Commit 90cf741d authored by Marek Olšák's avatar Marek Olšák Committed by Marge Bot
Browse files

radeonsi: always use Wave64 for HS/GS/VS shader stages (except GS fast launch)

Acked-by: Pierre-Eric Pelloux-Prayer's avatarPierre-Eric Pelloux-Prayer <>
Part-of: <!5524>
parent 9049e398
......@@ -1215,11 +1215,15 @@ static struct pipe_screen *radeonsi_screen_create_impl(struct radeon_winsys *ws,
sscreen->compute_wave_size = 64;
if (sscreen->info.chip_class >= GFX10) {
/* Pixels shaders: Wave64 is recommended.
* Compute shaders: There are piglit failures with Wave32.
/* Pixel shaders: Wave64 is always fastest.
* Vertex shaders: Wave64 is probably better, because:
* - greater chance of L0 cache hits, because more threads are assigned
* to the same CU
* - scalar instructions are only executed once for 64 threads instead of twice
* - VGPR allocation granularity is half of Wave32, so 1 Wave64 can
* sometimes use fewer VGPRs than 2 Wave32
* - TessMark X64 with NGG culling is faster with Wave64
sscreen->ge_wave_size = 32;
if (sscreen->debug_flags & DBG(W32_GE))
sscreen->ge_wave_size = 32;
if (sscreen->debug_flags & DBG(W32_PS))
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment