Examples with HasArrayBufferView java.nio.HasArrayBufferView used on opensource projects

Example 1 with HasArrayBufferView

use of java.nio.HasArrayBufferView in project libgdx by libgdx.

the class GwtGL20 method glReadPixels.

@Override
public void glReadPixels(int x, int y, int width, int height, int format, int type, Buffer pixels) {
    // verify request
    if ((format != WebGLRenderingContext.RGBA) || (type != WebGLRenderingContext.UNSIGNED_BYTE)) {
        throw new GdxRuntimeException("Only format RGBA and type UNSIGNED_BYTE are currently supported for glReadPixels(...). Create an issue when you need other formats.");
    }
    if (!(pixels instanceof ByteBuffer)) {
        throw new GdxRuntimeException("Inputed pixels buffer needs to be of type ByteBuffer for glReadPixels(...).");
    }
    // create new ArrayBufferView (4 bytes per pixel)
    int size = 4 * width * height;
    Uint8Array buffer = TypedArrays.createUint8Array(((HasArrayBufferView) pixels).getTypedArray().buffer(), 0, size);
    // read bytes to ArrayBufferView
    gl.readPixels(x, y, width, height, format, type, buffer);
}

Example 2 with HasArrayBufferView

use of java.nio.HasArrayBufferView in project libgdx by libgdx.

the class GwtGL20 method glTexImage2D.

@Override
public void glTexImage2D(int target, int level, int internalformat, int width, int height, int border, int format, int type, Buffer pixels) {
    if (pixels == null) {
        gl.texImage2D(target, level, internalformat, width, height, border, format, type, null);
    } else {
        if (pixels.limit() > 1) {
            HasArrayBufferView arrayHolder = (HasArrayBufferView) pixels;
            ArrayBufferView webGLArray = arrayHolder.getTypedArray();
            ArrayBufferView buffer;
            if (pixels instanceof FloatBuffer) {
                buffer = webGLArray;
            } else {
                int remainingBytes = pixels.remaining() * 4;
                int byteOffset = webGLArray.byteOffset() + pixels.position() * 4;
                buffer = Uint8ArrayNative.create(webGLArray.buffer(), byteOffset, remainingBytes);
            }
            gl.texImage2D(target, level, internalformat, width, height, border, format, type, buffer);
        } else {
            Pixmap pixmap = Pixmap.pixmaps.get(((IntBuffer) pixels).get(0));
            // Prefer to use the HTMLImageElement when possible, since reading from the CanvasElement can be lossy.
            if (pixmap.canUseImageElement()) {
                gl.texImage2D(target, level, internalformat, format, type, pixmap.getImageElement());
            } else {
                gl.texImage2D(target, level, internalformat, format, type, pixmap.getCanvasElement());
            }
        }
    }
}

Example 3 with HasArrayBufferView

use of java.nio.HasArrayBufferView in project libgdx by libgdx.

the class GwtGL20 method glTexSubImage2D.

@Override
public void glTexSubImage2D(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, Buffer pixels) {
    if (pixels.limit() > 1) {
        HasArrayBufferView arrayHolder = (HasArrayBufferView) pixels;
        ArrayBufferView webGLArray = arrayHolder.getTypedArray();
        ArrayBufferView buffer;
        if (pixels instanceof FloatBuffer) {
            buffer = webGLArray;
        } else {
            int remainingBytes = pixels.remaining() * 4;
            int byteOffset = webGLArray.byteOffset() + pixels.position() * 4;
            buffer = Uint8ArrayNative.create(webGLArray.buffer(), byteOffset, remainingBytes);
        }
        gl.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, buffer);
    } else {
        Pixmap pixmap = Pixmap.pixmaps.get(((IntBuffer) pixels).get(0));
        gl.texSubImage2D(target, level, xoffset, yoffset, format, type, pixmap.getCanvasElement());
    }
}