stefandd / pony-gl

Pony interface to OpenGL

Pony GL

Attempt to convert api/GL/glcorearb.h definitions to Pony.

Version used: b9e1d1a1b37bb064a6d0e3fceffa8aeab5713a38.

Warning: experimental and un-tested, suggestions and pull-requests are welcome.

Warning: only tested on Linux, GLlibs.pony might have to be improved to support other platforms.

Usage

Add this repository as a submodule to your application:

git submodule add [email protected]:xpac27/pony-gl.git

Include this package in your Pony application:

use "pony-gl/Gl"

Start calling OpenGL methods from your Pony application:

env.out.print("GL version: " + String.from_cstring(Gl.glGetString(GLVersion())))

Or use provided helpers:

env.out.print("GL version: " + GlHelper.glGetString(GLVersion()))

You might want to using this package together with GLFW3.

Rules applied during conversion

Types

Names are preserved and mapped to Pony types.

• GLbitfield is U32
• GLboolean is U32
• GLbyte is I8
• GLchar is U8
• GLdouble is F64
• GLenum is U32
• GLfloat is F32
• GLint is I32
• GLint64 is I64
• GLint64EXT is I64
• GLintptr is ISize
• GLshort is I16
• GLsizei is I32
• GLsizeiptr is ISize
• GLubyte is U8
• GLuint is U32
• GLuint64 is U64
• GLuint64EXT is U64
• GLushort is U16

Defines

Names are converted to multicase (GL_VERSION becomes GLVersion). Using primitives of type GLbitfield except for GLTrue and GLFalse that use GLboolean.

The following defines have been renamed because they confilct with the type names.

• GLByte to GLByteType
• GLDouble to GLDoubleType
• GLFloat to GLFloatType
• GLInt to GLIntType
• GLShort to GLShortType

Functions

Pointers are treated in the following way:

• T* arguments are replaced by Pointer[T]
• T** arguments are replaced by Pointer[Pointer[T]]

Names are preserved but scopped inside a Gl primitive (glGetString becomes Gl.glGetString).