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<p class="MsoNormal"><span lang="EN-US">> At the bottom is another block with GLES 3.1 requirements, which also contains GL_ARB_f_n_a.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">At first, I said “Oh futz, I did not mark that one”. Then I did some thinking. Before expressing<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">my thoughts I want to emphasize that I really do not know what is the best answer, or<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">potentially even a good one. With the caveat in mind, maybe it is best that it is not marked
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">as ready for GL ES. Maybe. The potentially flawed reasoning is as follows:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The patch series enables the extension for OpenGL and the extension stuff, I think, only
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">applies to GL, and not GL ES, contexts. In particular, the “wiring” for the new functions is
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">not implemented for GL ES. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Secondly, the code in Mesa core from patch 3 of this series just checks for the driver<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">reporting it supports the extension; it does not do the check “if driver supports extension<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">AND it is GL”. However, the default geometry values are zero, so the correct error<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">code gets emitted anyways, but the text-error is not correct. This part makes me twitch,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">though it follows the letter of the specs jut tine.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Lastly, and this is just paranoia and quite likely not an issue. I had not checked, much less<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">quote, the relevant sections of the GL ES 3.1 spec. I think they are the same, but I did<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">not check it at all.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">As one can see from the above, when implementing this, GLES did not even cross my mind.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My tendency is to mark the “enabling” of this feature for ES3.1 a separate patch, but on<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">the other hand it is not code, it is just saying the feature is ready for eventual use by ES3.1.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Now in mid e-mail, I am thinking it should be marked. Beats me what is best.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In truth what is making me twitch is Patch 3 under GL ES 3.1. I think that the function
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">might need to be revisited a little when GL ES 3.1 support goes live.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thoughts on this are welcome, particular in reference to Patch 3 of the series.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Kevin<o:p></o:p></span></p>
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