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@@ -1983,9 +1983,9 @@ copy_pixel_buffer(PixelBuffer *pb, const DisplayRegion *dr) {
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<< (void *)pb->_image.p() << ")" << endl;
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<< (void *)pb->_image.p() << ")" << endl;
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#endif
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#endif
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-
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-//glReadPixels( pb->get_xorg() + xo, pb->get_yorg() + yo, // pb->origin is probably a meaningless vestigial field thats always zero. shouldnt be added here
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- glReadPixels(xo, yo,
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+ // pixelbuffer "origin" represents upper left screen point at which
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+ // pixelbuffer should be drawn using draw_pixel_buffer
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+ glReadPixels(pb->get_xorg() + xo, pb->get_yorg() + yo,
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pb->get_xsize(), pb->get_ysize(),
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pb->get_xsize(), pb->get_ysize(),
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get_external_image_format(pb->get_format()),
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get_external_image_format(pb->get_format()),
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get_image_type(pb->get_image_type()),
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get_image_type(pb->get_image_type()),
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georges