func (ctx *FrameContext) DrawContext(shader loader.Shader) DrawContext {
r := DrawContext{
GL: ctx.GL,
Camera: ctx.Camera,
Shader: shader,
}
if ctx.activeShader != shader {
shader.Use()
ctx.activeShader = shader
}
if ctx.shaderCache == nil {
ctx.shaderCache = map[loader.Shader]struct{}{shader: struct{}{}}
ctx.bindShader(shader)
} else if _, ok := ctx.shaderCache[shader]; !ok {
ctx.bindShader(shader)
}
return r
}
