Drawable Renderer (#1570), warnings

src/mbgl/gfx/drawable_builder.cpp

@@ -41,7 +41,7 @@ const UniqueDrawable& DrawableBuilder::getCurrentDrawable(bool createIfNone) {
 void DrawableBuilder::flush() {
     if (!impl->vertices.empty()) {
         const auto& draw = getCurrentDrawable(/*createIfNone=*/true);
-        draw->setLineWidth(lineWidth);
+        draw->setLineWidth(static_cast<int32_t>(lineWidth));
         draw->setRenderPass(renderPass);
         draw->setDrawPriority(drawPriority);
         draw->setLayerIndex(layerIndex);

src/mbgl/gl/upload_pass.cpp

@@ -189,7 +189,7 @@ gfx::AttributeBindingArray UploadPass::buildAttributeBindings(
         pad(allData, align, padding);
 
         // The vertex stride is the sum of the attribute strides
-        vertexStride += stride;
+        vertexStride += static_cast<uint32_t>(stride);
     };
     defaults.resolve(overrides, resolveAttr);