patriciogonzalezvivo/glslCanvas

How to access a sampler2d

clankill3r opened this issue · 1 comments

clankill3r commented

How can I access a texture from a shader?
Or set a uniform?

My html looks like this:

<html>
<head>
	<title>Loading Shader</title>
  <script type="text/javascript" src="https://rawgit.com/patriciogonzalezvivo/glslCanvas/master/dist/GlslCanvas.js"></script>
  <style>
  body {
    margin:0px;
  }
  </style>
  
</head>
<body>
	
<canvas class="glslCanvas" data-fragment-url="shader.frag" data-textures="pic.png" width="500" height="500"></canvas>

</body>

</html>
patriciogonzalezvivo commented

There is a part of the README.md that goes through it.

if in the HTML object you do data-textures="texture.jpg"
Then in the shader will be accesible as:

    uniform sampler2D u_tex0;