Merged rude/love into default

.hgignore

@@ -22,7 +22,8 @@ glob:*.lib
 glob:*.ncb
 glob:*.exe
 glob:*.bat
-glob:platform/macosx/build
+glob:platform/macosx/build
+glob:platform/macosx/DerivedData
 glob:platform/macosx/love.xcodeproj/bill*
 glob:platform/macosx/love.xcodeproj/xcuserdata
 glob:platform/macosx/love.xcodeproj/project.xcworkspace

platform/macosx/love.xcodeproj/project.pbxproj

@@ -159,10 +159,8 @@
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 		A96F418C1412B3AD0067FE9A /* WheelJoint.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F418A1412B3A30067FE9A /* WheelJoint.cpp */; };
 		A96F41921412BBEE0067FE9A /* Canvas.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41901412BBEE0067FE9A /* Canvas.cpp */; };
-		A96F41951412BBF80067FE9A /* PixelEffect.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41931412BBF80067FE9A /* PixelEffect.cpp */; };
 		A96F41981412BC000067FE9A /* VertexBuffer.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41961412BC000067FE9A /* VertexBuffer.cpp */; };
 		A96F419B1412BC070067FE9A /* wrap_Canvas.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41991412BC070067FE9A /* wrap_Canvas.cpp */; };
-		A96F419E1412BC0E0067FE9A /* wrap_PixelEffect.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F419C1412BC0E0067FE9A /* wrap_PixelEffect.cpp */; };
 		A96F41A41412C91F0067FE9A /* EdgeShape.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41A21412C91E0067FE9A /* EdgeShape.cpp */; };
 		A96F41A71412C92B0067FE9A /* wrap_EdgeShape.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A96F41A51412C92B0067FE9A /* wrap_EdgeShape.cpp */; };
 		A97E632514604BC200020E43 /* wrap_Keyboard.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A97E632314604BC200020E43 /* wrap_Keyboard.cpp */; };
@@ -238,6 +236,8 @@
 		A9F2D09114BA85EC0035D2A5 /* Audio.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A9F2D09014BA85EC0035D2A5 /* Audio.cpp */; };
 		A9F6E6AE15A1080D00C86200 /* love.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A9F6E6AC15A1080D00C86200 /* love.cpp */; };
 		A9F6E6B115A1099C00C86200 /* GmeDecoder.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A9F6E6AF15A1099C00C86200 /* GmeDecoder.cpp */; };
+		FAE69DC516A6BE7800C1AC79 /* Shader.cpp in Sources */ = {isa = PBXBuildFile; fileRef = FAE69DC116A6BE7800C1AC79 /* Shader.cpp */; };
+		FAE69DC616A6BE7800C1AC79 /* wrap_Shader.cpp in Sources */ = {isa = PBXBuildFile; fileRef = FAE69DC316A6BE7800C1AC79 /* wrap_Shader.cpp */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -293,7 +293,7 @@
 		A93E69EB10420ABF007D418B /* Reference.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Reference.h; sourceTree = "<group>"; };
 		A93E69EC10420ABF007D418B /* runtime.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = runtime.cpp; sourceTree = "<group>"; };
 		A93E69ED10420ABF007D418B /* runtime.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = runtime.h; sourceTree = "<group>"; };
-		A93E69EE10420ABF007D418B /* types.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = types.h; sourceTree = "<group>"; };
+		A93E69EE10420ABF007D418B /* types.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; path = types.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		A93E69EF10420ABF007D418B /* Vector.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Vector.cpp; sourceTree = "<group>"; };
 		A93E69F010420ABF007D418B /* Vector.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Vector.h; sourceTree = "<group>"; };
 		A93E69F110420ABF007D418B /* version.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = version.h; sourceTree = "<group>"; };
@@ -401,14 +401,14 @@
 		A93E6A8010420AC2007D418B /* wrap_Rasterizer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Rasterizer.h; sourceTree = "<group>"; };
 		A93E6A8210420AC2007D418B /* Drawable.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Drawable.cpp; sourceTree = "<group>"; };
 		A93E6A8310420AC2007D418B /* Drawable.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Drawable.h; sourceTree = "<group>"; };
-		A93E6A8410420AC2007D418B /* Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Graphics.h; sourceTree = "<group>"; };
+		A93E6A8410420AC2007D418B /* Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; path = Graphics.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		A93E6A8510420AC2007D418B /* Image.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Image.h; sourceTree = "<group>"; };
 		A93E6A8710420AC2007D418B /* Font.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Font.cpp; sourceTree = "<group>"; };
 		A93E6A8810420AC2007D418B /* Font.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Font.h; sourceTree = "<group>"; };
 		A93E6A8910420AC2007D418B /* GLee.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = GLee.c; sourceTree = "<group>"; };
 		A93E6A8A10420AC2007D418B /* GLee.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GLee.h; sourceTree = "<group>"; };
-		A93E6A8D10420AC2007D418B /* Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Graphics.cpp; sourceTree = "<group>"; };
+		A93E6A8D10420AC2007D418B /* Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; lineEnding = 0; path = Graphics.cpp; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.cpp; };
-		A93E6A8E10420AC2007D418B /* Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Graphics.h; sourceTree = "<group>"; };
+		A93E6A8E10420AC2007D418B /* Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; path = Graphics.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		A93E6A8F10420AC2007D418B /* Image.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Image.cpp; sourceTree = "<group>"; };
 		A93E6A9010420AC2007D418B /* Image.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Image.h; sourceTree = "<group>"; };
 		A93E6A9310420AC2007D418B /* Quad.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Quad.cpp; sourceTree = "<group>"; };
@@ -417,8 +417,8 @@
 		A93E6A9610420AC2007D418B /* SpriteBatch.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SpriteBatch.h; sourceTree = "<group>"; };
 		A93E6A9910420AC2007D418B /* wrap_Font.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Font.cpp; sourceTree = "<group>"; };
 		A93E6A9A10420AC2007D418B /* wrap_Font.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Font.h; sourceTree = "<group>"; };
-		A93E6A9D10420AC3007D418B /* wrap_Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Graphics.cpp; sourceTree = "<group>"; };
+		A93E6A9D10420AC3007D418B /* wrap_Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; lineEnding = 0; path = wrap_Graphics.cpp; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.cpp; };
-		A93E6A9E10420AC3007D418B /* wrap_Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Graphics.h; sourceTree = "<group>"; };
+		A93E6A9E10420AC3007D418B /* wrap_Graphics.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; path = wrap_Graphics.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		A93E6A9F10420AC3007D418B /* wrap_Image.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Image.cpp; sourceTree = "<group>"; };
 		A93E6AA010420AC3007D418B /* wrap_Image.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Image.h; sourceTree = "<group>"; };
 		A93E6AA110420AC3007D418B /* wrap_Quad.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Quad.cpp; sourceTree = "<group>"; };
@@ -532,9 +532,9 @@
 		A93E6B8C10420ACB007D418B /* wrap_SoundData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_SoundData.h; sourceTree = "<group>"; };
 		A93E6B8F10420ACC007D418B /* Timer.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Timer.cpp; sourceTree = "<group>"; };
 		A93E6B9010420ACC007D418B /* Timer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Timer.h; sourceTree = "<group>"; };
-		A93E6B9710420ACC007D418B /* boot.lua */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.lua; path = boot.lua; sourceTree = "<group>"; };
+		A93E6B9710420ACC007D418B /* boot.lua */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.lua; lineEnding = 0; path = boot.lua; sourceTree = "<group>"; };
 		A93E6B9810420ACC007D418B /* boot.lua.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = boot.lua.h; sourceTree = "<group>"; };
-		A93E6B9910420ACC007D418B /* graphics.lua */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.lua; path = graphics.lua; sourceTree = "<group>"; };
+		A93E6B9910420ACC007D418B /* graphics.lua */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.lua; lineEnding = 0; path = graphics.lua; sourceTree = "<group>"; };
 		A93E6B9A10420ACC007D418B /* graphics.lua.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = graphics.lua.h; sourceTree = "<group>"; };
 		A93E6E4610420B4A007D418B /* OpenAL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenAL.framework; path = System/Library/Frameworks/OpenAL.framework; sourceTree = SDKROOT; };
 		A93E6E4710420B4A007D418B /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = /System/Library/Frameworks/OpenGL.framework; sourceTree = "<absolute>"; };
@@ -558,7 +558,7 @@
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 		A968F0CE1083A9A900A895AA /* Event.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Event.cpp; sourceTree = "<group>"; };
 		A968F0D01083A9B900A895AA /* File.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = File.cpp; sourceTree = "<group>"; };
-		A968F0D21083A9D400A895AA /* Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Graphics.cpp; sourceTree = "<group>"; };
+		A968F0D21083A9D400A895AA /* Graphics.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; lineEnding = 0; path = Graphics.cpp; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.cpp; };
 		A968F0D41083A9E700A895AA /* Joystick.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Joystick.cpp; sourceTree = "<group>"; };
 		A968F0D61083A9F200A895AA /* Keyboard.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Keyboard.cpp; sourceTree = "<group>"; };
 		A968F0D81083A9FC00A895AA /* Mouse.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Mouse.cpp; sourceTree = "<group>"; };
@@ -587,15 +587,11 @@
 		A96F418A1412B3A30067FE9A /* WheelJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WheelJoint.cpp; sourceTree = "<group>"; };
 		A96F418B1412B3A80067FE9A /* WheelJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WheelJoint.h; sourceTree = "<group>"; };
 		A96F41901412BBEE0067FE9A /* Canvas.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Canvas.cpp; sourceTree = "<group>"; };
-		A96F41911412BBEE0067FE9A /* Canvas.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Canvas.h; sourceTree = "<group>"; };
+		A96F41911412BBEE0067FE9A /* Canvas.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; path = Canvas.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
-		A96F41931412BBF80067FE9A /* PixelEffect.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = PixelEffect.cpp; sourceTree = "<group>"; };
-		A96F41941412BBF80067FE9A /* PixelEffect.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PixelEffect.h; sourceTree = "<group>"; };
 		A96F41961412BC000067FE9A /* VertexBuffer.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = VertexBuffer.cpp; sourceTree = "<group>"; };
 		A96F41971412BC000067FE9A /* VertexBuffer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = VertexBuffer.h; sourceTree = "<group>"; };
 		A96F41991412BC070067FE9A /* wrap_Canvas.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Canvas.cpp; sourceTree = "<group>"; };
 		A96F419A1412BC070067FE9A /* wrap_Canvas.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Canvas.h; sourceTree = "<group>"; };
-		A96F419C1412BC0E0067FE9A /* wrap_PixelEffect.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_PixelEffect.cpp; sourceTree = "<group>"; };
-		A96F419D1412BC0E0067FE9A /* wrap_PixelEffect.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_PixelEffect.h; sourceTree = "<group>"; };
 		A96F41A21412C91E0067FE9A /* EdgeShape.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = EdgeShape.cpp; sourceTree = "<group>"; };
 		A96F41A31412C91E0067FE9A /* EdgeShape.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = EdgeShape.h; sourceTree = "<group>"; };
 		A96F41A51412C92B0067FE9A /* wrap_EdgeShape.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_EdgeShape.cpp; sourceTree = "<group>"; };
@@ -741,6 +737,10 @@
 		A9F6E6B015A1099C00C86200 /* GmeDecoder.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GmeDecoder.h; sourceTree = "<group>"; };
 		A9F8833511163C8C00831E98 /* audio.lua */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.lua; path = audio.lua; sourceTree = "<group>"; };
 		A9F8833611163C8C00831E98 /* audio.lua.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = audio.lua.h; sourceTree = "<group>"; };
+		FAE69DC116A6BE7800C1AC79 /* Shader.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Shader.cpp; sourceTree = "<group>"; };
+		FAE69DC216A6BE7800C1AC79 /* Shader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Shader.h; sourceTree = "<group>"; };
+		FAE69DC316A6BE7800C1AC79 /* wrap_Shader.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = wrap_Shader.cpp; sourceTree = "<group>"; };
+		FAE69DC416A6BE7800C1AC79 /* wrap_Shader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = wrap_Shader.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -1146,10 +1146,10 @@
 				A9642D7414D1A66000CE0B02 /* OpenGL.h */,
 				A9B4BA9A1045937F001DBC80 /* ParticleSystem.cpp */,
 				A9B4BA981045937F001DBC80 /* ParticleSystem.h */,
-				A96F41931412BBF80067FE9A /* PixelEffect.cpp */,
-				A96F41941412BBF80067FE9A /* PixelEffect.h */,
 				A93E6A9310420AC2007D418B /* Quad.cpp */,
 				A93E6A9410420AC2007D418B /* Quad.h */,
+				FAE69DC116A6BE7800C1AC79 /* Shader.cpp */,
+				FAE69DC216A6BE7800C1AC79 /* Shader.h */,
 				A93E6A9510420AC2007D418B /* SpriteBatch.cpp */,
 				A93E6A9610420AC2007D418B /* SpriteBatch.h */,
 				A96F41961412BC000067FE9A /* VertexBuffer.cpp */,
@@ -1164,10 +1164,10 @@
 				A93E6AA010420AC3007D418B /* wrap_Image.h */,
 				A9B4BA9B1045937F001DBC80 /* wrap_ParticleSystem.cpp */,
 				A9B4BA991045937F001DBC80 /* wrap_ParticleSystem.h */,
-				A96F419C1412BC0E0067FE9A /* wrap_PixelEffect.cpp */,
-				A96F419D1412BC0E0067FE9A /* wrap_PixelEffect.h */,
 				A93E6AA110420AC3007D418B /* wrap_Quad.cpp */,
 				A93E6AA210420AC3007D418B /* wrap_Quad.h */,
+				FAE69DC316A6BE7800C1AC79 /* wrap_Shader.cpp */,
+				FAE69DC416A6BE7800C1AC79 /* wrap_Shader.h */,
 				A93E6AA310420AC3007D418B /* wrap_SpriteBatch.cpp */,
 				A93E6AA410420AC3007D418B /* wrap_SpriteBatch.h */,
 			);
@@ -1713,7 +1713,7 @@
 		29B97313FDCFA39411CA2CEA /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0430;
+				LastUpgradeCheck = 0460;
 			};
 			buildConfigurationList = C01FCF4E08A954540054247B /* Build configuration list for PBXProject "love" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -1878,10 +1878,8 @@
 				A96E254F13B9892100456DEA /* threads.cpp in Sources */,
 				A96E255113B9892100456DEA /* wrap_Thread.cpp in Sources */,
 				A96F41921412BBEE0067FE9A /* Canvas.cpp in Sources */,
-				A96F41951412BBF80067FE9A /* PixelEffect.cpp in Sources */,
 				A96F41981412BC000067FE9A /* VertexBuffer.cpp in Sources */,
 				A96F419B1412BC070067FE9A /* wrap_Canvas.cpp in Sources */,
-				A96F419E1412BC0E0067FE9A /* wrap_PixelEffect.cpp in Sources */,
 				A901B882143B65C500D77063 /* DrawQable.cpp in Sources */,
 				A901B885143B661400D77063 /* Quad.cpp in Sources */,
 				A986ECAF132CEBB000F048C8 /* Fixture.cpp in Sources */,
@@ -1957,6 +1955,8 @@
 				A9F6E6B115A1099C00C86200 /* GmeDecoder.cpp in Sources */,
 				A911D2DB15DFECC8005B7EB8 /* Module.cpp in Sources */,
 				A5474CEF1624903B00C8EEAC /* math.cpp in Sources */,
+				FAE69DC516A6BE7800C1AC79 /* Shader.cpp in Sources */,
+				FAE69DC616A6BE7800C1AC79 /* wrap_Shader.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1966,9 +1966,9 @@
 		C01FCF4B08A954540054247B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
-				GCC_MODEL_TUNING = G5;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = love_Prefix.pch;
@@ -1981,8 +1981,8 @@
 		C01FCF4C08A954540054247B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
-				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = love_Prefix.pch;
 				INSTALL_PATH = "$(HOME)/Applications";
@@ -2001,21 +2001,17 @@
 				GCC_INCREASE_PRECOMPILED_HEADER_SHARING = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = NO;
-				GCC_TREAT_NONCONFORMANT_CODE_ERRORS_AS_WARNINGS = NO;
-				GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
 				GCC_WARN_ABOUT_MISSING_NEWLINE = NO;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
 				GCC_WARN_ABOUT_POINTER_SIGNEDNESS = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = NO;
-				GCC_WARN_CHECK_SWITCH_STATEMENTS = NO;
+				GCC_WARN_CHECK_SWITCH_STATEMENTS = YES;
-				GCC_WARN_EFFECTIVE_CPLUSPLUS_VIOLATIONS = NO;
 				GCC_WARN_FOUR_CHARACTER_CONSTANTS = NO;
 				GCC_WARN_HIDDEN_VIRTUAL_FUNCTIONS = NO;
 				GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = NO;
 				GCC_WARN_MISSING_PARENTHESES = NO;
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = NO;
 				GCC_WARN_PEDANTIC = NO;
-				GCC_WARN_PROTOTYPE_CONVERSION = NO;
 				GCC_WARN_SHADOW = NO;
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_TYPECHECK_CALLS_TO_PRINTF = NO;
@@ -2029,14 +2025,15 @@
 					/Library/Frameworks/SDL.framework/Headers,
 				);
 				INFOPLIST_FILE = "love-Info.plist";
+				LD_RUNPATH_SEARCH_PATHS = "@loader_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = love;
 				SDKROOT = macosx;
 				WARNING_CFLAGS = (
-					"-W",
 					"-Wall",
+					"-W",
 				);
 			};
 			name = Debug;
@@ -2051,21 +2048,17 @@
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_INPUT_FILETYPE = automatic;
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = NO;
-				GCC_TREAT_NONCONFORMANT_CODE_ERRORS_AS_WARNINGS = NO;
-				GCC_WARN_64_TO_32_BIT_CONVERSION = NO;
 				GCC_WARN_ABOUT_MISSING_NEWLINE = NO;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
 				GCC_WARN_ABOUT_POINTER_SIGNEDNESS = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = NO;
 				GCC_WARN_CHECK_SWITCH_STATEMENTS = YES;
-				GCC_WARN_EFFECTIVE_CPLUSPLUS_VIOLATIONS = NO;
 				GCC_WARN_FOUR_CHARACTER_CONSTANTS = NO;
 				GCC_WARN_HIDDEN_VIRTUAL_FUNCTIONS = NO;
 				GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = NO;
 				GCC_WARN_MISSING_PARENTHESES = NO;
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = NO;
 				GCC_WARN_PEDANTIC = NO;
-				GCC_WARN_PROTOTYPE_CONVERSION = NO;
 				GCC_WARN_SHADOW = NO;
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_TYPECHECK_CALLS_TO_PRINTF = NO;
@@ -2082,6 +2075,7 @@
 				);
 				INFOPLIST_FILE = "love-Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "@loader_path/../Frameworks";
+				LLVM_LTO = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_LDFLAGS = "";
@@ -2089,8 +2083,8 @@
 				SCAN_ALL_SOURCE_FILES_FOR_INCLUDES = YES;
 				SDKROOT = macosx;
 				WARNING_CFLAGS = (
-					"-W",
 					"-Wall",
+					"-W",
 				);
 			};
 			name = Release;

