Example usage for com.google.gwt.corp.webgl.client WebGLIntArray create

Introduction

In this page you can find the example usage for com.google.gwt.corp.webgl.client WebGLIntArray create.

Prototype

public static final native WebGLIntArray create(WebGLArrayBuffer buffer, int byteOffset, int length) ;

Source Link

Document

Create a new canvas array object using the passed WebGLArrayBuffer for its storage.

Usage

From source file:jake2.gwt.client.WebGLAdapter.java

License:Open Source License

private WebGLArray<?> getWebGLArray(Buffer buffer, int type) {

    int elementSize;
    HasWebGLArray arrayHolder;//from w w  w . j  av a 2  s .  c  o m

    if (!(buffer instanceof HasWebGLArray)) {
        if (type != GL_BYTE && type != GL_UNSIGNED_BYTE) {
            log("buffer byte order problem");
            throw new RuntimeException("Buffer byte order problem");
        }
        if (buffer instanceof IntBuffer) {
            elementSize = 4;
        } else {
            throw new RuntimeException("NYI");
        }
        arrayHolder = (HasWebGLArray) ((ByteBufferWrapper) buffer).getByteBuffer();
    } else {
        arrayHolder = (HasWebGLArray) buffer;
        elementSize = arrayHolder.getElementSize();
    }

    WebGLArray<?> webGLArray = arrayHolder.getWebGLArray();
    int remainingBytes = buffer.remaining() * elementSize;

    int byteOffset = webGLArray.getByteOffset() + buffer.position() * elementSize;

    switch (type) {
    case WebGL.GL_FLOAT:
        return WebGLFloatArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes / 4);

    case WebGL.GL_UNSIGNED_BYTE:
        return WebGLUnsignedByteArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes);

    case WebGL.GL_UNSIGNED_SHORT:
        return WebGLUnsignedShortArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes / 2);

    case WebGL.GL_INT:
        return WebGLIntArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes / 4);

    case WebGL.GL_SHORT:
        return WebGLShortArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes / 2);

    case WebGL.GL_BYTE:
        return WebGLByteArray.create(webGLArray.getBuffer(), byteOffset, remainingBytes);
    }

    throw new IllegalArgumentException();
}

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