From 313ca58550163380e072880b360bc6076d27c8e5 Mon Sep 17 00:00:00 2001
From: Fox Caminiti <fox@foxcam.net>
Date: Wed, 27 Jul 2022 15:46:42 -0400
Subject: switched threading to SDL; works on windows now

---
 threading.cpp | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

(limited to 'threading.cpp')

diff --git a/threading.cpp b/threading.cpp
index 39e7b75..1b89136 100644
--- a/threading.cpp
+++ b/threading.cpp
@@ -1,26 +1,30 @@
 internal void
 PushRect(rectangle RenderRegion)
 {
-    render_entry *Entry = Entries + EntryCount;
+    uint32 Q = SDL_AtomicGet(&QueuedEntries);
+    render_entry *Entry = Entries + Q;
     Entry->RenderRegion = RenderRegion;
-    __atomic_add_fetch(&EntryCount, 1, __ATOMIC_ACQ_REL);
+    SDL_AtomicAdd(&QueuedEntries, 1);
     SDL_SemPost(Semaphore);
 }
 
+internal void
+RenderLayers(render_queue *RenderInfo, rectangle RenderRegion);
 
 internal bool32
 CheckQueue(render_queue RenderInfo, uint16 Index)
 {
     bool32 Result = 0;
-    uint32 OriginalEntry = NextEntryToDo;
-    if (NextEntryToDo < EntryCount)
+    uint32 Q = SDL_AtomicGet(&QueuedEntries);
+    uint32 C = SDL_AtomicGet(&CurrentEntry);
+    if (Q > C)
         {
-            if (__atomic_compare_exchange_n(&NextEntryToDo, &OriginalEntry, NextEntryToDo + 1, true, __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) {
-                render_entry *Entry = Entries + OriginalEntry;
+            if (SDL_AtomicCAS(&CurrentEntry, C, C + 1)) {
+                render_entry *Entry = Entries + C;
                 Assert(Entry->RenderRegion.Max.x != 0);
-                RenderLayers(RenderInfo, Entry->RenderRegion);
+                RenderLayers(&RenderInfo, Entry->RenderRegion);
                 // printf("(FINISHED) Thread %i, region X%i Y%i\n", Index, Entry->RenderRegion.Min.x/240, Entry->RenderRegion.Min.y/135);
-                __atomic_add_fetch(&CompletedJobs, 1, __ATOMIC_ACQ_REL);
+                SDL_AtomicAdd(&CompletedEntries, 1);
                 Result = 1;
             }
         }
-- 
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