[Piglit] [PATCH] blendminmax and blendsquare : require 1.4
eric at anholt.net
Wed Nov 10 13:31:51 PST 2010
On Mon, 1 Nov 2010 17:29:42 +0100, Xavier Chantry <chantry.xavier at gmail.com> wrote:
> From glspec14.pdf
> Changes to the Imaging Subset
> The subset of blending features described by BlendEquation, BlendColor,
> and the BlendFunc modes CONSTANT COLOR, ONE MINUS CONSTANT COLOR,
> CONSTANT ALPHA, and ONE MINUS CONSTANT ALPHA are now supported. These
> feature were available only in the optional imaging subset in versions
> 1.2 and 1.3 of the GL.
> If I interpret this correctly, it means glBlendEquation was optional
> before 1.4 and thus could not be called directly.
glBlendEquation is introduced with GL_EXT_blend_minmax. If you expose
that extension, you have glBlendEquation that does ADD, MIN, and MAX. I
pushed a fix for blendsquare to just not use glBlendEquation, and
blendminmax is fine.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 197 bytes
Desc: not available
More information about the Piglit