a rotating cube (#3)

public/shaders/triangle/frag.glsl

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+#version 300 es
+
+// fragment shaders don't have a default precision so we need
+// to pick one. highp is a good default. It means "high precision"
+precision highp float;
+
+// we need to declare an output for the fragment shader
+out vec4 outColor;
+
+void main() {
+  // Just set the output to a constant redish-purple
+  outColor = vec4(1, 0, 0.5, 1);
+}

public/shaders/triangle/vertex.glsl

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+#version 300 es
+
+// an attribute is an input (in) to a vertex shader.
+// It will receive data from a buffer
+in vec3 position;
+
+// uniforms
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+// all shaders have a main function
+void main() {
+
+  // gl_Position is a special variable a vertex shader
+  // is responsible for setting
+  gl_Position = projection * view * model * vec4(position, 1.0);
+}