summaryrefslogtreecommitdiffstats
path: root/src/video_core/math.h
diff options
context:
space:
mode:
authorTony Wasserka <NeoBrainX@gmail.com>2014-08-12 20:04:28 +0200
committerTony Wasserka <NeoBrainX@gmail.com>2014-08-25 22:03:18 +0200
commit162d641a301d87d5e25ca5d677b7f8f07f29e748 (patch)
treec22ef7138a8f27b9dfd363270856cceea50fd2bf /src/video_core/math.h
parentPica/VertexShader: Fix a bug in the bitfield definitions and add the "negate" field for swizzlers. (diff)
downloadyuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar.gz
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar.bz2
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar.lz
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar.xz
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.tar.zst
yuzu-162d641a301d87d5e25ca5d677b7f8f07f29e748.zip
Diffstat (limited to 'src/video_core/math.h')
-rw-r--r--src/video_core/math.h196
1 files changed, 115 insertions, 81 deletions
diff --git a/src/video_core/math.h b/src/video_core/math.h
index 7030f2cfb..ca1fb0df2 100644
--- a/src/video_core/math.h
+++ b/src/video_core/math.h
@@ -39,6 +39,13 @@ template<typename T> class Vec2;
template<typename T> class Vec3;
template<typename T> class Vec4;
+template<typename T>
+static inline Vec2<T> MakeVec(const T& x, const T& y);
+template<typename T>
+static inline Vec3<T> MakeVec(const T& x, const T& y, const T& z);
+template<typename T>
+static inline Vec4<T> MakeVec(const T& x, const T& y, const T& z, const T& w);
+
template<typename T>
class Vec2 {
@@ -68,34 +75,34 @@ public:
a[0] = x; a[1] = y;
}
- Vec2 operator +(const Vec2& other) const
+ Vec2<decltype(T{}+T{})> operator +(const Vec2& other) const
{
- return Vec2(x+other.x, y+other.y);
+ return MakeVec(x+other.x, y+other.y);
}
void operator += (const Vec2 &other)
{
x+=other.x; y+=other.y;
}
- Vec2 operator -(const Vec2& other) const
+ Vec2<decltype(T{}-T{})> operator -(const Vec2& other) const
{
- return Vec2(x-other.x, y-other.y);
+ return MakeVec(x-other.x, y-other.y);
}
void operator -= (const Vec2& other)
{
x-=other.x; y-=other.y;
}
- Vec2 operator -() const
+ Vec2<decltype(-T{})> operator -() const
{
- return Vec2(-x,-y);
+ return MakeVec(-x,-y);
}
- Vec2 operator * (const Vec2& other) const
+ Vec2<decltype(T{}*T{})> operator * (const Vec2& other) const
{
- return Vec2(x*other.x, y*other.y);
+ return MakeVec(x*other.x, y*other.y);
}
template<typename V>
- Vec2 operator * (const V& f) const
+ Vec2<decltype(T{}*V{})> operator * (const V& f) const
{
- return Vec2(x*f,y*f);
+ return MakeVec(x*f,y*f);
}
template<typename V>
void operator *= (const V& f)
@@ -103,9 +110,9 @@ public:
x*=f; y*=f;
}
template<typename V>
- Vec2 operator / (const V& f) const
+ Vec2<decltype(T{}/V{})> operator / (const V& f) const
{
- return Vec2(x/f,y/f);
+ return MakeVec(x/f,y/f);
}
template<typename V>
void operator /= (const V& f)
@@ -152,20 +159,9 @@ public:
const T& t() const { return y; }
// swizzlers - create a subvector of specific components
- Vec2 yx() const { return Vec2(y, x); }
- Vec2 vu() const { return Vec2(y, x); }
- Vec2 ts() const { return Vec2(y, x); }
-
- // Inserters to add new elements to effectively create larger vectors containing this Vec2
