Hi,

I have two questions about objects fading and changing material technique:

1. When I changed material technique i had to use mesh->setMaterial(changed_material); but when I change only colors I can use only material.validate(); Does I understand it correct? Is there any way to change technique using only validate?

2. Is there any other way to make objects fade in and out? Now I have to change my material technique to BLEND_LIGHT and then change smoothly alpha parameter to 0 and it doesn't look cool when primary technique was fur for example.

1. after any change in Material, Material.validate must be called.
if you change material substantially (like technique or texture count) then Mesh.setShader must be called as well

2. I recommend Mesh.drawBlend (doesn't require changing material params at all)

Thanks, is it possible to make Mesh.drawBlend to be affected by lightning? Or in this case I should modify material parameters?

it should be affected by most significant directional light only. other lights are not possible for blending

I used only one light from sun and when I change it's power object (which mesh was drawing with drawBlend) was still bright.

please attach some sample images, mesh+mtrl+gfx files, and sample code how you do the drawing of the object.

Inside my class:

Quote:void Monster::drawBlend()
{
... frustum ...
Vec4 v=Vec4(1,1,1,1);
MaterialLock=material();
mesh->drawBlend(matrix,&v);
MaterialLock=NULL;
}

In Render function:

Quote:case RM_BLEND:
{
monster->drawBlend();
}break;

My class currently based on Game::Obj class but I'm not adding items to ObjMemx container because I'm creating objects of this class in code (so I call drawing manually).

mesh+material+gfx:

http://www.sendspace.com/file/0c3hbb

Edit:
It works ok when material is set to BLEND_LIGHT and TEST_BLEND_LIGHT, but if I understand correct mesh->drawBlend should use blend even when material hasn't got set this technique?

cool texture, I've reproduced the issue and checking for a fix.

should be ok in next SDK

Thanks x2 but I found it on the internet