CODEWITHSUNDEEP
iosimageopengl-esglreadpixels
SundayMonday
SundayMonday

Reputation: 19727

OpenGL ES - Reducing texture quality and texture size

Is it possible to "degrade" the quality of textures in OpenGL ES? By degrade I mean make the images more pixelated/blocky/blurry etc.

My goal is to reduce the size of textures to help glReadPixels run faster (transfer less bytes from VRAM to RAM).

Perhaps I can do something before calling glCopyTexImage2D such that the copied texture is lower quality (and hopefully a smaller size)?

Upvotes: 0

Views: 931

Answers (1)

Matthew Marshall
Matthew Marshall

Reputation: 5873

Render your scene to an FBO (frame buffer object) that is a smaller size than the display.

Note that reducing the size of the textures used to render your scene won't reduce the size of the data glReadPixels has to read back.

Upvotes: 1

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