Vendor rlottie sources with CMake and MinGW build adjustments

tools/chatgui/rlottie_src/src/vector/vdrawhelper_neon.cpp

@@ -0,0 +1,33 @@
+#if defined(__ARM_NEON__)
+
+#include "vdrawhelper.h"
+
+extern "C" void pixman_composite_src_n_8888_asm_neon(int32_t w, int32_t h,
+                                                     uint32_t *dst,
+                                                     int32_t   dst_stride,
+                                                     uint32_t  src);
+
+extern "C" void pixman_composite_over_n_8888_asm_neon(int32_t w, int32_t h,
+                                                      uint32_t *dst,
+                                                      int32_t   dst_stride,
+                                                      uint32_t  src);
+
+void memfill32(uint32_t *dest, uint32_t value, int length)
+{
+    pixman_composite_src_n_8888_asm_neon(length, 1, dest, length, value);
+}
+
+static void color_SourceOver(uint32_t *dest, int length,
+                                      uint32_t color,
+                                     uint32_t const_alpha)
+{
+    if (const_alpha != 255) color = BYTE_MUL(color, const_alpha);
+
+    pixman_composite_over_n_8888_asm_neon(length, 1, dest, length, color);
+}
+
+void RenderFuncTable::neon()
+{
+    updateColor(BlendMode::Src , color_SourceOver);
+}
+#endif