Module shader
shader: Friendly wrapper for OpenGL GLSL shaders
Class shader
| shader:vertex (code) | Add another chunk of GLSL code to the vertex shader: |
| shader:fragment (code) | Add another chunk of GLSL code to the fragment shader: |
| shader:bind () | Bind the shader program (gl.UseProgram) will compile/link the shader if required will throw an error of shader fails to compile/link |
| shader:unbind () | Stop using this shader program (gl.UseProgram(0)) |
| shader:context_destroy () | Release the shader program (it will be recreated when next used) |
| shader:GetAttribLocation (k) | Get the attribute location (GLuint) for a shader attribute |
| shader:uniform (k, ...) | Set a shader uniform |
| shader:attribute (k, ...) | Set a shader attribute |
Class shader
A shader program- shader:vertex (code)
-
Add another chunk of GLSL code to the vertex shader:
Parameters:
- code string
Returns:
-
shader
self
- shader:fragment (code)
-
Add another chunk of GLSL code to the fragment shader:
Parameters:
- code string
Returns:
-
shader
self
- shader:bind ()
-
Bind the shader program (gl.UseProgram)
will compile/link the shader if required
will throw an error of shader fails to compile/link
Returns:
-
shader
self
- shader:unbind ()
-
Stop using this shader program (gl.UseProgram(0))
Returns:
-
shader
self
- shader:context_destroy ()
-
Release the shader program
(it will be recreated when next used)
Returns:
-
shader
self
- shader:GetAttribLocation (k)
-
Get the attribute location (GLuint) for a shader attribute
Parameters:
- k string attribute name
Returns:
-
GLuint
attribute location
- shader:uniform (k, ...)
-
Set a shader uniform
Parameters:
- k string uniform name
- ... uniform values (numbers)
Returns:
-
shader
self
- shader:attribute (k, ...)
-
Set a shader attribute
Parameters:
- k string attribute name
- ... attribute values (numbers)
Returns:
-
shader
self