Constructor Detail

• DefaultGLPixelBufferProvider

  public DefaultGLPixelBufferProvider(boolean allowRowStride)

  Parameters:

  allowRowStride - If true, allow row-stride, otherwise not. See getAllowRowStride() and GLPixelBuffer.requiresNewBuffer(GL, int, int, int).

Method Detail

• getAllowRowStride

  public boolean getAllowRowStride()

  Description copied from interface: GLPixelBuffer.GLPixelBufferProvider
  Allow GL2ES3.GL_PACK_ROW_LENGTH, or GL2ES2.GL_UNPACK_ROW_LENGTH.

  Specified by:

  getAllowRowStride in interface GLPixelBuffer.GLPixelBufferProvider

• getAttributes

  public GLPixelBuffer.GLPixelAttributes getAttributes(GL gl,
                                                       int componentCount,
                                                       boolean pack)

  Description copied from interface: GLPixelBuffer.GLPixelBufferProvider
  Returns RGB[A] GLPixelBuffer.GLPixelAttributes matching GL, componentCount and pack.

  Specified by:

  getAttributes in interface GLPixelBuffer.GLPixelBufferProvider

  Parameters:

  gl - the corresponding current GL context object

  componentCount - RGBA component count, i.e. 1 (luminance, alpha or red), 3 (RGB) or 4 (RGBA)

  pack - true for read mode GPU -> CPU, e.g. glReadPixels. false for write mode CPU -> GPU, e.g. glTexImage2D.

• getHostPixelComp

  public PixelFormat.Composition getHostPixelComp(GLProfile glp,
                                                  int componentCount)

  Returns the host PixelFormat.Composition matching GL and componentCount if required by implementation, otherwise null.

  Returns null!

  Specified by:

  getHostPixelComp in interface GLPixelBuffer.GLPixelBufferProvider

  Parameters:

  glp - the corresponding current GL context object

  componentCount - RGBA component count, i.e. 1 (luminance, alpha or red), 3 (RGB) or 4 (RGBA)

• allocate

  public GLPixelBuffer allocate(GL gl,
                                PixelFormat.Composition hostPixComp,
                                GLPixelBuffer.GLPixelAttributes pixelAttributes,
                                boolean pack,
                                int width,
                                int height,
                                int depth,
                                int minByteSize)

  Allocates a new GLPixelBuffer object.

  The minimum required remaining byte size equals to minByteSize, if > 0, otherwise utilize GLBuffers.sizeof(GL, int[], int, int, int, int, int, boolean) to calculate it.

  Returns an NIO ByteBuffer.

  Specified by:

  allocate in interface GLPixelBuffer.GLPixelBufferProvider

  Parameters:

  gl - the corresponding current GL context object

  hostPixComp - host pixel format, i.e. of the source or sink depending on pack, e.g. fetched via GLPixelBuffer.GLPixelBufferProvider.getHostPixelComp(GLProfile, int). If null, pixelAttributes instance maybe used or an exception is thrown, depending on implementation semantics.

  pixelAttributes - the desired GLPixelBuffer.GLPixelAttributes, e.g. fetched via GLPixelBuffer.GLPixelBufferProvider.getAttributes(GL, int, boolean)

  pack - true for read mode GPU -> CPU, e.g. glReadPixels. false for write mode CPU -> GPU, e.g. glTexImage2D.

  width - in pixels

  height - in pixels

  depth - in pixels

  minByteSize - if > 0, the pre-calculated minimum byte-size for the resulting buffer, otherwise ignore.

  See Also:

  GLPixelBuffer.GLPixelBufferProvider.getHostPixelComp(GLProfile, int), GLPixelBuffer.GLPixelBufferProvider.getAttributes(GL, int, boolean)