intel: Add a new bufmgr alloc function to get BOs ready for rendering to.

This avoids using the oldest BO in the BO cache and waiting for it to be
idle before we turn around and render to it with the GPU.  Thanks to
Chris Wilson for pointing out how silly we were being.

1 files changed, 4 insertions, 0 deletions

diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index e8c2e063..111d2afa 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -75,6 +75,10 @@ struct _drm_intel_bo {
 
 drm_intel_bo *drm_intel_bo_alloc(drm_intel_bufmgr *bufmgr, const char *name,
 				 unsigned long size, unsigned int alignment);
+drm_intel_bo *drm_intel_bo_alloc_for_render(drm_intel_bufmgr *bufmgr,
+					    const char *name,
+					    unsigned long size,
+					    unsigned int alignment);
 void drm_intel_bo_reference(drm_intel_bo *bo);
 void drm_intel_bo_unreference(drm_intel_bo *bo);
 int drm_intel_bo_map(drm_intel_bo *bo, int write_enable);