1 files changed, 4 insertions, 1 deletions
diff --git a/src/gpu/mtl/GrMtlRenderTarget.h b/src/gpu/mtl/GrMtlRenderTarget.h
index 4dac306e7e..83e7d3c240 100644
--- a/src/gpu/mtl/GrMtlRenderTarget.h
+++ b/src/gpu/mtl/GrMtlRenderTarget.h
@@ -63,8 +63,11 @@ protected:
 
     // This accounts for the texture's memory and any MSAA renderbuffer's memory.
     size_t onGpuMemorySize() const override {
+        int numColorSamples = this->numColorSamples();
         // The plus 1 is to account for the resolve texture or if not using msaa the RT itself
-        int numColorSamples = this->numColorSamples() + 1;
+        if (numColorSamples > 1) {
+            ++numColorSamples;
+        }
         return GrSurface::ComputeSize(this->config(), this->width(), this->height(),
                                       numColorSamples, GrMipMapped::kNo);
     }