org.lwjgl.opengl.GREMEDYStringMarker Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of lwjgl-opengl Show documentation
The most widely adopted 2D and 3D graphics API in the industry, bringing thousands of applications to a wide variety of computer platforms.
There is a newer version: 3.3.5
Show newest version
/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengl;

import java.nio.*;

import org.lwjgl.system.*;

import static org.lwjgl.system.Checks.*;
import static org.lwjgl.system.MemoryStack.*;
import static org.lwjgl.system.MemoryUtil.*;

/**
 * Native bindings to the GREMEDY_string_marker extension.
 * 
 * This extension defines a mechanism to insert textual markers into the OpenGL stream.
 * 
 * When debugging or profiling an OpenGL application some of the most important tools are stream loggers, which just output a list of the called OpenGL
 * commands, and profilers, which show at which points the pipeline is bottlenecked for a given part of the frame. The problem in using these is that
 * there is a definite loss of information between the application and the used debugger/profiler. The application generally has a pretty good idea what
 * is rendered when (e.g. rendering background, landscape, building, players, particle effects, bullets etc.), but the debugger/profiler only sees the
 * OpenGL stream. To analyze the stream developers have to guess what is done when by following the program code and the log output in parallel, which can
 * get difficult for systems that restructure their internal pipeline or do lazy changes.
 * 
 * This extension is really only useful for these debuggers and profilers, and not for actual drivers. In fact, it is not expected that any standard
 * driver would ever implement this extension. The main point of having this extension is to allow applications to have a clean way of accessing this
 * functionality only when they are run under the control of a debugger/profiler, without having to recompile or change the application source code.
 */
public class GREMEDYStringMarker {

    static { GL.initialize(); }

    protected GREMEDYStringMarker() {
        throw new UnsupportedOperationException();
    }

    static boolean isAvailable(GLCapabilities caps) {
        return checkFunctions(
            caps.glStringMarkerGREMEDY
        );
    }

    // --- [ glStringMarkerGREMEDY ] ---

    /**
     * Unsafe version of: {@link #glStringMarkerGREMEDY StringMarkerGREMEDY}
     *
     * @param len the length of the array. If {@code string} is null-terminated, {@code len} should not include the terminator. If {@code len} is 0, then the string
     *            is assumed to be null-terminated.
     */
    public static native void nglStringMarkerGREMEDY(int len, long string);

    /**
     * Can be used to insert arbitrary marker strings into the command stream that can be recorded by appropriate debugging tools / profiling tools / drivers.
     * They have no influence on the rendered image or the OpenGL state.
     *
     * @param string a pointer to the array of bytes representing the marker being inserted, which need not be null-terminated
     */
    public static void glStringMarkerGREMEDY(@NativeType("const GLchar *") ByteBuffer string) {
        nglStringMarkerGREMEDY(string.remaining(), memAddress(string));
    }

    /**
     * Can be used to insert arbitrary marker strings into the command stream that can be recorded by appropriate debugging tools / profiling tools / drivers.
     * They have no influence on the rendered image or the OpenGL state.
     *
     * @param string a pointer to the array of bytes representing the marker being inserted, which need not be null-terminated
     */
    public static void glStringMarkerGREMEDY(@NativeType("const GLchar *") CharSequence string) {
        MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
        try {
            ByteBuffer stringEncoded = stack.UTF8(string, false);
            nglStringMarkerGREMEDY(stringEncoded.remaining(), memAddress(stringEncoded));
        } finally {
            stack.setPointer(stackPointer);
        }
    }

}