remove no-op simd unmultiply

Should've done this in tandem with this: https://github.com/rive-app/rive/pull/7820 Diffs= 87c967127 remove no-op simd unmultiply (#7836) Co-authored-by: Luigi Rosso <[email protected]>
rive-app · Aug 14, 2024 · 86a5211 · 86a5211
1 parent 8fef85d
commit 86a5211
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diff --git a/.rive_head b/.rive_head
@@ -1 +1 @@
-4fb978a9230fc006b5e575364f062907e7dd2afe
+87c9671271dadc0271156094058d74b01954aaf3
diff --git a/Source/Renderer/RenderContextManager.mm b/Source/Renderer/RenderContextManager.mm
@@ -70,16 +70,6 @@ @implementation RiveRendererContext
             {
                 return nullptr;
             }
-            // CG only supports premultiplied alpha. Unmultiply now.
-            size_t imageSizeInBytes = image.height * image.width * 4;
-            for (size_t i = 0; i < imageSizeInBytes; i += 4)
-            {
-                auto rgba = rive::simd::load<uint8_t, 4>(&image.pixels[i]);
-                if (rgba.a != 0)
-                {
-                    rgba = rgba * 255 / rgba.a;
-                }
-            }
             uint32_t mipLevelCount = rive::math::msb(image.height | image.width);
             return makeImageTexture(image.width, image.height, mipLevelCount, image.pixels.data());
         }
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		@@ -1 +1 @@
		4fb978a9230fc006b5e575364f062907e7dd2afe
		87c9671271dadc0271156094058d74b01954aaf3