ShaderCache

Methods

getShaderProgram(options) → ShaderProgram

Returns a shader program from the cache, or creates and caches a new shader program, given the GLSL vertex and fragment shader source and attribute locations.

Name	Type	Description
options	Object	Object with the following properties: Name Type Description vertexShaderSource String | ShaderSource The GLSL source for the vertex shader. fragmentShaderSource String | ShaderSource The GLSL source for the fragment shader. attributeLocations Object Indices for the attribute inputs to the vertex shader.

Returns:

The cached or newly created shader program.

replaceShaderProgram(options) → ShaderProgram

Returns a shader program from the cache, or creates and caches a new shader program, given the GLSL vertex and fragment shader source and attribute locations.

The difference between this and ShaderCache#getShaderProgram, is this is used to replace an existing reference to a shader program, which is passed as the first argument.

Name	Type	Description
options	Object	Object with the following properties: Name Type Description shaderProgram ShaderProgram optional The shader program that is being reassigned. vertexShaderSource String | ShaderSource The GLSL source for the vertex shader. fragmentShaderSource String | ShaderSource The GLSL source for the fragment shader. attributeLocations Object Indices for the attribute inputs to the vertex shader.

Returns:

The cached or newly created shader program.

Example:

this._shaderProgram = context.shaderCache.replaceShaderProgram({
    shaderProgram : this._shaderProgram,
    vertexShaderSource : vs,
    fragmentShaderSource : fs,
    attributeLocations : attributeLocations
});

See:

• ShaderCache#getShaderProgram