- Vec3<T> InsertBeforeX(const T& value) {
- return Vec3<T>(value, x, y);
- }
- Vec3<T> InsertBeforeY(const T& value) {
- return Vec3<T>(x, value, y);
- }
- Vec3<T> Append(const T& value) {
- return Vec3<T>(x, y, value);
- }
+ const Vec2 yx() const { return Vec2(y, x); }
+ const Vec2 vu() const { return Vec2(y, x); }
+ const Vec2 ts() const { return Vec2(y, x); }
};
template<typename T, typename V>
@@ -193,7 +189,7 @@ public:
template<typename T2>
Vec3<T2> Cast() const {
- return Vec3<T2>((T2)x, (T2)y, (T2)z);
+ return MakeVec<T2>((T2)x, (T2)y, (T2)z);
}
// Only implemented for T=int and T=float
@@ -202,7 +198,7 @@ public:
static Vec3 AssignToAll(const T& f)
{
- return Vec3<T>(f, f, f);
+ return MakeVec(f, f, f);
}
void Write(T a[3])
@@ -210,34 +206,34 @@ public:
a[0] = x; a[1] = y; a[2] = z;
}
- Vec3 operator +(const Vec3 &other) const
+ Vec3<decltype(T{}+T{})> operator +(const Vec3 &other) const
{
- return Vec3(x+other.x, y+other.y, z+other.z);
+ return MakeVec(x+other.x, y+other.y, z+other.z);
}
void operator += (const Vec3 &other)
{
x+=other.x; y+=other.y; z+=other.z;
}
- Vec3 operator -(const Vec3 &other) const
+ Vec3<decltype(T{}-T{})> operator -(const Vec3 &other) const
{
- return Vec3(x-other.x, y-other.y, z-other.z);
+ return MakeVec(x-other.x, y-other.y, z-other.z);
}
void operator -= (const Vec3 &other)
{
x-=other.x; y-=other.y; z-=other.z;
}
- Vec3 operator -() const
+ Vec3<decltype(-T{})> operator -() const
{
- return Vec3(-x,-y,-z);
+ return MakeVec(-x,-y,-z);
}
- Vec3 operator * (const Vec3 &other) const
+ Vec3<decltype(T{}*T{})> operator * (const Vec3 &other) const
{
- return Vec3(x*other.x, y*other.y, z*other.z);
+ return MakeVec(x*other.x, y*other.y, z*other.z);
}
template<typename V>
- Vec3 operator * (const V& f) const
+ Vec3<decltype(T{}*V{})> operator * (const V& f) const
{
- return Vec3(x*f,y*f,z*f);
+ return MakeVec(x*f,y*f,z*f);
}
template<typename V>
void operator *= (const V& f)
@@ -245,9 +241,9 @@ public:
x*=f; y*=f; z*=f;
}
template<typename V>
- Vec3 operator / (const V& f) const
+ Vec3<decltype(T{}/V{})> operator / (const V& f) const
{
- return Vec3(x/f,y/f,z/f);
+ return MakeVec(x/f,y/f,z/f);
}
template<typename V>
void operator /= (const V& f)
@@ -310,7 +306,7 @@ public:
// swizzlers - create a subvector of specific components
// e.g. Vec2 uv() { return Vec2(x,y); }
// _DEFINE_SWIZZLER2 defines a single such function, DEFINE_SWIZZLER2 defines all of them for all component names (x<->r) and permutations (xy<->yx)
-#define _DEFINE_SWIZZLER2(a, b, name) Vec2<T> name() const { return Vec2<T>(a, b); }
+#define _DEFINE_SWIZZLER2(a, b, name) const Vec2<T> name() const { return Vec2<T>(a, b); }
#define DEFINE_SWIZZLER2(a, b, a2, b2, a3, b3, a4, b4) \
_DEFINE_SWIZZLER2(a, b, a##b); \
_DEFINE_SWIZZLER2(a, b, a2##b2); \
@@ -326,20 +322,6 @@ public:
DEFINE_SWIZZLER2(y, z, g, b, v, w, t, q);
#undef DEFINE_SWIZZLER2
#undef _DEFINE_SWIZZLER2
-
- // Inserters to add new elements to effectively create larger vectors containing this Vec2
- Vec4<T> InsertBeforeX(const T& value) {
- return Vec4<T>(value, x, y, z);
- }
- Vec4<T> InsertBeforeY(const T& value) {
- return Vec4<T>(x, value, y, z);
- }
- Vec4<T> InsertBeforeZ(const T& value) {
- return Vec4<T>(x, y, value, z);
