the shader of ue3

Graphics and GPU Programming Programming

Started by wpyax June 24, 2010 08:59 PM

3 comments, last by Kryzon 13 years, 9 months ago

wpyax

100

Author

June 24, 2010 08:59 PM

The shader is very different between materials，so the render state of shader change is very frequent。 is't bad?

ArKano22

651

June 25, 2010 04:24 AM

Probably UE3 has its own way of sorting render calls by material. But generally yes, the more state changes you make per frame the worse.

Kryzon

4,684

June 25, 2010 11:15 AM

Do state changes mean BindProgram() calls (when dealing with OpenGL, for instance)?

Does rendering polygons that share the same shader program at the same time serves as improvement over making various BindProgram(0) -> BindProgram(X) calls?

Starfox

504

June 28, 2010 10:32 PM

Here's a nice post about state change costs: link

Holy crap I started a blog - http://unobvious.typepad.com/

Kryzon

4,684

June 30, 2010 04:57 PM

Thank you, Starfox.

PS: "Do a barrel-roll!"

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the shader of ue3

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