Examples with Kernel java.awt.image.Kernel used on opensource projects

Example 6 with Kernel

use of java.awt.image.Kernel in project jdk8u_jdk by JetBrains.

the class BufferedBufImgOps method isConvolveOpValid.

/**************************** ConvolveOp support ****************************/
public static boolean isConvolveOpValid(ConvolveOp cop) {
    Kernel kernel = cop.getKernel();
    int kw = kernel.getWidth();
    int kh = kernel.getHeight();
    //         see native shader comments for more details
    if (!(kw == 3 && kh == 3) && !(kw == 5 && kh == 5)) {
        return false;
    }
    return true;
}

Example 7 with Kernel

use of java.awt.image.Kernel in project libgdx by libgdx.

the class ShadowEffect method blur.

private void blur(BufferedImage image) {
    float[] matrix = GAUSSIAN_BLUR_KERNELS[blurKernelSize - 1];
    Kernel gaussianBlur1 = new Kernel(matrix.length, 1, matrix);
    Kernel gaussianBlur2 = new Kernel(1, matrix.length, matrix);
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
    ConvolveOp gaussianOp1 = new ConvolveOp(gaussianBlur1, ConvolveOp.EDGE_NO_OP, hints);
    ConvolveOp gaussianOp2 = new ConvolveOp(gaussianBlur2, ConvolveOp.EDGE_NO_OP, hints);
    BufferedImage scratchImage = EffectUtil.getScratchImage();
    for (int i = 0; i < blurPasses; i++) {
        gaussianOp1.filter(image, scratchImage);
        gaussianOp2.filter(scratchImage, image);
    }
}

Example 8 with Kernel

use of java.awt.image.Kernel in project jdk8u_jdk by JetBrains.

the class BufferedBufImgOps method enableConvolveOp.

private static void enableConvolveOp(RenderQueue rq, SurfaceData srcData, ConvolveOp cop) {
    // assert rq.lock.isHeldByCurrentThread();
    boolean edgeZero = cop.getEdgeCondition() == ConvolveOp.EDGE_ZERO_FILL;
    Kernel kernel = cop.getKernel();
    int kernelWidth = kernel.getWidth();
    int kernelHeight = kernel.getHeight();
    int kernelSize = kernelWidth * kernelHeight;
    int sizeofFloat = 4;
    int totalBytesRequired = 4 + 8 + 12 + (kernelSize * sizeofFloat);
    RenderBuffer buf = rq.getBuffer();
    rq.ensureCapacityAndAlignment(totalBytesRequired, 4);
    buf.putInt(ENABLE_CONVOLVE_OP);
    buf.putLong(srcData.getNativeOps());
    buf.putInt(edgeZero ? 1 : 0);
    buf.putInt(kernelWidth);
    buf.putInt(kernelHeight);
    buf.put(kernel.getKernelData(null));
}

Example 9 with Kernel

use of java.awt.image.Kernel in project jdk8u_jdk by JetBrains.

the class MlibOpsTest method getConvolveOp.

private static BufferedImageOp getConvolveOp() {
    int kw = 3;
    int kh = 3;
    int size = kw * kh;
    float[] kdata = new float[size];
    Arrays.fill(kdata, 1.0f / size);
    Kernel k = new Kernel(kw, kh, kdata);
    return new ConvolveOp(k);
}