Hi, if you feel adventurous, you can try to use my OpenGL packages for this. In a few days, this might even be a pleasant experience!
Here is how you would do this, right now: https://gist.github.com/SimonDanisch/98aee37ddb76279cf774 still very messy, but this will ultimately be reduced to something like: imgdata = texture([Vector4(0f0) for x=1:w, y=1:h]) gldisplay(imgdata) #when you want to update: imgdata[1:end,1:end] = [Vector4(float32(x/w), float32(y/h), 0f0, 1f0) for x=1:w, y=1:h] *These are the packages you need( I hope)* Pkg.add("Meshes") Pkg.add("Images") Pkg.add("ImmutableArrays") Pkg.add("React") Pkg.add("GLFW") Pkg.clone("https://github.com/SimonDanisch/GLUtil.jl.git";) Pkg.clone("https://github.com/SimonDanisch/ModernGL.jl.git";) Pkg.clone("https://github.com/SimonDanisch/GLWindow.jl.git";) If you need ultimate performance and feel even more adventurous, you can try to implement your code in the shader. Just change the shader to: const fsh = """ in vec2 uv; uniform sampler2D image; uniform float customparam1; // if you need attributes from julia, put them here uniform vec3 customparam2; // you can simply upload them like the texture in the render object out vec4 fragment_color; void main() { fragment_color = vec4(uv, 0, 1); //uv is already x/w, y/h } """ You upload the custom params like this: const fullscreenquad = RenderObject( [ :position => GLBuffer(GLfloat[-1,-1, -1,1, 1,1, 1,1, 1,-1, -1,-1], 2), :image => image, :customparm1 => 1.0f0, ], GLProgram(vsh, fsh, "vertexshader", "fragmentshader"))
