Merge Filament's math library
This math library was derived from Android's and is API compatible.
It adds new useful types (quat and half) as well as many missing
functions and optimizations.
The half type (fp16) is going to be used for HDR/color management.
Test: mat_test, quat_test, half_test and vec_test
Change-Id: I4c61efb085d6aa2cf5b43cdd194719b3e855aa9b
diff --git a/include/ui/vec4.h b/include/ui/vec4.h
index e03d331..1281aa4 100644
--- a/include/ui/vec4.h
+++ b/include/ui/vec4.h
@@ -14,24 +14,27 @@
* limitations under the License.
*/
-#ifndef UI_VEC4_H
-#define UI_VEC4_H
+#ifndef UI_VEC4_H_
+#define UI_VEC4_H_
+#include <ui/vec3.h>
+#include <ui/half.h>
#include <stdint.h>
#include <sys/types.h>
-#include <ui/vec3.h>
namespace android {
// -------------------------------------------------------------------------------------
+namespace details {
+
template <typename T>
-class tvec4 : public TVecProductOperators<tvec4, T>,
- public TVecAddOperators<tvec4, T>,
- public TVecUnaryOperators<tvec4, T>,
- public TVecComparisonOperators<tvec4, T>,
- public TVecFunctions<tvec4, T>
-{
+class TVec4 : public TVecProductOperators<TVec4, T>,
+ public TVecAddOperators<TVec4, T>,
+ public TVecUnaryOperators<TVec4, T>,
+ public TVecComparisonOperators<TVec4, T>,
+ public TVecFunctions<TVec4, T>,
+ public TVecDebug<TVec4, T> {
public:
enum no_init { NO_INIT };
typedef T value_type;
@@ -43,76 +46,80 @@
struct { T x, y, z, w; };
struct { T s, t, p, q; };
struct { T r, g, b, a; };
- Impersonator< tvec2<T> > xy;
- Impersonator< tvec2<T> > st;
- Impersonator< tvec2<T> > rg;
- Impersonator< tvec3<T> > xyz;
- Impersonator< tvec3<T> > stp;
- Impersonator< tvec3<T> > rgb;
+ TVec2<T> xy;
+ TVec2<T> st;
+ TVec2<T> rg;
+ TVec3<T> xyz;
+ TVec3<T> stp;
+ TVec3<T> rgb;
};
- enum { SIZE = 4 };
- inline static size_type size() { return SIZE; }
+ static constexpr size_t SIZE = 4;
+ inline constexpr size_type size() const { return SIZE; }
// array access
- inline T const& operator [] (size_t i) const { return (&x)[i]; }
- inline T& operator [] (size_t i) { return (&x)[i]; }
+ inline constexpr T const& operator[](size_t i) const {
+#if __cplusplus >= 201402L
+ // only possible in C++0x14 with constexpr
+ assert(i < SIZE);
+#endif
+ return (&x)[i];
+ }
+
+ inline T& operator[](size_t i) {
+ assert(i < SIZE);
+ return (&x)[i];
+ }
// -----------------------------------------------------------------------
- // we don't provide copy-ctor and operator= on purpose
- // because we want the compiler generated versions
+ // we want the compiler generated versions for these...
+ TVec4(const TVec4&) = default;
+ ~TVec4() = default;
+ TVec4& operator = (const TVec4&) = default;
// constructors
// leaves object uninitialized. use with caution.
- explicit tvec4(no_init) { }
+ explicit
+ constexpr TVec4(no_init) { }
// default constructor
- tvec4() : x(0), y(0), z(0), w(0) { }
+ constexpr TVec4() : x(0), y(0), z(0), w(0) { }
// handles implicit conversion to a tvec4. must not be explicit.
- template<typename A>
- tvec4(A v) : x(v), y(v), z(v), w(v) { }
+ template<typename A, typename = typename std::enable_if<std::is_arithmetic<A>::value >::type>
+ constexpr TVec4(A v) : x(v), y(v), z(v), w(v) { }
template<typename A, typename B, typename C, typename D>
- tvec4(A x, B y, C z, D w) : x(x), y(y), z(z), w(w) { }
+ constexpr TVec4(A x, B y, C z, D w) : x(x), y(y), z(z), w(w) { }
template<typename A, typename B, typename C>
- tvec4(const tvec2<A>& v, B z, C w) : x(v.x), y(v.y), z(z), w(w) { }
+ constexpr TVec4(const TVec2<A>& v, B z, C w) : x(v.x), y(v.y), z(z), w(w) { }
template<typename A, typename B>
- tvec4(const tvec3<A>& v, B w) : x(v.x), y(v.y), z(v.z), w(w) { }
+ constexpr TVec4(const TVec3<A>& v, B w) : x(v.x), y(v.y), z(v.z), w(w) { }
template<typename A>
- explicit tvec4(const tvec4<A>& v) : x(v.x), y(v.y), z(v.z), w(v.w) { }
-
- template<typename A>
- tvec4(const Impersonator< tvec4<A> >& v)
- : x(((const tvec4<A>&)v).x),
- y(((const tvec4<A>&)v).y),
- z(((const tvec4<A>&)v).z),
- w(((const tvec4<A>&)v).w) { }
-
- template<typename A, typename B>
- tvec4(const Impersonator< tvec3<A> >& v, B w)
- : x(((const tvec3<A>&)v).x),
- y(((const tvec3<A>&)v).y),
- z(((const tvec3<A>&)v).z),
- w(w) { }
-
- template<typename A, typename B, typename C>
- tvec4(const Impersonator< tvec2<A> >& v, B z, C w)
- : x(((const tvec2<A>&)v).x),
- y(((const tvec2<A>&)v).y),
- z(z),
- w(w) { }
+ explicit
+ constexpr TVec4(const TVec4<A>& v) : x(v.x), y(v.y), z(v.z), w(v.w) { }
};
-// ----------------------------------------------------------------------------------------
-
-typedef tvec4<float> vec4;
+} // namespace details
// ----------------------------------------------------------------------------------------
-}; // namespace android
-#endif /* UI_VEC4_H */
+typedef details::TVec4<double> double4;
+typedef details::TVec4<float> float4;
+typedef details::TVec4<float> vec4;
+typedef details::TVec4<half> half4;
+typedef details::TVec4<int32_t> int4;
+typedef details::TVec4<uint32_t> uint4;
+typedef details::TVec4<int16_t> short4;
+typedef details::TVec4<uint16_t> ushort4;
+typedef details::TVec4<int8_t> byte4;
+typedef details::TVec4<uint8_t> ubyte4;
+
+// ----------------------------------------------------------------------------------------
+} // namespace android
+
+#endif // UI_VEC4_H_