snowflake notes.txt

3D游戏程序设计入门14章源码-雪景系统

The snowflake.dds was created by loading a plain white bitmap image "block.bmp"
into the DX Tex tool.  Then we loaded snowball.bmp into its alpha channel.  This
results the snow flake (provided alpha blending is enabled) to be a round white ball.
The black image border will not be displayed.