cl-pixman

# cl-pixman
`cl-pixman` is a Common Lisp wrapper for [pixman](http://pixman.org) written
on CFFI. Pixman is a portable library for low-level pixel manipulation.  

I wrote this wrapper to have an alternative to SDL2 blitting for low-level
pixel operation. It directly uses CFFI pointers to avoid.
Supported API is minimal (only `pixman_image_*` API is partially implemented)
so feel free to contribute.  

It is licensed under the LLGPL.

## Installation
If you are using [quicklisp](http://www.quicklisp.org/beta/):  
```bash
cd <your quicklisp directory>/local-projects/  
git clone <me>  
```
Then you can just
```
(ql:quickload "pixman")
```
in your REPL.  

You'll need a `pixman` shared object accessible to your Lisp at runtime,
if you are using GNU, you can use your distro package.  

### Tested platforms
* SBCL 1.3.19 on GNU/Linux on amd64.
* CCL 1.11-r16635 on macOS 10.12.5 on amd64 through virtual machine.
* CCL 1.11-r16635 on Windows 7 on amd64 (pixman.dll built from VS 2017).
* LispWorks® 6.1 Personal Edition x86 on GNU/Linux on amd64.


### TODO list
* 32bits functions and structures
* Floating point matrices
* Image accessors callbacks and indexed images
* pixman_filter_create_separable_convolution, pixman_image_fill_rectangles, pixman_image_fill_boxes
* Glyphs
* Trapezoids
* Examples and tests
* Simple fixed-point computations?


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