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A royalty-free, cross-platform API for full-function 2D and 3D graphics on embedded systems - including consoles, phones, appliances and vehicles.
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/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.opengles;

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 EXT_blend_func_extended extension.
 * 
 * This extension provides an ES version of the ARB_blend_func_extended functionality.
 * 
 * Traditional OpenGL includes fixed-function blending that combines source colors with the existing content of a render buffer in a variety of ways. A
 * number of extensions have enhanced this functionality by adding further sources of blending weights and methods to combine them. However, the inputs to
 * the fixed-function blending units are constrained to a source color (as output from fragment shading), destination color (as the current content of the
 * frame buffer) or constants that may be used in their place.
 * 
 * This extension adds new blending functions whereby a fragment shader may output two colors, one of which is treated as the source color, and the other
 * used as a blending factor for either source or destination colors. Furthermore, this extension increases orthogonality by allowing the
 * SRC_ALPHA_SATURATE function to be used as the destination weight.
 * 
 * Because of the limitations of the OpenGL ES 2.0 shading language, new built-in variables (gl_SecondaryFragColorEXT, gl_SecondaryFragDataEXT) are added
 * to the ES 1.00 shading language rather than introduce more complex features for user-defined fragment outputs. Because such built-in variable are
 * deprecated in ES 3.0, these variables are NOT available in the OpenGL ES 3.xx shading language verisons.
 */
public class EXTBlendFuncExtended {

    /**
     * Accepted by the {@code src} and {@code dst} parameters of BlendFunc and BlendFunciEXT, and by the {@code srcRGB}, {@code dstRGB}, {@code srcAlpha} and
     * {@code dstAlpha} parameters of BlendFuncSeparate and BlendFuncSeparateiEXT.
     */
    public static final int
        GL_SRC1_COLOR_EXT           = 0x88F9,
        GL_SRC1_ALPHA_EXT           = 0x8589,
        GL_ONE_MINUS_SRC1_COLOR_EXT = 0x88FA,
        GL_ONE_MINUS_SRC1_ALPHA_EXT = 0x88FB,
        GL_SRC_ALPHA_SATURATE_EXT   = 0x308;

    /** Accepted in the {@code props} array of GetProgramResourceiv. */
    public static final int GL_LOCATION_INDEX_EXT = 0x930F;

    /** Accepted by the {@code pname} parameter of GetBooleanv, GetIntegerv, and GetFloatv. */
    public static final int GL_MAX_DUAL_SOURCE_DRAW_BUFFERS_EXT = 0x88FC;

    static { GLES.initialize(); }

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

    static boolean isAvailable(GLESCapabilities caps) {
        return checkFunctions(
            caps.glBindFragDataLocationIndexedEXT, caps.glGetFragDataIndexEXT, caps.glBindFragDataLocationEXT, caps.glGetProgramResourceLocationIndexEXT
        );
    }

    // --- [ glBindFragDataLocationIndexedEXT ] ---

    public static native void nglBindFragDataLocationIndexedEXT(int program, int colorNumber, int index, long name);

    public static void glBindFragDataLocationIndexedEXT(int program, int colorNumber, int index, ByteBuffer name) {
        if (CHECKS) {
            checkNT1(name);
        }
        nglBindFragDataLocationIndexedEXT(program, colorNumber, index, memAddress(name));
    }

    public static void glBindFragDataLocationIndexedEXT(int program, int colorNumber, int index, CharSequence name) {
        MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
        try {
            ByteBuffer nameEncoded = stack.ASCII(name);
            nglBindFragDataLocationIndexedEXT(program, colorNumber, index, memAddress(nameEncoded));
        } finally {
            stack.setPointer(stackPointer);
        }
    }

    // --- [ glGetFragDataIndexEXT ] ---

    public static native int nglGetFragDataIndexEXT(int program, long name);

    public static int glGetFragDataIndexEXT(int program, ByteBuffer name) {
        if (CHECKS) {
            checkNT1(name);
        }
        return nglGetFragDataIndexEXT(program, memAddress(name));
    }

    public static int glGetFragDataIndexEXT(int program, CharSequence name) {
        MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
        try {
            ByteBuffer nameEncoded = stack.ASCII(name);
            return nglGetFragDataIndexEXT(program, memAddress(nameEncoded));
        } finally {
            stack.setPointer(stackPointer);
        }
    }

    // --- [ glBindFragDataLocationEXT ] ---

    public static native void nglBindFragDataLocationEXT(int program, int colorNumber, long name);

    public static void glBindFragDataLocationEXT(int program, int colorNumber, ByteBuffer name) {
        if (CHECKS) {
            checkNT1(name);
        }
        nglBindFragDataLocationEXT(program, colorNumber, memAddress(name));
    }

    public static void glBindFragDataLocationEXT(int program, int colorNumber, CharSequence name) {
        MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
        try {
            ByteBuffer nameEncoded = stack.ASCII(name);
            nglBindFragDataLocationEXT(program, colorNumber, memAddress(nameEncoded));
        } finally {
            stack.setPointer(stackPointer);
        }
    }

    // --- [ glGetProgramResourceLocationIndexEXT ] ---

    public static native int nglGetProgramResourceLocationIndexEXT(int program, int programInterface, long name);

    public static int glGetProgramResourceLocationIndexEXT(int program, int programInterface, ByteBuffer name) {
        if (CHECKS) {
            checkNT1(name);
        }
        return nglGetProgramResourceLocationIndexEXT(program, programInterface, memAddress(name));
    }

    public static int glGetProgramResourceLocationIndexEXT(int program, int programInterface, CharSequence name) {
        MemoryStack stack = stackGet(); int stackPointer = stack.getPointer();
        try {
            ByteBuffer nameEncoded = stack.ASCII(name);
            return nglGetProgramResourceLocationIndexEXT(program, programInterface, memAddress(nameEncoded));
        } finally {
            stack.setPointer(stackPointer);
        }
    }

}