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issue #6: make getRGBA8888Data() more readable

This commit is contained in:
Ming 2010-08-02 10:18:00 +00:00
parent 70bf71e01d
commit 062ba12b20
1 changed files with 13 additions and 5 deletions
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18
cocos2dx/platform/uphone/UIImage.cpp
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@ -188,6 +188,8 @@ UINT8* UIImage::getRGBA8888Data(void)
const TBitmap *pBitmap; const TBitmap *pBitmap;
int nW; int nW;
int nH; int nH;
UINT8 uR;
UINT8 uB;
// convert to RGBA8888 format // convert to RGBA8888 format
pBitmap = m_pBitmap->DupBitmapTo32(); pBitmap = m_pBitmap->DupBitmapTo32();
@ -203,12 +205,18 @@ UINT8* UIImage::getRGBA8888Data(void)
// alloc memory and store the bitmap data // alloc memory and store the bitmap data
pBufferRet = new UINT8[nW * nH * 4]; pBufferRet = new UINT8[nW * nH * 4];
memcpy(pBufferRet, pBitmap->GetDataPtr(), nW * nH * 4); memcpy(pBufferRet, pBitmap->GetDataPtr(), nW * nH * 4);
// convert BGRA to RGBA
for (int i = 0; i<nW * nH * 4; i+=4) // translate BGRA to RGBA
for (int i = 0; i < nW; ++i)
{ {
UINT8 temp = pBufferRet[i]; for (int j = 0; j < nH; ++j)
pBufferRet[i] = pBufferRet[i+2]; {
pBufferRet[i+2] = temp; uB = pBufferRet[i * j * 4];
uR = pBufferRet[i * j * 4 + 2];
pBufferRet[i * j * 4] = uR;
pBufferRet[i * j * 4 + 2] = uB;
}
} }
} while(0); } while(0);