diff --git a/src/modules/graphics/Graphics.cpp b/src/modules/graphics/Graphics.cpp
index e50d0af3e..6a8aa72a8 100644
--- a/src/modules/graphics/Graphics.cpp
+++ b/src/modules/graphics/Graphics.cpp
@@ -158,6 +158,7 @@ StringMap<Graphics::Support, Graphics::SUPPORT_MAX_ENUM>::Entry Graphics::suppor
 	{ "canvas", Graphics::SUPPORT_CANVAS },
 	{ "hdrcanvas", Graphics::SUPPORT_HDR_CANVAS },
 	{ "shadereffect", Graphics::SUPPORT_SHADEREFFECT },
+	{ "pixeleffect", Graphics::SUPPORT_SHADEREFFECT }, // for compatibility
 	{ "npot", Graphics::SUPPORT_NPOT },
 	{ "subtractive", Graphics::SUPPORT_SUBTRACTIVE },
 };
diff --git a/src/modules/graphics/opengl/ShaderEffect.cpp b/src/modules/graphics/opengl/ShaderEffect.cpp
index e1d5d61e9..7cdba4307 100644
--- a/src/modules/graphics/opengl/ShaderEffect.cpp
+++ b/src/modules/graphics/opengl/ShaderEffect.cpp
@@ -167,7 +167,7 @@ void ShaderEffect::createProgram(const std::vector<GLuint> &shaderids)
 	glLinkProgram(_program);
 	
 	for (it = shaderids.begin(); it != shaderids.end(); ++it)
-		glDeleteShader(*it); // flag shaders for deletion as soon as program object is deleted
+		glDeleteShader(*it); // flag shaders for auto-deletion when program object is deleted
 	
 	GLint link_ok;
 	glGetProgramiv(_program, GL_LINK_STATUS, &link_ok);
@@ -251,7 +251,6 @@ std::string ShaderEffect::getGLSLVersion()
 	return versionString.substr(0, minorEndPos);
 }
 
-
 bool ShaderEffect::isSupported()
 {
 	return GLEE_VERSION_2_0 && getGLSLVersion() >= "1.2";
diff --git a/src/scripts/graphics.lua b/src/scripts/graphics.lua
index 3d1b1e64e..545d79933 100644
--- a/src/scripts/graphics.lua
+++ b/src/scripts/graphics.lua
@@ -1323,20 +1323,20 @@ void main() {
 		if vertcode then
 			local s = vertcode:gsub("\r\n\t", " ")
 			s = s:gsub("%w+(%s+)%(", "")
-			if s:match("vec4 effect%(") then
+			if s:match("vec4%s*effect%(") then
 				fragcode = vertcode -- first argument contains frag shader code
 			end
-			if not s:match("vec4 transform%(") then
+			if not s:match("vec4%s*transform%(") then
 				vertcode = nil -- first argument doesn't contain vert shader code
 			end
 		end
 		if fragcode then
 			local s = fragcode:gsub("\r\n\t", " ")
 			s = s:gsub("%w+(%s+)%(", "")
-			if s:match("vec4 transform%(") then
+			if s:match("vec4%s*transform%(") then
 				vertcode = fragcode -- second argument contains vert shader code
 			end
-			if not s:match("vec4 effect%(") then
+			if not s:match("vec4%s*effect%(") then
 				fragcode = nil -- second argument doesn't contain frag shader code
 			end
 		end
@@ -1382,6 +1382,8 @@ void main() {
 	-- {a, b, c, d, e, f, ...}
 	local function flattenMatrices(mat, ...)
 		if not mat then return end
+		
+		local tonumber = tonumber
 
 		local ret,l = {}, 1
 		ret.dimension = #mat
@@ -1438,6 +1440,9 @@ void main() {
 		return effect
 	end
 	
