/*
* 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.
*/

// ----------------------------------
// IMPLEMENTATION OF NATIVE METHODS FOR CLASS: org.lwjgl.opengl.ARBVertexShader
// ----------------------------------

#include "extgl.h"
#include "checkGLerror.h"

typedef unsigned char GLcharARB;
typedef unsigned int GLhandleARB;

typedef void (APIENTRY * glBindAttribLocationARBPROC) (GLhandleARB programObj, GLuint index, const GLcharARB *name);
typedef void (APIENTRY * glGetActiveAttribARBPROC) (GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei *length, GLint *size, GLenum *type, GLcharARB *name);
typedef GLint (APIENTRY * glGetAttribLocationARBPROC) (GLhandleARB programObj, const GLcharARB *name);

static glBindAttribLocationARBPROC glBindAttribLocationARB;
static glGetActiveAttribARBPROC glGetActiveAttribARB;
static glGetAttribLocationARBPROC glGetAttribLocationARB;

/*
 * Class:	org.lwjgl.opengl.ARBVertexShader
 * Method:	nglBindAttribLocationARB
 */
static void JNICALL Java_org_lwjgl_opengl_ARBVertexShader_nglBindAttribLocationARB
	(JNIEnv * env, jclass clazz, jint programObj, jint index, jobject name, jint nameOffset)
{
	GLubyte *name_ptr = (GLubyte *)env->GetDirectBufferAddress(name) + nameOffset;
	glBindAttribLocationARB(programObj, index, name_ptr);
	CHECK_GL_ERROR
}

/*
 * Class:	org.lwjgl.opengl.ARBVertexShader
 * Method:	nglGetActiveAttribARB
 */
static void JNICALL Java_org_lwjgl_opengl_ARBVertexShader_nglGetActiveAttribARB
	(JNIEnv * env, jclass clazz, jint programObj, jint index, jint maxLength, jobject length, jint lengthOffset, jobject size, jint sizeOffset, jobject type, jint typeOffset, jobject name, jint nameOffset)
{

	GLint *size_ptr = (GLint *)env->GetDirectBufferAddress(size) + sizeOffset;
	GLenum *type_ptr = (GLenum *)env->GetDirectBufferAddress(type) + typeOffset;
	GLcharARB *name_ptr = (GLcharARB *)env->GetDirectBufferAddress(name) + nameOffset;

	if ( length == NULL ) {
		glGetActiveAttribARB(programObj, index, maxLength, NULL, size_ptr, type_ptr, name_ptr);
	} else {
		GLsizei *length_ptr = (GLsizei *)env->GetDirectBufferAddress(length) + lengthOffset;
		glGetActiveAttribARB(programObj, index, maxLength, length_ptr, size_ptr, type_ptr, name_ptr);
	}

	CHECK_GL_ERROR
}

/*
 * Class:	org.lwjgl.opengl.ARBVertexShader
 * Method:	nglGetAttribLocationARB
 */
static jint JNICALL Java_org_lwjgl_opengl_ARBVertexShader_nglGetAttribLocationARB
	(JNIEnv * env, jclass clazz, jint programObj, jobject name, jint nameOffset)
{
	GLubyte *name_ptr = (GLubyte *)env->GetDirectBufferAddress(name) + nameOffset;
	GLuint result = glGetAttribLocationARB(programObj, name_ptr);
	CHECK_GL_ERROR
	return result;
}

void extgl_InitARBVertexShader(JNIEnv *env, jobject ext_set)
{
	JavaMethodAndGLFunction functions[] = {
		{"nglBindAttribLocationARB", "(IILjava/nio/ByteBuffer;I)V", (void*)&Java_org_lwjgl_opengl_ARBVertexShader_nglBindAttribLocationARB, "glBindAttribLocationARB", (void**)&glBindAttribLocationARB},
		{"nglGetActiveAttribARB", "(IIILjava/nio/IntBuffer;ILjava/nio/IntBuffer;ILjava/nio/IntBuffer;ILjava/nio/ByteBuffer;I)V", (void*)&Java_org_lwjgl_opengl_ARBVertexShader_nglGetActiveAttribARB, "glGetActiveAttribARB", (void**)&glGetActiveAttribARB},
		{"nglGetAttribLocationARB", "(ILjava/nio/ByteBuffer;I)I", (void*)&Java_org_lwjgl_opengl_ARBVertexShader_nglGetAttribLocationARB, "glGetAttribLocationARB", (void**)&glGetAttribLocationARB}
	};
	int num_functions = NUMFUNCTIONS(functions);
	jclass clazz = extgl_ResetClass(env, "org/lwjgl/opengl/ARBVertexShader");
	if (extgl_Extensions.GL_ARB_vertex_shader)
		extgl_InitializeClass(env, clazz, ext_set, "GL_ARB_vertex_shader", num_functions, functions);
}