src/gallium/drivers/i915/TODO

   1 Random list of problems with i915g:
   2
   3 - Check if PIPE_CAP_BLEND_EQUATION_SEPARATE work, the code is there.
   4   If not fix it! A simple task, good for beginners.
   5
   6 - Add support for PIPE_CAP_POINT_SPRITE either via the draw module or directly
   7   via the hardware, look at the classic driver, more advanced.
   8
   9 - What does this button do? Figure out LIS7 with regards to depth offset.
  10
  11 - Dies with BadDrawable on GLXFBconfig changes/destruction. Makes piglit totally
  12   unusable :( Upgrading xserver helped here, it doesn't crash anymore. Still
  13   broken, it doesn't update the viewport/get new buffers.
  14
  15 - Kills the chip in 3D_PRIMITIVE LINELIST with mesa-demos/fbotexture in
  16   wireframe mode. Changing the cullmode to cw from none mitigates the crash. As
  17   does emitting only one line segment (2 indices) per 3D_PRIMITIVE command in
  18   the batch.
  19
  20 - Y-tiling is even more fun. i915c doesn't use it, maybe there's a reason?
  21   Texture sampling from Y-tiled buffers seems to work, though (save above
  22   problems).
  23   RESOLVED: Y-tiling works with the render engine, but not with the blitter.
  24   Use u_blitter and hw clears (PRIM3D_CLEAR_RECT).
  25
  26 - src/xvmc/i915_structs.h in xf86-video-intel has a few more bits of various
  27   commands defined. Scavenge them and see what's useful.
  28
  29 - Do smarter remapping. Right now we send everything onto tex coords 0-7.
  30   We could also use diffuse/specular and pack two sets of 2D coords in a single
  31   4D. Is it a big problem though? We're more limited by the # of texture
  32   indirections and the # of instructions.
  33
  34 - Leverage draw to enable more caps:
  35   * PIPE_CAP_TGSI_INSTANCEID
  36   * PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS
  37
  38 - Finish front/back face. We need to add face support to lp_build_system_values_array and use it in draw_llvm.c.
  39
  40 - Replace constants and immediates which are 0,1,-1 or a combination of those with a swizzle.
  41
  42 Other bugs can be found here:
  43 https://bugs.freedesktop.org/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&component=Drivers/Gallium/i915g