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RenderRectFilledRangeH() can't use cheap acosf() approximation for now. (#1296)

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omar 2017-08-29 15:25:05 +08:00
parent f8eef49575
commit 0ba3cadb88
1 changed files with 2 additions and 1 deletions
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imgui_draw.cpp
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@ -2337,7 +2337,8 @@ static inline float ImAcos01(float x)
{ {
if (x <= 0.0f) return IM_PI * 0.5f; if (x <= 0.0f) return IM_PI * 0.5f;
if (x >= 1.0f) return 0.0f; if (x >= 1.0f) return 0.0f;
return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, enough for what we do. return acosf(x);
//return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
} }
// FIXME: Cleanup and move code to ImDrawList. // FIXME: Cleanup and move code to ImDrawList.