1, bmp格式的读取什么的看cximage这个open source的项目最好了
http://www.codeproject.com/KB/graphics/cximage.aspx
有源代码
2,不太喜欢把整个库引入?
那可以摘抄一部分进去。
bmp的pitch计算:当然可以把32和4合并,但是这样会比较给人混淆,所以这里依旧是/32)*4
3,bmp中cpu端读取数据,比如从bmp获取heightmap。
有mspaint打开一个bmp图,左下是内存的开始点(0,0)点,右上是(1,1)点。
x方向是右,y方向是上。
而在gpu中sample的时候(0,0)点是左上,(1,1)点是右下,必要的情况下要做一些处理来对应好。
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