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-rw-r--r--src/mesa/main/context.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 19dd55f9d9..ed0addcdbb 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1037,6 +1037,8 @@ init_attrib_groups(GLcontext *ctx)
_mesa_init_multisample( ctx );
#if FEATURE_pixel_transfer
_mesa_init_pixel( ctx );
+#else
+ ctx->Pixel.ReadBuffer = ctx->Visual.doubleBufferMode ? GL_BACK : GL_FRONT;
#endif
_mesa_init_pixelstore( ctx );
_mesa_init_point( ctx );