add image caching

1 files changed, 19 insertions, 1 deletions

diff --git a/honey/shader.lua b/honey/shader.lua
index 083b260..6b281f7 100644
--- a/honey/shader.lua
+++ b/honey/shader.lua
@@ -52,6 +52,10 @@ function Shader.new(_, sources)
 		gl.DeleteShader(shader)
 	end
 
+	self.__gc = honey.util.gc_canary(function()
+		gl.DeleteProgram(self.program)
+	end)
+
 	setmetatable(self, Shader)
 	return self
 end
@@ -115,4 +119,18 @@ function Shader.configure(self, tbl)
 	processKey("matrix", "setMatrix")
 end
 
-return module.Shader
+
+local shaderCache = {}
+function loadShader(vertex, fragment)
+	local id = vertex .. "+" .. fragment
+	if not shaderCache[id] then
+		local shader = Shader{vertexFile=vertex, fragmentFile=fragment}
+		shaderCache[id] = shader
+	end
+	return shaderCache[id]
+end
+function clearShaderCache()
+	shaderCache = {}
+end
+
+return module