public override void createVertexStream(MObject objPath,
MVertexBuffer vertexBuffer,
MComponentDataIndexing targetIndexing,
MComponentDataIndexing sharedIndexing,
MVertexBufferArray sourceStreams)
{
// get the descriptor from the vertex buffer.
// It describes the format and layout of the stream.
MVertexBufferDescriptor descriptor = vertexBuffer.descriptor;
// we are expecting a float stream.
if (descriptor.dataType != Autodesk.Maya.OpenMayaRender.MHWRender.MGeometry.DataType.kFloat) return;
// we are expecting a float2
if (descriptor.dimension != 2) return;
// we are expecting a texture channel
if (descriptor.semantic != Autodesk.Maya.OpenMayaRender.MHWRender.MGeometry.Semantic.kTexture) return;
// get the mesh from the current path, if it is not a mesh we do nothing.
MFnMesh mesh = null;
try {
mesh = new MFnMesh(objPath);
} catch(System.Exception) {
return; // failed
}
MUintArray indices = targetIndexing.indicesProperty;
uint vertexCount = indices.length;
if (vertexCount <= 0) return;
unsafe {
// acquire the buffer to fill with data.
float * buffer = (float *)vertexBuffer.acquire(vertexCount);
for (int i = 0; i < vertexCount; i++)
{
// Here we are embedding some custom data into the stream.
// The included effects (vertexBufferGeneratorGL.cgfx and
// vertexBufferGeneratorDX11.fx) will alternate
// red, green, and blue vertex colored triangles based on this input.
*(buffer++) = 1.0f;
*(buffer++) = (float)indices[i]; // color index
}
// commit the buffer to signal completion.
vertexBuffer.commit( (byte *)buffer);
}
}
public override void createVertexStream(MObject objPath,
MVertexBuffer vertexBuffer,
MComponentDataIndexing targetIndexing,
MComponentDataIndexing sharedIndexing,
MVertexBufferArray sourceStreams)
{
// get the descriptor from the vertex buffer.
// It describes the format and layout of the stream.
MVertexBufferDescriptor descriptor = vertexBuffer.descriptor;
// we are expecting a float stream.
if (descriptor.dataType != Autodesk.Maya.OpenMayaRender.MHWRender.MGeometry.DataType.kFloat)
{
return;
}
// we are expecting a float2
if (descriptor.dimension != 2)
{
return;
}
// we are expecting a texture channel
if (descriptor.semantic != Autodesk.Maya.OpenMayaRender.MHWRender.MGeometry.Semantic.kTexture)
{
return;
}
// get the mesh from the current path, if it is not a mesh we do nothing.
MFnMesh mesh = null;
try {
mesh = new MFnMesh(objPath);
} catch (System.Exception) {
return; // failed
}
MUintArray indices = targetIndexing.indicesProperty;
uint vertexCount = indices.length;
if (vertexCount <= 0)
{
return;
}
unsafe {
// acquire the buffer to fill with data.
float *buffer = (float *)vertexBuffer.acquire(vertexCount);
for (int i = 0; i < vertexCount; i++)
{
// Here we are embedding some custom data into the stream.
// The included effects (vertexBufferGeneratorGL.cgfx and
// vertexBufferGeneratorDX11.fx) will alternate
// red, green, and blue vertex colored triangles based on this input.
*(buffer++) = 1.0f;
*(buffer++) = (float)indices[i]; // color index
}
// commit the buffer to signal completion.
vertexBuffer.commit((byte *)buffer);
}
}
