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-rw-r--r--core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp16
1 files changed, 6 insertions, 10 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 43ce995f05..4ad6f81d5e 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -319,7 +319,7 @@ FX_BOOL _GetScanlineIntersect(int y,
return FALSE;
}
}
- x = x1 + FXSYS_MulDiv(x2 - x1, y - y1, y2 - y1);
+ x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1));
return TRUE;
}
static void DrawGouraud(CFX_DIBitmap* pBitmap,
@@ -355,15 +355,11 @@ static void DrawGouraud(CFX_DIBitmap* pBitmap,
if (!bIntersect) {
continue;
}
- r[nIntersects] =
- vertex1.r + FXSYS_MulDiv(vertex2.r - vertex1.r, y - vertex1.y,
- vertex2.y - vertex1.y);
- g[nIntersects] =
- vertex1.g + FXSYS_MulDiv(vertex2.g - vertex1.g, y - vertex1.y,
- vertex2.y - vertex1.y);
- b[nIntersects] =
- vertex1.b + FXSYS_MulDiv(vertex2.b - vertex1.b, y - vertex1.y,
- vertex2.y - vertex1.y);
+
+ FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.y);
+ r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist);
+ g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist);
+ b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist);
nIntersects++;
}
if (nIntersects != 2) {