+	
+	-- compatibility functions
+	
 	function love.graphics.newPixelEffect(fragcode)
 		return love.graphics.newShaderEffect(nil, fragcode)
 	end
diff --git a/src/scripts/graphics.lua.h b/src/scripts/graphics.lua.h
index b02ddfd7a..f52313340 100644
--- a/src/scripts/graphics.lua.h
+++ b/src/scripts/graphics.lua.h
@@ -6333,15 +6333,16 @@ const unsigned char graphics_lua[] =
 	0x09, 0x09, 0x09, 0x73, 0x20, 0x3d, 0x20, 0x73, 0x3a, 0x67, 0x73, 0x75, 0x62, 0x28, 0x22, 0x25, 0x77, 0x2b, 
 	0x28, 0x25, 0x73, 0x2b, 0x29, 0x25, 0x28, 0x22, 0x2c, 0x20, 0x22, 0x22, 0x29, 0x0a,
 	0x09, 0x09, 0x09, 0x69, 0x66, 0x20, 0x73, 0x3a, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x28, 0x22, 0x76, 0x65, 0x63, 
-	0x34, 0x20, 0x65, 0x66, 0x66, 0x65, 0x63, 0x74, 0x25, 0x28, 0x22, 0x29, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
+	0x34, 0x25, 0x73, 0x2a, 0x65, 0x66, 0x66, 0x65, 0x63, 0x74, 0x25, 0x28, 0x22, 0x29, 0x20, 0x74, 0x68, 0x65, 
+	0x6e, 0x0a,
 	0x09, 0x09, 0x09, 0x09, 0x66, 0x72, 0x61, 0x67, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x3d, 0x20, 0x76, 0x65, 0x72, 
 	0x74, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x2d, 0x2d, 0x20, 0x66, 0x69, 0x72, 0x73, 0x74, 0x20, 0x61, 0x72, 0x67, 
 	0x75, 0x6d, 0x65, 0x6e, 0x74, 0x20, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x73, 0x20, 0x66, 0x72, 0x61, 
 	0x67, 0x20, 0x73, 0x68, 0x61, 0x64, 0x65, 0x72, 0x20, 0x63, 0x6f, 0x64, 0x65, 0x0a,
 	0x09, 0x09, 0x09, 0x65, 0x6e, 0x64, 0x0a,
 	0x09, 0x09, 0x09, 0x69, 0x66, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x73, 0x3a, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x28, 
-	0x22, 0x76, 0x65, 0x63, 0x34, 0x20, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x6f, 0x72, 0x6d, 0x25, 0x28, 0x22, 
-	0x29, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
+	0x22, 0x76, 0x65, 0x63, 0x34, 0x25, 0x73, 0x2a, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x6f, 0x72, 0x6d, 0x25, 
+	0x28, 0x22, 0x29, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
 	0x09, 0x09, 0x09, 0x09, 0x76, 0x65, 0x72, 0x74, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x3d, 0x20, 0x6e, 0x69, 0x6c, 
 	0x20, 0x2d, 0x2d, 0x20, 0x66, 0x69, 0x72, 0x73, 0x74, 0x20, 0x61, 0x72, 0x67, 0x75, 0x6d, 0x65, 0x6e, 0x74, 
 	0x20, 0x64, 0x6f, 0x65, 0x73, 0x6e, 0x27, 0x74, 0x20, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x20, 0x76, 
@@ -6355,16 +6356,16 @@ const unsigned char graphics_lua[] =
 	0x09, 0x09, 0x09, 0x73, 0x20, 0x3d, 0x20, 0x73, 0x3a, 0x67, 0x73, 0x75, 0x62, 0x28, 0x22, 0x25, 0x77, 0x2b, 
 	0x28, 0x25, 0x73, 0x2b, 0x29, 0x25, 0x28, 0x22, 0x2c, 0x20, 0x22, 0x22, 0x29, 0x0a,
 	0x09, 0x09, 0x09, 0x69, 0x66, 0x20, 0x73, 0x3a, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x28, 0x22, 0x76, 0x65, 0x63, 
-	0x34, 0x20, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x6f, 0x72, 0x6d, 0x25, 0x28, 0x22, 0x29, 0x20, 0x74, 0x68, 
-	0x65, 0x6e, 0x0a,
+	0x34, 0x25, 0x73, 0x2a, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x6f, 0x72, 0x6d, 0x25, 0x28, 0x22, 0x29, 0x20, 
+	0x74, 0x68, 0x65, 0x6e, 0x0a,
 	0x09, 0x09, 0x09, 0x09, 0x76, 0x65, 0x72, 0x74, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x3d, 0x20, 0x66, 0x72, 0x61, 
 	0x67, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x2d, 0x2d, 0x20, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x61, 0x72, 
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 	0x09, 0x09, 0x09, 0x65, 0x6e, 0x64, 0x0a,
 	0x09, 0x09, 0x09, 0x69, 0x66, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x73, 0x3a, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x28, 
-	0x22, 0x76, 0x65, 0x63, 0x34, 0x20, 0x65, 0x66, 0x66, 0x65, 0x63, 0x74, 0x25, 0x28, 0x22, 0x29, 0x20, 0x74, 
-	0x68, 0x65, 0x6e, 0x0a,
+	0x22, 0x76, 0x65, 0x63, 0x34, 0x25, 0x73, 0x2a, 0x65, 0x66, 0x66, 0x65, 0x63, 0x74, 0x25, 0x28, 0x22, 0x29, 
+	0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
 	0x09, 0x09, 0x09, 0x09, 0x66, 0x72, 0x61, 0x67, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x3d, 0x20, 0x6e, 0x69, 0x6c, 
 	0x20, 0x2d, 0x2d, 0x20, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x61, 0x72, 0x67, 0x75, 0x6d, 0x65, 0x6e, 
 	0x74, 0x20, 0x64, 0x6f, 0x65, 0x73, 0x6e, 0x27, 0x74, 0x20, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x20, 
@@ -6475,6 +6476,9 @@ const unsigned char graphics_lua[] =
 	0x20, 0x2e, 0x2e, 0x2e, 0x29, 0x0a,
 	0x09, 0x09, 0x69, 0x66, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x6d, 0x61, 0x74, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x20, 
 	0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x65, 0x6e, 0x64, 0x0a,
+	0x09, 0x09, 0x0a,
+	0x09, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x74, 0x6f, 0x6e, 0x75, 0x6d, 0x62, 0x65, 0x72, 0x20, 0x3d, 
+	0x20, 0x74, 0x6f, 0x6e, 0x75, 0x6d, 0x62, 0x65, 0x72, 0x0a,
 	0x09, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x72, 0x65, 0x74, 0x2c, 0x6c, 0x20, 0x3d, 0x20, 0x7b, 0x7d, 
 	0x2c, 0x20, 0x31, 0x0a,
 	0x09, 0x09, 0x72, 0x65, 0x74, 0x2e, 0x64, 0x69, 0x6d, 0x65, 0x6e, 0x73, 0x69, 0x6f, 0x6e, 0x20, 0x3d, 0x20, 
@@ -6595,6 +6599,10 @@ const unsigned char graphics_lua[] =
 	0x09, 0x09, 0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x65, 0x66, 0x66, 0x65, 0x63, 0x74, 0x0a,
 	0x09, 0x65, 0x6e, 0x64, 0x0a,
 	0x09, 0x0a,
+	0x09, 0x0a,
+	0x09, 0x2d, 0x2d, 0x20, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x74, 0x69, 0x62, 0x69, 0x6c, 0x69, 0x74, 0x79, 0x20, 
+	0x66, 0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x0a,
+	0x09, 0x0a,
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