intel: Add support for GL_ARB_map_buffer_range.

Passes glean's bufferObject test, and should provide good performance in the
cases applications are expected to use.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.h b/src/mesa/drivers/dri/intel/intel_buffer_objects.h
index 8164407f07..06a8ab9824 100644
--- a/src/mesa/drivers/dri/intel/intel_buffer_objects.h
+++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.h
@@ -48,6 +48,11 @@ struct intel_buffer_object
    struct intel_region *region; /* Is there a zero-copy texture
                                    associated with this (pixel)
                                    buffer object? */
+
+   drm_intel_bo *range_map_bo;
+   unsigned int range_map_offset;
+   GLsizei range_map_size;
+
    GLboolean mapped_gtt;
 };