From 9bc92cbd0be7b1973960e88808feaca26a00aecd Mon Sep 17 00:00:00 2001 From: Felix Domke Date: Wed, 31 Aug 2005 14:19:02 +0000 Subject: - fix when not enough framebuffer memory available --- lib/gdi/gfbdc.cpp | 37 ++++++++++++++++++++++--------------- 1 file changed, 22 insertions(+), 15 deletions(-) (limited to 'lib/gdi/gfbdc.cpp') diff --git a/lib/gdi/gfbdc.cpp b/lib/gdi/gfbdc.cpp index a1f4c981..ee2227cf 100644 --- a/lib/gdi/gfbdc.cpp +++ b/lib/gdi/gfbdc.cpp @@ -34,20 +34,24 @@ gFBDC::gFBDC() surface.data_phys = 50*1024*1024; // FIXME - surface_back.type = 0; - surface_back.x = 720; - surface_back.y = 576; - surface_back.bpp = 32; - surface_back.bypp = 4; - surface_back.stride = fb->Stride(); - surface_back.offset = surface.y; - int fb_size = surface.stride * surface.y; - surface_back.data = fb->lfb + fb_size; - surface_back.data_phys = surface.data_phys + fb_size; + if (fb->getNumPages() > 1) + { + m_enable_double_buffering = 1; + surface_back.type = 0; + surface_back.x = 720; + surface_back.y = 576; + surface_back.bpp = 32; + surface_back.bypp = 4; + surface_back.stride = fb->Stride(); + surface_back.offset = surface.y; + surface_back.data = fb->lfb + fb_size; + surface_back.data_phys = surface.data_phys + fb_size; - fb_size *= 2; + fb_size *= 2; + } else + m_enable_double_buffering = 0; eDebug("%dkB available for acceleration surfaces.", (fb->Available() - fb_size)/1024); @@ -139,11 +143,14 @@ void gFBDC::exec(gOpcode *o) } case gOpcode::flip: { - gSurface s(surface); - surface = surface_back; - surface_back = s; + if (m_enable_double_buffering) + { + gSurface s(surface); + surface = surface_back; + surface_back = s; - fb->setOffset(surface_back.offset); + fb->setOffset(surface_back.offset); + } break; } case gOpcode::waitVSync: -- cgit v1.2.3