platform/msvc2010/liblove.vcxproj

@@ -404,7 +404,7 @@
     <ClCompile Include="..\..\src\modules\graphics\opengl\Image.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\OpenGL.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\ParticleSystem.cpp" />
-    <ClCompile Include="..\..\src\modules\graphics\opengl\PixelEffect.cpp" />
+    <ClCompile Include="..\..\src\modules\graphics\opengl\Shader.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\Quad.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\SpriteBatch.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\VertexBuffer.cpp" />
@@ -413,7 +413,7 @@
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Graphics.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Image.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_ParticleSystem.cpp" />
-    <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_PixelEffect.cpp" />
+    <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Shader.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Quad.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_SpriteBatch.cpp" />
     <ClCompile Include="..\..\src\modules\graphics\Quad.cpp" />
@@ -631,7 +631,7 @@
     <ClInclude Include="..\..\src\modules\graphics\opengl\Image.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\OpenGL.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\ParticleSystem.h" />
-    <ClInclude Include="..\..\src\modules\graphics\opengl\PixelEffect.h" />
+    <ClInclude Include="..\..\src\modules\graphics\opengl\Shader.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\Quad.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\SpriteBatch.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\VertexBuffer.h" />
@@ -640,7 +640,7 @@
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Graphics.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Image.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_ParticleSystem.h" />
-    <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_PixelEffect.h" />
+    <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Shader.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Quad.h" />
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_SpriteBatch.h" />
     <ClInclude Include="..\..\src\modules\graphics\Quad.h" />
@@ -733,4 +733,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

platform/msvc2010/liblove.vcxproj.filters

@@ -447,7 +447,7 @@
     <ClCompile Include="..\..\src\modules\graphics\Volatile.cpp">
       <Filter>modules\graphics</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\modules\graphics\opengl\PixelEffect.cpp">
+    <ClCompile Include="..\..\src\modules\graphics\opengl\Shader.cpp">
       <Filter>modules\graphics\opengl</Filter>
     </ClCompile>
     <ClCompile Include="..\..\src\modules\graphics\opengl\Quad.cpp">
@@ -474,7 +474,7 @@
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_ParticleSystem.cpp">
       <Filter>modules\graphics\opengl</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_PixelEffect.cpp">
+    <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Shader.cpp">
       <Filter>modules\graphics\opengl</Filter>
     </ClCompile>
     <ClCompile Include="..\..\src\modules\graphics\opengl\wrap_Quad.cpp">
@@ -1129,7 +1129,7 @@
     <ClInclude Include="..\..\src\modules\graphics\opengl\ParticleSystem.h">
       <Filter>modules\graphics\opengl</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\modules\graphics\opengl\PixelEffect.h">
+    <ClInclude Include="..\..\src\modules\graphics\opengl\Shader.h">
       <Filter>modules\graphics\opengl</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\modules\graphics\opengl\Quad.h">
@@ -1156,7 +1156,7 @@
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_ParticleSystem.h">
       <Filter>modules\graphics\opengl</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_PixelEffect.h">
+    <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Shader.h">
       <Filter>modules\graphics\opengl</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\modules\graphics\opengl\wrap_Quad.h">
@@ -1430,4 +1430,4 @@
   <ItemGroup>
     <ResourceCompile Include="love.rc" />
   </ItemGroup>
-</Project>
+</Project>

src/common/types.h

@@ -52,7 +52,7 @@ enum Type
 	GRAPHICS_PARTICLE_SYSTEM_ID,
 	GRAPHICS_SPRITE_BATCH_ID,
 	GRAPHICS_CANVAS_ID,
-	GRAPHICS_PIXELEFFECT_ID,
+	GRAPHICS_SHADER_ID,
 
