1 files changed, 82 insertions, 22 deletions
diff --git a/src/lua/embed/scripts/graphics.lua.h b/src/lua/embed/scripts/graphics.lua.h
index 1dddbf5..0a66127 100644
--- a/src/lua/embed/scripts/graphics.lua.h
+++ b/src/lua/embed/scripts/graphics.lua.h
@@ -27,44 +27,104 @@ jg.SpriteMode = {
     ANIMATED = 3
 }
 
-local default_shader = nil
-local default_shader_source = [[
-#VERTEX_SHADER
-
-Vertex vert(Vertex v)
-{
-    return v;
+-- built in shaders
+jg.Shaders = {
+	Font = nil, 
+	Texture = nil, 
+	Sprite = nil, 
+	SpriteSheet = nil,
+	Default = nil
 }
 
-#END_VERTEX_SHADER
-
-#FRAGMENT_SHADER
-
-Color frag(Color col, Texture tex, Vertex v)
-{
-    return col * texel(tex, v.uv);
-}
-
-#END_FRAGMENT_SHADER
-]]
+local function compileBuiltInShaders() 
+	jg.Shaders.Font = jg.newShader([[
+		#VERTEX_SHADER
+		Vertex vert(Vertex v)
+		{
+			return v;
+		}
+		#END_VERTEX_SHADER
+		#FRAGMENT_SHADER
+		Color frag(Color col, Texture tex, Vertex v)
+		{
+			return Color(col.rgb, texel(tex, v.uv).a);
+		}
+		#END_FRAGMENT_SHADER
+	]])
+	jg.Shaders.Texture = jg.newShader([[
+		#VERTEX_SHADER
+		Vertex vert(Vertex v)
+		{
+			return v;
+		}
+		#END_VERTEX_SHADER
+		#FRAGMENT_SHADER
+		Color frag(Color col, Texture tex, Vertex v)
+		{
+			return col * texel(tex, v.uv);
+		}
+		#END_FRAGMENT_SHADER
+	]])
+	jg.Shaders.Sprite = jg.newShader([[
+		#VERTEX_SHADER
+		Vertex vert(Vertex v)
+		{
+			return v;
+		}
+		#END_VERTEX_SHADER
+		#FRAGMENT_SHADER
+		Color frag(Color col, Texture tex, Vertex v)
+		{
+			return col * texel(tex, v.uv);
+		}
+		#END_FRAGMENT_SHADER
+	]])
+	jg.Shaders.SpriteSheet = jg.newShader([[
+		#VERTEX_SHADER
+		Vertex vert(Vertex v)
+		{
+			return v;
+		}
+		#END_VERTEX_SHADER
+		#FRAGMENT_SHADER
+		Color frag(Color col, Texture tex, Vertex v)
+		{
+			return col * texel(tex, v.uv);
+		}
+		#END_FRAGMENT_SHADER
+	]])
+	jg.Shaders.Default = jg.newShader([[
+		#VERTEX_SHADER
+		Vertex vert(Vertex v)
+		{
+			return v;
+		}
+		#END_VERTEX_SHADER
+		#FRAGMENT_SHADER
+		Color frag(Color col, Texture tex, Vertex v)
+		{
+			return col * texel(tex, v.uv);
+		}
+		#END_FRAGMENT_SHADER
+	]])
+end
 
 local _init = jg.init
 local initialized = false
-
 jg.init = function(setting) 
     if initialized then 
         return initialized
     end
     initialized = _init(setting)
     if initialized then 
-        default_shader = jg.newShader(default_shader_source)
-        jg.useShader(default_shader)
+        compileBuiltInShaders()
+        jg.useShader(jg.Shaders.Default)
     end
     return initialized 
 end
 
 jg.unuseShader = function()
-    jg.useShader(default_shader)
+    jg.useShader(jg.Shaders.Default)
 end
 
 -- Reset all attributes to default value.