from panda3d.core import ShaderPool
- class ShaderPool
This is the preferred interface for loading shaders for the
TextNodesystem. It is similar to
TexturePoolin that it unifies references to the same filename.
- static add_shader(filename: Filename, shader: Shader)
Adds the indicated already-loaded shader to the pool. The shader will always replace any previously-loaded shader in the pool that had the same filename.
- static garbage_collect() int
Releases only those shaders in the pool that have a reference count of exactly 1; i.e. only those shaders that are not being used outside of the pool. Returns the number of shaders released.
- static has_shader(filename: Filename) bool
Returns true if the shader has ever been loaded, false otherwise.
- static list_contents(out: ostream)
Lists the contents of the shader pool to the indicated output stream.
- static load_shader(filename: Filename) Shader
Loads the given filename up into a shader, if it has not already been loaded, and returns the new shader. If a shader with the same filename was previously loaded, returns that one instead. If the shader file cannot be found, returns NULL.
- static release_all_shaders()
Releases all shaders in the pool and restores the pool to the empty state.
- static release_shader(filename: Filename)
Removes the indicated shader from the pool, indicating it will never be loaded again; the shader may then be freed. If this function is never called, a reference count will be maintained on every shader every loaded, and shaders will never be freed.
- static verify_shader(filename: Filename) bool
Loads the given filename up into a shader, if it has not already been loaded, and returns true to indicate success, or false to indicate failure. If this returns true, it is guaranteed that a subsequent call to
load_shader()with the same shader name will return a valid Shader pointer.