Does the value in framebuffer is allowed greater than 1.0?

Unity Engine
1

Ie:color.r=0.7
blend DstColor one
SrcColor: constant(1,1,1,1)
//
Belnd DstColor zero
SrcColor: constant(0.5,0.5,0.5,0.5)

result color.r=0.7 not color.r=0.5

2

Depends on the framebuffer.

3

Not clear enough,any official docs or help links would u offer?

4

http://www.opengl.org/registry/doc/glspec43.core.20120806.pdf

Floating-point framebuffer objects (chapter 9) are allowed to have values greater than 1.0. I don’t know how whether or how Unity supports them natively.

EDIT: I guess it does: http://docs.unity3d.com/Documentation/ScriptReference/RenderTextureFormat.ARGBFloat.html

5

I will check it out ,Thank u,guy

6

You are welcome, guy. :wink:

7

Another question,Does the Clamp 01 Operation always happens after the blend operation,even if the Framebuffer’ format is float

OK,I got it,“Use GL_RGBA16F_ARB or GL_RGBA32F_ARB for internal format instead of GL_RGBA8. These wont get clamped”.