[Mesa-dev] [PATCH 00/12] i965: Begin implementing HiZ

[chad at chad-versace.us]

From: Chad Versace <chad.versace at intel.com>

Begin implementing HiZ for Gen >= 5. Since it's incomplete, the patch series
leaves HiZ disabled default. But you can force enable it with env
INTEL_USE_HIZ=1.

I did a full Piglit run on Gen 5 and found no regressions.

These patches live on my personal hiz branch.


What doesn't work
-----------------
  * Rendering to a window framebuffer with depth or stencil attachment.
  * Rendering to an FBO with GL_DEPTH_STENCIL_ATTACHMENT.
  * HiZ/depth resolves.

What does work
--------------
  * Rendering to an FBO with GL_DEPTH_ATTACHMENT and no GL_STENCIL_ATTACHMENT.
  * Rendering to an FBO with GL_DEPTH_ATTACHMENT and GL_STENCIL_ATTACHMENT.

Chad Versace (12):
  intel: Add flag intel_context.use_hiz
  intel: Override intel_context.use_hiz with env var INTEL_USE_HIZ
  intel: Change supported texture formats
  mesa/main: Add MESA_FORMAT_X8_Z24 to _mesa_choose_tex_format
  intel: Add HiZ region to intel_renderbuffer
  intel: Change allocation of user-created renderbuffers for HiZ
  i965: Change FBO completeness criteria when HiZ is enabled
  i965: Refactor prepare_depthbuffer() and emit_depthbuffer()
  i965: Emit 3D_STATE_HIER_DEPTH_BUFFER
  i965: Define tracked state for separate stencil buffer
  intel: Change signature of intel_context.vtbl.set_draw_region
  i965: Update cached stencil region pointer when updating draw buffers

 src/mesa/drivers/dri/i915/i915_vtbl.c            |    3 +
 src/mesa/drivers/dri/i965/brw_context.h          |    5 +
 src/mesa/drivers/dri/i965/brw_misc_state.c       |  118 ++++++++++++++++++----
 src/mesa/drivers/dri/i965/brw_state.h            |    1 +
 src/mesa/drivers/dri/i965/brw_state_upload.c     |    2 +
 src/mesa/drivers/dri/i965/brw_vtbl.c             |   10 ++
 src/mesa/drivers/dri/i965/brw_wm_surface_state.c |    3 +-
 src/mesa/drivers/dri/intel/intel_buffers.c       |   28 +++--
 src/mesa/drivers/dri/intel/intel_context.c       |   34 ++++++-
 src/mesa/drivers/dri/intel/intel_context.h       |    2 +
 src/mesa/drivers/dri/intel/intel_fbo.c           |   76 +++++++++++---
 src/mesa/drivers/dri/intel/intel_fbo.h           |   20 ++++
 src/mesa/drivers/dri/intel/intel_span.c          |    1 +
 src/mesa/drivers/dri/intel/intel_tex_format.c    |    1 +
 src/mesa/main/texformat.c                        |    2 +
 15 files changed, 258 insertions(+), 48 deletions(-)

-- 
1.7.4.2