On Jun 23, 2013, at 4:52 PM, kilon <[email protected]> wrote:
> next question .
>
> I have this method.
>
> initializeProgram
> "create each shader and program"
>
> | shaderList strVertexShader strFragmentShader |
>
> strVertexShader := self createShader: GL_VERTEX_SHADER string: ( self
> vertexShader ).
> strFragmentShader := self createShader: GL_FRAGMENT_SHADER string:
> (self
> fragmentShader) .
> shaderList := #( strVertexShader strFragmentShader ).
> self createProgram: shaderList .
> shaderList do: [ :each | gl deleteShader: each ].
>
>
> Each time I try to accept the code it complains that strVertexShader and
> strFragmentShader are unused and ask for removing them . Why ?
>
> Is this an IDE bug ? Its clear from the code that I use those two local
> variables to pass them to the array shaderList. Am I missing something here
> ?
Yes:
shaderList := #( strVertexShader strFragmentShader ).
here the Array you create is a so called literal Array. It can not contain
variables, only literals. The compiler sees is as
#(#strVertexShader #strFragmentShader).
What you need instead is a compile time evaluated Array:
shaderList := {strVertexShader strFragmentShader}.
Marcus
