GLX/DRI2: Do not expose INTEL_swap_event without swap control
Swap events depent on the implementation of ScheduleSwap. By unconditionally enabling GLX_INTEL_swap_event we're breaking the system with drivers that don't support it because the apps are forever stuck waiting for an event that will never be delivered. So lets enable the extension only if the hooks it depends on are actually there. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
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@ -857,8 +857,6 @@ initializeExtensions(__GLXDRIscreen * screen)
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__glXEnableExtension(screen->glx_enable_bits, "GLX_MESA_copy_sub_buffer");
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LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n");
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__glXEnableExtension(screen->glx_enable_bits, "GLX_INTEL_swap_event");
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LogMessage(X_INFO, "AIGLX: enabled GLX_INTEL_swap_event\n");
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#if __DRI_DRI2_VERSION >= 3
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if (screen->dri2->base.version >= 3) {
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@ -876,8 +874,10 @@ initializeExtensions(__GLXDRIscreen * screen)
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#endif
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if (DRI2HasSwapControl(pScreen)) {
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__glXEnableExtension(screen->glx_enable_bits, "GLX_INTEL_swap_event");
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__glXEnableExtension(screen->glx_enable_bits, "GLX_SGI_swap_control");
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__glXEnableExtension(screen->glx_enable_bits, "GLX_MESA_swap_control");
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LogMessage(X_INFO, "AIGLX: enabled GLX_INTEL_swap_event\n");
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LogMessage(X_INFO,
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"AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n");
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}
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