diff --git a/imgui.cpp b/imgui.cpp
index a78912f..da66094 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -248,6 +248,7 @@
  - tooltip: move to fit within screen (e.g. when mouse cursor is right of the screen).
  - clipboard: automatically transform \n into \n\r or equivalent for higher compatibility on windows
  - portability: big-endian test/support (github issue #81)
+ - misc: rounded triangle fail to draw correctly on OpenGL3 example.
  - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
  - misc: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
  - style editor: color child window height expressed in multiple of line height.
@@ -351,6 +352,7 @@
     WindowMinSize           = ImVec2(32,32);    // Minimum window size
     WindowRounding          = 9.0f;             // Radius of window corners rounding. Set to 0.0f to have rectangular windows
     FramePadding            = ImVec2(4,3);      // Padding within a framed rectangle (used by most widgets)
+    FrameRounding           = 0.0f;             // Radius of frame corners rounding. Set to 0.0f to have rectangular frames (used by most widgets).
     ItemSpacing             = ImVec2(8,4);      // Horizontal and vertical spacing between widgets/lines
     ItemInnerSpacing        = ImVec2(4,4);      // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label)
     TouchExtraPadding       = ImVec2(0,0);      // Expand bounding box for touch-based system where touch position is not accurate enough (unnecessary for mouse inputs). Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget running. So dont grow this too much!
@@ -2830,6 +2832,7 @@
     {
     case ImGuiStyleVar_Alpha: return &g.Style.Alpha;
     case ImGuiStyleVar_WindowRounding: return &g.Style.WindowRounding;
+    case ImGuiStyleVar_FrameRounding: return &g.Style.FrameRounding;
     case ImGuiStyleVar_TreeNodeSpacing: return &g.Style.TreeNodeSpacing;
     }
     return NULL;
@@ -3446,7 +3449,7 @@
 
     // Render
     const ImU32 col = window->Color((hovered && held) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderFrame(bb.Min, bb.Max, col);
+    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
 
     if (size.x < text_size.x || size.y < text_size.y)
         PushClipRect(ImVec4(bb.Min.x+style.FramePadding.x, bb.Min.y+style.FramePadding.y, bb.Max.x, bb.Max.y-style.FramePadding.y));        // Allow extra to draw over the horizontal padding to make it visible that text doesn't fit
@@ -4032,7 +4035,7 @@
     }
 
     ItemSize(bb);
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     // Process clicking on the slider
     if (g.ActiveId == id)
@@ -4290,7 +4293,7 @@
             scale_max = v_max;
     }
 
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     int res_w = ImMin((int)graph_size.x, values_count);
     if (plot_type == ImGuiPlotType_Lines)
@@ -4416,12 +4419,12 @@
     if (pressed)
         *v = !(*v);
 
-    RenderFrame(check_bb.Min, check_bb.Max, window->Color((held && hovered) ? ImGuiCol_CheckActive : hovered ? ImGuiCol_CheckHovered : ImGuiCol_FrameBg));
+    RenderFrame(check_bb.Min, check_bb.Max, window->Color((held && hovered) ? ImGuiCol_CheckActive : hovered ? ImGuiCol_CheckHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
     if (*v)
     {
         const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
         const float pad = check_sz < 8.0f ? 1.0f : check_sz < 13.0f ? 2.0f : 3.0f;
-        window->DrawList->AddRectFilled(check_bb.Min+ImVec2(pad,pad), check_bb.Max-ImVec2(pad,pad), window->Color(ImGuiCol_CheckMark));
+        window->DrawList->AddRectFilled(check_bb.Min+ImVec2(pad,pad), check_bb.Max-ImVec2(pad,pad), window->Color(ImGuiCol_CheckMark), style.FrameRounding);
     }
 
     if (g.LogEnabled)
@@ -5020,7 +5023,7 @@
         }
     }
     
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true);
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     const ImVec2 font_off_up = ImVec2(0.0f,window->FontSize()+1.0f);    // FIXME: those offsets are part of the style or font API
     const ImVec2 font_off_dn = ImVec2(0.0f,2.0f);
@@ -5187,8 +5190,8 @@
     const bool hovered = IsHovered(frame_bb, id);
 
