From fc8040d695644aaca4596adebeca4ea1369ef630 Mon Sep 17 00:00:00 2001
From: Fox Caminiti <fox@foxcam.net>
Date: Fri, 22 Jul 2022 20:45:08 -0400
Subject: first

---
 threading.cpp | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 threading.cpp

(limited to 'threading.cpp')

diff --git a/threading.cpp b/threading.cpp
new file mode 100644
index 0000000..07584bd
--- /dev/null
+++ b/threading.cpp
@@ -0,0 +1,59 @@
+internal void
+PushRect(rectangle RenderRegion)
+{
+    render_entry *Entry = Entries + EntryCount;
+    Entry->RenderRegion = RenderRegion;
+    __atomic_add_fetch(&EntryCount, 1, __ATOMIC_ACQ_REL);
+    SDL_SemPost(Semaphore);
+}
+
+internal void
+AVX2_RenderLayer(transform_info TransformInfo, pixel_buffer *Buffer, rectangle RenderRegion);
+internal void
+Fallback_RenderLayer(transform_info TransformInfo, pixel_buffer *Buffer, rectangle RenderRegion);
+
+internal bool32
+CheckQueue(render_queue RenderInfo, uint16 Index)
+{
+    bool32 Result = 0;
+    uint32 OriginalEntry = NextEntryToDo;
+    if (NextEntryToDo < EntryCount)
+        {
+            if (__atomic_compare_exchange_n(&NextEntryToDo, &OriginalEntry, NextEntryToDo + 1, true, __ATOMIC_RELEASE, __ATOMIC_ACQUIRE)) {
+                render_entry *Entry = Entries + OriginalEntry;
+                Assert(Entry->RenderRegion.Max.x != 0);
+                for (int16 i = 0; i < RenderInfo.State->NumberOfLayersToRender; i++) {
+                    int16 Idx = RenderInfo.State->LayersToRender[i];
+#if ARM
+                    Fallback_RenderLayer(RenderInfo.File->Layer[Idx]->TransformInfo, RenderInfo.CompBuffer, Entry->RenderRegion);
+                    // RenderLayerNeon(RenderInfo.File->Layer[Idx], RenderInfo.CompBuffer, Entry->RenderRegion);
+#else
+                    // printf("(RENDERING) Thread %i, region X%i Y%i\n", Index, Entry->RenderRegion.Min.x/240, Entry->RenderRegion.Min.y/135);
+                    if (AVXEnabled)
+                        AVX2_RenderLayer(RenderInfo.File->Layer[Idx]->TransformInfo, RenderInfo.CompBuffer, Entry->RenderRegion);
+                    else
+                        Fallback_RenderLayer(RenderInfo.File->Layer[Idx]->TransformInfo, RenderInfo.CompBuffer, Entry->RenderRegion);
+#endif
+                }
+
+                // 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);
+                Result = 1;
+            }
+        }
+    return Result;
+}
+
+internal int
+TestThread(void *ptr)
+{
+    thread_info *ThreadInfo = (thread_info *)ptr;
+    uint16 Index = ThreadInfo->Index;
+    for(;;)
+    {
+        if (!CheckQueue(*ThreadInfo->RenderInfo, Index))
+        {
+            SDL_SemWait(Semaphore);
+        }
+    }
+}
-- 
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