 	// Image
 	IMAGE_IMAGE_DATA_ID,
@@ -123,7 +123,7 @@ const bits GRAPHICS_FONT_T = (bits(1) << GRAPHICS_FONT_ID) | OBJECT_T;
 const bits GRAPHICS_PARTICLE_SYSTEM_T = (bits(1) << GRAPHICS_PARTICLE_SYSTEM_ID) | GRAPHICS_DRAWABLE_T;
 const bits GRAPHICS_SPRITE_BATCH_T = (bits(1) << GRAPHICS_SPRITE_BATCH_ID) | GRAPHICS_DRAWABLE_T;
 const bits GRAPHICS_CANVAS_T = (bits(1) << GRAPHICS_CANVAS_ID) | GRAPHICS_DRAWQABLE_T;
-const bits GRAPHICS_PIXELEFFECT_T = (bits(1) << GRAPHICS_PIXELEFFECT_ID) | OBJECT_T;
+const bits GRAPHICS_SHADER_T = (bits(1) << GRAPHICS_SHADER_ID) | OBJECT_T;
 
 // Image.
 const bits IMAGE_IMAGE_DATA_T = (bits(1) << IMAGE_IMAGE_DATA_ID) | DATA_T;

src/modules/graphics/Graphics.cpp

@@ -158,7 +158,8 @@ StringMap<Graphics::Support, Graphics::SUPPORT_MAX_ENUM>::Entry Graphics::suppor
 {
 	{ "canvas", Graphics::SUPPORT_CANVAS },
 	{ "hdrcanvas", Graphics::SUPPORT_HDR_CANVAS },
-	{ "pixeleffect", Graphics::SUPPORT_PIXELEFFECT },
+	{ "shader", Graphics::SUPPORT_SHADER },
+	{ "pixeleffect", Graphics::SUPPORT_SHADER }, // for compatibility
 	{ "npot", Graphics::SUPPORT_NPOT },
 	{ "subtractive", Graphics::SUPPORT_SUBTRACTIVE },
 	{ "mipmap", Graphics::SUPPORT_MIPMAP },

src/modules/graphics/Graphics.h

@@ -87,7 +87,7 @@ public:
 	{
 		SUPPORT_CANVAS = 1,
 		SUPPORT_HDR_CANVAS,
-		SUPPORT_PIXELEFFECT,
+		SUPPORT_SHADER,
 		SUPPORT_NPOT,
 		SUPPORT_SUBTRACTIVE,
 		SUPPORT_MIPMAP,

src/modules/graphics/opengl/Canvas.h

@@ -30,7 +30,6 @@
 #include "common/math.h"
 #include "common/Matrix.h"
 #include "OpenGL.h"
-#include "GLee.h"
 
 namespace love
 {
@@ -98,7 +97,7 @@ public:
 	static void bindDefaultCanvas();
 
 private:
-	friend class PixelEffect;
+	friend class Shader;
 	GLuint getTextureName() const
 	{
 		return img;

src/modules/graphics/opengl/Graphics.cpp

@@ -45,8 +45,6 @@ Graphics::Graphics()
 	, userMatrices(0)
 {
 	currentWindow = love::window::sdl::Window::getSingleton();
-
-	resetBoundTexture();
 }
 
 Graphics::~Graphics()
@@ -116,6 +114,8 @@ bool Graphics::setMode(int width, int height, bool fullscreen, bool vsync, int f
 	// Unload all volatile objects. These must be reloaded after
 	// the display mode change.
 	Volatile::unloadAll();
+	
+	uninitializeContext();
 
 	bool success = currentWindow->setWindow(width, height, fullscreen, vsync, fsaa);
 	// Regardless of failure, we'll have to set up OpenGL once again.
@@ -125,6 +125,8 @@ bool Graphics::setMode(int width, int height, bool fullscreen, bool vsync, int f
 
 	// Okay, setup OpenGL.
 
+	initializeContext();
+
 	// Enable blending
 	glEnable(GL_BLEND);
 
@@ -138,6 +140,7 @@ bool Graphics::setMode(int width, int height, bool fullscreen, bool vsync, int f
 
 	// Enable textures
 	glEnable(GL_TEXTURE_2D);
+	setActiveTextureUnit(0);
 
 	// Set the viewport to top-left corner
 	glViewport(0, 0, width, height);
@@ -190,7 +193,7 @@ void Graphics::reset()
 	DisplayState s;
 	discardStencil();
 	Canvas::bindDefaultCanvas();
-	PixelEffect::detach();
+	Shader::detach();
 	restoreState(s);
 }
 
@@ -450,20 +453,21 @@ Canvas *Graphics::newCanvas(int width, int height, Canvas::TextureType texture_t
 	return NULL; // never reached
 }
 
-PixelEffect *Graphics::newPixelEffect(const std::string &code)
+Shader *Graphics::newShader(const Shader::ShaderSources &sources)
 {
-	PixelEffect *effect = NULL;
+	Shader *shader = NULL;
 	try
 	{
-		effect = new PixelEffect(code);
+		shader = new Shader(sources);
 	}
-	catch(love::Exception &e)
+	catch(love::Exception &)
 	{
-		if (effect)
+		if (shader)
-			delete effect;
+			delete shader;
-		throw(e);
+		
+		throw;
 	}
-	return effect;
+	return shader;
 }
 
 void Graphics::setColor(const Color &c)
@@ -743,11 +747,10 @@ void Graphics::printf(const char *str, float x, float y, float wrap, AlignMode a
 
 void Graphics::point(float x, float y)
 {
-	glDisable(GL_TEXTURE_2D);
+	bindTexture(0);
 	glBegin(GL_POINTS);
 	glVertex2f(x, y);
 	glEnd();
-	glEnable(GL_TEXTURE_2D);
 }
 
 // Calculate line boundary points u1 and u2. Sketch:
@@ -941,7 +944,7 @@ void Graphics::polyline(const float *coords, size_t count)
 	// end get line vertex boundaries
 
 	// draw the core line
-	glDisable(GL_TEXTURE_2D);
+	bindTexture(0);
 	glEnableClientState(GL_VERTEX_ARRAY);
 	glVertexPointer(2, GL_FLOAT, 0, (const GLvoid *)vertices);
 	glDrawArrays(GL_TRIANGLE_STRIP, 0, count);
@@ -951,7 +954,6 @@ void Graphics::polyline(const float *coords, size_t count)
 		draw_overdraw(overdraw, count, pixel_size, looping);
 
 	glDisableClientState(GL_VERTEX_ARRAY);
-	glEnable(GL_TEXTURE_2D);
 
 	// cleanup
 	delete[] vertices;
@@ -1035,12 +1037,11 @@ void Graphics::arc(DrawMode mode, float x, float y, float radius, float angle1,
 	}
 	else
 	{
-		glDisable(GL_TEXTURE_2D);
+		bindTexture(0);
 		glEnableClientState(GL_VERTEX_ARRAY);
 		glVertexPointer(2, GL_FLOAT, 0, (const GLvoid *) coords);
 		glDrawArrays(GL_TRIANGLE_FAN, 0, points + 2);
 		glDisableClientState(GL_VERTEX_ARRAY);
-		glEnable(GL_TEXTURE_2D);
 	}
 
 	delete[] coords;
@@ -1059,12 +1060,11 @@ void Graphics::polygon(DrawMode mode, const float *coords, size_t count)
 	}
 	else
 	{
-		glDisable(GL_TEXTURE_2D);
+		bindTexture(0);
 		glEnableClientState(GL_VERTEX_ARRAY);
 		glVertexPointer(2, GL_FLOAT, 0, (const GLvoid *)coords);
 		glDrawArrays(GL_POLYGON, 0, count/2-1); // opengl will close the polygon for us
 		glDisableClientState(GL_VERTEX_ARRAY);
-		glEnable(GL_TEXTURE_2D);
 	}
 }
 

src/modules/graphics/opengl/Graphics.h

@@ -26,7 +26,7 @@
 #include <cmath>
 
 // OpenGL
-#include "GLee.h"
+#include "OpenGL.h"
 
 // LOVE
 #include "graphics/Graphics.h"
@@ -37,14 +37,13 @@
 
 #include "window/Window.h"
 
-#include "OpenGL.h"
 #include "Font.h"
 #include "Image.h"
 #include "Quad.h"
 #include "SpriteBatch.h"
 #include "ParticleSystem.h"
 #include "Canvas.h"
-#include "PixelEffect.h"
+#include "Shader.h"
 
 namespace love
 {
@@ -271,7 +270,7 @@ public:
 
 	Canvas *newCanvas(int width, int height, Canvas::TextureType texture_type = Canvas::TYPE_NORMAL);
 
-	PixelEffect *newPixelEffect(const std::string &code);
+	Shader *newShader(const Shader::ShaderSources &sources);
 
 	/**
 	 * Sets the foreground color.

src/modules/graphics/opengl/Image.h

@@ -28,10 +28,8 @@
 #include "image/ImageData.h"
 #include "graphics/Image.h"
 
-#include "OpenGL.h"
-
 // OpenGL
-#include "GLee.h"
+#include "OpenGL.h"
 
 namespace love
 {
@@ -127,7 +125,7 @@ private:
 
 	void drawv(const Matrix &t, const vertex *v) const;
 
-	friend class PixelEffect;
+	friend class Shader;
 	GLuint getTextureName() const
 	{
 		return texture;

src/modules/graphics/opengl/OpenGL.cpp

@@ -18,7 +18,10 @@
  * 3. This notice may not be removed or altered from any source distribution.
  **/
 
+#include <vector>
+#include <algorithm>
 #include "OpenGL.h"
+#include "common/Exception.h"
 
 namespace love
 {
@@ -27,33 +30,160 @@ namespace graphics
 namespace opengl
 {
 
-static GLuint boundTexture = 0;
+static bool contextInitialized = false;
 
-void resetBoundTexture()
+static int curTextureUnit = 0;
+static std::vector<GLuint> textureUnits;
+
+void initializeContext()
 {
-	// OpenGL might not be initialized yet, so we can't do a real reset
+	if (contextInitialized)
-	boundTexture = 0;
+		return;
+
+	contextInitialized = true;
+
+	textureUnits.clear();
+
+	// initialize multiple texture unit support, if available
+	if (GLEE_VERSION_1_3 || GLEE_ARB_multitexture)
+	{
+		GLint maxtextureunits;
+		glGetIntegerv(GL_MAX_TEXTURE_UNITS, &maxtextureunits);
+
+		// shaders/GL2.0 added "Texture Image Units." Total max texture units is the greater of the two
+		if (GLEE_VERSION_2_0 || GLEE_ARB_vertex_shader)
+		{
+			GLint maxtextureimageunits;
+			glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxtextureimageunits);
+			maxtextureunits = std::max(maxtextureunits, maxtextureimageunits);
+		}
+
+		textureUnits.resize(maxtextureunits, 0);
+
+		GLenum curgltextureunit;
+		glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint *)&curgltextureunit);
+
+		curTextureUnit = curgltextureunit - GL_TEXTURE0;
+
+		// retrieve currently bound textures for each texture unit
+		for (size_t i = 0; i < textureUnits.size(); ++i)
+		{
+			if (GLEE_VERSION_1_3)
+				glActiveTexture(GL_TEXTURE0 + i);
+			else
+				glActiveTextureARB(GL_TEXTURE0 + i);
+
+			glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint *) &textureUnits[i]);
+		}
+
+		if (GLEE_VERSION_1_3)
+			glActiveTexture(curgltextureunit);
+		else
+			glActiveTextureARB(curgltextureunit);
+	}
+	else
+	{
+		// multitexturing not supported, so we only have 1 texture unit
+		textureUnits.resize(1, 0);
+		curTextureUnit = 0;
+
+		glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint *) &textureUnits[0]);
+	}
+
+	// Set the 'default' texture (id 0) as a repeating white pixel.
+	// Otherwise, texture2D inside a shader would return black when drawing graphics primitives,
+	// which would create the need to use different "passthrough" shaders for untextured primitives vs images.
+
+	GLuint curtexture = textureUnits[curTextureUnit];
+	bindTexture(0);
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+	GLubyte pixel = 255;
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8, 1, 1, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, &pixel);
+
+	bindTexture(curtexture);
 }
 
