How to load a .pvr texture?

1

Hi,

I am making an iOS app and have converted my .png textures to .pvr to take advantage of the memory savings of .pvr.

How can i load them into a cinder Texture class?

I get a exception when i try to do it the way i do for .png files…Texture::create/loadImage/loadAsset

2

To my knowledge there isn’t native support in Cinder for pvr surfaces. There is however other sources to allow for the decompress of the pvr, here for instance.

3

there is this enum…

GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG

used in …

void TextureBase::getInternalFormatInfo( GLint internalFormat, GLenum *outDataFormat, GLenum *outDataType, bool *outAlpha, bool *outCompressed, bool *outSrgb )

Which i think means Cinder can detect the internal format of a .pvr?

How much work would it be to have Cinder load .pvr files? Considering the great work being done on the Android/Linux branch of Cinder, optimised textures for mobile would a very appealing feature.

4

Hey, thanks for this, will look into cocos2d-x codebase to see if there is anything i can use. Would be cool if Cinder supported this though as its a recommended by Apple.

5

I actually didn’t realize that the link i submitted had a dead link to the sample code of that. You could probably try here, an Apple PVR Texture Loader sample. They should have a sliver of code that should help with the loading. If I get a sec this weekend, I’ll see how hard it would be to integrate it.

6

Oh great, i will have a look. It would be great if after loading the pvr texture i could create a Cinder texture from it. Will play around with this and report back.