diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index f1a1c87be5a..104c20b3549 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -6001,7 +6001,21 @@ fs_visitor::allocate_registers(bool allow_spilling) * size linearly with a range of [1kB, 12kB] and 1kB granularity. */ prog_data->total_scratch = ALIGN(last_scratch, 1024); + + assert(prog_data->total_scratch < 12 * 1024); } + + /* We currently only support up to 2MB of scratch space. If we + * need to support more eventually, the documentation suggests + * that we could allocate a larger buffer, and partition it out + * ourselves. We'd just have to undo the hardware's address + * calculation by subtracting (FFTID * Per Thread Scratch Space) + * and then add FFTID * (Larger Per Thread Scratch Space). + * + * See 3D-Media-GPGPU Engine > Media GPGPU Pipeline > + * Thread Group Tracking > Local Memory/Scratch Space. + */ + assert(prog_data->total_scratch < 2 * 1024 * 1024); } } |