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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 a238a1dcc0
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);
@ -4993,8 +4994,8 @@ void ImBitmapFont::RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& c
const float outline = (float)Info->Outline;
// Align to be pixel perfect
pos.x = (float)(int)pos.x + 0.5f;
pos.y = (float)(int)pos.y + 0.5f;
pos.x = (float)(int)pos.x + ImGui::GetStyle().PixelCenterOffset;
pos.y = (float)(int)pos.y + ImGui::GetStyle().PixelCenterOffset;
ImVec2 text_size = ImVec2(0,0);
float line_width = 0.0f;

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();