What GLSL Variables (uniforms) I supplied by Babylon.js

[startec]

I am basically asking the Babylon.js equivalent of this:

http://stackoverflow.com/questions/15663859/threejs-predefined-shader-attributes-uniforms/15664900#15664900

 

In the tutorials I see that there are some uniforms supplied from the application code  (like uniforms and view matrices) is there a place somewhere where the things that are provided automatically are documented?

[GameMonetize]

yes sir:)

 

http://blogs.msdn.com/b/eternalcoding/archive/2014/04/17/learning-shaders-create-your-own-shaders-with-babylon-js.aspx

[startec]

Thanks for the prompt reply. I am really looking forward to working with Babylon.js!

[SpaceToast]

Dead link. Has this been added to the documentation? I wasn't able to find it.

If not, maybe someone wouldn't mind pasting the relevent information into this thread for posterity's sake?

[NasimiAsl]

witch link?

[SpaceToast]

Kosh's link. Based on the CYOS examples, I can verify that the following are available:

// Attributes
attribute vec3 position; //vertex x,y,z
attribute vec3 normal; //normal x,y,z
attribute vec2 uv; //uv (texture map) 2d coordinates

// Uniforms
uniform mat4 world; //convert from model space to world space
uniform mat4 view; //convert world space to camera-relative space
uniform mat4 projection; //flatten camera space to frame view
uniform mat4 worldView; //world and view, pre-multiplied for you
uniform mat4 worldViewProjection; //world, view & projection pre-multiplied
uniform sampler2D textureSampler; //texture data
uniform vec3 cameraPosition; //camera x,y,z
uniform float time; //time

Are there any predefined shader attributes or uniforms that I'm missing?

Edited January 2, 2018 by SpaceToast
Edited with more uniforms, from digging through built-in shaders

[SpaceToast]

(Edited out into its own post, because, messiness.) A further discovery I'd love to have verified: It appears that the uniforms above do not need to be declared when creating a shaderMaterial -- Babylon.js supplies them for you. So rather than declaring:

var shaderMaterial = new BABYLON.ShaderMaterial("shader", scene,
   {vertex: "custom", fragment: "custom"},
   {attributes: ["position", "normal", "uv"],
   uniforms: ["world", "worldView", "worldViewProjection", "view", "projection"]}
   );

You can omit the attributes section, unless supplying your own custom data to the shader:

var shaderMaterial = new BABYLON.ShaderMaterial("shader", scene,
   {vertex: "custom", fragment: "custom"},
   {attributes: ["position", "normal", "uv"],
   uniforms: ["capybaras"]}
   );