glx: Add comments around some extension string weirdness
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@ -1136,6 +1136,10 @@ __glXDRIscreenProbe(ScreenPtr pScreen)
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__glXScreenInit(&screen->base, pScreen);
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__glXScreenInit(&screen->base, pScreen);
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/* The first call simply determines the length of the extension string.
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* This allows us to allocate some memory to hold the extension string,
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* but it requires that we call __glXGetExtensionString a second time.
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*/
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buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
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buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
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if (buffer_size > 0) {
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if (buffer_size > 0) {
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if (screen->base.GLXextensions != NULL) {
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if (screen->base.GLXextensions != NULL) {
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@ -583,6 +583,10 @@ __glXDRIscreenProbe(ScreenPtr pScreen)
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__glXScreenInit(&screen->base, pScreen);
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__glXScreenInit(&screen->base, pScreen);
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/* The first call simply determines the length of the extension string.
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* This allows us to allocate some memory to hold the extension string,
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* but it requires that we call __glXGetExtensionString a second time.
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*/
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buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
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buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
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if (buffer_size > 0) {
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if (buffer_size > 0) {
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if (screen->base.GLXextensions != NULL) {
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if (screen->base.GLXextensions != NULL) {
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