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Add a test to make sure that after a bilerp the pixels that should remain unaffected do in fact remain unaffected.

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This commit is contained in:
Pavel Krajcevski 2013-09-06 02:02:34 -04:00
parent 3806efe6fc
commit 5ac6872dc7
1 changed files with 35 additions and 0 deletions
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35
PVRTCEncoder/test/ImageTest.cpp
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@ -53,6 +53,9 @@
#include "gtest/gtest.h"
#include "Image.h"
#include "Pixel.h"
#include "TestUtils.h"
#include <cstdlib>
TEST(Image, NonSpecificConstructor) {
PVRTCC::Pixel p;
@ -149,6 +152,38 @@ TEST(Image, BilinearUpscale) {
}
}
TEST(Image, BilinearUpscaleMaintainsPixels) {
srand(0xabd1ca7e);
const uint32 w = 4;
const uint32 h = 4;
PVRTCC::Pixel pxs[16];
for(int i = 0; i < w; i++) {
for(int j = 0; j < h; j++) {
pxs[j*w + i].R() = rand() % 256;
pxs[j*w + i].G() = rand() % 256;
pxs[j*w + i].B() = rand() % 256;
pxs[j*w + i].A() = rand() % 256;
}
}
PVRTCC::Image img(w, h, pxs);
img.BilinearUpscale(2);
EXPECT_EQ(img.GetWidth(), w << 2);
EXPECT_EQ(img.GetHeight(), h << 2);
for(uint32 i = 2; i < img.GetWidth(); i+=4) {
for(uint32 j = 2; j < img.GetHeight(); j+=4) {
PVRTCC::Pixel p = img(i, j);
uint32 idx = ((j - 2) / 4) * w + ((i-2)/4);
EXPECT_EQ(PixelPrinter(p.PackRGBA()), PixelPrinter(pxs[idx].PackRGBA()));
}
}
}
TEST(Image, BilinearUpscaleWrapped) {
PVRTCC::Pixel pxs[16];