| 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). |
| RESOLVED: Y-tiling works with the render engine, but not with the blitter. |
| Use u_blitter and hw clears (PRIM3D_CLEAR_RECT). |
| |
| - src/xvmc/i915_structs.h in xf86-video-intel has a few more bits of various |
| commands defined. Scavenge them and see what's useful. |
| |
| - Do smarter remapping. Right now we send everything onto tex coords 0-7. |
| We could also use diffuse/specular and pack two sets of 2D coords in a single |
| 4D. Is it a big problem though? We're more limited by the # of texture |
| indirections and the # of instructions. |
| |
| - Finish front/back face. We need to add face support to lp_build_system_values_array and use it in draw_llvm.c. |
| |
| - More optimizations, like replacing ADD + MUL with MAD or use DP2ADD. |
| |
| - 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. |
| |
| 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 |
