From f2460b34da56f264b29622811df858dddf6fd00d Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Fri, 2 Dec 2016 18:15:47 +0100
Subject: [PATCH] add ContextHolder
---
pixelgl/interface.go | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
diff --git a/pixelgl/interface.go b/pixelgl/interface.go
index 2b7fbd6..2a272b0 100644
--- a/pixelgl/interface.go
+++ b/pixelgl/interface.go
@@ -36,13 +36,7 @@ type Doer interface {
//
// This type does *not* represent an OpenGL context in the OpenGL terminology.
type Context struct {
- vertexFormat VertexFormat
- shader *Shader
-}
-
-// VertexFormat returns the current vertex format.
-func (c Context) VertexFormat() VertexFormat {
- return c.vertexFormat
+ shader *Shader
}
// Shader returns the current shader.
@@ -50,18 +44,19 @@ func (c Context) Shader() *Shader {
return c.shader
}
-// WithVertexFormat returns a copy of this context with the specified vertex format.
-func (c Context) WithVertexFormat(vf VertexFormat) Context {
- return Context{
- vertexFormat: vf,
- shader: c.shader,
- }
-}
-
// WithShader returns a copy of this context with the specified shader.
func (c Context) WithShader(s *Shader) Context {
return Context{
- vertexFormat: c.vertexFormat,
- shader: s,
+ shader: s,
}
}
+
+// ContextHolder is a root Doer with no parent. It simply forwards a context to a child.
+type ContextHolder struct {
+ Context
+}
+
+// Do calls sub and passes it the held context.
+func (ch *ContextHolder) Do(sub func(ctx Context)) {
+ sub(ch.Context)
+}
--
GitLab