[no bug]Texture transparency on DIRECT3D

[mfortik]

I found problem with rendering texture with alpha channel using Direct3D driver. Visibility of transparent part of texture depends on distance between camera and billboard with this texture. This issue is only for Direct3D not for OpenGL.

Irrlicht Engine version 1.6
Microsoft Windows XP Professional Service Pack 3 (Build 2600)
Using renderer: Direct3D 9.0
NVIDIA GeForce GTX 295 nv4_disp.dll 6.14.11.9038

There is changed code of example 07.Collision_vc9:

Code: Select all

/** Example 007 Collision
main.cpp file line 171
*/

	// Add the billboard.
	scene::IBillboardSceneNode * bill = smgr->addBillboardSceneNode();
	//bill->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR );
	bill->setMaterialType(video::EMT_TRANSPARENT_ALPHA_CHANNEL );
	irr::video::ITexture* tex = driver->getTexture("../../media/woman_doctor_idle.png");
	//bill->setMaterialTexture(0, driver->getTexture("../../media/particle.bmp"));
	driver->makeColorKeyTexture(tex, core::position2d<s32>(0,0));
	bill->setMaterialTexture(0, tex);
...

There is source picture woman_doctor_idle.png:



There are two results of Irrlicht rendering, first is longer distance and second is shorter distance from billboard:

[randomMesh]

Maybe using a texture that is pot helps.

[hybrid]

Well, calling regenerateMipmaps will also solve this problem. Please read the API for proper function usage.