Library containing 20+ graphics primitives (line, box, circle, polygon,...) for SDL2.
Email aschiffler at ferzkopp dot net to contact the author or check author's homepage at http://www.ferzkopp.net for the most up-to-date contact information.
This library is licenced under the same terms as the zlib License.
The SDL2_gfx library provides the basic drawing functions such as lines, circles or polygons provided by SDL_gfx on SDL2 against renderers of SDL2.
The current components of the SDL2_gfx library are:
- Graphic Primitives (SDL2_gfxPrimitives.h, SDL2_gfxPrimitives.c)
- Surface Rotozoomer (SDL2_rotozoom.h, SDL2_rotozoom.c)
- Framerate control (SDL2_framerate.h, SDL2_framerate.c)
- MMX image filters (SDL2_imageFilter.h, SDL2_imageFilter.c)
- Build-in 8x8 Font (SDL2_gfxPrimitives_font.h)
Note that SDL2_gfx is compatible with SDL version 2.0 (not SDL 1.2).
Open the SDL2_gfx.sln solution file with VS2022, right click on the solution and choose 'Rebuild'.
The SDL folder must be placed in a directory alongside SDL2_gfx and build in the same configuration, i.e. Debug or Release, beforehand so the referenced SDL2.lib file can be found.
TBD
TBD
Do not define USE_MMX precompiler flag on non-MMX platform such as ARM as well as x64.
Several test programs for the libraries functions can be found in the Tests folder.
See the source in the Tests/*.c files for some sample code and implementation hints.
Test code may require the SDL2_gfx library to be previously compiled and installed.
Refer to the Doxygen-generated API documentation found in the Docs/html folder as well as the test programs.
- Sun, Feb 11, 2018 16:55:00 PM
- version rev to 1.0.4
- fix int overflow in ellipseRGBA for large radii (thanks for reporting David)
- fix aaline wrong direction hline bug (thanks Andre)
- fix off-by-1 error in rotateSurface90Degrees (thanks Austin)
- Mon, Feb 20, 2017 9:04:29 PM
- version rev to 1.0.3
- updates to VS solution
- update README for VS2015
- fix to rotozoomSurfaceSizeTrig (thanks hydren)
- fix for special case of roundedBoxRGBA (thanks LukeMS)
- Thu, Dec 10, 2015 8:11:26 AM
- added XCode.zip (thanks Matthias for contributing)
- Sun, Jul 13, 2014 9:21:00 AM
- added TestFramerate
- Fri, Jul 11, 2014 7:33:12 PM
- rewrote thick line algorithm using polygon drawing (much less code and faster than original Murphy-Bresenham algorithm)
- update TestThickLine accuracy test in TestGfx
- update file headers Fri, Jul 04, 2014 4:00:21 PM
- rewrote ellipse algorithm used by non-AA line/filled circle/ellipse functions: integer midpoint algorithm with 4x overscan for visual accuracy
- fix bugs in TestGfx
- add screenshot image
- Sun, Jun 15, 2014 3:12:31 PM
- fixed roundedBox by rewriting algorithm and base it on filledCircle
- fixed textured polygon algorithm
- updated testgfx extensively (visual accuracy tests, updated tests for textured polygon)
- updated README
- Mon, Jun 09, 2014 8:48:50 AM
- removed VS2010 solution files; updated VS2012 solution files for SDL2 updates
- Mon, Jun 02, 2014 7:36:24 AM
- add patch for pkg-config support (thanks Sylvain)
- update tests to use SDLTest library
- fix commandline parsing in testgfx
- Mon, May 12, 2014 7:29:24 AM
- fixed BoxRGBA size-off-by-1 error (thanks Stefan for reporting)
- Sun, Feb 02, 2014 12:00:00 PM
- fixed and optimized rotateSurface90Degrees
- updated testrotozoom to allow specification of test range
- Sun, Nov 03, 2013 10:11:16 AM
- updated testgfx program for benchmarking primitive rendering performance
- updated test programs based on VS warnings
- fixed VS2012 solution for Release build
- Mon, Oct 28, 2013 8:00:05 AM
- bugfix to _aaline special cases
- added image filter functions
- added to documentation
- updated readme and changelog
- updated solutions for VS2010 and VS2012
- Tue, Sep 04, 2012 8:27:44 AM
- initial release of development version (partially finished)