commit b9dcc3e17d20d50b71826a6506f57f2e8073b465
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon May 11 10:52:41 2009 +0200

    debug patch: show driDrawable coords

diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c
index 814fb59..45df949 100644
--- a/src/mesa/drivers/dri/i915/i915_state.c
+++ b/src/mesa/drivers/dri/i915/i915_state.c
@@ -319,6 +319,15 @@ intelCalcViewport(GLcontext * ctx)
    GLfloat *m = intel->ViewportMatrix.m;
    GLfloat yScale, yBias;
 
+   if (intel->driDrawable) {
+	   fprintf(stderr, "intelCalcViewport: driDrawble"
+			   ".h: %i .w: %i .x: %i .y: %i",
+			   intel->driDrawable->h,
+			   intel->driDrawable->w,
+			   intel->driDrawable->x,
+			   intel->driDrawable->y);
+   }
+
    if (ctx->DrawBuffer->Name) {
       /* User created FBO */
       /* y=0=bottom */