vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_BETTER);
vgSeti(VG_IMAGE_QUALITY, VG_IMAGE_QUALITY_BETTER);
vgSeti(VG_SCISSORING, VG_FALSE);
vgSeti(VG_MASKING, VG_TRUE);

// create a path
path0 = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
vguRect(path0, 10.0f, 10.0f, 236.0f, 236.0f);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
vgLoadIdentity();

// create and set a paint for fill
fillPaint = vgCreatePaint();
vgSetParameteri(fillPaint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);

col[0] = 0.5f; col[1] = 0.5f; col[2] = 1.0f; col[3] = 1.0f;
vgSetParameterfv(fillPaint, VG_PAINT_COLOR, 4, col);
vgSetPaint(fillPaint, VG_FILL_PATH);

// set clear color
col[0] = 1.0f; col[1] = 1.0f; col[2] = 1.0f; col[3] = 1.0f;
vgSetfv(VG_CLEAR_COLOR, 4, col);

#if defined(OPENVG_VERSION_1_1)
for (j = VG_sRGBX_8888; j <= VG_A_4; ++j) {
#else
for (j = VG_sRGBX_8888; j <= VG_BW_1; ++j) {
#endif

	char filePrefix[128];
	char descPostfix[128];

	// create image and load external data
	imgSrc = vgCreateImage((VGImageFormat)j, imgBarbaraAlphaWidth, imgBarbaraAlphaHeight, VG_IMAGE_QUALITY_NONANTIALIASED);
	vgImageSubData(imgSrc, (const void *)&imgBarbaraAlphaData[imgBarbaraAlphaWidth * (imgBarbaraAlphaHeight - 1)], -imgBarbaraAlphaDataStride, imgBarbaraAlphaFormat, 0, 0, imgBarbaraAlphaWidth, imgBarbaraAlphaHeight);
	imgTmp = vgCreateImage((VGImageFormat)j, imgBarbaraAlphaWidth, imgBarbaraAlphaHeight, VG_IMAGE_QUALITY_NONANTIALIASED);
	vgImageSubData(imgTmp, (const void *)imgBarbaraAlphaData, imgBarbaraAlphaDataStride, imgBarbaraAlphaFormat, 0, 0, imgBarbaraAlphaWidth, imgBarbaraAlphaHeight);

	strcpy(filePrefix, "vgmasking_");
	strcat(filePrefix, imageFormatToString((VGImageFormat)j));
	strcpy(descPostfix, " using a ");
	strcat(descPostfix, imageFormatToString((VGImageFormat)j));
	strcat(descPostfix, " image.");

	// test CLEAR operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(VG_INVALID_HANDLE, VG_CLEAR_MASK, -128, -128, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_clear.png");
	strcpy(testDesc, "vgMask CLEAR operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);
	// test FILL operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(VG_INVALID_HANDLE, VG_FILL_MASK, 128, 128, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_fill.png");
	strcpy(testDesc, "vgMask FILL operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);
	// test SET operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(imgTmp, VG_SET_MASK, -128, 0, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_set.png");
	strcpy(testDesc, "vgMask SET operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);
	// test UNION operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(imgTmp, VG_UNION_MASK, 0, 0, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_union.png");
	strcpy(testDesc, "vgMask UNION operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);
	// test INTERSECT operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(imgTmp, VG_INTERSECT_MASK, 0, 0, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_intersect.png");
	strcpy(testDesc, "vgMask INTERSECT operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);
	// test SUBTRACT operation
	vgClear(0, 0, 256, 256);
	vgMask(imgSrc, VG_SET_MASK, 0, 0, 256, 256);
	vgMask(imgTmp, VG_SUBTRACT_MASK, 0, 0, 256, 256);
	vgDrawPath(path0, VG_FILL_PATH);
	strcpy(imgFileName, filePrefix);
	strcat(imgFileName, "_subtract.png");
	strcpy(testDesc, "vgMask SUBTRACT operation");
	strcat(testDesc, descPostfix);
	saveDrawingSurface(f, imgFileName, testDesc, 0, 0, 256, 256);
	eglSwapBuffers(display, surface);

	vgDestroyImage(imgSrc);
	vgDestroyImage(imgTmp);
}

vgDestroyPath(path0);
vgDestroyPaint(fillPaint);