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stb_truetype: fix a division by zero (unused chain of result, but triggering debuggers). (#5139, #5075)
Amend 0cff5ac
(mislabeled as stb_textedit)
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2747a8ca40
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@ -3200,8 +3200,11 @@ static void stbtt__fill_active_edges_new(float *scanline, float *scanline_fill,
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// check if final y_crossing is blown up; no test case for this
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if (y_final > y_bottom) {
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int denom = (x2 - (x1+1));
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y_final = y_bottom;
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dy = (y_final - y_crossing ) / (x2 - (x1+1)); // if denom=0, y_final = y_crossing, so y_final <= y_bottom
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if (denom != 0) { // [DEAR IMGUI] Avoid div by zero (https://github.com/nothings/stb/issues/1316)
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dy = (y_final - y_crossing ) / denom; // if denom=0, y_final = y_crossing, so y_final <= y_bottom
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}
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}
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// in second pixel, area covered by line segment found in first pixel
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