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pica/swrasterizer: implement procedural texture

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wwylele 2017-04-17 10:01:45 +03:00
parent 13dd0b88de
commit ade45b5b99
9 changed files with 448 additions and 4 deletions
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10
src/common/vector_math.h
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@ -652,6 +652,16 @@ static inline decltype((X{} * int{} + X{} * int{}) / base) LerpInt(const X& begi
return (begin * (base - t) + end * t) / base;
}
// bilinear interpolation. s is for interpolating x00-x01 and x10-x11, and t is for the second
// interpolation.
template <typename X>
inline auto BilinearInterp(const X& x00, const X& x01, const X& x10, const X& x11, const float s,
const float t) {
auto y0 = Lerp(x00, x01, s);
auto y1 = Lerp(x10, x11, s);
return Lerp(y0, y1, t);
}
// Utility vector factories
template <typename T>
static inline Vec2<T> MakeVec(const T& x, const T& y) {