     bool value_changed = false;
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
-    RenderFrame(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y), frame_bb.Max, window->Color(hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
+    RenderFrame(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y), frame_bb.Max, window->Color(hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button), true, style.FrameRounding);	// FIXME-ROUNDING
     RenderCollapseTriangle(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y) + style.FramePadding, true);
 
     if (*current_item >= 0 && *current_item < items_count)
@@ -5304,7 +5307,7 @@
 
     const bool hovered = IsHovered(bb, 0);
     const bool pressed = hovered && g.IO.MouseClicked[0];
-    RenderFrame(bb.Min, bb.Max, window->Color(col), outline_border);
+    RenderFrame(bb.Min, bb.Max, window->Color(col), outline_border, style.FrameRounding);
 
     if (hovered)
     {
@@ -6889,6 +6892,7 @@
         ImGui::SliderFloat2("WindowPadding", (float*)&style.WindowPadding, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat("WindowRounding", &style.WindowRounding, 0.0f, 16.0f, "%.0f");
         ImGui::SliderFloat2("FramePadding", (float*)&style.FramePadding, 0.0f, 20.0f, "%.0f");
+        ImGui::SliderFloat("FrameRounding", &style.FrameRounding, 0.0f, 16.0f, "%.0f");
         ImGui::SliderFloat2("ItemSpacing", (float*)&style.ItemSpacing, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat2("ItemInnerSpacing", (float*)&style.ItemInnerSpacing, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat2("TouchExtraPadding", (float*)&style.TouchExtraPadding, 0.0f, 10.0f, "%.0f");

diff --git a/imgui.cpp b/imgui.cpp
index a78912f..da66094 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -248,6 +248,7 @@
  - tooltip: move to fit within screen (e.g. when mouse cursor is right of the screen).
  - clipboard: automatically transform \n into \n\r or equivalent for higher compatibility on windows
  - portability: big-endian test/support (github issue #81)
+ - misc: rounded triangle fail to draw correctly on OpenGL3 example.
  - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
  - misc: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
  - style editor: color child window height expressed in multiple of line height.
@@ -351,6 +352,7 @@
     WindowMinSize           = ImVec2(32,32);    // Minimum window size
     WindowRounding          = 9.0f;             // Radius of window corners rounding. Set to 0.0f to have rectangular windows
     FramePadding            = ImVec2(4,3);      // Padding within a framed rectangle (used by most widgets)
+    FrameRounding           = 0.0f;             // Radius of frame corners rounding. Set to 0.0f to have rectangular frames (used by most widgets).
     ItemSpacing             = ImVec2(8,4);      // Horizontal and vertical spacing between widgets/lines
     ItemInnerSpacing        = ImVec2(4,4);      // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label)
     TouchExtraPadding       = ImVec2(0,0);      // Expand bounding box for touch-based system where touch position is not accurate enough (unnecessary for mouse inputs). Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget running. So dont grow this too much!
@@ -2830,6 +2832,7 @@
     {
     case ImGuiStyleVar_Alpha: return &g.Style.Alpha;
     case ImGuiStyleVar_WindowRounding: return &g.Style.WindowRounding;
+    case ImGuiStyleVar_FrameRounding: return &g.Style.FrameRounding;
     case ImGuiStyleVar_TreeNodeSpacing: return &g.Style.TreeNodeSpacing;
     }
     return NULL;
@@ -3446,7 +3449,7 @@
 
     // Render
     const ImU32 col = window->Color((hovered && held) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderFrame(bb.Min, bb.Max, col);
+    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
 
     if (size.x < text_size.x || size.y < text_size.y)
         PushClipRect(ImVec4(bb.Min.x+style.FramePadding.x, bb.Min.y+style.FramePadding.y, bb.Max.x, bb.Max.y-style.FramePadding.y));        // Allow extra to draw over the horizontal padding to make it visible that text doesn't fit
@@ -4032,7 +4035,7 @@
     }
 
     ItemSize(bb);
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     // Process clicking on the slider
     if (g.ActiveId == id)
@@ -4290,7 +4293,7 @@
             scale_max = v_max;
     }
 
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     int res_w = ImMin((int)graph_size.x, values_count);
     if (plot_type == ImGuiPlotType_Lines)
@@ -4416,12 +4419,12 @@
     if (pressed)
         *v = !(*v);
 
