Main Page Modules C++ Classes Compound List File List Index Related Pages What is the Nebula Device? Features Downloads License Contact Us Documentation FAQ Getting Started Script Docs Links forums Bugs Nebula2 on Sourceforge Radon Labs Categories News Images changes Search Archives July 2008 May 2008 April 2007 March 2007 August 2006 June 2006 March 2006 October 2005 August 2005 July 2005 Meta Login RSS Comments RSS Graphics System Detailed Description This section of the documentation covers Nebula graphics system and it's subsystems. Coordinate System Mesh Support Texture support Coordinate System The default coordinate system of Nebula is right-handed coordinate system but Nebula can use a left-handed coordinate system either. The defalt culling mode of Nebula is clockwise. Note: The default coordinate system of Direct3D is left-handed and OpenGL uses a right-handed coordinate system. Mesh Support nMesh2 encapsulates a vertex and index buffer. A mesh is loaded from a mesh resource file (.n3d2 for ASCII and .nvx2 for binary). A meshes vertex and index buffers are accesible via nMesh2::Lock() and nMesh2::Unlock(). It is possible to give hints to the gfx system as to how the mesh will be used. The usage flags should be specified to nMesh2::SetUsage(). WriteOnce CPU only fills the vertex buffer once, and never touches it again.(default value) WriteOnly CPU writes frequently to vertex buffer, but never read data back. ReadOnly CPU reads from the vertex buffer, which can never be rendered. NPatch Obsolete. RTPatch Obsolete. PointSprite Mesh is used to provide point sprite data NeedsVertexShader Hints to the gfx system that this mesh will be used with a vertex shader. The DirectX 9 Graphics System uses this to enable software vertex processing on systems that have no hardware vertex shader support. There's some other vertex components for tangent, binormals which for per-pixellighting and weights and joint indices for vertex skinning. Another special helper class for mesh is nDynamicMesh for CPU generated geometry. (i.e. Particle System) Texture support The default image format for textures is DDS. Other image formats may be supported (see the docs for the actual graphics server used), but should only be used in tools or during testing as the loading is slow and the internal texture format can be inefficient. DDS files can be in many formats and support cube and volume textures (volume textures aren't yet supported in Nebula2), they can also contain mip map levels. Note: When using DDS files any mip maps you need should be pre generated as Nebula2 will assume the DDS file contains all needed mip maps. Nebula2 will generate mip maps for other file formats. For information on DDS, see: DDS Files Modules   Camera System   DirectX 9 Graphics System   Nebula Graphics Tools   OpenGL Graphics Subsystem   This is an initial implementation of an OpenGL-based renderer for Nebula 2. Classes class   nCamera2 Nebula Device 2 documentation generated by doxygen at Sun Apr 8 20:08:31 2007