, 0, getWidth(), getHeight(), 0, 0, getWidth(), getHeight(),
                    GL30.GL_COLOR_BUFFER_BIT, GL30.GL_NEAREST);
        }
    }
    FrameBuffer.unbind();
    return nonMultisampledFbo.getTextureAttachments();
}

---