/*
 * Copyright (c) 2002 Lightweight Java Game Library Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'Light Weight Java Game Library' nor the names of
 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * Created by LWJGL.
 * User: spasi
 * Date: 2003-11-28
 * Time: 16:32:30
 */

package org.lwjgl.opengl;

import java.nio.Buffer;
import java.nio.BufferOverflowException;
import java.nio.BufferUnderflowException;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;

class ARBProgram {

	/*
	* Accepted by the <format> parameter of ProgramStringARB:
	*/
	public final static int GL_PROGRAM_FORMAT_ASCII_ARB = 0x8875;

	/*
	* Accepted by the <pname> parameter of GetProgramivARB:
	*/
	public static final int GL_PROGRAM_LENGTH_ARB = 0x8627;
	public static final int GL_PROGRAM_FORMAT_ARB = 0x8876;
	public static final int GL_PROGRAM_BINDING_ARB = 0x8677;
	public static final int GL_PROGRAM_INSTRUCTIONS_ARB = 0x88A0;
	public static final int GL_MAX_PROGRAM_INSTRUCTIONS_ARB = 0x88A1;
	public static final int GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB = 0x88A2;
	public static final int GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB = 0x88A3;
	public static final int GL_PROGRAM_TEMPORARIES_ARB = 0x88A4;
	public static final int GL_MAX_PROGRAM_TEMPORARIES_ARB = 0x88A5;
	public static final int GL_PROGRAM_NATIVE_TEMPORARIES_ARB = 0x88A6;
	public static final int GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB = 0x88A7;
	public static final int GL_PROGRAM_PARAMETERS_ARB = 0x88A8;
	public static final int GL_MAX_PROGRAM_PARAMETERS_ARB = 0x88A9;
	public static final int GL_PROGRAM_NATIVE_PARAMETERS_ARB = 0x88AA;
	public static final int GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB = 0x88AB;
	public static final int GL_PROGRAM_ATTRIBS_ARB = 0x88AC;
	public static final int GL_MAX_PROGRAM_ATTRIBS_ARB = 0x88AD;
	public static final int GL_PROGRAM_NATIVE_ATTRIBS_ARB = 0x88AE;
	public static final int GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB = 0x88AF;
	public static final int GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB = 0x88B4;
	public static final int GL_MAX_PROGRAM_ENV_PARAMETERS_ARB = 0x88B5;
	public static final int GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB = 0x88B6;

	/*
	* Accepted by the <pname> parameter of GetProgramStringARB:
	*/
	public static final int GL_PROGRAM_STRING_ARB = 0x8628;

	/*
	* Accepted by the <pname> parameter of GetBooleanv, GetIntegerv,
	* GetFloatv, and GetDoublev:
	*/
	public static final int GL_PROGRAM_ERROR_POSITION_ARB = 0x864B;
	public static final int GL_CURRENT_MATRIX_ARB = 0x8641;
	public static final int GL_TRANSPOSE_CURRENT_MATRIX_ARB = 0x88B7;
	public static final int GL_CURRENT_MATRIX_STACK_DEPTH_ARB = 0x8640;
	public static final int GL_MAX_PROGRAM_MATRICES_ARB = 0x862F;
	public static final int GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB = 0x862E;

	/*
	* Accepted by the <name> parameter of GetString:
	*/
	public static final int GL_PROGRAM_ERROR_STRING_ARB = 0x8874;

	/*
	* Accepted by the <mode> parameter of MatrixMode:
	*/
	public static final int GL_MATRIX0_ARB = 0x88C0;
	public static final int GL_MATRIX1_ARB = 0x88C1;
	public static final int GL_MATRIX2_ARB = 0x88C2;
	public static final int GL_MATRIX3_ARB = 0x88C3;
	public static final int GL_MATRIX4_ARB = 0x88C4;
	public static final int GL_MATRIX5_ARB = 0x88C5;
	public static final int GL_MATRIX6_ARB = 0x88C6;
	public static final int GL_MATRIX7_ARB = 0x88C7;
	public static final int GL_MATRIX8_ARB = 0x88C8;
	public static final int GL_MATRIX9_ARB = 0x88C9;
	public static final int GL_MATRIX10_ARB = 0x88CA;
	public static final int GL_MATRIX11_ARB = 0x88CB;
	public static final int GL_MATRIX12_ARB = 0x88CC;
	public static final int GL_MATRIX13_ARB = 0x88CD;
	public static final int GL_MATRIX14_ARB = 0x88CE;
	public static final int GL_MATRIX15_ARB = 0x88CF;
	public static final int GL_MATRIX16_ARB = 0x88D0;
	public static final int GL_MATRIX17_ARB = 0x88D1;
	public static final int GL_MATRIX18_ARB = 0x88D2;
	public static final int GL_MATRIX19_ARB = 0x88D3;
	public static final int GL_MATRIX20_ARB = 0x88D4;
	public static final int GL_MATRIX21_ARB = 0x88D5;
	public static final int GL_MATRIX22_ARB = 0x88D6;
	public static final int GL_MATRIX23_ARB = 0x88D7;
	public static final int GL_MATRIX24_ARB = 0x88D8;
	public static final int GL_MATRIX25_ARB = 0x88D9;
	public static final int GL_MATRIX26_ARB = 0x88DA;
	public static final int GL_MATRIX27_ARB = 0x88DB;
	public static final int GL_MATRIX28_ARB = 0x88DC;
	public static final int GL_MATRIX29_ARB = 0x88DD;
	public static final int GL_MATRIX30_ARB = 0x88DE;
	public static final int GL_MATRIX31_ARB = 0x88DF;


