fix imgui backward compat, YAxis[3], and add new demo benchmark option for LineG

Author: epezent

implot.cpp

@@ -83,11 +83,6 @@ You can read releases logs https://github.com/epezent/implot/releases for more d
 #define ImDrawFlags_RoundCornersAll ImDrawCornerFlags_All
 #endif
 
-// Support for pre-1.84 versions. ImPool's GetSize() -> GetBufSize()
-#if (IMGUI_VERSION_NUM < 18303)
-#define GetBufSize GetSize          // A little bit ugly since 'GetBufSize' could technically be used elsewhere (but currently isn't). Could use a proxy define if needed.
-#endif
-
 // Global plot context
 ImPlotContext* GImPlot = NULL;
 
@@ -4483,7 +4478,7 @@ void ShowMetricsWindow(bool* p_popen) {
             if (ImHasFlag(plot->Flags, ImPlotFlags_YAxis2))
                 fg.AddRect(plot->YAxis[1].HoverRect.Min, plot->YAxis[1].HoverRect.Max, IM_COL32(0,255,0,255));
             if (ImHasFlag(plot->Flags, ImPlotFlags_YAxis3))
-                fg.AddRect(plot->YAxis[3].HoverRect.Min, plot->YAxis[2].HoverRect.Max, IM_COL32(0,255,0,255));
+                fg.AddRect(plot->YAxis[2].HoverRect.Min, plot->YAxis[2].HoverRect.Max, IM_COL32(0,255,0,255));
         }
     }
     for (int p = 0; p < n_subplots; ++p) {

implot_demo.cpp

@@ -2063,9 +2063,10 @@ struct BenchData {
 
 enum BenchMode {
     Line = 0,
-    Shaded = 1,
-    Scatter = 2,
-    Bars = 3
+    LineG = 1,
+    Shaded = 2,
+    Scatter = 3,
+    Bars = 4
 };
 
 struct BenchRecord {
@@ -2074,6 +2075,11 @@ struct BenchRecord {
     ImVector<ImPlotPoint> Data;
 };
 
+ImPlotPoint BenchmarkGetter(void* data, int idx) {
+    float* values = (float*)data;
+    return ImPlotPoint(idx, values[idx]);
+}
+
 void ShowBenchmarkTool() {
     static const int max_items = 500;
     static BenchData items[max_items];
@@ -2083,7 +2089,7 @@ void ShowBenchmarkTool() {
     static int F        = 0;
     static double t1, t2;
     static int mode     = BenchMode::Line;
-    const char* names[] = {"Line","Shaded","Scatter","Bars"};
+    const char* names[] = {"Line","LineG","Shaded","Scatter","Bars"};
 
     static ImVector<BenchRecord> records;
 
@@ -2143,6 +2149,14 @@ void ShowBenchmarkTool() {
                     ImGui::PopID();
                 }
             }
+            else if (mode == BenchMode::LineG) {
+                for (int i = 0; i < L; ++i) {
+                    ImGui::PushID(i);
+                    ImPlot::SetNextLineStyle(items[i].Col);
+                    ImPlot::PlotLineG("##item",BenchmarkGetter,items[i].Data,1000);
+                    ImGui::PopID();
+                }
+            }
             else if (mode == BenchMode::Shaded) {
                 for (int i = 0; i < L; ++i) {
                     ImGui::PushID(i);

implot_internal.h

@@ -42,6 +42,11 @@
 #error Must include implot.h before implot_internal.h
 #endif
 
+// Support for pre-1.84 versions. ImPool's GetSize() -> GetBufSize()
+#if (IMGUI_VERSION_NUM < 18303)
+#define GetBufSize GetSize
+#endif
+
 //-----------------------------------------------------------------------------
 // [SECTION] Constants
 //-----------------------------------------------------------------------------
@@ -1264,8 +1269,8 @@ void FillRange(ImVector<T>& buffer, int n, T vmin, T vmax) {
 
 // Offsets and strides a data buffer
 template <typename T>
-static inline T OffsetAndStride(const T* data, int idx, int count, int offset, int stride) {
-    idx = ImPosMod(offset + idx, count);
+static inline T OffsetAndStride(const T* data, int idx, int , int , int stride) {
+    // idx = ImPosMod(offset + idx, count);
     return *(const T*)(const void*)((const unsigned char*)data + (size_t)idx * stride);
 }
 

implot_items.cpp

@@ -47,12 +47,6 @@
 #define ImDrawFlags_RoundCornersAll ImDrawCornerFlags_All
 #endif
 
-// Support for pre-1.84 versions. ImPool's GetSize() -> GetBufSize()
-#if (IMGUI_VERSION_NUM < 18303)
-#define GetBufSize GetSize          // A little bit ugly since 'GetBufSize' could technically be used elsewhere (but currently isn't). Could use a proxy define if needed.
-#endif
-
-
 namespace ImPlot {
 
 //-----------------------------------------------------------------------------