From 20ee275974a58cd221031d522ad58a9548af2a31 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 16 Dec 2009 16:18:22 -0500 Subject: [PATCH] r600: Invert front face winding when rendering to FBO fixes fdo bug 25679 Signed-off-by: Alex Deucher --- src/mesa/drivers/dri/r600/r700_state.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/mesa/drivers/dri/r600/r700_state.c b/src/mesa/drivers/dri/r600/r700_state.c index 244a016e07e..e763d2803c7 100644 --- a/src/mesa/drivers/dri/r600/r700_state.c +++ b/src/mesa/drivers/dri/r600/r700_state.c @@ -655,6 +655,10 @@ static void r700UpdateCulling(GLcontext * ctx) CLEARbit(r700->PA_SU_SC_MODE_CNTL.u32All, FACE_bit); /* default: ccw */ break; } + + /* Winding is inverted when rendering to FBO */ + if (ctx->DrawBuffer && ctx->DrawBuffer->Name) + r700->PA_SU_SC_MODE_CNTL.u32All ^= FACE_bit; } static void r700UpdateLineStipple(GLcontext * ctx) -- 2.30.2