- }
- Vec4<T> Append(const T& value) {
- return Vec4<T>(x, y, z, value);
- }
};
template<typename T, typename V>
@@ -383,34 +365,34 @@ public:
a[0] = x; a[1] = y; a[2] = z; a[3] = w;
}
- Vec4 operator +(const Vec4& other) const
+ Vec4<decltype(T{}+T{})> operator +(const Vec4& other) const
{
- return Vec4(x+other.x, y+other.y, z+other.z, w+other.w);
+ return MakeVec(x+other.x, y+other.y, z+other.z, w+other.w);
}
void operator += (const Vec4& other)
{
x+=other.x; y+=other.y; z+=other.z; w+=other.w;
}
- Vec4 operator -(const Vec4 &other) const
+ Vec4<decltype(T{}-T{})> operator -(const Vec4 &other) const
{
- return Vec4(x-other.x, y-other.y, z-other.z, w-other.w);
+ return MakeVec(x-other.x, y-other.y, z-other.z, w-other.w);
}
void operator -= (const Vec4 &other)
{
x-=other.x; y-=other.y; z-=other.z; w-=other.w;
}
- Vec4 operator -() const
+ Vec4<decltype(-T{})> operator -() const
{
- return Vec4(-x,-y,-z,-w);
+ return MakeVec(-x,-y,-z,-w);
}
- Vec4 operator * (const Vec4 &other) const
+ Vec4<decltype(T{}*T{})> operator * (const Vec4 &other) const
{
- return Vec4(x*other.x, y*other.y, z*other.z, w*other.w);
+ return MakeVec(x*other.x, y*other.y, z*other.z, w*other.w);
}
template<typename V>
- Vec4 operator * (const V& f) const
+ Vec4<decltype(T{}*V{})> operator * (const V& f) const
{
- return Vec4(x*f,y*f,z*f,w*f);
+ return MakeVec(x*f,y*f,z*f,w*f);
}
template<typename V>
void operator *= (const V& f)
@@ -418,9 +400,9 @@ public:
x*=f; y*=f; z*=f; w*=f;
}
template<typename V>
- Vec4 operator / (const V& f) const
+ Vec4<decltype(T{}/V{})> operator / (const V& f) const
{
- return Vec4(x/f,y/f,z/f,w/f);
+ return MakeVec(x/f,y/f,z/f,w/f);
}
template<typename V>
void operator /= (const V& f)
@@ -469,7 +451,7 @@ public:
// swizzlers - create a subvector of specific components
// e.g. Vec2 uv() { return Vec2(x,y); }
// _DEFINE_SWIZZLER2 defines a single such function, DEFINE_SWIZZLER2 defines all of them for all component names (x<->r) and permutations (xy<->yx)
-#define _DEFINE_SWIZZLER2(a, b, name) Vec2<T> name() const { return Vec2<T>(a, b); }
+#define _DEFINE_SWIZZLER2(a, b, name) const Vec2<T> name() const { return Vec2<T>(a, b); }
#define DEFINE_SWIZZLER2(a, b, a2, b2) \
_DEFINE_SWIZZLER2(a, b, a##b); \
_DEFINE_SWIZZLER2(a, b, a2##b2); \
@@ -485,7 +467,7 @@ public:
#undef DEFINE_SWIZZLER2
#undef _DEFINE_SWIZZLER2
-#define _DEFINE_SWIZZLER3(a, b, c, name) Vec3<T> name() const { return Vec3<T>(a, b, c); }
+#define _DEFINE_SWIZZLER3(a, b, c, name) const Vec3<T> name() const { return Vec3<T>(a, b, c); }
#define DEFINE_SWIZZLER3(a, b, c, a2, b2, c2) \
_DEFINE_SWIZZLER3(a, b, c, a##b##c); \
_DEFINE_SWIZZLER3(a, c, b, a##c##b); \
@@ -510,69 +492,121 @@ public:
template<typename T, typename V>
-Vec4<T> operator * (const V& f, const Vec4<T>& vec)
+Vec4<decltype(V{}*T{})> operator * (const V& f, const Vec4<T>& vec)
{
- return Vec4<T>(f*vec.x,f*vec.y,f*vec.z,f*vec.w);
+ return MakeVec(f*vec.x,f*vec.y,f*vec.z,f*vec.w);
}
typedef Vec4<float> Vec4f;
template<typename T>
-static inline T Dot(const Vec2<T>& a, const Vec2<T>& b)
+static inline decltype(T{}*T{}+T{}*T{}) Dot(const Vec2<T>& a, const Vec2<T>& b)
{
return a.x*b.x + a.y*b.y;
}
template<typename T>
