Skip transform surface when const raw image data transform into texture

[ntut-xuan]

The current step of transform raw image to texture need to transform the surface first. It may cost lot of overhead when transform it.

The issue were discovered in #73 due to the missing texture image is PNG format and it may need lot of transform-surface implementation and make it into surface. But it may consider using BMP format and reduce the transform-surface implementation, and trying to skip the transform-surface implementation to transform into texture.

If it work, create a PR to optimized it. If it not work, close the issue.

[NOOBDY]

If you encode the image data in bmp format, this would probably be trivial to implement