Add support for shader atomic min/max (S32) (#1948)

1 files changed, 21 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/AtomicMinMaxS32Shared.glsl b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/AtomicMinMaxS32Shared.glsl
new file mode 100644
index 00000000..9f8c641d
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/AtomicMinMaxS32Shared.glsl
@@ -0,0 +1,21 @@
+int Helper_AtomicMaxS32(int offset, int value)
+{
+    uint oldValue, newValue;
+    do
+    {
+        oldValue = $SHARED_MEM$[offset];
+        newValue = uint(max(int(oldValue), value));
+    } while (atomicCompSwap($SHARED_MEM$[offset], newValue, oldValue) != oldValue);
+    return int(oldValue);
+}
+
+int Helper_AtomicMinS32(int offset, int value)
+{
+    uint oldValue, newValue;
+    do
+    {
+        oldValue = $SHARED_MEM$[offset];
+        newValue = uint(min(int(oldValue), value));
+    } while (atomicCompSwap($SHARED_MEM$[offset], newValue, oldValue) != oldValue);
+    return int(oldValue);
+}
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