Class: FilterManager

Extends

• SINT.WebGLManager

Members

renderer SINT.WebGLRenderer inherited overrides

The renderer this manager works for.

Methods

applyFilter (filter, input, output, clear)

Draws a filter.

Name	Type	Description
filter	SINT.Filter	The filter to draw.
input	SINT.RenderTarget	The input render target.
output	SINT.RenderTarget	The target to output to.
clear	boolean	Should the output be cleared before rendering to it

calculateNormalizedScreenSpaceMatrix (outputMatrix)SINT.Matrix

Multiply vTextureCoord to this matrix to achieve (0,0,1,1) for filterArea

Name	Type	Description
outputMatrix	SINT.Matrix	The matrix to output to.

Returns:

Type	Description
SINT.Matrix	The mapped matrix.

calculateScreenSpaceMatrix (outputMatrix)SINT.Matrix

Calculates the mapped matrix.

TODO playing around here.. this is temporary - (will end up in the shader) this returns a matrix that will normalise map filter cords in the filter to screen space

Name	Type	Description
outputMatrix	SINT.Matrix	the matrix to output to.

Returns:

Type	Description
SINT.Matrix	The mapped matrix.

calculateSpriteMatrix (outputMatrix, sprite)SINT.Matrix

This will map the filter coord so that a texture can be used based on the transform of a sprite

Name	Type	Description
outputMatrix	SINT.Matrix	The matrix to output to.
sprite	SINT.Sprite	The sprite to map to.

Returns:

Type	Description
SINT.Matrix	The mapped matrix.

destroy (contextLost) overrides

Destroys this Filter Manager.

Name	Type	Default	Description
contextLost	boolean	false	optional context was lost, do not free shaders

emptyPool ()

Empties the texture pool.

freePotRenderTarget (renderTarget)

Frees a render target back into the pool.

Name	Type	Description
renderTarget	SINT.RenderTarget	The renderTarget to free

getRenderTarget (clear, resolution)SINT.RenderTarget

Gets a render target from the pool, or creates a new one.

Name	Type	Description
clear	boolean	Should we clear the render texture when we get it?
resolution	number	The resolution of the target.

Returns:

Type	Description
SINT.RenderTarget	The new render target

onContextChange () inherited overrides

Generic method called when there is a WebGL context change.

onPrerender ()

Called before the renderer starts rendering.

popFilter ()

Pops off the filter and applies it.

pushFilter (target, filters)

Adds a new filter to the manager.

Name	Type	Description
target	SINT.DisplayObject	The target of the filter to render.
filters	Array.<SINT.Filter>	The filters to apply.

returnRenderTarget (renderTarget)

Returns a render target to the pool.

Name	Type	Description
renderTarget	SINT.RenderTarget	The render target to return.

syncUniforms (shader, filter)

Uploads the uniforms of the filter.

Name	Type	Description
shader	GLShader	The underlying gl shader.
filter	SINT.Filter	The filter we are synchronizing.