-    RenderFrame(check_bb.Min, check_bb.Max, window->Color((held && hovered) ? ImGuiCol_CheckActive : hovered ? ImGuiCol_CheckHovered : ImGuiCol_FrameBg));
+    RenderFrame(check_bb.Min, check_bb.Max, window->Color((held && hovered) ? ImGuiCol_CheckActive : hovered ? ImGuiCol_CheckHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
     if (*v)
     {
         const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
         const float pad = check_sz < 8.0f ? 1.0f : check_sz < 13.0f ? 2.0f : 3.0f;
-        window->DrawList->AddRectFilled(check_bb.Min+ImVec2(pad,pad), check_bb.Max-ImVec2(pad,pad), window->Color(ImGuiCol_CheckMark));
+        window->DrawList->AddRectFilled(check_bb.Min+ImVec2(pad,pad), check_bb.Max-ImVec2(pad,pad), window->Color(ImGuiCol_CheckMark), style.FrameRounding);
     }
 
     if (g.LogEnabled)
@@ -5020,7 +5023,7 @@
         }
     }
     
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true);
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
 
     const ImVec2 font_off_up = ImVec2(0.0f,window->FontSize()+1.0f);    // FIXME: those offsets are part of the style or font API
     const ImVec2 font_off_dn = ImVec2(0.0f,2.0f);
@@ -5187,8 +5190,8 @@
     const bool hovered = IsHovered(frame_bb, id);
 
     bool value_changed = false;
-    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg));
-    RenderFrame(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y), frame_bb.Max, window->Color(hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button));
+    RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding);
+    RenderFrame(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y), frame_bb.Max, window->Color(hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button), true, style.FrameRounding);	// FIXME-ROUNDING
     RenderCollapseTriangle(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y) + style.FramePadding, true);
 
     if (*current_item >= 0 && *current_item < items_count)
@@ -5304,7 +5307,7 @@
 
     const bool hovered = IsHovered(bb, 0);
     const bool pressed = hovered && g.IO.MouseClicked[0];
-    RenderFrame(bb.Min, bb.Max, window->Color(col), outline_border);
+    RenderFrame(bb.Min, bb.Max, window->Color(col), outline_border, style.FrameRounding);
 
     if (hovered)
     {
@@ -6889,6 +6892,7 @@
         ImGui::SliderFloat2("WindowPadding", (float*)&style.WindowPadding, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat("WindowRounding", &style.WindowRounding, 0.0f, 16.0f, "%.0f");
         ImGui::SliderFloat2("FramePadding", (float*)&style.FramePadding, 0.0f, 20.0f, "%.0f");
+        ImGui::SliderFloat("FrameRounding", &style.FrameRounding, 0.0f, 16.0f, "%.0f");
         ImGui::SliderFloat2("ItemSpacing", (float*)&style.ItemSpacing, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat2("ItemInnerSpacing", (float*)&style.ItemInnerSpacing, 0.0f, 20.0f, "%.0f");
         ImGui::SliderFloat2("TouchExtraPadding", (float*)&style.TouchExtraPadding, 0.0f, 10.0f, "%.0f");
diff --git a/imgui.h b/imgui.h
index 0eaf64b..849b0ad 100644
--- a/imgui.h
+++ b/imgui.h
@@ -422,6 +422,7 @@
     ImGuiStyleVar_WindowPadding,     // ImVec2
     ImGuiStyleVar_WindowRounding,    // float
     ImGuiStyleVar_FramePadding,      // ImVec2
+    ImGuiStyleVar_FrameRounding,     // float
     ImGuiStyleVar_ItemSpacing,       // ImVec2
     ImGuiStyleVar_ItemInnerSpacing,  // ImVec2
     ImGuiStyleVar_TreeNodeSpacing,   // float
@@ -452,6 +453,7 @@
     ImVec2      WindowMinSize;              // Minimum window size
     float       WindowRounding;             // Radius of window corners rounding. Set to 0.0f to have rectangular windows
     ImVec2      FramePadding;               // Padding within a framed rectangle (used by most widgets)
+    float       FrameRounding;              // Radius of frame corners rounding. Set to 0.0f to have rectangular frame (used by most widgets).
     ImVec2      ItemSpacing;                // Horizontal and vertical spacing between widgets/lines
     ImVec2      ItemInnerSpacing;           // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label)
     ImVec2      TouchExtraPadding;          // Expand bounding box for touch-based system where touch position is not accurate enough (unnecessary for mouse inputs). Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget running. So dont grow this too much!