Example usage for org.lwjgl.opengl GL11 glPixelStorei

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glPixelStorei.

Prototype

public static void glPixelStorei(@NativeType("GLenum") int pname, @NativeType("GLint") int param)

Source Link

Document

Sets the integer value of a pixel store parameter.

Usage

From source file:zsawyer.mods.stereoscopic3d.DebugUtil.java

License:Open Source License

public static void printStencilMap() {
    try {/*w  ww  .  j  ava2  s. co m*/
        Minecraft mc = FMLClientHandler.instance().getClient();

        int stencilWidth = mc.displayWidth;
        int stencilHeight = mc.displayHeight;
        IntBuffer stencilMap = ByteBuffer.allocateDirect(stencilWidth * stencilHeight * 4).asIntBuffer();
        stencilMap.rewind();

        // stencilMap.order(ByteOrder.nativeOrder());
        GL11.glPixelStorei(GL11.GL_PACK_SWAP_BYTES, GL11.GL_TRUE);
        GL11.glReadPixels(0, 0, stencilWidth, stencilHeight, GL11.GL_STENCIL_INDEX, GL11.GL_INT, stencilMap);
        checkGLError();

        stencilMap.rewind();
        PrintWriter out = new PrintWriter("stencilMap.bitmap");
        int yPos = 0;
        while (stencilMap.hasRemaining()) {
            // int c = Math.abs(stencilMap.get()) % 10;
            int c = stencilMap.get();
            out.print((c & 1));
            if (yPos >= stencilWidth - 1) {
                out.println("");
                yPos = -1;
            }
            yPos++;
        }
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

From source file:zsawyer.mods.stereoscopic3d.renderers.StencilingRenderer.java

License:Open Source License

protected boolean isReinitRequired() {
    stencilMap.rewind();/*from   w w w.j  ava  2 s .  com*/

    GL11.glPixelStorei(GL11.GL_PACK_SWAP_BYTES, GL11.GL_TRUE);
    GL11.glReadPixels(0, 0, stencilTestWidth, stencilTestHeight, GL11.GL_STENCIL_INDEX, GL11.GL_INT,
            stencilMap);
    DebugUtil.checkGLError();

    return stencilMap.get(0) != 1;
}