-void bindTexture(GLuint texture, bool override)
+void uninitializeContext()
 {
-	if (texture != boundTexture || texture == 0 || override)
+	contextInitialized = false;
+}
+
+void setActiveTextureUnit(int textureunit)
+{
+	initializeContext();
+
+	if (textureunit < 0 || (size_t) textureunit >= textureUnits.size())
+		throw love::Exception("Invalid texture unit index (%d).", textureunit);
+
+	if (textureunit != curTextureUnit)
 	{
-		boundTexture = texture;
+		if (GLEE_VERSION_1_3)
+			glActiveTexture(GL_TEXTURE0 + textureunit);
+		else if (GLEE_ARB_multitexture)
+			glActiveTextureARB(GL_TEXTURE0 + textureunit);
+		else
+			throw love::Exception("Multitexturing not supported.");
+	}
+
+	curTextureUnit = textureunit;
+}
+
+void bindTexture(GLuint texture)
+{
+	initializeContext();
+
+	if (texture != textureUnits[curTextureUnit])
+	{
+		textureUnits[curTextureUnit] = texture;
 		glBindTexture(GL_TEXTURE_2D, texture);
 	}
 }
 
+void bindTextureToUnit(GLuint texture, int textureunit, bool restoreprev)
+{
+	initializeContext();
+
+	if (textureunit < 0 || (size_t) textureunit >= textureUnits.size())
+		throw love::Exception("Invalid texture unit index.");
+
+	if (texture != textureUnits[textureunit])
+	{
+		int oldtextureunit = curTextureUnit;
+		setActiveTextureUnit(textureunit);
+
+		textureUnits[textureunit] = texture;
+		glBindTexture(GL_TEXTURE_2D, texture);
+
+		if (restoreprev)
+			setActiveTextureUnit(oldtextureunit);
+	}
+}
+
 void deleteTexture(GLuint texture)
 {
-	if (texture == boundTexture)
+	initializeContext();
-		boundTexture = 0;
+
+	// glDeleteTextures binds texture 0 to all texture units the deleted texture was bound to
+	std::vector<GLuint>::iterator it;
+	for (it = textureUnits.begin(); it != textureUnits.end(); ++it)
+	{
+		if (*it == texture)
+			*it = 0;
+	}
 
 	glDeleteTextures(1, &texture);
 }
 
 void setTextureFilter(const graphics::Image::Filter &f)
 {
+	initializeContext();
+
 	GLint gmin, gmag;
 
 	if (f.mipmap == Image::FILTER_NONE)
@@ -95,6 +225,8 @@ void setTextureFilter(const graphics::Image::Filter &f)
 
 graphics::Image::Filter getTextureFilter()
 {
+	initializeContext();
+
 	GLint gmin, gmag;
 	glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, &gmin);
 	glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, &gmag);
@@ -144,6 +276,8 @@ graphics::Image::Filter getTextureFilter()
 
 void setTextureWrap(const graphics::Image::Wrap &w)
 {
+	initializeContext();
+
 	GLint gs, gt;
 
 	switch (w.s)
@@ -174,6 +308,8 @@ void setTextureWrap(const graphics::Image::Wrap &w)
 
 graphics::Image::Wrap getTextureWrap()
 {
+	initializeContext();
+
 	GLint gs, gt;
 
 	glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, &gs);

src/modules/graphics/opengl/OpenGL.h

@@ -18,8 +18,8 @@
  * 3. This notice may not be removed or altered from any source distribution.
  **/
 
-#ifndef LOVE_COMMON_OPENGL_H
+#ifndef LOVE_GRAPHICS_OPENGL_OPENGL_H
-#define LOVE_COMMON_OPENGL_H
+#define LOVE_GRAPHICS_OPENGL_OPENGL_H
 
 #include "GLee.h"
 #include "graphics/Image.h"
@@ -31,43 +31,61 @@ namespace graphics
 namespace opengl
 {
 
-// resets the stored bound texture id
+/**
-void resetBoundTexture();
+ * Initializes some required context state,
+ * based on current and default OpenGL state.
+ **/
+void initializeContext();
+
+/**
+ * Marks current context state as invalid.
+ **/
+void uninitializeContext();
+
+/**
+ * Helper for setting the active texture unit.
+ *
+ * @param textureunit Index in the range of [0, maxtextureunits-1]
+ **/
+void setActiveTextureUnit(int textureunit);
 
 /**
  * Helper for binding an OpenGL texture.
  * Makes sure we aren't redundantly binding textures.
- * @param texture The texture to bind.
- * @param override Overrides the checks to guarantee texture bind
  **/
-void bindTexture(GLuint texture, bool override = false);
+void bindTexture(GLuint texture);
+
+/**
+ * Helper for binding a texture to a specific texture unit.
+ *
+ * @param textureunit Index in the range of [0, maxtextureunits-1]
+ * @param resoreprev Restore previously bound texture unit when done.
+ **/
+void bindTextureToUnit(GLuint texture, int textureunit, bool restoreprev);
 
 /**
  * Helper for deleting an OpenGL texture.
  * Cleans up if the texture is currently bound.
- * @param texture The texture to delete.
  **/
 void deleteTexture(GLuint texture);
 
 /**
- * Sets the image filter mode for the currently bound texture
+ * Sets the image filter mode for the currently bound texture.
- * @param f The image filter to set
  */
 void setTextureFilter(const graphics::Image::Filter &f);
 
 /**
- * Returns the image filter mode for the currently bound texture
+ * Returns the image filter mode for the currently bound texture.
  */
 graphics::Image::Filter getTextureFilter();
 
 /**
- * Sets the image wrap mode for the currently bound texture
+ * Sets the image wrap mode for the currently bound texture.
- * @param w The wrap mode to set
  */
 void setTextureWrap(const graphics::Image::Wrap &w);
 
 /**
- * Returns the image wrap mode for the currently bound texture
+ * Returns the image wrap mode for the currently bound texture.
  */
 graphics::Image::Wrap getTextureWrap();
 

src/modules/graphics/opengl/ParticleSystem.cpp

@@ -22,7 +22,7 @@
 
 #include "common/math.h"
 
-#include "GLee.h"
+#include "OpenGL.h"
 #include <cmath>
 #include <cstdlib>
 

src/modules/graphics/opengl/PixelEffect.cpp

@@ -1,346 +0,0 @@
-/**
- * Copyright (c) 2006-2012 LOVE Development Team
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.  In no event will the authors be held liable for any damages
- * arising from the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- *    claim that you wrote the original software. If you use this software
- *    in a product, an acknowledgment in the product documentation would be
- *    appreciated but is not required.
- * 2. Altered source versions must be plainly marked as such, and must not be
- *    misrepresented as being the original software.
- * 3. This notice may not be removed or altered from any source distribution.
- **/
-
-#include "PixelEffect.h"
-#include "GLee.h"
-#include "Graphics.h"
-
-namespace
-{
-// temporarily attaches a shader program (for setting uniforms, etc)
-// reattaches the originally active program when destroyed
-struct TemporaryAttacher
-{
-	TemporaryAttacher(love::graphics::opengl::PixelEffect *sp) : s(sp)
-	{
-		glGetIntegerv(GL_CURRENT_PROGRAM, &activeProgram);
-		s->attach();
-	}
-	~TemporaryAttacher()
-	{
-		glUseProgram(activeProgram);
-	}
-	love::graphics::opengl::PixelEffect *s;
-	GLint activeProgram;
-};
-} // anonymous namespace
-
-namespace love
-{
-namespace graphics
-{
-namespace opengl
-{
-
-PixelEffect *PixelEffect::current = NULL;
-
-std::vector<bool> PixelEffect::_unit_available;
-
-GLint PixelEffect::getTextureUnit(const std::string &name)
-{
-	std::map<std::string, GLint>::const_iterator it = _texture_unit_pool.find(name);
-
-	if (it != _texture_unit_pool.end())
-		return it->second;
-
-	GLint unit = -1;
-	for (int i = 1; i < _unit_available.size(); ++i)
-	{
-		if (_unit_available[i])
-		{
-			unit = i;
-			break;
-		}
-	}
-
-	if (unit == -1)
-		throw love::Exception("No more texture units available");
-
-	_unit_available[unit] = false;
-	_texture_unit_pool[name] = unit;
-	return unit;
-}
-
-PixelEffect::PixelEffect(const std::string &code)
-	: _program(0)
-	, _code(code)
-{
-	if (_unit_available.empty())
-	{
-		GLint max_units;
-		glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_units);
-		_unit_available.resize(max_units, true);
-		_unit_available[0] = false;
-	}
-	loadVolatile();
-}
-
-bool PixelEffect::loadVolatile()
-{
-	_program = glCreateProgram();
-	// should only fail if this is called between a glBegin()/glEnd() pair
-	if (_program == 0)
-		throw love::Exception("Cannot create shader program object.");
-
-	GLuint shader = glCreateShader(GL_FRAGMENT_SHADER);
-	// should only fail if this is called between a glBegin()/glEnd() pair
-	if (shader == 0)
-	{
-		glDeleteProgram(_program);
-		throw love::Exception("Cannot create shader object.");
-	}
-
-	// compile fragment shader code
-	const char *src = _code.c_str();
-	GLint strlen = _code.length();
-	glShaderSource(shader, 1, (const GLchar **)&src, &strlen);
-	glCompileShader(shader);
-
-	GLint compile_ok;
-	glGetShaderiv(shader, GL_COMPILE_STATUS, &compile_ok);
-	if (GL_FALSE == compile_ok)
-	{
-		// get compiler error
-		glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &strlen);
-		char *error_str = new char[strlen];
-		glGetShaderInfoLog(shader, strlen, NULL, error_str);
-		std::string tmp(error_str);
-
-		// cleanup before throw
-		delete[] error_str;
-		glDeleteShader(shader);
-		glDeleteProgram(_program);
-
-		// XXX: errorlog may contain escape sequences.
-		throw love::Exception("Cannot compile shader:\n%s", tmp.c_str());
-	}
-
-	// link fragment shader
-	GLint link_ok;
-	glAttachShader(_program, shader);
-	glLinkProgram(_program);
-	glGetProgramiv(_program, GL_LINK_STATUS, &link_ok);
-	if (GL_FALSE == link_ok)
-	{
-		// this should not happen if compiling is ok, but one can never be too careful
-		// get linker error
-		std::string tmp(getWarnings());
-
-		// cleanup before throw
-		glDeleteShader(shader);
-		glDeleteProgram(_program);
-		throw love::Exception("Cannot compile shader:\n%s", tmp.c_str());
-	}
-
-	glDeleteShader(shader);
-
-	return true;
-}
-
-PixelEffect::~PixelEffect()
-{
-	unloadVolatile();
-}
-
-void PixelEffect::unloadVolatile()
-{
-	glDeleteProgram(_program);
-}
-
-std::string PixelEffect::getGLSLVersion()
-{
-	// GL_SHADING_LANGUAGE_VERSION may not be available in OpenGL < 2.0.
-	const char *tmp = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
-	if (NULL == tmp)
-		return "0.0";
-
-	// the version string always begins with a version number of the format
-	//   major_number.minor_number
-	// or
-	//   major_number.minor_number.release_number
-	// we can keep release_number, since it does not affect the check below.
-	std::string versionString(tmp);
-	size_t minorEndPos = versionString.find(' ');
-	return versionString.substr(0, minorEndPos);
-}
-
-
-bool PixelEffect::isSupported()
-{
-	return GLEE_VERSION_2_0 && getGLSLVersion() >= "1.2";
-}
-
-std::string PixelEffect::getWarnings() const
-{
-	GLint strlen, nullpos;
-	glGetProgramiv(_program, GL_INFO_LOG_LENGTH, &strlen);
-	char *temp_str = new char[strlen+1];
-	// be extra sure that the error string will be 0-terminated
-	memset(temp_str, '\0', strlen+1);
-	glGetProgramInfoLog(_program, strlen, &nullpos, temp_str);
-	temp_str[nullpos] = '\0';
-
-	std::string warnings(temp_str);
-	delete[] temp_str;
-	return warnings;
-}
-
-void PixelEffect::attach()
-{
-	glUseProgram(_program);
-	current = this;
-}
-
-void PixelEffect::detach()
-{
-	glUseProgram(0);
-	current = NULL;
-}
-
-void PixelEffect::sendFloat(const std::string &name, int size, const GLfloat *vec, int count)
-{
-	TemporaryAttacher attacher(this);
-	GLint location = getUniformLocation(name);
-
-	if (size < 1 || size > 4)
-	{
-		throw love::Exception("Invalid variable size: %d (expected 1-4).", size);
-	}
-
-	switch (size)
-	{
-	case 4:
-		glUniform4fv(location, count, vec);
-		break;
-	case 3:
-		glUniform3fv(location, count, vec);
-		break;
-	case 2:
-		glUniform2fv(location, count, vec);
-		break;
-	case 1:
-	default:
-		glUniform1fv(location, count, vec);
-		break;
-	}
-
-	// throw error if needed
-	checkSetUniformError();
-}
-
-void PixelEffect::sendMatrix(const std::string &name, int size, const GLfloat *m, int count)
-{
-	TemporaryAttacher attacher(this);
-	GLint location = getUniformLocation(name);
-
-	if (size < 2 || size > 4)
-	{
-		throw love::Exception("Invalid matrix size: %dx%d "
-							  "(can only set 2x2, 3x3 or 4x4 matrices).", size,size);
-	}
-
-	switch (size)
-	{
-	case 4:
-		glUniformMatrix4fv(location, count, GL_FALSE, m);
-		break;
-	case 3:
-		glUniformMatrix3fv(location, count, GL_FALSE, m);
-		break;
-	case 2:
-	default:
-		glUniformMatrix2fv(location, count, GL_FALSE, m);
-		break;
-	}
-
-	// throw error if needed
-	checkSetUniformError();
-}
-
-void PixelEffect::sendImage(const std::string &name, const Image &image)
-{
-	GLint texture_unit = getTextureUnit(name);
-
-	TemporaryAttacher attacher(this);
-	GLint location = getUniformLocation(name);
-
-	glActiveTexture(GL_TEXTURE0 + texture_unit);
-	bindTexture(image.getTextureName(), true); // guarantee it gets bound
-	glUniform1i(location, texture_unit);
-
-	// reset texture unit
-	glActiveTexture(GL_TEXTURE0);
-
-	// throw error if needed
-	checkSetUniformError();
-}
-
-void PixelEffect::sendCanvas(const std::string &name, const Canvas &canvas)
-{
-	GLint texture_unit = getTextureUnit(name);
-
-	TemporaryAttacher attacher(this);
-	GLint location = getUniformLocation(name);
-
-	glActiveTexture(GL_TEXTURE0 + texture_unit);
-	bindTexture(canvas.getTextureName(), true); // guarantee it gets bound
-	glUniform1i(location, texture_unit);
-
-	// reset texture unit
-	glActiveTexture(GL_TEXTURE0);
-
-	// throw error if needed
-	checkSetUniformError();
-}
-
-GLint PixelEffect::getUniformLocation(const std::string &name)
-{
-	std::map<std::string, GLint>::const_iterator it = _uniforms.find(name);
-	if (it != _uniforms.end())
-		return it->second;
-
-	GLint location = glGetUniformLocation(_program, name.c_str());
-	if (location == -1)
-	{
-		throw love::Exception(
-			"Cannot get location of shader variable `%s'.\n"
-			"A common error is to define but not use the variable.", name.c_str());
-	}
-
-	_uniforms[name] = location;
-	return location;
-}
-
-void PixelEffect::checkSetUniformError()
-{
-	GLenum error_code = glGetError();
-	if (GL_INVALID_OPERATION == error_code)
-	{
-		throw love::Exception(
-			"Invalid operation:\n"
-			"- Trying to send the wrong value type to shader variable, or\n"
-			"- Trying to send array values with wrong dimension, or\n"
-			"- Invalid variable name.");
-	}
-}
-
-} // opengl
-} // graphics
-} // love