	// ---------------------------
	public static void glProgramStringARB(int target, int format, ByteBuffer string) {
		nglProgramStringARB(target, format, string.remaining(), string, string.position());
	}

	private static native void nglProgramStringARB(int target, int format, int length, Buffer string, int stringOffset);
	// ---------------------------

	public static native void glBindProgramARB(int target, int program);

	// ---------------------------
	public static void glDeleteProgramsARB(IntBuffer programs) {
		nglDeleteProgramsARB(programs.remaining(), programs, programs.position());
	}

	private static native void nglDeleteProgramsARB(int n, IntBuffer programs, int programsOffset);
	// ---------------------------

	// ---------------------------
	public static void glGenProgramsARB(IntBuffer programs) {
		nglGenProgramsARB(programs.remaining(), programs, programs.position());
	}

	private static native void nglGenProgramsARB(int n, IntBuffer programs, int programsOffset);
	// ---------------------------

	public static native void glProgramEnvParameter4fARB(
	        int target,
	        int index,
	        float x,
	        float y,
	        float z,
	        float w);

	private static void checkProgramEnv(int index, Buffer buf) {
		if (index < 0) {
			throw new IllegalArgumentException("<index> must be greater than or equal to 0.");
		}
		if (buf.remaining() < 4) {
			throw new BufferUnderflowException();
		}
	}
	
	// ---------------------------
	public static void glProgramEnvParameterARB(int target, int index, FloatBuffer params) {
		checkProgramEnv(index, params);
		nglProgramEnvParameter4fvARB(target, index, params, params.position());
	}

	private static native void nglProgramEnvParameter4fvARB(int target, int index, FloatBuffer params, int paramsOffset);
	// ---------------------------

	public static native void glProgramLocalParameter4fARB(
	        int target,
	        int index,
	        float x,
	        float y,
	        float z,
	        float w);

	// ---------------------------
	public static void glProgramLocalParameterARB(int target, int index, FloatBuffer params) {
		checkProgramEnv(index, params);
		nglProgramLocalParameter4fvARB(target, index, params, params.position());
	}

	private static native void nglProgramLocalParameter4fvARB(int target, int index, FloatBuffer params, int paramsOffset);
	// ---------------------------

	// ---------------------------
	public static void glGetProgramEnvParameterARB(int target, int index, FloatBuffer params) {
		checkProgramEnv(index, params);
		nglGetProgramEnvParameterfvARB(target, index, params, params.position());
	}

	private static native void nglGetProgramEnvParameterfvARB(int target, int index, FloatBuffer params, int paramsOffset);
	// ---------------------------

	// ---------------------------
	public static void glGetProgramLocalParameterARB(int target, int index, FloatBuffer params) {
		checkProgramEnv(index, params);
		nglGetProgramLocalParameterfvARB(target, index, params, params.position());
	}

	private static native void nglGetProgramLocalParameterfvARB(int target, int index, FloatBuffer params, int paramsOffset);
	// ---------------------------

	// ---------------------------
	public static void glGetProgramARB(int target, int parameterName, IntBuffer params) {
		BufferChecks.checkBuffer(params);
		nglGetProgramivARB(target, parameterName, params, params.position());
	}

	private static native void nglGetProgramivARB(int target, int parameterName, IntBuffer params, int paramsOffset);
	// ---------------------------

	// ---------------------------
	public static void glGetProgramStringARB(int target, int parameterName, ByteBuffer paramString) {
		// TODO: We have no idea just how big programs can be really so let's guess at 16kb and hope that's
		// good enough. So we ought to find out how big a program can be.
		if (paramString.remaining() < 16384) {
			throw new BufferOverflowException();
		}
		nglGetProgramStringARB(target, parameterName, paramString, paramString.position());
	}

	private static native void nglGetProgramStringARB(int target, int parameterName, Buffer paramString, int paramStringOffset);
	// ---------------------------

	public static native boolean glIsProgramARB(int program);

}