(obtained and maintained through www.delphigl.com)
-diff --git a/dglOpenGL.html b/dglOpenGL.html deleted file mode 100644 index e9def88..0000000 --- a/dglOpenGL.html +++ /dev/null @@ -1,185 +0,0 @@ - - -
-(obtained and maintained through www.delphigl.com)
-Description
- How to use
- Support
- Credits
- Copyright
This is the readme for the OpenGL-Headers for Delphi/FreePascal that has been developed by DGL's OpenGL2.0-Portteam. Please read carefully through this file before using the header to avoid common problems and faults. - - The changelog is included in the source file itself. -
- -OpenGL-Header is for Borland Delphi 4 and above (tested with Delphi 7) and FreePascal.
- Containts the translations of glext.h, gl_1_1.h, glu.h and weglext.h.
- It also contains some helperfunctions that were inspired by those found in Mike Lischke's OpenGL12.pas.
Before you can use any of the gl-functions contained in the header, you'll have to call InitOpenGL to initialize the functionpointers. In your app it should look something like that :
- --procedure MyGLInit; -begin - InitOpenGL; // Don't forget, or first gl-Call will result in an access violation! - MyDC := GetDC(...); - MyRC := CreateRenderingContext(...); - ActivateRenderingContext(MyDC, MyRC); // Necessary, will also read some extension - ... -end;-
After doing the above initialisation, you're ready to use all OpenGL-Functions and extensions your card supports. And also don't forget to release your context properly when exiting :
--procedure MyDeInit; -begin - DeactivateRenderingContext; // Deactivates the current context - wglDeleteContext(myRC); - ReleaseDC(Handle, myDC); -end;-
As of OpenGL version 4.4, the header offers an additional way of creating a rendercontext, that allows for setting the desired OpenGL version and (if applicable) wether to create a forward compatible context (see OpenGL man pages on what that means) : -
-procedure MyGLInit; -begin - DC := GetDC(...); - RC := CreateRenderingContextVersion(DC, [opDoubleBuffered], 4, 2, True, 32, 24, 8, 0, 0, 0); // Creates an OpenGL 4.2 forward-compatible context - InitOpenGL; // Don't forget, or first gl-Call will result in an access violation! - ... -end;-Only use this method of creating a rendering context if you're sure what you're doing. Trying to create a versioned rendering context that's not supported by the target OpenGL implementation may fail! - - -
If you have problems, want to ask a question or think you may have encountered a bug in the header, please feel free to use the support-threads in our forums :
- English support
- German support
Sascha Willems (http://www.delphigl.de)
- Steffen Xonna (Lossy eX, http://www.dev-center.de)
-
Andrey Gruzdev for the Mac OS X patch for XE2 / FPC
- Lars Middendorf
-Martin Waldegger (Mars)
- Nico Michaelis (Delphic) for the Linux version of the header (see here)
- Benjamin Rosseaux (BeRo) for expanding the header for use with Free Pascal
- And thanks to all who helps us to make the header better
The contents of this file are used with permission, subject to
- the Mozilla Public License Version 1.1 (the "License"); you may
- not use this file except in compliance with the License. You may
- obtain a copy of the License at
- http://www.mozilla.org/MPL/MPL-1.1.html
Software distributed under the License is distributed on an
- "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.