Random list of problems with i915g:
-- Add support for PIPE_CAP_POINT_SPRITE either via the draw module or directly
- via the hardware, look at the classic driver, more advanced.
-
- What does this button do? Figure out LIS7 with regards to depth offset.
- Dies with BadDrawable on GLXFBconfig changes/destruction. Makes piglit totally
unusable :( Upgrading xserver helped here, it doesn't crash anymore. Still
broken, it doesn't update the viewport/get new buffers.
-- Kills the chip in 3D_PRIMITIVE LINELIST with mesa-demos/fbotexture in
- wireframe mode. Changing the cullmode to cw from none mitigates the crash. As
- does emitting only one line segment (2 indices) per 3D_PRIMITIVE command in
- the batch.
-
- Y-tiling is even more fun. i915c doesn't use it, maybe there's a reason?
Texture sampling from Y-tiled buffers seems to work, though (save above
problems).
- Replace constants and immediates which are 0,1,-1 or a combination of those with a swizzle.
-- i915_delete_fs_state doesn't call draw_delete_fragment_shader. Why?
-
- Schedule instructions to minimize the number of phases. One way is to replace
R registers responsible for a boundary with U registers to avoid phase
boundaries.
- Continue a previous primitive when there are no state changes
-- Switch to the blitter for those buggy blit copies
-- Or state save/restore has a bug with u_blitter, fix it.
+- Fix fragment discard
Other bugs can be found here:
https://bugs.freedesktop.org/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&component=Drivers/Gallium/i915g