-static inline T Dot(const Vec3<T>& a, const Vec3<T>& b)
+static inline decltype(T{}*T{}+T{}*T{}) Dot(const Vec3<T>& a, const Vec3<T>& b)
{
return a.x*b.x + a.y*b.y + a.z*b.z;
}
template<typename T>
-static inline T Dot(const Vec4<T>& a, const Vec4<T>& b)
+static inline decltype(T{}*T{}+T{}*T{}) Dot(const Vec4<T>& a, const Vec4<T>& b)
{
return a.x*b.x + a.y*b.y + a.z*b.z + a.w*b.w;
}
template<typename T>
-static inline Vec3<T> Cross(const Vec3<T>& a, const Vec3<T>& b)
+static inline Vec3<decltype(T{}*T{}-T{}*T{})> Cross(const Vec3<T>& a, const Vec3<T>& b)
{
- return Vec3<T>(a.y*b.z-a.z*b.y, a.z*b.x-a.x*b.z, a.x*b.y-a.y*b.x);
+ return MakeVec(a.y*b.z-a.z*b.y, a.z*b.x-a.x*b.z, a.x*b.y-a.y*b.x);
}
// linear interpolation via float: 0.0=begin, 1.0=end
template<typename X>
-static inline X Lerp(const X& begin, const X& end, const float t)
+static inline decltype(X{}*float{}+X{}*float{}) Lerp(const X& begin, const X& end, const float t)
{
return begin*(1.f-t) + end*t;
}
// linear interpolation via int: 0=begin, base=end
template<typename X, int base>
-static inline X LerpInt(const X& begin, const X& end, const int t)
+static inline decltype((X{}*int{}+X{}*int{}) / base) LerpInt(const X& begin, const X& end, const int t)
{
return (begin*(base-t) + end*t) / base;
}
// Utility vector factories
template<typename T>
-static inline Vec2<T> MakeVec2(const T& x, const T& y)
+static inline Vec2<T> MakeVec(const T& x, const T& y)
{
return Vec2<T>{x, y};
}
template<typename T>
-static inline Vec3<T> MakeVec3(const T& x, const T& y, const T& z)
+static inline Vec3<T> MakeVec(const T& x, const T& y, const T& z)
{
return Vec3<T>{x, y, z};
}
template<typename T>
-static inline Vec4<T> MakeVec4(const T& x, const T& y, const T& z, const T& w)
+static inline Vec4<T> MakeVec(const T& x, const T& y, const Vec2<T>& zw)
+{
+ return MakeVec(x, y, zw[0], zw[1]);
+}
+
+template<typename T>
+static inline Vec3<T> MakeVec(const Vec2<T>& xy, const T& z)
+{
+ return MakeVec(xy[0], xy[1], z);
+}
+
+template<typename T>
+static inline Vec3<T> MakeVec(const T& x, const Vec2<T>& yz)
+{
+ return MakeVec(x, yz[0], yz[1]);
+}
+
+template<typename T>
+static inline Vec4<T> MakeVec(const T& x, const T& y, const T& z, const T& w)
{
return Vec4<T>{x, y, z, w};
}
+template<typename T>
+static inline Vec4<T> MakeVec(const Vec2<T>& xy, const T& z, const T& w)
+{
+ return MakeVec(xy[0], xy[1], z, w);
+}
+
+template<typename T>
+static inline Vec4<T> MakeVec(const T& x, const Vec2<T>& yz, const T& w)
+{
+ return MakeVec(x, yz[0], yz[1], w);
+}
+
+// NOTE: This has priority over "Vec2<Vec2<T>> MakeVec(const Vec2<T>& x, const Vec2<T>& y)".
+// Even if someone wanted to use an odd object like Vec2<Vec2<T>>, the compiler would error
+// out soon enough due to misuse of the returned structure.
+template<typename T>
+static inline Vec4<T> MakeVec(const Vec2<T>& xy, const Vec2<T>& zw)
+{
+ return MakeVec(xy[0], xy[1], zw[0], zw[1]);
+}
+
+template<typename T>
+static inline Vec4<T> MakeVec(const Vec3<T>& xyz, const T& w)
+{
+ return MakeVec(xyz[0], xyz[1], xyz[2], w);
+}
+
+template<typename T>
+static inline Vec4<T> MakeVec(const T& x, const Vec2<T>& yzw)
+{
+ return MakeVec(x, yzw[0], yzw[1], yzw[2]);
+}
+
+
} // namespace