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GPU: Improve the shader cache GC behavior #106386

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Miguel Pozo merged 3 commits from pragma37/blender:pull-fix-105057 into main 2023-04-10 11:39:13 +02:00
Conversation 0 Commits 3 Files Changed 1 +8 -11
1 changed files with 8 additions and 11 deletions
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19
source/blender/gpu/intern/gpu_codegen.cc
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@ -92,6 +92,8 @@ struct GPUPass {
GPUCodegenCreateInfo *create_info = nullptr;
/** Orphaned GPUPasses gets freed by the garbage collector. */
uint refcount;
/** The last time the refcount was greater than 0. */
int gc_timestamp;
/** Identity hash generated from all GLSL code. */
uint32_t hash;
/** Did we already tried to compile the attached GPUShader. */
@ -909,28 +911,23 @@ void GPU_pass_release(GPUPass *pass)
void GPU_pass_cache_garbage_collect(void)
{
static int lasttime = 0;
const int shadercollectrate = 60; /* hardcoded for now. */
int ctime = int(PIL_check_seconds_timer());
if (ctime < shadercollectrate + lasttime) {
return;
}
lasttime = ctime;
BLI_spin_lock(&pass_cache_spin);
GPUPass *next, **prev_pass = &pass_cache;
for (GPUPass *pass = pass_cache; pass; pass = next) {
next = pass->next;
if (pass->refcount == 0) {
if (pass->refcount > 0) {
pass->gc_timestamp = ctime;
}
else if (pass->gc_timestamp + shadercollectrate < ctime) {
/* Remove from list */
*prev_pass = next;
gpu_pass_free(pass);
continue;
}
else {
prev_pass = &pass->next;
}
prev_pass = &pass->next;
}
BLI_spin_unlock(&pass_cache_spin);
}