PostEffect
Base class for all post effects. Post effects take a a render target as input apply effects to it and then render the result to an output render target or the screen if no output is specified.
Summary
Properties
| device | The graphics device of the application. |
| needsDepthBuffer | The property that should to be set to |
| quadVertexShader | A simple vertex shader used to render a quad, which requires 'vec2 aPosition' in the vertex buffer, and generates uv coordinates vUv0 for use in the fragment shader. |
Methods
| drawQuad | Draw a screen-space rectangle in a render target, using a specified shader. |
| render | Render the post effect using the specified inputTarget to the specified outputTarget. |
Details
Constructor
PostEffect(graphicsDevice)
Create a new PostEffect instance.
Parameters
| graphicsDevice | GraphicsDevice | The graphics device of the application. |
Properties
The property that should to be set to true (by the custom post effect) if a depth map
is necessary (default is false).
A simple vertex shader used to render a quad, which requires 'vec2 aPosition' in the vertex buffer, and generates uv coordinates vUv0 for use in the fragment shader.
Methods
drawQuad(target, shader, [rect])
Draw a screen-space rectangle in a render target, using a specified shader.
Parameters
| target | RenderTarget, null | The output render target. |
| shader | Shader | The shader to be used for drawing the rectangle. |
| rect | Vec4 | The normalized screen-space position (rect.x, rect.y) and size (rect.z, rect.w) of the rectangle. Default is [0, 0, 1, 1]. |
render(inputTarget, outputTarget, [rect])
Render the post effect using the specified inputTarget to the specified outputTarget.
Parameters
| inputTarget | RenderTarget | The input render target. |
| outputTarget | RenderTarget | The output render target. If null then this will be the screen. |
| rect | Vec4 | The rect of the current camera. If not specified, it will default to [0, 0, 1, 1]. |