org.lwjgl.opengl.EXTBlendColor 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 static org.lwjgl.system.Checks.*;

/**
 * Native bindings to the EXT_blend_color extension.
 * 
 * Blending capability is extended by defining a constant color that can be included in blending equations. A typical usage is blending two RGB images.
 * Without the constant blend factor, one image must have an alpha channel with each pixel set to the desired blend factor.
 * 
 * Promoted to core in {@link GL14 OpenGL 1.4}.
 */
public class EXTBlendColor {

    /** Accepted by the {@code sfactor} and {@code dfactor} parameters of BlendFunc. */
    public static final int
        GL_CONSTANT_COLOR_EXT           = 0x8001,
        GL_ONE_MINUS_CONSTANT_COLOR_EXT = 0x8002,
        GL_CONSTANT_ALPHA_EXT           = 0x8003,
        GL_ONE_MINUS_CONSTANT_ALPHA_EXT = 0x8004;

    /** Accepted by the {@code pname} parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev. */
    public static final int GL_BLEND_COLOR_EXT = 0x8005;

    static { GL.initialize(); }

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

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

    // --- [ glBlendColorEXT ] ---

    public static native void glBlendColorEXT(float red, float green, float blue, float alpha);

}