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

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

/**
 * Native bindings to the EXT_draw_instanced extension.
 * 
 * This extension provides the means to render multiple instances of an object with a single draw call, and an "instance ID" variable which can be used by
 * the vertex program to compute per-instance values, typically an object's transform.
 * 
 * Requires {@link GL20 OpenGL 2.0}.
 */
public class EXTDrawInstanced {

    static { GL.initialize(); }

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

    static boolean isAvailable(GLCapabilities caps) {
        return checkFunctions(
            caps.glDrawArraysInstancedEXT, caps.glDrawElementsInstancedEXT
        );
    }

    // --- [ glDrawArraysInstancedEXT ] ---

    public static native void glDrawArraysInstancedEXT(int mode, int start, int count, int primcount);

    // --- [ glDrawElementsInstancedEXT ] ---

    public static native void nglDrawElementsInstancedEXT(int mode, int count, int type, long indices, int primcount);

    public static void glDrawElementsInstancedEXT(int mode, int count, int type, long indices, int primcount) {
        nglDrawElementsInstancedEXT(mode, count, type, indices, primcount);
    }

    public static void glDrawElementsInstancedEXT(int mode, int type, ByteBuffer indices, int primcount) {
        nglDrawElementsInstancedEXT(mode, indices.remaining() >> GLChecks.typeToByteShift(type), type, memAddress(indices), primcount);
    }

    public static void glDrawElementsInstancedEXT(int mode, ByteBuffer indices, int primcount) {
        nglDrawElementsInstancedEXT(mode, indices.remaining(), GL11.GL_UNSIGNED_BYTE, memAddress(indices), primcount);
    }

    public static void glDrawElementsInstancedEXT(int mode, ShortBuffer indices, int primcount) {
        nglDrawElementsInstancedEXT(mode, indices.remaining(), GL11.GL_UNSIGNED_SHORT, memAddress(indices), primcount);
    }

    public static void glDrawElementsInstancedEXT(int mode, IntBuffer indices, int primcount) {
        nglDrawElementsInstancedEXT(mode, indices.remaining(), GL11.GL_UNSIGNED_INT, memAddress(indices), primcount);
    }

}