Particle Tex

Uvwgen –

Map – Input slot for the texture map.

Source Transform – Performs world to object transformation of the source.

Alpha From Intensity – Specifies where to take the alpha from.

Bitmap alpha – This is the default setting. With this option selected, V-Ray renders the material the same on both sides. 
Color intensity/luminance – Renders the back side of polygons as invisible for the camera. 
Force opaque – Renders the back side of polygons as invisible to all rays, except shadow rays.

Amplitude –

Blend Alpha –

Blend Method –

Equal
Proportional
Biggest

Color Mode –

Compatibility – Allows you to match the result of the texture in Blender to that in either 3ds Max or Maya.

3ds Max – The resulting alpha of the texture is the intensity of the texture.
Maya – The resulting alpha of the texture is the color luminescence.

H – Specifies the height of the texture sector.

Invert – When enabled inverts the colors in final result.

Invert Alpha – Inverts the alpha channel if Invert is also enabled.

Jitter – The amount of random placement variation.

Pa Amplitude –

Pa Color –

Pa radious –

Pa Shift –

Placement Type – Select how to place the texture.

Whole texture is valid
Crop
Place

Radius –

Radius Mode –

Radius Scale –

Shift –

Shift Mode –

Tile U/V – Tiles the texture in the U and V direction. If the option is disabled, the Default texture color is used outside the 0 to 1 UV square. 

U – U coordinate of the texture sector. 

UV noise phase – Specifies the UV noise phase.

Use 3D Mapping – Enables or disables 3D mapping for the procedural texture. Note that his mode is not supported yet by the Hybrid (CUDA) engine. When this option is enabled, all Texture Placement parameters are ignored.

UV noise amount – Specifies the UV noise amount.

Animate UV noise – If enabled, the noise is animated. Use the UV noise phase to animate the noise.

UV noise levels – Specifies the UV noise iterations. 

UV noise on – Enables the noise.

UV noise size –  Specifies the UV noise size.

V/W – Specifies the V/W coordinate of the texture sector.