Example usage for org.lwjgl.opengl GL30 GL_FRAMEBUFFER_COMPLETE

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL30 GL_FRAMEBUFFER_COMPLETE.

Prototype

int GL_FRAMEBUFFER_COMPLETE

To view the source code for org.lwjgl.opengl GL30 GL_FRAMEBUFFER_COMPLETE.

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Document

Returned by CheckFramebufferStatus().

Usage

From source file:se.angergard.engine.graphics.FrameBuffer.java

License:Apache License

public FrameBuffer(int width, int height, boolean hasDepth, boolean hasStencil) {
    this.width = width;
    this.height = height;

    if ((width + height) % 4 != 0.0) {
        new Exception("Width + Height must be divisible by 4");
    }//from w  w w  .  jav  a  2 s. co m

    frameBufferID = GL30.glGenFramebuffers();
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, frameBufferID);

    if (hasDepth && hasStencil) {
        depthAndStencilBufferID = GL30.glGenRenderbuffers();
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthAndStencilBufferID);
        GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL30.GL_DEPTH24_STENCIL8, width, height);
        GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_STENCIL_ATTACHMENT,
                GL30.GL_RENDERBUFFER, depthAndStencilBufferID);
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, 0);
    }

    else if (hasDepth) {
        depthBufferID = GL30.glGenRenderbuffers();
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthBufferID);
        GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL30.GL_DEPTH_COMPONENT32F, width, height);
        GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER,
                depthBufferID);
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, 0);
    }

    else if (hasStencil) {
        stencilBufferID = GL30.glGenRenderbuffers();
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, stencilBufferID);
        GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL30.GL_STENCIL_INDEX16, width, height);
        GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_STENCIL_ATTACHMENT, GL30.GL_RENDERBUFFER,
                stencilBufferID);
        GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, 0);
    }

    colorTexture = GL11.glGenTextures();
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, colorTexture);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);

    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, width, height, 0, GL11.GL_RGBA,
            GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);

    GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL11.GL_TEXTURE_2D,
            colorTexture, 0);

    int result = GL30.glCheckFramebufferStatus(GL30.GL_FRAMEBUFFER);
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
    if (result != GL30.GL_FRAMEBUFFER_COMPLETE) {
        if (result == GL30.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT) {
            new Exception("Frame Buffer Error: incomplete attachment").printStackTrace();
        }
        if (result == GL30.GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER) {
            new Exception("Frame Buffer Error: incomplete draw buffer").printStackTrace();
        }
        if (result == GL30.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT) {
            new Exception("Frame Buffer Error: missing attachment").printStackTrace();
        }
        if (result == GL30.GL_FRAMEBUFFER_UNSUPPORTED) {
            new Exception("Frame Buffer Error: unsupported combination of formats").printStackTrace();
        }
        if (result == GL30.GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE) {
            new Exception("Frame Buffer Error: incomplete multisample").printStackTrace();
        }
        if (result == GL30.GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER) {
            new Exception("Frame Buffer Error: incomplete read buffer").printStackTrace();
        }

        new Exception("frame buffer couldn't be constructed: unknown error " + result).printStackTrace();
    }
    RenderUtil.unbindFrameBuffer();
    RenderUtil.unbindTexture();

    frameBufferShader = new ShaderProgram().createDefault2DShader();
}

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