I'm proposing changing from explicitly disallowing token pasting in OpenGL
ES to allowing it in a similar fashion to desktop OpenGL.
I'm proposing this for multiple reasons:
- The Dolphin emulator uses it, and has been broken with Mesa's OpenGL
ES for a number of months.
- A number of proprietary vendors support it even though ESSL3/3.1 spec
explicitly disallows it
The vendors that I know of that support token pasting under OpenGL ES:
- Qualcomm Adreno
- ARM Mali
- Nvidia Tegra (OpenGL ES)
The vendors that I haven't tested against:
- IMGTec PowerVR
- Vivante
- Android Intel (Uses something other than Mesa apparently?)
- iOSs (They have a complete in-house shader compiler)
So I think Mesa should allow token pasting even though the spec says not
to. Mainly because I want to get Dolphin working under OpenGL ES with Mesa
again.
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