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Fix 0.5 pixel offset, only needed for d3d <= 9

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Defaults to 0.0f, which is correct for d3d10+ and ogl
This commit is contained in:
Sim Dietrich 2014-08-10 19:47:14 -07:00
parent 56bb993d63
commit f9a19f243a
3 changed files with 6 additions and 2 deletions
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2
examples/directx9_example/main.cpp
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@ -297,6 +297,8 @@ void InitImGui()
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
ImGui::GetStyle().PixelCenterOffset = 0.5f; // to make texels & pixels align
}
int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)

5
imgui.cpp
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@ -211,6 +211,7 @@ ImGuiStyle::ImGuiStyle()
TreeNodeSpacing = 22.0f;
ColumnsMinSpacing = 6.0f; // Minimum space between two columns
ScrollBarWidth = 16.0f;
PixelCenterOffset = 0.0f; // for <= d3d9, this should be 0.5f. for ogl & d3d10+, 0.0f is correct
Colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
Colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
@ -3355,8 +3356,8 @@ bool RadioButton(const char* label, bool active)
return false;
ImVec2 center = check_bb.GetCenter();
center.x = (float)(int)center.x + 0.5f;
center.y = (float)(int)center.y + 0.5f;
center.x = (float)(int)center.x + style.PixelCenterOffset;
center.y = (float)(int)center.y + style.PixelCenterOffset;
const float radius = check_bb.GetHeight() * 0.5f;
const bool hovered = (g.HoveredWindow == window) && (g.HoveredId == 0) && IsMouseHoveringBox(check_bb);

1
imgui.h
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@ -352,6 +352,7 @@ struct ImGuiStyle
float TreeNodeSpacing;
float ColumnsMinSpacing;
float ScrollBarWidth;
float PixelCenterOffset;
ImVec4 Colors[ImGuiCol_COUNT];
ImGuiStyle();