OpenGL ES

[noeska]

Is there an pascal/delphi unit available for opengl es

for more info on opengl es see:
http://www.khronos.org/opengles/1_X/

and:
http://www.imgtec.com/PowerVR/inside...xMBX/index.asp

A first try at converting the c headers to pascal using the jedi tool ended up in a disaster (what a suprise :roll: ).

Searching for an existing conversion also gave nothing.

Now as opengl es 1.x is a subset of opengl using some 1.5 features i could go copy and paste the relevant entries from dlgopengl. But i doubt if that would be successfull.

Before going in the hard way and convert it by hand i could use some ideas/ tips etc.

I even considered leaving pascal and go the c way, saves a lot of time for not having to do this conversion. :twisted:

[noeska]

some exampless:

typedef struct _KEGL_SURFACE_ *EGLSurface;
typedef struct _KEGL_CONTEXT_ *EGLContext;

and

#define EGL_DEFAULT_DISPLAY ((NativeDisplayType)0)
#define EGL_NO_CONTEXT ((EGLContext)0)
#define EGL_NO_DISPLAY ((EGLDisplay)0)
#define EGL_NO_SURFACE ((EGLSurface)0)

[savage]

How are the _KEGL_SURFACE_ and _KEGL_CONTEXT_ structs defined? The lines you provide look like they are pointers to structures/records.

The EGL_* defines look like C Macros to me. In Pascal you would need to explicitly define these are procedures I think.

[noeska]

this is the complete egltypes.h

/*****************************************************************************
 Name :		egltypes.h
 Date :		11/04/05
 Platform : Windows XP/Windows CE/PocketPC

 Description :
 Native egltypes.h as required by Khronos OpenGL ES egl.h

 This file is part of the PowerVR OpenGL ES SDK.

 Copyright 2000-2005 by Imagination Technologies Ltd. All rights reserved.
 Information and source code samples contained herein are
 provided "as-is", without representations or warranties, and
 are subject to change without notice. The author cannot support
 modifications or derivative works created from the sample source
 code provided. You may use, reproduce, and modify portions or
 entire sections of the sample source code for the purposes of
 creating applications. Distribution is limited to executable
 or binary portions of the sample source code unless you gain
 written permission from the author.
*****************************************************************************/
#ifndef _egltypes_h_
#define _egltypes_h_

/* Types */
typedef int EGLBoolean;
#define EGL_FALSE 0
#define EGL_TRUE  1

/* An integer of at least 32 bits */
typedef int EGLint;

/* Resources */
typedef EGLint EGLDisplay;
typedef EGLint EGLConfig;
typedef struct _KEGL_SURFACE_ *EGLSurface;
typedef struct _KEGL_CONTEXT_ *EGLContext;

/* Windowing system: Windows */
#undef UNREFERENCED_PARAMETER
#include <windows>

typedef HDC   NativeDisplayType;
typedef HWND  NativeWindowType;
typedef void *NativePixmapType;

/* May need to export on some platforms */
#define GLAPI_EXT

/* EGL and native handle values */
#define EGL_DEFAULT_DISPLAY &#40;&#40;NativeDisplayType&#41;0&#41;
#define EGL_NO_CONTEXT &#40;&#40;EGLContext&#41;0&#41;
#define EGL_NO_DISPLAY &#40;&#40;EGLDisplay&#41;0&#41;
#define EGL_NO_SURFACE &#40;&#40;EGLSurface&#41;0&#41;

#endif

[noeska]

some of the opengl es have some wierd entries in the dll:
like _eglGetDisplay@4

now i have to do something like:

function  eglGetDisplay(display_id: NativeDisplayType ): EGLDisplay; stdcall; external 'libgles_cl.dll' name '_eglGetDisplay@4';
function  eglInitialize(dpy: EGLDisplay ; major: PEGLint ; minor: PEGLint ): EGLBoolean; stdcall; external 'libgles_cl.dll' name '_eglInitialize@12'; //*major *minor

[noeska]

I finished an alpha version: http://www.noeska.net/downloads/opengles.zip

[WILL]

Very nice work!

I believe those of you that were wanting to make games for the GP2X would be most interested in this, no?

What were the other systems that required OpenGL|ES in place of a fully featured OpenGL API?

[JSoftware]

What were the other systems that required OpenGL|ES in place of a fully featured OpenGL API?

Playstation? :lol:

[noeska]

My first concern is the efika(2) (http://www.genesippc.com/).

Also opengl es 1.x is on some 'of the newer' mobile phones /pda's also.

Playstation3 also features opengl es, but not in linux.

Isn't the gpx2 2d only?

[WILL]

GP2X can do both 2D and 3D. ie. Doom/Quake have been ported onto it in the not to distant past. It just might not have as much 3D processing as on a PC or a non-portable game console. But this is what GL|ES is for, right?

btw, what are you planning on doing with the efika? Arcade machine perhaps?