[Mesa-dev] intel: add support for EGL_KHR_gl_image v2

[Abdiel Janulgue]

Version 2 of EGL_KHR_gl_image support. The changes addressed the comments from
Eric Anholt in intel_setup_image_from_mipmap_tree(). 
 
The previous implementation had a potential for orphaning EGL images when we 
overwrite the original miptree for non-tile-aligned surfaces in order to obtain 
corrected offsets back to our exported image. In this version, for non-tile-aligned 
surfaces, we copy the image to a temporary single-level miptree and refer to the 
offsets there instead of re-creating the whole miptree from scratch.

Tested on: Gen4, SandyBridge, IvyBridge

Abdiel Janulgue (6):
      dri2: Create image from texture
      intel: create a miptree for a region based on an offset, size, and level.
      intel: add new miptree helper functions
      i965: Account for offsets when emitting SURFACE_STATE.
      intel: implement create image from texture
      intel: Create a miptree using offsets in intel_set_texture_image_region

 include/GL/internal/dri_interface.h               |   12 ++
 src/egl/drivers/dri2/egl_dri2.c                   |   83 ++++++++++
 src/mesa/drivers/dri/i965/brw_wm_surface_state.c  |   12 +-
 src/mesa/drivers/dri/i965/gen7_wm_surface_state.c |   12 +-
 src/mesa/drivers/dri/intel/intel_mipmap_tree.c    |   56 ++++++-
 src/mesa/drivers/dri/intel/intel_mipmap_tree.h    |   25 +++
 src/mesa/drivers/dri/intel/intel_regions.h        |    8 +
 src/mesa/drivers/dri/intel/intel_screen.c         |  181 ++++++++++++++++++---
 src/mesa/drivers/dri/intel/intel_tex_image.c      |   27 ++-
 9 files changed, 381 insertions(+), 35 deletions(-)