src/modules/graphics/opengl/PixelEffect.h

@@ -1,80 +0,0 @@
-/**
- * Copyright (c) 2006-2012 LOVE Development Team
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.  In no event will the authors be held liable for any damages
- * arising from the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- *    claim that you wrote the original software. If you use this software
- *    in a product, an acknowledgment in the product documentation would be
- *    appreciated but is not required.
- * 2. Altered source versions must be plainly marked as such, and must not be
- *    misrepresented as being the original software.
- * 3. This notice may not be removed or altered from any source distribution.
- **/
-
-#ifndef LOVE_GRAPHICS_EFFECT_H
-#define LOVE_GRAPHICS_EFFECT_H
-
-#include "common/Object.h"
-#include <string>
-#include <map>
-#include <vector>
-#include "OpenGL.h"
-#include "Image.h"
-#include "Canvas.h"
-
-namespace love
-{
-namespace graphics
-{
-namespace opengl
-{
-// A fragment shader
-class PixelEffect : public Object, public Volatile
-{
-public:
-	PixelEffect(const std::string &code);
-	virtual ~PixelEffect();
-	std::string getWarnings() const;
-
-	virtual bool loadVolatile();
-	virtual void unloadVolatile();
-
-	void attach();
-	static void detach();
-	static std::string getGLSLVersion();
-	static bool isSupported();
-
-	static PixelEffect *current;
-
-	void sendFloat(const std::string &name, int size, const GLfloat *vec, int count);
-	void sendMatrix(const std::string &name, int size, const GLfloat *m, int count);
-	void sendImage(const std::string &name, const Image &image);
-	void sendCanvas(const std::string &name, const Canvas &canvas);
-
-private:
-	GLint getUniformLocation(const std::string &name);
-	void checkSetUniformError();
-	GLuint _program;
-	std::string _code; // volatile and stuff
-
-	// uniform location buffer
-	std::map<std::string, GLint> _uniforms;
-
-	// texture unit pool for setting images
-	std::map<std::string, GLint> _texture_unit_pool;
-	GLint getTextureUnit(const std::string &name);
-	static std::vector<bool> _unit_available;
-};
-
-} // opengl
-} // graphics
-} // love
-
-#endif // LOVE_GRAPHICS_EFFECT_H

src/modules/graphics/opengl/Quad.cpp

@@ -21,8 +21,8 @@
 #include "Quad.h"
 #include "common/Matrix.h"
 
-// GLee
+// OpenGL
-#include "GLee.h"
+#include "OpenGL.h"
 
