projective texturing in 2.2

[bayoubengal]

http://wiki.ogre3d.org/Intermediate+Tutorial+6

How would one go about adapting this tutorial to the 2.2 branch?

[dark_sylinc]

See samples:

1. Samples/2.0/ApiUsage/Decals
2. Samples/2.0/ApiUsage/UpdatingDecalsAndAreaLightTex (doesn't show decals, but shows how to update a texture used by decals dynamically, which is the same way it is used for textured area lights)

[bayoubengal]

greetings! After figuring out some problems, I have he decal working. But, I dont' see how to do the Frustum part of the tutorial. I want to project the decal across the scene onto whatever surfaces it hits. The further the surface is from the source, the larger it should appear.

-james

[bayoubengal]

See samples:

1. Samples/2.0/ApiUsage/Decals
2. Samples/2.0/ApiUsage/UpdatingDecalsAndAreaLightTex (doesn't show decals, but shows how to update a texture used by decals dynamically, which is the same way it is used for textured area lights)

I have been experimenting at the following spot in ForwardPlusBase::fillGobalLightListBuffer() to inject a projection matrix into the decal bounds comparison in the shader. I tried a simple scale matrix and got a flickering decal as the camera moves.


*lightData++ = static_cast<float>( invWorldView[0] );

is this concept valid?