thorvg: Update to 0.14.9

Fixes #96491.

Update fix for #96262 to a simple revert of the problematic commit,
as the upstream fix is still being debated and caused other issues.

Also include fix for upstream regression 2715 added in 0.14.9.

3 files changed, 12 insertions, 7 deletions

diff --git a/thirdparty/thorvg/src/common/tvgLines.cpp b/thirdparty/thorvg/src/common/tvgLines.cpp
index 49d992f127..9d704900a5 100644
--- a/thirdparty/thorvg/src/common/tvgLines.cpp
+++ b/thirdparty/thorvg/src/common/tvgLines.cpp
@@ -79,7 +79,7 @@ float _bezAt(const Bezier& bz, float at, float length, LengthFunc lineLengthFunc
         Bezier left;
         bezSplitLeft(right, t, left);
         length = _bezLength(left, lineLengthFunc);
-        if (fabsf(length - at) < BEZIER_EPSILON || fabsf(smallest - biggest) < 1e-3f) {
+        if (fabsf(length - at) < BEZIER_EPSILON || fabsf(smallest - biggest) < BEZIER_EPSILON) {
             break;
         }
         if (length < at) {
diff --git a/thirdparty/thorvg/src/common/tvgMath.cpp b/thirdparty/thorvg/src/common/tvgMath.cpp
index 0254cce9b8..c03b54e5f8 100644
--- a/thirdparty/thorvg/src/common/tvgMath.cpp
+++ b/thirdparty/thorvg/src/common/tvgMath.cpp
@@ -43,9 +43,8 @@ bool mathInverse(const Matrix* m, Matrix* out)
                m->e12 * (m->e21 * m->e33 - m->e23 * m->e31) +
                m->e13 * (m->e21 * m->e32 - m->e22 * m->e31);
 
-    if (mathZero(det)) return false;
-
-    auto invDet = 1 / det;
+    auto invDet = 1.0f / det;
+    if (std::isinf(invDet)) return false;
 
     out->e11 = (m->e22 * m->e33 - m->e32 * m->e23) * invDet;
     out->e12 = (m->e13 * m->e32 - m->e12 * m->e33) * invDet;
@@ -137,7 +136,6 @@ Point operator*(const Point& pt, const Matrix& m)
 uint8_t mathLerp(const uint8_t &start, const uint8_t &end, float t)
 {
     auto result = static_cast<int>(start + (end - start) * t);
-    if (result > 255) result = 255;
-    else if (result < 0) result = 0;
+    mathClamp(result, 0, 255);
     return static_cast<uint8_t>(result);
 }
diff --git a/thirdparty/thorvg/src/common/tvgMath.h b/thirdparty/thorvg/src/common/tvgMath.h
index df39e3b9af..50786754a1 100644
--- a/thirdparty/thorvg/src/common/tvgMath.h
+++ b/thirdparty/thorvg/src/common/tvgMath.h
@@ -26,7 +26,7 @@
  #define _USE_MATH_DEFINES
 
 #include <float.h>
-#include <math.h>
+#include <cmath>
 #include "tvgCommon.h"
 
 #define MATH_PI  3.14159265358979323846f
@@ -68,6 +68,13 @@ static inline bool mathEqual(float a, float b)
 }
 
 
+template <typename T>
+static inline void mathClamp(T& v, const T& min, const T& max)
+{
+    if (v < min) v = min;
+    else if (v > max) v = max;
+}
+
 /************************************************************************/
 /* Matrix functions                                                     */
 /************************************************************************/