[GPU] Another attempt to fix memleaks caused by depth_bias_slope_scaled

src/xenia/base/math.h

@@ -597,6 +597,19 @@ inline T sat_sub(T a, T b) {
   }
   return T(result);
 }
+
+template <typename T>
+inline T roundToNearestOrderOfMagnitude(T value) {
+  if (!value) {
+    return value;
+  }
+
+  const double order = std::pow(10, std::floor(std::log10(std::fabs(value))));
+  const double rounded = std::round(value / order) * order;
+
+  return static_cast<T>(rounded);
+}
+
 namespace divisors {
 union IDivExtraInfo {
   uint32_t value_;

src/xenia/gpu/draw_util.cc

@@ -95,6 +95,8 @@ void GetPreferredFacePolygonOffset(const RegisterFile& regs,
         !pa_su_sc_mode_cntl.cull_front) {
       scale = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_SCALE].f32;
       offset = regs[XE_GPU_REG_PA_SU_POLY_OFFSET_FRONT_OFFSET].f32;
+
+      scale = roundToNearestOrderOfMagnitude(scale);
     }
     if (pa_su_sc_mode_cntl.poly_offset_back_enable &&
         !pa_su_sc_mode_cntl.cull_back && !scale && !offset) {