 // STD
 #include <cstring> // For memcpy

src/modules/graphics/opengl/Shader.cpp

@@ -0,0 +1,455 @@
+/**
+ * Copyright (c) 2006-2012 LOVE Development Team
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ **/
+
+#include <algorithm>
+
+#include "Shader.h"
+#include "Graphics.h"
+
+namespace love
+{
+namespace graphics
+{
+namespace opengl
+{
+
+namespace
+{
+	// temporarily attaches a shader program (for setting uniforms, etc)
+	// reattaches the originally active program when destroyed
+	struct TemporaryAttacher
+	{
+		TemporaryAttacher(Shader *shader)
+		: curShader(shader)
+		, prevShader(Shader::current)
+		{
+			curShader->attach(true);
+		}
+
+		~TemporaryAttacher()
+		{
+			if (prevShader != NULL)
+				prevShader->attach();
+			else
+				Shader::detach();
+		}
+
+		Shader *curShader;
+		Shader *prevShader;
+	};
+} // anonymous namespace
+
+
+Shader *Shader::current = NULL;
+
+GLint Shader::maxTextureUnits = 0;
+std::vector<int> Shader::textureCounters;
+
+Shader::Shader(const ShaderSources &sources)
+	: shaderSources(sources)
+	, program(0)
+{
+	if (shaderSources.empty())
+		throw love::Exception("Cannot create shader: no source code!");
+
+	GLint maxtexunits;
+	glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxtexunits);
+	maxTextureUnits = std::max(maxtexunits - 1, 0);
+
+	// initialize global texture id counters if needed
+	if (textureCounters.size() < (size_t) maxTextureUnits)
+		textureCounters.resize(maxTextureUnits, 0);
+
+	// load shader source and create program object
+	loadVolatile();
+}
+
+Shader::~Shader()
+{
+	if (current == this)
+		detach();
+
+	unloadVolatile();
+}
+
+GLuint Shader::compileCode(ShaderType type, const std::string &code)
+{
+	GLenum glshadertype;
+	const char *shadertypename = NULL;
+
+	switch (type)
+	{
+	case TYPE_VERTEX:
+		glshadertype = GL_VERTEX_SHADER;
+		shadertypename = "vertex";
+		break;
+	case TYPE_FRAGMENT:
+		glshadertype = GL_FRAGMENT_SHADER;
+		shadertypename = "fragment";
+		break;
+	default:
+		throw love::Exception("Cannot create shader object: unknown shader type.");
+		break;
+	}
+
+	// clear existing errors
+	while (glGetError() != GL_NO_ERROR);
+
+	GLuint shaderid = glCreateShader(glshadertype);
+
+	if (shaderid == 0) // oh no!
+	{
+		GLenum err = glGetError();
+
+		if (err == GL_INVALID_ENUM) // invalid or unsupported shader type
+			throw love::Exception("Cannot create %s shader object: %s shaders not supported.", shadertypename, shadertypename);
+		else // other errors should only happen between glBegin() and glEnd()
+			throw love::Exception("Cannot create %s shader object.", shadertypename);
+	}
+
+	const char *src = code.c_str();
+	size_t srclen = code.length();
+	glShaderSource(shaderid, 1, (const GLchar **)&src, (GLint *)&srclen);
+
+	glCompileShader(shaderid);
+
+	GLint status;
+	glGetShaderiv(shaderid, GL_COMPILE_STATUS, &status);
+
+	if (status == GL_FALSE)
+	{
+		GLint infologlen;
+		glGetShaderiv(shaderid, GL_INFO_LOG_LENGTH, &infologlen);
+
+		GLchar *errorlog = new GLchar[infologlen + 1];
+		glGetShaderInfoLog(shaderid, infologlen, NULL, errorlog);
+
+		std::string tmp(errorlog);
+
+		delete[] errorlog;
+		glDeleteShader(shaderid);
+
+		throw love::Exception("Cannot compile %s shader code:\n%s", shadertypename, tmp.c_str());
+	}
+
+	return shaderid;
+}
+
+void Shader::createProgram(const std::vector<GLuint> &shaderids)
+{
+	program = glCreateProgram();
+	if (program == 0) // should only fail when called between glBegin() and glEnd()
+		throw love::Exception("Cannot create shader program object.");
+
+	std::vector<GLuint>::const_iterator it;
+	for (it = shaderids.begin(); it != shaderids.end(); ++it)
+		glAttachShader(program, *it);
+
+	glLinkProgram(program);
+
+	for (it = shaderids.begin(); it != shaderids.end(); ++it)
+		glDeleteShader(*it); // flag shaders for auto-deletion when program object is deleted
+
+	GLint status;
+	glGetProgramiv(program, GL_LINK_STATUS, &status);
+
+	if (status == GL_FALSE)
+	{
+		const std::string warnings = getWarnings();
+		glDeleteProgram(program);
+
+		throw love::Exception("Cannot link shader program object:\n%s", warnings.c_str());
+	}
+}
+
+bool Shader::loadVolatile()
+{
+	// zero out active texture list
+	activeTextureUnits.clear();
+	activeTextureUnits.insert(activeTextureUnits.begin(), maxTextureUnits, 0);
+
+	std::vector<GLuint> shaderids;
+
+	ShaderSources::const_iterator source;
+	for (source = shaderSources.begin(); source != shaderSources.end(); ++source)
+	{
+		GLuint shaderid = compileCode(source->first, source->second);
+		shaderids.push_back(shaderid);
+	}
+
+	if (shaderids.empty())
+		throw love::Exception("Cannot create shader: no valid source code!");
+
+	createProgram(shaderids);
+
+	if (current == this)
+	{
+		current = NULL; // make sure glUseProgram gets called
+		attach();
+	}
+
+	return true;
+}
+
+void Shader::unloadVolatile()
+{
+	if (current == this)
+		glUseProgram(0);
+
+	if (program != 0)
+		glDeleteProgram(program);
+
+	program = 0;
+
+	// decrement global texture id counters for texture units which had textures bound from this shader
+	for (size_t i = 0; i < activeTextureUnits.size(); ++i)
+	{
+		if (activeTextureUnits[i] > 0)
+			textureCounters[i] = std::max(textureCounters[i] - 1, 0);
+	}
+
+	// active texture list is probably invalid, clear it
+	activeTextureUnits.clear();
+	activeTextureUnits.insert(activeTextureUnits.begin(), maxTextureUnits, 0);
+
+	// same with uniform location list
+	uniforms.clear();
+}
+
+std::string Shader::getWarnings() const
+{
+	GLint strlen, nullpos;
+	glGetProgramiv(program, GL_INFO_LOG_LENGTH, &strlen);
+	char *tempstr = new char[strlen+1];
+	// be extra sure that the error string will be 0-terminated
+	memset(tempstr, '\0', strlen+1);
+	glGetProgramInfoLog(program, strlen, &nullpos, tempstr);
+	tempstr[nullpos] = '\0';
+
+	std::string warnings(tempstr);
+	delete[] tempstr;
+	return warnings;
+}
+
+void Shader::attach(bool temporary)
+{
+	if (current != this)
+		glUseProgram(program);
+
+	current = this;
+
+	if (!temporary)
+	{
+		// make sure all sent textures are properly bound to their respective texture units
+		// note: list potentially contains texture ids of deleted/invalid textures!
+		for (size_t i = 0; i < activeTextureUnits.size(); ++i)
+		{
+			if (activeTextureUnits[i] > 0)
+				bindTextureToUnit(activeTextureUnits[i], i + 1, false);
+		}
+		setActiveTextureUnit(0);
+	}
+}
+
+void Shader::detach()
+{
+	if (current != NULL)
+		glUseProgram(0);
+
+	current = NULL;
+}
+
+void Shader::sendFloat(const std::string &name, int size, const GLfloat *vec, int count)
+{
+	TemporaryAttacher attacher(this);
+	GLint location = getUniformLocation(name);
+
+	if (size < 1 || size > 4)
+		throw love::Exception("Invalid variable size: %d (expected 1-4).", size);
+
+	switch (size)
+	{
+	case 4:
+		glUniform4fv(location, count, vec);
+		break;
+	case 3:
+		glUniform3fv(location, count, vec);
+		break;
+	case 2:
+		glUniform2fv(location, count, vec);
+		break;
+	case 1:
+	default:
+		glUniform1fv(location, count, vec);
+		break;
+	}
+
+	// throw error if needed
+	checkSetUniformError();
+}
+
+void Shader::sendMatrix(const std::string &name, int size, const GLfloat *m, int count)
+{
+	TemporaryAttacher attacher(this);
+	GLint location = getUniformLocation(name);
+
+	if (size < 2 || size > 4)
+	{
+		throw love::Exception("Invalid matrix size: %dx%d "
+							  "(can only set 2x2, 3x3 or 4x4 matrices).", size,size);
+	}
+
+	switch (size)
+	{
+	case 4:
+		glUniformMatrix4fv(location, count, GL_FALSE, m);
+		break;
+	case 3:
+		glUniformMatrix3fv(location, count, GL_FALSE, m);
+		break;
+	case 2:
+	default:
+		glUniformMatrix2fv(location, count, GL_FALSE, m);
+		break;
+	}
+
+	// throw error if needed
+	checkSetUniformError();
+}
+
+void Shader::sendTexture(const std::string &name, GLuint texture)
+{
+	TemporaryAttacher attacher(this);
+	GLint location = getUniformLocation(name);
+	int textureunit = getTextureUnit(name);
+
+	// bind texture to assigned texture unit and send uniform to shader program
+	bindTextureToUnit(texture, textureunit, false);
+	glUniform1i(location, textureunit);
+
+	// reset texture unit
+	setActiveTextureUnit(0);
+
+	// throw error if needed
+	checkSetUniformError();
+
+	// increment global shader texture id counter for this texture unit, if we haven't already
+	if (activeTextureUnits[textureunit-1] == 0)
+		++textureCounters[textureunit-1];
+
+	// store texture id so it can be re-bound to the proper texture unit when necessary
+	activeTextureUnits[textureunit-1] = texture;
+}
+
+void Shader::sendImage(const std::string &name, const Image &image)
+{
+	sendTexture(name, image.getTextureName());
+}
+
+void Shader::sendCanvas(const std::string &name, const Canvas &canvas)
+{
+	sendTexture(name, canvas.getTextureName());
+}
+
+GLint Shader::getUniformLocation(const std::string &name)
+{
+	std::map<std::string, GLint>::const_iterator it = uniforms.find(name);
+	if (it != uniforms.end())
+		return it->second;
+
+	GLint location = glGetUniformLocation(program, name.c_str());
+	if (location == -1)
+	{
+		throw love::Exception(
+			"Cannot get location of shader variable `%s'.\n"
+			"A common error is to define but not use the variable.", name.c_str());
+	}
+
+	uniforms[name] = location;
+	return location;
+}
+
+int Shader::getTextureUnit(const std::string &name)
+{
+	std::map<std::string, GLint>::const_iterator it = textureUnitPool.find(name);
+
+	if (it != textureUnitPool.end())
+		return it->second;
+
+	int textureunit = 1;
+
+	// prefer texture units which are unused by all other shaders
+	std::vector<int>::iterator nextfreeunit = std::find(textureCounters.begin(), textureCounters.end(), 0);
+
+	if (nextfreeunit != textureCounters.end())
+		textureunit = std::distance(textureCounters.begin(), nextfreeunit) + 1; // we don't want to use unit 0
+	else
+	{
+		// no completely unused texture units exist, try to use next free slot in our own list
+		std::vector<GLuint>::iterator nexttexunit = std::find(activeTextureUnits.begin(), activeTextureUnits.end(), 0);
+
+		if (nexttexunit == activeTextureUnits.end())
+			throw love::Exception("No more texture units available for shader.");
+
+		textureunit = std::distance(activeTextureUnits.begin(), nexttexunit) + 1; // we don't want to use unit 0
+	}
+
+	textureUnitPool[name] = textureunit;
+	return textureunit;
+}
+
+void Shader::checkSetUniformError()
+{
+	GLenum error_code = glGetError();
+	if (GL_INVALID_OPERATION == error_code)
+	{
+		throw love::Exception(
+			"Invalid operation:\n"
+			"- Trying to send the wrong value type to shader variable, or\n"
+			"- Trying to send array values with wrong dimension, or\n"
+			"- Invalid variable name.");
+	}
+}
+
+std::string Shader::getGLSLVersion()
+{
+	// GL_SHADING_LANGUAGE_VERSION may not be available in OpenGL < 2.0.
+	const char *tmp = (const char *) glGetString(GL_SHADING_LANGUAGE_VERSION);
+	if (tmp == NULL)
+		return "0.0";
+
+	// the version string always begins with a version number of the format
+	//   major_number.minor_number
+	// or
+	//   major_number.minor_number.release_number
+	// we can keep release_number, since it does not affect the check below.
+	std::string versionstring(tmp);
+	size_t minorendpos = versionstring.find(' ');
+	return versionstring.substr(0, minorendpos);
+}
+
+bool Shader::isSupported()
+{
+	return GLEE_VERSION_2_0 && getGLSLVersion() >= "1.2";
+}
+
+} // opengl
+} // graphics
+} // love

src/modules/graphics/opengl/Shader.h

@@ -0,0 +1,159 @@
+/**
+ * Copyright (c) 2006-2012 LOVE Development Team
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ **/
+
+#ifndef LOVE_GRAPHICS_SHADER_H
+#define LOVE_GRAPHICS_SHADER_H
+
+#include "common/Object.h"
+#include <string>
+#include <map>
+#include <vector>
+#include "OpenGL.h"
+#include "Image.h"
+#include "Canvas.h"
+
+namespace love
+{
+namespace graphics
+{
+namespace opengl
+{
+// A GLSL shader
+class Shader : public Object, public Volatile
+{
+public:
+
+	// Pointer to currently active Shader.
+	static Shader *current;
+
+	enum ShaderType
+	{
+		TYPE_VERTEX,
+		TYPE_FRAGMENT,
+		TYPE_MAX_ENUM
+	};
+
+	// Type for a list of shader source codes in the form of sources[shadertype] = code
+	typedef std::map<ShaderType, std::string> ShaderSources;
+
+	/**
+	 * Creates a new Shader using a list of source codes.
+	 * Sources must contain either vertex or fragment shader code, or both.
+	 **/
+	Shader(const ShaderSources &sources);
+
+	virtual ~Shader();
+
+	// Implements Volatile
+	virtual bool loadVolatile();
+	virtual void unloadVolatile();
+
+	/**
+	 * Binds this Shader's program to be used when rendering.
+	 *
+	 * @param temporary True if we just want to send values to the shader with no intention of rendering.
+	 **/
+	void attach(bool temporary = false);
+
+	/**
+	 * Detach the currently bound Shader.
+	 * Causes the GPU rendering pipeline to use fixed functionality in place of shader programs.
+	 **/
+	static void detach();
+
+	/**
+	 * Returns any warnings this Shader may have generated.
+	 **/
+	std::string getWarnings() const;
+
+	/**
+	 * Send at least one float or vector value to this Shader as a uniform.
+	 *
+	 * @param name The name of the uniform variable in the source code.
+	 * @param size Number of elements in each vector to send.
+	 *             A value of 1 indicates a single-component vector (a float).
+	 * @param vec Pointer to the float or vector values.
+	 * @param count Number of float or vector values.
+	 **/
+	void sendFloat(const std::string &name, int size, const GLfloat *vec, int count);
+
+	/**
+	 * Send at least one matrix to this Shader as a uniform.
+	 *
+	 * @param name The name of the uniform variable in the source code.
+	 * @param size Number of rows/columns in the matrix.
+	 * @param m Pointer to the first element of the first matrix.
+	 * @param count Number of matrices to send.
+	 **/
+	void sendMatrix(const std::string &name, int size, const GLfloat *m, int count);
+
+	/**
+	 * Send an image to this Shader as a uniform.
+	 *
+	 * @param name The name of the uniform variable in the source code.
+	 **/
+	void sendImage(const std::string &name, const Image &image);
+
+	/**
+	 * Send a canvas to this Shader as a uniform.
+	 *
+	 * @param name The name of the uniform variable in the source code.
+	 **/
+	void sendCanvas(const std::string &name, const Canvas &canvas);
+
+	static std::string getGLSLVersion();
+	static bool isSupported();
+
+private:
+
+	GLint getUniformLocation(const std::string &name);
+	void checkSetUniformError();
+
+	GLuint compileCode(ShaderType type, const std::string &code);
+	void createProgram(const std::vector<GLuint> &shaderids);
+
+	int getTextureUnit(const std::string &name);
+
+	void sendTexture(const std::string &name, GLuint texture);
+
+	// List of all shader code attached to this Shader
+	ShaderSources shaderSources;
+
+	GLuint program; // volatile
+
+	// Uniform location buffer map
+	std::map<std::string, GLint> uniforms;
+
+	// Texture unit pool for setting images
+	std::map<std::string, GLint> textureUnitPool; // textureUnitPool[name] = textureunit
+	std::vector<GLuint> activeTextureUnits; // activeTextureUnits[textureunit-1] = textureid
+
+	// Max GPU texture units available for sent images
+	static GLint maxTextureUnits;
+
+	// Counts total number of textures bound to each texture unit in all shaders
+	static std::vector<int> textureCounters;
+};
+
+} // opengl
+} // graphics
+} // love
+
+#endif // LOVE_GRAPHICS_SHADER_H

src/modules/graphics/opengl/SpriteBatch.cpp

@@ -23,6 +23,9 @@
 // STD
 #include <iostream>
 
+// OpenGL
+#include "OpenGL.h"
+
 // LOVE
 #include "Image.h"
 #include "Quad.h"
@@ -222,7 +225,9 @@ void SpriteBatch::draw(float x, float y, float angle, float sx, float sy, float
 
 	glDisableClientState(GL_VERTEX_ARRAY);
 	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-	glDisableClientState(GL_COLOR_ARRAY);
+
+	if (color)
+		glDisableClientState(GL_COLOR_ARRAY);
 
 	glPopMatrix();
 }

src/modules/graphics/opengl/SpriteBatch.h

@@ -34,9 +34,6 @@
 #include "graphics/Volatile.h"
 #include "graphics/Color.h"
 
