Fixed metal circle render tests (#1854)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/mbgl/renderer/layers/render_circle_layer.cpp

@@ -87,6 +87,12 @@ void RenderCircleLayer::evaluate(const PropertyEvaluationParameters& parameters)
 #if MLN_DRAWABLE_RENDERER
     if (layerGroup) {
         auto newTweaker = std::make_shared<CircleLayerTweaker>(getID(), evaluatedProperties);
+
+        // propertiesAsUniforms isn't recalculated every update, so carry it over
+        if (layerTweaker) {
+            newTweaker->setPropertiesAsUniforms(layerTweaker->getPropertiesAsUniforms());
+        }
+
         replaceTweaker(layerTweaker, std::move(newTweaker), {layerGroup});
     }
 #endif // MLN_DRAWABLE_RENDERER

src/mbgl/renderer/layers/render_fill_extrusion_layer.cpp

@@ -77,6 +77,12 @@ void RenderFillExtrusionLayer::evaluate(const PropertyEvaluationParameters& para
 #if MLN_DRAWABLE_RENDERER
     if (layerGroup) {
         auto newTweaker = std::make_shared<FillExtrusionLayerTweaker>(getID(), evaluatedProperties);
+
+        // propertiesAsUniforms isn't recalculated every update, so carry it over
+        if (layerTweaker) {
+            newTweaker->setPropertiesAsUniforms(layerTweaker->getPropertiesAsUniforms());
+        }
+
         replaceTweaker(layerTweaker, std::move(newTweaker), {layerGroup});
     }
 #endif // MLN_DRAWABLE_RENDERER

src/mbgl/renderer/layers/render_heatmap_layer.cpp

@@ -71,6 +71,12 @@ void RenderHeatmapLayer::evaluate(const PropertyEvaluationParameters& parameters
     if (renderTarget) {
         if (auto tileLayerGroup = renderTarget->getLayerGroup(0)) {
             auto newTweaker = std::make_shared<HeatmapLayerTweaker>(getID(), evaluatedProperties);
+
+            // propertiesAsUniforms isn't recalculated every update, so carry it over
+            if (layerTweaker) {
+                newTweaker->setPropertiesAsUniforms(layerTweaker->getPropertiesAsUniforms());
+            }
+
             replaceTweaker(layerTweaker, std::move(newTweaker), {std::move(tileLayerGroup)});
         }
     }

src/mbgl/shaders/mtl/circle.cpp

@@ -5,7 +5,7 @@ namespace shaders {
 
 const std::array<AttributeInfo, 8> ShaderSource<BuiltIn::CircleShader, gfx::Backend::Type::Metal>::attributes = {
     AttributeInfo{0, gfx::AttributeDataType::Short2, 1, "a_pos"},
-    AttributeInfo{1, gfx::AttributeDataType::Float2, 1, "a_color"},
+    AttributeInfo{1, gfx::AttributeDataType::Float4, 1, "a_color"},
     AttributeInfo{2, gfx::AttributeDataType::Float2, 1, "a_radius"},
     AttributeInfo{3, gfx::AttributeDataType::Float2, 1, "a_blur"},
     AttributeInfo{4, gfx::AttributeDataType::Float2, 1, "a_opacity"},