intel: Drop viewport hack when we can

1 files changed, 10 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 62ae637dc6..7d83e52f64 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -438,12 +438,15 @@ intel_prepare_render(struct intel_context *intel)
       intel->front_buffer_dirty = GL_TRUE;
 }
 
-void
+static void
 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 {
     struct intel_context *intel = intel_context(ctx);
     __DRIcontext *driContext = intel->driContext;
 
+    if (intel->saved_viewport)
+	intel->saved_viewport(ctx, x, y, w, h);
+
     if (!intel->using_dri2_swapbuffers &&
 	!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
        dri2InvalidateDrawable(driContext->driDrawablePriv);
@@ -608,6 +611,12 @@ intelInitContext(struct intel_context *intel,
    if (intelScreen->bufmgr == NULL)
       return GL_FALSE;
 
+   /* Can't rely on invalidate events, fall back to glViewport hack */
+   if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
+      intel->saved_viewport = functions->Viewport;
+      functions->Viewport = intel_viewport;
+   }
+
    if (!_mesa_initialize_context_for_api(&intel->ctx, api, mesaVis, shareCtx,
 					 functions, (void *) intel)) {
       printf("%s: failed to init mesa context\n", __FUNCTION__);