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    mesa: implement clamping controls (ARB_color_buffer_float) · e5c6a92a
    Marek Olšák authored
    Squashed commit of the following:
    
    Author: Marek Olšák <maraeo@gmail.com>
    
        mesa: fix getteximage so that it doesn't clamp values
        mesa: update the compute_version function
        mesa: add display list support for ARB_color_buffer_float
        mesa: fix glGet query with GL_ALPHA_TEST_REF and ARB_color_buffer_float
    
    commit b2f6ddf907935b2594d2831ddab38cf57a1729ce
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Tue Aug 31 16:50:57 2010 +0200
    
        mesa: document known possible deviations from ARB_color_buffer_float
    
    commit 5458935be800c1b19d1c9d1569dc4fa30a97e8b8
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Tue Aug 24 21:54:56 2010 +0200
    
        mesa: expose GL_ARB_color_buffer_float
    
    commit aef5c3c6be6edd076e955e37c80905bc447f8a82
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Thu Aug 26 18:12:34 2010 +0200
    
        mesa, mesa/st: handle read color clamping properly
    
        (I'll squash the st/mesa part to a separate commit. -Marek)
    
        We set IMAGE_CLAMP_BIT in the caller based on _ClampReadColor, where
        the operation mandates it.
    
        TODO: did I get the set of operations mandating it right?
    
    commit 3a9cb5e59b676b6148c50907ce6eef5441677e36
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Thu Aug 26 18:09:41 2010 +0200
    
        mesa: respect color clamping in texenv programs (v2)
    
        Changes in v2:
        - Fix attributes other than vertex color sometimes getting clamped
    
    commit de26f9e47e886e176aab6e5a2c3d4481efb64362
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Thu Aug 26 18:05:53 2010 +0200
    
        mesa: restore color clamps on glPopAttrib
    
    commit a55ac3c300c189616627c05d924c40a8b55bfafa
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Thu Aug 26 18:04:26 2010 +0200
    
        mesa: clamp color queries if and only if fragment clamping is enabled
    
    commit 9940a3e31c2fb76cc3d28b15ea78dde369825107
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Wed Aug 25 00:00:16 2010 +0200
    
        mesa: introduce derived _ClampXxxColor state resolving FIXED_ONLY
    
        To do this, we make ClampColor call FLUSH_VERTICES with the appropriate
        _NEW flag.
    
        We introduce _NEW_FRAG_CLAMP since fragment clamping has wide-ranging
        effects, despite being in the Color attrib group.
    
        This may be easily changed by s/_NEW_FRAG_CLAMP/_NEW_COLOR/g
    
    commit 6244c446e3beed5473b4e811d10787e4019f59d6
    Author: Luca Barbieri <luca@luca-barbieri.com>
    Date:   Thu Aug 26 17:58:24 2010 +0200
    
        mesa: add unclamped color parameters
    e5c6a92a