Blend shaders

These are standard PBR shaders that blend two sets of textures based on the meshes alpha vertex color.

Shader table

Shader	Texture “diffuse”	Texture “specular”	Texture “normal”	Texture “transparency”	Texture “diffuse1”	Texture “specular1”	Texture “normal1”	Texture “normal2”	Parameter “DetailFactor”
Blend_dpnbdpn
Blend_dpndpn
BlendDetail_dpndpnn

Behavior

Standard behaviors

• Uses the PBR lighting model

• Uses dithering

• Uses weather effects

Rendering

The shaders only support deferred rendering and have not been compiled for forward rendering.

Transparency

Neither transparency clipping, nor transparency blending are supported.

Multiple Tangents

These shaders can use a second set of tangents for the second set of textures when the bool parameter enable_multi_tangent_space is set to true.

Vertex colors

Vertex colors get combined with the diffuse texture via multiplication

The alpha gets combined with the blending factor via multiplication.

Texture Blending

The shaders use a blending factor to determine how much the two sets of textures should be blended together.

• Blend_dpnbdpn uses the transparency textures red channel.

• Blend_dpndpn and BlendDetail_dpndpnn rely solely on the vertex color alpha.

Furthermore, the diffuse1 textures alpha channel influences how the diffuse textures get blended together by multiplying into the previous blending factor.

Distance blending

The BlendDetail_dpndpnn shader will fade in the normal2 based on the distance between the camera and surface being rendered. The game usually starts the fade-in at a distance of 180, and fully fades them in at a distance of 150.

Textures

diffuse

A standard albedo texture.

Uses the 1st UV channel.

specular

A standard PRM texture.

Uses the 1st UV channel

normal

A standard normal map texture.

Uses the 1st UV channel.

transparency

The red channel is used for blending between the two texture sets.

Uses the 4th UV channel.

diffuse1

A standard albedo texture.

The alpha influences the blending between this and the diffuse texture.

Uses the 3rd UV channel.

specular1

A standard PRM texture.

Uses the 3rd UV channel.

normal1

A standard normal map texture.

Uses the 3rd UV channel.

Warning

This texture is not used in the BlendDetail_dpndpnn shader!

Yet, a slot is required to specify the normal2 texture, even if this one is left empty!

normal2

A standard normal map texture.

Attempts to use the 4th UV channel.

Gets blended together with the normal texture (influenced by the camera distance).

Parameters

DetailFactor

A float parameter of which the first component scales the texture coordinates of the normal2 textures.