diff --git a/src/renderer/webgl/typedefs/WebGLPipelineAttributesConfig.js b/src/renderer/webgl/typedefs/WebGLPipelineAttributesConfig.js
new file mode 100644
index 000000000..7ba215298
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+++ b/src/renderer/webgl/typedefs/WebGLPipelineAttributesConfig.js
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+/**
+ * @typedef {object} Phaser.Types.Renderer.WebGL.WebGLPipelineAttributesConfig
+ * @since 3.50.0
+ *
+ * @property {string} name - The name of the attribute as defined in the vertex shader.
+ * @property {number} size - The number of components in the attribute, i.e. 1 for a float, 2 for a vec2, 3 for a vec3, etc.
+ * @property {GLenum} type - The data type of the attribute. Either `gl.BYTE`, `gl.SHORT`, `gl.UNSIGNED_BYTE`, `gl.UNSIGNED_SHORT` or `gl.FLOAT`.
+ * @property {number} offset - The offset, in bytes, of this attribute data in the vertex array. Equivalent to `offsetof(vertex, attrib)` in C.
+ * @property {boolean} normalized - Should the attribute data be normalized?
+ * @property {boolean} enabled - You should set this to `false` by default. The pipeline will enable it on boot.
+ * @property {number} location - You should set this to `-1` by default. The pipeline will set it on boot.
+ */
diff --git a/src/renderer/webgl/typedefs/WebGLPipelineConfig.js b/src/renderer/webgl/typedefs/WebGLPipelineConfig.js
new file mode 100644
index 000000000..e4cd7a117
--- /dev/null
+++ b/src/renderer/webgl/typedefs/WebGLPipelineConfig.js
@@ -0,0 +1,14 @@
+/**
+ * @typedef {object} Phaser.Types.Renderer.WebGL.WebGLPipelineConfig
+ * @since 3.50.0
+ *
+ * @property {Phaser.Game} game - The Phaser.Game instance that owns this pipeline.
+ * @property {string} [name] - The name of the pipeline.
+ * @property {GLenum} [topology=gl.TRIANGLES] - How the primitives are rendered. The default value is GL_TRIANGLES. Here is the full list of rendering primitives: (https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Constants).
+ * @property {string} [vertShader] - The source code, as a string, for the vertex shader.
+ * @property {string} [fragShader] - The source code, as a string, for the fragment shader. Can include `%count%` and `%forloop%` declarations for multi-texture support.
+ * @property {number} [vertexCapacity] - The number of vertices to hold in the batch. Defaults to `RenderConfig.batchSize` * 6.
+ * @property {number} [vertexSize] - The size, in bytes, of a single entry in the vertex buffer. Defaults to Float32Array.BYTES_PER_ELEMENT * 6 + Uint8Array.BYTES_PER_ELEMENT * 4.
+ * @property {ArrayBuffer} [vertices] - An optional Array Buffer full of pre-calculated vertices data.
+ * @property {Phaser.Types.Renderer.WebGL.WebGLPipelineAttributesConfig} [attributes] - An array of shader attribute data.
+ */
diff --git a/src/renderer/webgl/typedefs/index.js b/src/renderer/webgl/typedefs/index.js
new file mode 100644
index 000000000..edb75f907
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+++ b/src/renderer/webgl/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.Renderer.WebGL
+ */