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-rw-r--r--src/mesa/drivers/dri/unichrome/via_context.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/unichrome/via_context.c b/src/mesa/drivers/dri/unichrome/via_context.c
index 183f3d3479f..dabb233fc02 100644
--- a/src/mesa/drivers/dri/unichrome/via_context.c
+++ b/src/mesa/drivers/dri/unichrome/via_context.c
@@ -336,7 +336,9 @@ calculate_buffer_parameters( struct via_context *vmesa,
if( vmesa->viaScreen->width == vmesa->driDrawable->w &&
vmesa->viaScreen->height == vmesa->driDrawable->h ) {
vmesa->doPageFlip = vmesa->allowPageFlip;
- assert(vmesa->back.pitch == vmesa->front.pitch);
+ if (vmesa->hasBack) {
+ assert(vmesa->back.pitch == vmesa->front.pitch);
+ }
}
else
vmesa->doPageFlip = GL_FALSE;