A simple library, which makes the use of OpenGL a little bit more convenient and Julian. If you have any questions, please open an issue.
There are some tutorials and examples.
- All the different glUniform functions are wrapped and the right function is determined via multiple dispatch (works for FixedSizeArrays, Colors and Real numbers)
BuffersandTextureobjects are wrapped, with best support for arrays of FixedSizeArrays, Colors and Reals.- An Array interface for
BuffersandTextures, offering functions likepush!,getindex,setindex!, etc for GPU arrays, just like you're used to from Julia Arrays. - Shader loading is simplified and offers templated shaders and interactive editing of shaders and type/error checks.
- Some wrappers for often used functions, with embedded error handling and more Julian syntax
using ModernGL, GeometryTypes, GLAbstraction, GLFW
const GLA = GLAbstraction
window = GLFW.Window(name="Drawing polygons 5", resolution=(800,600))
GLA.set_context!(window)
vertex_shader = GLA.vert"""
#version 150
in vec2 position;
in vec3 color;
out vec3 Color;
void main()
{
Color = color;
gl_Position = vec4(position, 0.0, 1.0);
}
"""
fragment_shader = GLA.frag"""
# version 150
in vec3 Color;
out vec4 outColor;
void main()
{
outColor = vec4(Color, 1.0);
}
"""
prog = GLA.Program(vertex_shader, fragment_shader)
vertex_positions = Point{2,Float32}[(-0.5, 0.5),
( 0.5, 0.5),
( 0.5, -0.5),
(-0.5, -0.5)]
vertex_colors = Vec3f0[(1, 0, 0),
(0, 1, 0),
(0, 0, 1),
(1, 1, 1)]
elements = Face{3,UInt32}[(0,1,2),
(2,3,0)]
buffers = GLA.generate_buffers(prog, position = vertex_positions, color = vertex_colors)
vao = GLA.VertexArray(buffers, elements)
glClearColor(0, 0, 0, 1)
while !GLFW.WindowShouldClose(window)
glClear(GL_COLOR_BUFFER_BIT)
GLA.bind(prog)
GLA.bind(vao)
GLA.draw(vao)
GLA.unbind(vao) #optional in this case
GLA.unbind(prog) #optional in this case
GLFW.SwapBuffers(window)
GLFW.PollEvents()
if GLFW.GetKey(window, GLFW.KEY_ESCAPE) == GLFW.PRESS
GLFW.SetWindowShouldClose(window, true)
end
end
GLFW.DestroyWindow(window) # needed if you're running this from the REPLThanks for all the great contributions