public Triangle ()
{
// initialize vertex byte buffer for shape coordinates
ByteBuffer bb = ByteBuffer.AllocateDirect (
// (number of coordinate values * 4 bytes per float)
triangleCoords.Length * 4);
// use the device hardware's native byte order
bb.Order (ByteOrder.NativeOrder ());
// create a floating point buffer from the ByteBuffer
vertexBuffer = bb.AsFloatBuffer ();
// add the coordinates to the FloatBuffer
vertexBuffer.Put (triangleCoords);
// set the buffer to read the first coordinate
vertexBuffer.Position (0);
// prepare shaders and OpenGL program
int vertexShader = MyGLRenderer.LoadShader (GLES30.GlVertexShader,
vertexShaderCode);
int fragmentShader = MyGLRenderer.LoadShader (GLES30.GlFragmentShader,
fragmentShaderCode);
mProgram = GLES30.GlCreateProgram (); // create empty OpenGL Program
GLES30.GlAttachShader (mProgram, vertexShader); // add the vertex shader to program
GLES30.GlAttachShader (mProgram, fragmentShader); // add the fragment shader to program
GLES30.GlLinkProgram (mProgram); // create OpenGL program executables
}
public Square()
{
// initialize vertex byte buffer for shape coordinates
ByteBuffer bb = ByteBuffer.AllocateDirect(
// (# of coordinate values * 4 bytes per float)
squareCoords.Length * 4);
bb.Order(ByteOrder.NativeOrder());
vertexBuffer = bb.AsFloatBuffer();
vertexBuffer.Put(squareCoords);
vertexBuffer.Position(0);
// initialize byte buffer for the draw list
ByteBuffer dlb = ByteBuffer.AllocateDirect(
// (# of coordinate values * 2 bytes per short)
drawOrder.Length * 2);
dlb.Order(ByteOrder.NativeOrder());
drawListBuffer = dlb.AsShortBuffer();
drawListBuffer.Put(drawOrder);
drawListBuffer.Position(0);
// prepare shaders and OpenGL program
int vertexShader = MyGLRenderer.LoadShader(GLES30.GlVertexShader,
vertexShaderCode);
int fragmentShader = MyGLRenderer.LoadShader(GLES30.GlFragmentShader,
fragmentShaderCode);
mProgram = GLES30.GlCreateProgram(); // create empty OpenGL Program
GLES30.GlAttachShader(mProgram, vertexShader); // add the vertex shader to program
GLES30.GlAttachShader(mProgram, fragmentShader); // add the fragment shader to program
GLES30.GlLinkProgram(mProgram); // create OpenGL program executables
}
