-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 09/14/2011 12:18 PM, Dave Airlie wrote: >>> Hi guys, >>> >>> So I've been noticing there are a number of inconsistencies >>> between EXT_gpu_shader4 and GLSL1.30, are you planning on >>> implementing EXT_gpu_shader4? >>> >>> EXT_gpu_shader4 appears to define "unsigned" and can also use >>> texture2D to sample from integer samplers. >> >> There are a few functional differences between GLSL 1.30 and >> EXT_gpu_shader4. At the very least, EXT_gpu_shader4 supports >> TexBOs and UBOs. I think there are a couple other things as >> well. We're targeting GLSL 1.30 and OpenGL 3.0 in the next major >> release, so there will really only be a short period where we >> have one but not the other in Mesa master. >> >> I think that we may fill-in some of the missing EXT_gpu_shader4 >> bits after GLSL 1.30 is done. My plan was for that to primarily >> be a vehicle to get the simpler / older TexBO and UBO extensions >> working as we work towards GLSL 1.40. >> >>> My main worry is we end up needing GL3.0 entrypoints when we >>> are missing float texture for example, so we would want to >>> expose EXT_gpu_shader4 then I suppose, but then we would want >>> to fix up the GLSL handling for it. >> >> What do you mean? > > Some of us can't ship advertising GL3.0, it would be nice if that > didn't make life harder for apps that don't require all the GL3.0 > features but just want EXT_gpu_shader4 type features. If we don't > advertise GL3.0 we won't get all the new entry points unless we > advertise EXT_gpu_shader4.
That's part of my confusion. The EXT_gpu_shader4 entry points are different from the GL 3.0 entry points. At this point, I don't think there are any (at least not many) apps that will use the EXT_gpu_shader4 entry points. Apps will check for OpenGL 3.0 and will call glXGetProcAddress on glUniform4uiv, not glUniform4uivEXT. Right? I see the problem, I just don't see how EXT_gpu_shader4 actually helps. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5w/g4ACgkQX1gOwKyEAw9rXwCeJruLUj6DjXzcwhetiedvU4n6 HAcAnj/a5661A4g5LU+uCX4ljNZQSg2H =78v2 -----END PGP SIGNATURE----- _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
