SLGPUImageFilter Class Reference
| Inherits from | SLGPUImageOutput : NSObject |
|---|---|
| Conforms to | SLGPUImageInput |
| Declared in | SLGPUImageFilter.h |
Overview
SLGPUImage’s base filter class
Filters and other subsequent elements in the chain conform to the SLGPUImageInput protocol, which lets them take in the supplied or processed texture from the previous link in the chain and do something with it. Objects one step further down the chain are considered targets, and processing can be branched by adding multiple targets to a single output or filter.
Initialization and teardown
– initWithVertexShaderFromString:fragmentShaderFromString:
Initialize with vertex and fragment shaders
- (id)initWithVertexShaderFromString:(NSString *)vertexShaderString fragmentShaderFromString:(NSString *)fragmentShaderStringParameters
vertexShaderString |
Source code of the vertex shader to use |
|---|---|
fragmentShaderString |
Source code of the fragment shader to use |
Discussion
You make take advantage of the SHADER_STRING macro to write your shaders in-line.
Declared In
SLGPUImageFilter.h
– initWithFragmentShaderFromString:
Initialize with a fragment shader
- (id)initWithFragmentShaderFromString:(NSString *)fragmentShaderStringParameters
fragmentShaderString |
Source code of fragment shader to use |
|---|
Discussion
You may take advantage of the SHADER_STRING macro to write your shader in-line.
Declared In
SLGPUImageFilter.h
– initWithFragmentShaderFromFile:
Initialize with a fragment shader
- (id)initWithFragmentShaderFromFile:(NSString *)fragmentShaderFilenameParameters
fragmentShaderFilename |
Filename of fragment shader to load |
|---|
Declared In
SLGPUImageFilter.h