# outputImageProviderFromTexture(withPixelFormat:pixelsWide:pixelsHigh:name:flipped:releaseCallback:releaseContext:colorSpace:shouldColorMatch:) Returns an image provider from an OpenGL texture. ``` func outputImageProviderFromTexture(withPixelFormat format: String!, pixelsWide width: Int, pixelsHigh height: Int, name: GLuint, flipped: Bool, releaseCallback callback: QCPlugInTextureReleaseCallback!, releaseContext context: UnsafeMutableRawPointer!, colorSpace: CGColorSpace!, shouldColorMatch colorMatch: Bool) -> Any! ``` ## Parameters `format` The pixel format of the texture. This must be compatible with the color space. `width` The width, in bytes, of the texture. `height` The height, in bytes, of the texture. `name` An OpenGL texture of type `GL_TEXTURE_RECTANGLE_EXT` that is valid on the Quartz Composer OpenGL context. Your application must make sure that the texture exists for the life cycle of the image provider. `flipped` to have Quartz Composer flip the contents of the texture vertically. `callback` The release callback. Your callback must use this type definition: ```objc typedef void (*QCPlugInTextureReleaseCallback)(CGLContextObj cgl_ctx, GLuint name, void* context); ``` If you name your callback function `MyQCPlugInTextureReleaseCallback` , you would declare it like this: ```objc void MyQCPlugInTextureReleaseCallback (CGLContextObj cgl_ctx, GLuint name, void* context); ``` Quartz Composer invokes your callback when the memory buffer is no longer needed. The callback can be called from any thread at any time `context` The context to pass to the release callback. `colorSpace` The color space of the texture. This must be compatible with the pixel format. `colorMatch` A Boolean that specifies whether Quartz Composer should color match the texture. Pass if the texture is a mask or gradient or should not be color matched for some other reason. Otherwise, pass . ## Return Value An image provider. ## Discussion You must not modify the texture until the release callback is invoked. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)