Codea GLSL is it LuaGL or moonGL?

Questions
1

I’ve been wanting to put the right GLSL software on my laptop because I didn’t see a feature were you can edit the shader through air code??

2

Codea uses GLSL. You can write shaders through Air Code but you’ll have to inline them in your Lua code as multi-line strings. Something like:

-- InlineShader

function setup()
    local vert = [[
    uniform mat4 modelViewProjection;

    attribute vec4 position;
    attribute vec4 color;
    attribute vec2 texCoord;
    
    varying lowp vec4 vColor;
    varying highp vec2 vTexCoord;
    
    void main()
    {
        vColor = color;
        vTexCoord = texCoord;
        gl_Position = modelViewProjection * position;
    }
    ]]
    local frag = [[
    precision highp float;
    uniform lowp sampler2D texture;
    varying lowp vec4 vColor;
    varying highp vec2 vTexCoord;
    
    void main()
    {
        lowp vec4 col = texture2D( texture, vTexCoord ) * vColor;    
        gl_FragColor = vec4( (1.0 - col.rgb) * col.a, col.a );
    }    
    ]]
    
    local inlineShader = shader(vert, frag)
    
    inlineShader.texture = readImage(asset.builtin.Planet_Cute.Gem_Green)
    
    myMesh = mesh()
    myMesh:addRect(0, 0, 200, 300)
    myMesh.shader = inlineShader
end

-- This function gets called once every frame
function draw()
    -- This sets a dark background color 
    background(40, 40, 50)

    translate(WIDTH/2, HEIGHT/2)
    
    myMesh:draw()
end
1 Like
3

Thank you this is a big help.:+1::+1::+1: