Procs
proc setShader*(self: ShaderMaterial; shader: Shader) {.
gcsafe, locks: 0.}proc getShader*(self: ShaderMaterial): Shader {.
gcsafe, locks: 0.}proc setShaderParam*(self: ShaderMaterial; param: string; value: Variant) {.
gcsafe, locks: 0.}proc getShaderParam*(self: ShaderMaterial; param: string): Variant {.
gcsafe, locks: 0.}