radeonsi: preload PS inputs only if KILL is used
so that most shaders can get lower VGPR usage thanks to lazy input loading. I think this is a more accurate constraint that prevents the black transitions in Witcher 2. Affected shaders (7758): Max Waves: 57437 -> 58231 (1.38 %) Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
parent
7b32ae4df5
commit
59c5da40ed
|
@ -637,11 +637,15 @@ store_value_to_array(struct lp_build_tgsi_context *bld_base,
|
|||
|
||||
/* If this is true, preload FS inputs at the beginning of shaders. Otherwise,
|
||||
* reload them at each use. This must be true if the shader is using
|
||||
* derivatives, because all inputs should be loaded in the WQM mode.
|
||||
* derivatives and KILL, because KILL can leave the WQM and then a lazy
|
||||
* input load isn't in the WQM anymore.
|
||||
*/
|
||||
static bool si_preload_fs_inputs(struct si_shader_context *ctx)
|
||||
{
|
||||
return ctx->shader->selector->info.uses_derivatives;
|
||||
struct si_shader_selector *sel = ctx->shader->selector;
|
||||
|
||||
return sel->info.uses_derivatives &&
|
||||
sel->info.uses_kill;
|
||||
}
|
||||
|
||||
static LLVMValueRef
|
||||
|
|
Loading…
Reference in New Issue