1 files changed, 29 insertions, 2 deletions
diff --git a/JGUI/main.lua b/JGUI/main.lua
index 1cb7b9c..c932a55 100644
--- a/JGUI/main.lua
+++ b/JGUI/main.lua
@@ -1,4 +1,20 @@
 io.stdout:setvbuf("no")
+local texture_shader_source = [[
+#VERTEX_SHADER
+Vertex vert(Vertex v)
+{
+    return v; 
+}
+#END_VERTEX_SHADER
+
+#FRAGMENT_SHADER
+Color frag(Color c, Texture tex, Vertex v)
+{
+    return c * texel(tex, v.uv);
+}
+#END_FRAGMENT_SHADER
+]] 
+local texture_shader = nil
 local JGUI = require("JGUI")
 
 local panel = JGUI.newPanel("Panel")
@@ -22,7 +38,7 @@ button.onRelease = function()
     bt = bt1
 end
 function jin.core.onLoad() 
-
+    texture_shader = jin.graphics.newShader(texture_shader_source)
 end
 
 function jin.core.onEvent(e)
@@ -34,12 +50,23 @@ function jin.core.onEvent(e)
     end
     panel:onEvent(e)
 end
-
+local t = 0
+local f = 0
 function jin.core.onUpdate(dt)
     panel:onUpdate(dt)
+    f = f + 1 
+    t = t + dt 
+    if t >= 1 then 
+        print(f)
+        t = t - 1
+        f = 0
+    end
 end
 
 function jin.core.onDraw()
+    jin.graphics.setColor(255 * math.sin(t), 255 * math.cos(t), 255 * math.tan(t), 255)
+    jin.graphics.useShader(texture_shader)
     -- jin.graphics.unbindCanvas()
     jin.graphics.draw(bt, 0, button.y)
+    jin.graphics.unuseShader()
 end