-// OpenGL
-#include "GLee.h"
-
 namespace love
 {
 namespace graphics

src/modules/graphics/opengl/VertexBuffer.h

@@ -26,7 +26,7 @@
 #include "graphics/Volatile.h"
 
 // OpenGL
-#include "GLee.h"
+#include "OpenGL.h"
 
 namespace love
 {

src/modules/graphics/opengl/wrap_Graphics.cpp

@@ -19,7 +19,7 @@
  **/
 
 #include "wrap_Graphics.h"
-#include "GLee.h"
+#include "OpenGL.h"
 #include "graphics/DrawQable.h"
 #include "image/ImageData.h"
 #include "font/Rasterizer.h"
@@ -433,29 +433,50 @@ int w_newCanvas(lua_State *L)
 	return 1;
 }
 
-int w_newPixelEffect(lua_State *L)
+int w_newShader(lua_State *L)
 {
-	if (!PixelEffect::isSupported())
+	if (!Shader::isSupported())
-		return luaL_error(L, "Sorry, your graphics card does not support pixel effects.");
+		return luaL_error(L, "Sorry, your graphics card does not support shaders.");
 
 	try
 	{
-		luaL_checkstring(L, 1);
+		// clamp stack to 2 elements
+		lua_settop(L, 2);
 
 		luax_getfunction(L, "graphics", "_effectCodeToGLSL");
-		lua_pushvalue(L, 1);
-		lua_pcall(L, 1, 1, 0);
 
-		const char *code = lua_tostring(L, -1);
+		// push vertcode and fragcode strings to the top of the stack so they become arguments for the function
-		PixelEffect *effect = instance->newPixelEffect(code);
+		lua_pushvalue(L, 1);
-		luax_newtype(L, "PixelEffect", GRAPHICS_PIXELEFFECT_T, (void *)effect);
+		lua_pushvalue(L, 2);
+
+		// call effectCodeToGLSL, returned values will be at the top of the stack
+		lua_pcall(L, 2, 2, 0);
+
+		Shader::ShaderSources sources;
+
+		// vertex shader code
+		if (lua_isstring(L, -2))
+		{
+			std::string vertcode(luaL_checkstring(L, -2));
+			sources[Shader::TYPE_VERTEX] = vertcode;
+		}
+
+		// fragment shader code
+		if (lua_isstring(L, -1))
+		{
+			std::string fragcode(luaL_checkstring(L, -1));
+			sources[Shader::TYPE_FRAGMENT] = fragcode;
+		}
+
+		Shader *shader = instance->newShader(sources);
+		luax_newtype(L, "Shader", GRAPHICS_SHADER_T, (void *)shader);
 	}
 	catch(const love::Exception &e)
 	{
-		// memory is freed in Graphics::newPixelEffect
+		// memory is freed in Graphics::newShader
 		luax_getfunction(L, "graphics", "_transformGLSLErrorMessages");
 		lua_pushstring(L, e.what());
-		lua_pcall(L, 1,1, 0);
+		lua_pcall(L, 1, 1, 0);
 		const char *err = lua_tostring(L, -1);
 		return luaL_error(L, "%s", err);
 	}
@@ -798,26 +819,26 @@ int w_getCanvas(lua_State *L)
 	return 1;
 }
 
-int w_setPixelEffect(lua_State *L)
+int w_setShader(lua_State *L)
 {
 	if (lua_isnoneornil(L,1))
 	{
-		PixelEffect::detach();
+		Shader::detach();
 		return 0;
 	}
 
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
-	effect->attach();
+	shader->attach();
 	return 0;
 }
 
-int w_getPixelEffect(lua_State *L)
+int w_getShader(lua_State *L)
 {
-	PixelEffect *effect = PixelEffect::current;
+	Shader *shader = Shader::current;
-	if (effect)
+	if (shader)
 	{
-		effect->retain();
+		shader->retain();
-		luax_newtype(L, "PixelEffect", GRAPHICS_PIXELEFFECT_T, (void *) effect);
+		luax_newtype(L, "Shader", GRAPHICS_SHADER_T, (void *) shader);
 	}
 	else
 		lua_pushnil(L);
@@ -845,8 +866,8 @@ int w_isSupported(lua_State *L)
 			if (!Canvas::isHdrSupported())
 				supported = false;
 			break;
-		case Graphics::SUPPORT_PIXELEFFECT:
+		case Graphics::SUPPORT_SHADER:
-			if (!PixelEffect::isSupported())
+			if (!Shader::isSupported())
 				supported = false;
 			break;
 		case Graphics::SUPPORT_NPOT:
@@ -1265,7 +1286,7 @@ static const luaL_Reg functions[] =
 	{ "newSpriteBatch", w_newSpriteBatch },
 	{ "newParticleSystem", w_newParticleSystem },
 	{ "newCanvas", w_newCanvas },
-	{ "newPixelEffect", w_newPixelEffect },
+	{ "newShader", w_newShader },
 
 	{ "setColor", w_setColor },
 	{ "getColor", w_getColor },
@@ -1296,8 +1317,8 @@ static const luaL_Reg functions[] =
 	{ "setCanvas", w_setCanvas },
 	{ "getCanvas", w_getCanvas },
 
-	{ "setPixelEffect", w_setPixelEffect },
+	{ "setShader", w_setShader },
-	{ "getPixelEffect", w_getPixelEffect },
+	{ "getShader", w_getShader },
 
 	{ "isSupported", w_isSupported },
 
@@ -1358,7 +1379,7 @@ static const lua_CFunction types[] =
 	luaopen_spritebatch,
 	luaopen_particlesystem,
 	luaopen_canvas,
-	luaopen_pixeleffect,
+	luaopen_shader,
 	0
 };
 

src/modules/graphics/opengl/wrap_Graphics.h

@@ -28,7 +28,7 @@
 #include "wrap_SpriteBatch.h"
 #include "wrap_ParticleSystem.h"
 #include "wrap_Canvas.h"
-#include "wrap_PixelEffect.h"
+#include "wrap_Shader.h"
 #include "Graphics.h"
 
 namespace love
@@ -63,7 +63,7 @@ int w_newImageFont(lua_State *L);
 int w_newSpriteBatch(lua_State *L);
 int w_newParticleSystem(lua_State *L);
 int w_newCanvas(lua_State *L);  // comments in function
-int w_newPixelEffect(lua_State *L);
+int w_newShader(lua_State *L);
 int w_setColor(lua_State *L);
 int w_getColor(lua_State *L);
 int w_setBackgroundColor(lua_State *L);
@@ -90,7 +90,8 @@ int w_getMaxPointSize(lua_State *L);
 int w_newScreenshot(lua_State *L);
 int w_setCanvas(lua_State *L);
 int w_getCanvas(lua_State *L);
-int w_setPixelEffect(lua_State *L);
+int w_setShader(lua_State *L);
+int w_getShader(lua_State *L);
 int w_isSupported(lua_State *L);
 int w_draw(lua_State *L);
 int w_drawq(lua_State *L);

src/modules/graphics/opengl/wrap_Shader.cpp

@@ -18,12 +18,11 @@
  * 3. This notice may not be removed or altered from any source distribution.
  **/
 
-#include "wrap_PixelEffect.h"
+#include "wrap_Shader.h"
 #include "wrap_Image.h"
 #include "wrap_Canvas.h"
 #include <string>
 #include <iostream>
-using namespace std;
 
 namespace love
 {
@@ -32,46 +31,50 @@ namespace graphics
 namespace opengl
 {
 
-PixelEffect *luax_checkpixeleffect(lua_State *L, int idx)
+Shader *luax_checkshader(lua_State *L, int idx)
 {
-	return luax_checktype<PixelEffect>(L, idx, "PixelEffect", GRAPHICS_PIXELEFFECT_T);
+	return luax_checktype<Shader>(L, idx, "Shader", GRAPHICS_SHADER_T);
 }
 
-int w_PixelEffect_getWarnings(lua_State *L)
+int w_Shader_getWarnings(lua_State *L)
 {
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
-	lua_pushstring(L, effect->getWarnings().c_str());
+	lua_pushstring(L, shader->getWarnings().c_str());
 	return 1;
 }
 
-static int _sendScalars(lua_State *L, PixelEffect *effect, const char *name, int count)
+static int _sendScalars(lua_State *L, Shader *shader, const char *name, int count)
 {
 	float *values = new float[count];
 	for (int i = 0; i < count; ++i)
 	{
-		if (!lua_isnumber(L, 3 + i))
+		if (lua_isnumber(L, 3 + i))
+			values[i] = (float)lua_tonumber(L, 3 + i);
+		else if (lua_isboolean(L, 3 + i))
+			values[i] = (float)lua_toboolean(L, 3 + i);
+		else
 		{
 			delete[] values;
-			return luaL_typerror(L, 3 + i, "number");
+			return luaL_typerror(L, 3 + i, "number or boolean");
 		}
 		values[i] = (float)lua_tonumber(L, 3 + i);
 	}
 
 	try
 	{
-		effect->sendFloat(name, 1, values, count);
+		shader->sendFloat(name, 1, values, count);
 	}
 	catch(love::Exception &e)
 	{
 		delete[] values;
-		return luaL_error(L, e.what());
+		return luaL_error(L, "%s", e.what());
 	}
 
 	delete[] values;
 	return 0;
 }
 
-static int _sendVectors(lua_State *L, PixelEffect *effect, const char *name, int count)
+static int _sendVectors(lua_State *L, Shader *shader, const char *name, int count)
 {
 	size_t dimension = lua_objlen(L, 3);
 	float *values = new float[count * dimension];
@@ -93,46 +96,49 @@ static int _sendVectors(lua_State *L, PixelEffect *effect, const char *name, int
 		for (size_t k = 1; k <= dimension; ++k)
 		{
 			lua_rawgeti(L, 3 + i, k);
-			values[i * dimension + k - 1] = (float)lua_tonumber(L, -1);
+			if (lua_isboolean(L, -1))
+				values[i * dimension + k - 1] = (float)lua_toboolean(L, -1);
+			else
+				values[i * dimension + k - 1] = (float)lua_tonumber(L, -1);
 		}
 		lua_pop(L, int(dimension));
 	}
 
 	try
 	{
-		effect->sendFloat(name, dimension, values, count);
+		shader->sendFloat(name, dimension, values, count);
 	}
 	catch(love::Exception &e)
 	{
 		delete[] values;
-		return luaL_error(L, e.what());
+		return luaL_error(L, "%s", e.what());
 	}
 
 	delete[] values;
 	return 0;
 }
 
-int w_PixelEffect_sendFloat(lua_State *L)
+int w_Shader_sendFloat(lua_State *L)
 {
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
 	const char *name = luaL_checkstring(L, 2);
 	int count = lua_gettop(L) - 2;
 
 	if (count < 1)
 		return luaL_error(L, "No variable to send.");
 
