Index: src/core/SkPMFloat.h |
diff --git a/src/core/SkPMFloat.h b/src/core/SkPMFloat.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..fee213d8e446e997182402cb85ea4fc784140bdb |
--- /dev/null |
+++ b/src/core/SkPMFloat.h |
@@ -0,0 +1,53 @@ |
+#ifndef SkPM_DEFINED |
+#define SkPM_DEFINED |
+ |
+#include "SkTypes.h" |
+#include "SkColor.h" |
+ |
+// As usual, there are two ways to increase alignment... the MSVC way and the everyone-else way. |
+#ifdef _MSC_VER |
+ #define ALIGN(N) __declspec(align(N)) |
+#else |
+ #define ALIGN(N) __attribute__((aligned(N))) |
+#endif |
+ |
+// A pre-multiplied color in the same order as SkPMColor storing each component as a float. |
+struct ALIGN(16) SkPMFloat { |
+ float fColor[4]; |
+ |
+ float a() const { return fColor[SK_A32_SHIFT / 8]; } |
+ float r() const { return fColor[SK_R32_SHIFT / 8]; } |
+ float g() const { return fColor[SK_G32_SHIFT / 8]; } |
+ float b() const { return fColor[SK_B32_SHIFT / 8]; } |
+ |
+ void setA(float val) { fColor[SK_A32_SHIFT / 8] = val; } |
+ void setR(float val) { fColor[SK_R32_SHIFT / 8] = val; } |
+ void setG(float val) { fColor[SK_G32_SHIFT / 8] = val; } |
+ void setB(float val) { fColor[SK_B32_SHIFT / 8] = val; } |
+ |
+ void set(SkPMColor); |
+ |
+ SkPMColor get() const; // May SkASSERT(this->sane()). |
+ SkPMColor clamped() const; // Will clamp all values to [0,1], then may SkASSERT(this->sane()). |
+ |
+ bool sane() const { |
reed1
2015/02/19 22:14:49
bikeshed: isValid(), isLegal(), isClamped() ?
mtklein
2015/02/19 22:48:35
Done.
|
+ return this->a() >= 0 && this->a() <= 1 && |
+ this->r() >= 0 && this->r() <= 1 && |
reed1
2015/02/19 22:14:50
can replace the 2nd test on r() with r() <= a() an
mtklein
2015/02/19 22:48:35
Oh, nice. Done.
|
+ this->g() >= 0 && this->g() <= 1 && |
+ this->b() >= 0 && this->b() <= 1 && |
+ this->r() <= this->a() && |
+ this->g() <= this->a() && |
+ this->b() <= this->a(); |
+ } |
+}; |
+#undef ALIGN |
+ |
+#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
+ #include "../opts/SkPMFloat_SSE2.h" |
+#elif defined(__ARM_NEON__) |
+ #include "../opts/SkPMFloat_neon.h" |
+#else |
+ #include "../opts/SkPMFloat_none.h" |
+#endif |
+ |
+#endif//SkPM_DEFINED |