1 Random list of problems with i915g: 2 3 - What does this button do? Figure out LIS7 with regards to depth offset. 4 5 - Dies with BadDrawable on GLXFBconfig changes/destruction. Makes piglit totally 6 unusable :( Upgrading xserver helped here, it doesn't crash anymore. Still 7 broken, it doesn't update the viewport/get new buffers. 8 9 - Y-tiling is even more fun. i915c doesn't use it, maybe there's a reason? 10 Texture sampling from Y-tiled buffers seems to work, though (save above 11 problems). 12 RESOLVED: Y-tiling works with the render engine, but not with the blitter. 13 Use u_blitter and hw clears (PRIM3D_CLEAR_RECT). 14 15 - src/xvmc/i915_structs.h in xf86-video-intel has a few more bits of various 16 commands defined. Scavenge them and see what's useful. 17 18 - Do smarter remapping. Right now we send everything onto tex coords 0-7. 19 We could also use diffuse/specular and pack two sets of 2D coords in a single 20 4D. Is it a big problem though? We're more limited by the # of texture 21 indirections and the # of instructions. 22 23 - Finish front/back face. We need to add face support to lp_build_system_values_array and use it in draw_llvm.c. 24 25 - More optimizations, like replacing ADD + MUL with MAD or use DP2ADD. 26 27 - Replace constants and immediates which are 0,1,-1 or a combination of those with a swizzle. 28 29 - Schedule instructions to minimize the number of phases. One way is to replace 30 R registers responsible for a boundary with U registers to avoid phase 31 boundaries. 32 33 - Continue a previous primitive when there are no state changes 34 35 - Fix fragment discard 36 37 Other bugs can be found here: 38 https://bugs.freedesktop.org/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&component=Drivers/Gallium/i915g 39
