update on boundary patches
git-svn-id: http://skia.googlecode.com/svn/trunk@409 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleAnimator.cpp b/samplecode/SampleAnimator.cpp
index 2909ebc..4ba8872 100644
--- a/samplecode/SampleAnimator.cpp
+++ b/samplecode/SampleAnimator.cpp
@@ -5,6 +5,50 @@
#include "SkAnimator.h"
#include "SkStream.h"
+#include "SkColorPriv.h"
+static inline void Filter_32_opaque_portable(unsigned x, unsigned y,
+ SkPMColor a00, SkPMColor a01,
+ SkPMColor a10, SkPMColor a11,
+ SkPMColor* dstColor) {
+ SkASSERT((unsigned)x <= 0xF);
+ SkASSERT((unsigned)y <= 0xF);
+
+ int xy = x * y;
+ uint32_t mask = gMask_00FF00FF; //0xFF00FF;
+
+ int scale = 256 - 16*y - 16*x + xy;
+ uint32_t lo = (a00 & mask) * scale;
+ uint32_t hi = ((a00 >> 8) & mask) * scale;
+
+ scale = 16*x - xy;
+ lo += (a01 & mask) * scale;
+ hi += ((a01 >> 8) & mask) * scale;
+
+ scale = 16*y - xy;
+ lo += (a10 & mask) * scale;
+ hi += ((a10 >> 8) & mask) * scale;
+
+ lo += (a11 & mask) * xy;
+ hi += ((a11 >> 8) & mask) * xy;
+
+ *dstColor = ((lo >> 8) & mask) | (hi & ~mask);
+}
+
+static void test_filter() {
+ for (int r = 0; r <= 0xFF; r++) {
+ SkPMColor c = SkPackARGB32(0xFF, r, r, r);
+ for (int y = 0; y <= 0xF; y++) {
+ for (int x = 0; x <= 0xF; x++) {
+ SkPMColor dst;
+ Filter_32_opaque_portable(x, y, c, c, c, c, &dst);
+ SkASSERT(SkGetPackedA32(dst) == 255);
+ }
+ }
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
class SkAnimatorView : public SkView {
public:
SkAnimatorView();
@@ -30,6 +74,7 @@
};
SkAnimatorView::SkAnimatorView() : fAnimator(NULL) {
+ test_filter();
}
SkAnimatorView::~SkAnimatorView() {