-	if (lua_isnumber(L, 3))
+	if (lua_isnumber(L, 3) || lua_isboolean(L, 3))
-		return _sendScalars(L, effect, name, count);
+		return _sendScalars(L, shader, name, count);
 	else if (lua_istable(L, 3))
-		return _sendVectors(L, effect, name, count);
+		return _sendVectors(L, shader, name, count);
 
-	return luaL_typerror(L, 3, "number or table");
+	return luaL_typerror(L, 3, "number, boolean, or table");
 }
 
-int w_PixelEffect_sendMatrix(lua_State *L)
+int w_Shader_sendMatrix(lua_State *L)
 {
 	int count = lua_gettop(L) - 2;
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
 	const char *name = luaL_checkstring(L, 2);
 
 	if (!lua_istable(L, 3))
@@ -174,49 +180,49 @@ int w_PixelEffect_sendMatrix(lua_State *L)
 
 	try
 	{
-		effect->sendMatrix(name, dimension, values, count);
+		shader->sendMatrix(name, dimension, values, count);
 	}
 	catch(love::Exception &e)
 	{
 		delete[] values;
-		return luaL_error(L, e.what());
+		return luaL_error(L, "%s", e.what());
 	}
 
 	delete[] values;
 	return 0;
 }
 
-int w_PixelEffect_sendImage(lua_State *L)
+int w_Shader_sendImage(lua_State *L)
 {
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
 	const char *name = luaL_checkstring(L, 2);
 	Image *img = luax_checkimage(L, 3);
 
 	try
 	{
-		effect->sendImage(name, *img);
+		shader->sendImage(name, *img);
 	}
 	catch(love::Exception &e)
 	{
-		luaL_error(L, e.what());
+		luaL_error(L, "%s", e.what());
 	}
 
 	return 0;
 }
 
-int w_PixelEffect_sendCanvas(lua_State *L)
+int w_Shader_sendCanvas(lua_State *L)
 {
-	PixelEffect *effect = luax_checkpixeleffect(L, 1);
+	Shader *shader = luax_checkshader(L, 1);
 	const char *name = luaL_checkstring(L, 2);
 	Canvas *canvas = luax_checkcanvas(L, 3);
 
 	try
 	{
-		effect->sendCanvas(name, *canvas);
+		shader->sendCanvas(name, *canvas);
 	}
 	catch(love::Exception &e)
 	{
-		luaL_error(L, e.what());
+		luaL_error(L, "%s", e.what());
 	}
 
 	return 0;
@@ -225,17 +231,17 @@ int w_PixelEffect_sendCanvas(lua_State *L)
 
 static const luaL_Reg functions[] =
 {
-	{ "getWarnings", w_PixelEffect_getWarnings },
+	{ "getWarnings", w_Shader_getWarnings },
-	{ "sendFloat",   w_PixelEffect_sendFloat },
+	{ "sendFloat",   w_Shader_sendFloat },
-	{ "sendMatrix",  w_PixelEffect_sendMatrix },
+	{ "sendMatrix",  w_Shader_sendMatrix },
-	{ "sendImage",   w_PixelEffect_sendImage },
+	{ "sendImage",   w_Shader_sendImage },
-	{ "sendCanvas",  w_PixelEffect_sendCanvas },
+	{ "sendCanvas",  w_Shader_sendCanvas },
 	{ 0, 0 }
 };
 
-extern "C" int luaopen_pixeleffect(lua_State *L)
+extern "C" int luaopen_shader(lua_State *L)
 {
-	return luax_register_type(L, "PixelEffect", functions);
+	return luax_register_type(L, "Shader", functions);
 }
 
 } // opengl

src/modules/graphics/opengl/wrap_Shader.h

@@ -22,7 +22,7 @@
 #define LOVE_GRAPHICS_OPENGL_WRAP_PROGRAM_H
 
 #include "common/runtime.h"
-#include "PixelEffect.h"
+#include "Shader.h"
 
 namespace love
 {
@@ -31,12 +31,12 @@ namespace graphics
 namespace opengl
 {
 
-PixelEffect *luax_checkpixeleffect(lua_State *L, int idx);
+Shader *luax_checkshader(lua_State *L, int idx);
-int w_PixelEffect_getWarnings(lua_State *L);
+int w_Shader_getWarnings(lua_State *L);
-int w_PixelEffect_sendFloat(lua_State *L);
+int w_Shader_sendFloat(lua_State *L);
-int w_PixelEffect_sendMatrix(lua_State *L);
+int w_Shader_sendMatrix(lua_State *L);
-int w_PixelEffect_sendImage(lua_State *L);
+int w_Shader_sendImage(lua_State *L);
-extern "C" int luaopen_pixeleffect(lua_State *L);
+extern "C" int luaopen_shader(lua_State *L);
 
 } // opengl
 } // graphics

src/modules/window/sdl/Window.cpp

@@ -63,6 +63,8 @@ Window::_currentMode::_currentMode()
 bool Window::setWindow(int width, int height, bool fullscreen, bool vsync, int fsaa)
 {
 	bool mouseVisible = getMouseVisible();
+	int keyrepeatDelay, keyrepeatInterval;
+	SDL_GetKeyRepeat(&keyrepeatDelay, &keyrepeatInterval);
 
 	// We need to restart the subsystem for two reasons:
 	// 1) Special case for fullscreen -> windowed. Windows XP did not
@@ -87,6 +89,7 @@ bool Window::setWindow(int width, int height, bool fullscreen, bool vsync, int f
 	// Set caption.
 	setWindowTitle(windowTitle);
 	setMouseVisible(mouseVisible);
+	SDL_EnableKeyRepeat(keyrepeatDelay, keyrepeatInterval);
 
 	// Set GL attributes
 	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);

src/scripts/boot.lua

@@ -760,7 +760,7 @@ function love.releaseerrhand(msg)
 	end
 
 	love.graphics.setCanvas()
-	love.graphics.setPixelEffect()
+	love.graphics.setShader()
 
 	-- Load.
 	if love.audio then love.audio.stop() end

src/scripts/boot.lua.h

@@ -1783,7 +1783,7 @@ const unsigned char boot_lua[] =
 	0x09, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x67, 0x72, 0x61, 0x70, 0x68, 0x69, 0x63, 0x73, 0x2e, 0x73, 0x65, 0x74, 
 	0x43, 0x61, 0x6e, 0x76, 0x61, 0x73, 0x28, 0x29, 0x0a,
 	0x09, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x67, 0x72, 0x61, 0x70, 0x68, 0x69, 0x63, 0x73, 0x2e, 0x73, 0x65, 0x74, 
-	0x50, 0x69, 0x78, 0x65, 0x6c, 0x45, 0x66, 0x66, 0x65, 0x63, 0x74, 0x28, 0x29, 0x0a,
+	0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x28, 0x29, 0x0a,
 	0x09, 0x2d, 0x2d, 0x20, 0x4c, 0x6f, 0x61, 0x64, 0x2e, 0x0a,
 	0x09, 0x69, 0x66, 0x20, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x20, 0x74, 0x68, 0x65, 
 	0x6e, 0x20, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x61, 0x75, 0x64, 0x69, 0x6f, 0x2e, 0x73, 0x74, 0x6f, 0x70, 0x28, 

src/scripts/graphics.lua

@@ -1243,6 +1243,9 @@ do
 	FhERERESFxcLCwsbGxsWEggSDxQPFA8SCgkSDg4ODg4OCw4OAAAAAAACAAgAAv//AAMAAQAA
 	AAIAAAxQCuxfDzz1AB8IAAAAAAC6ufC4AAAAALrCZ5H+if4dCkwHbQAAAAgAAQAAAAAAAA==
 	]], "Vera.ttf", "base64")
+	
+	local table_concat = table.concat
+	local type = type
 
 	local _newFont = love.graphics.newFont
 	love.graphics.newFont = function(font, size)
@@ -1283,26 +1286,116 @@ do
 		love.graphics.printf(...)
 	end
 
-	-- PIXEL EFFECTS
+
-	local GLSL_HEADER_LINE_COUNT = 6
+	-- SHADERS
-	local GLSL_HEADER = [[#version 120
+
-	#define number float
+	local GLSL_VERSION = "#version 120"
-	#define Image sampler2D
+	
-	#define extern uniform
+	local GLSL_SYNTAX = [[
-	#define Texel texture2D
+#define number float
-	uniform sampler2D _tex0_;]]
+#define Image sampler2D
-	local GLSL_FOOTER = [[void main() {
+#define extern uniform
-		// fix weird crashing issue in OSX when _tex0_ is unused within effect()
+#define Texel texture2D]]
-		float dummy = texture2D(_tex0_, vec2(.5)).r;
+
-		gl_FragColor = effect(gl_Color, _tex0_, gl_TexCoord[0].xy, gl_FragCoord.xy);
+	local GLSL_UNIFORMS = [[
-	}]]
+#define ModelViewMatrix gl_ModelViewMatrix
-	function love.graphics._effectCodeToGLSL(code)
+#define ProjectionMatrix gl_ProjectionMatrix
-		return table.concat{GLSL_HEADER, "\n", code, GLSL_FOOTER}
+#define ModelViewProjectionMatrix gl_ModelViewProjectionMatrix
+#define NormalMatrix gl_NormalMatrix
+uniform sampler2D _tex0_;]]
+
+	local GLSL_VERT = {
+		HEADER = [[
+#define VERTEX
+
+#define VertexPosition gl_Vertex
+#define VertexTexCoord gl_MultiTexCoord0
+#define VertexColor gl_Color
+
+#define VaryingTexCoord gl_TexCoord[0]
+#define VaryingColor gl_FrontColor]],
+
+		FOOTER = [[
+void main() {
+	VaryingTexCoord = VertexTexCoord;
+	VaryingColor = VertexColor;
+	gl_Position = position(ModelViewProjectionMatrix, VertexPosition);
+}]],
+	}
+
+	local GLSL_FRAG = {
+		HEADER = [[
+#define PIXEL
+
+#define VaryingTexCoord gl_TexCoord[0]
+#define VaryingColor gl_Color]],
+
+		FOOTER = [[
+void main() {
+	// fix weird crashing issue in OSX when _tex0_ is unused within effect()
+	float dummy = texture2D(_tex0_, vec2(.5)).r;
+	gl_FragColor = effect(VaryingColor, _tex0_, VaryingTexCoord.st, gl_FragCoord.xy);
+}]],
+	}
+
+	local function createVertCode(vertcode)
+		local vertcodes = {
+			GLSL_VERSION,
+			GLSL_SYNTAX, GLSL_VERT.HEADER, GLSL_UNIFORMS,
+			"#line 0",
+			vertcode,
+			GLSL_VERT.FOOTER,
+		}
+		return table_concat(vertcodes, "\n")
+	end
+
+	local function createFragCode(fragcode)
+		local fragcodes = {
+			GLSL_VERSION,
+			GLSL_SYNTAX, GLSL_FRAG.HEADER, GLSL_UNIFORMS,
+			"#line 0",
+			fragcode,
+			GLSL_FRAG.FOOTER
+		}
+		return table_concat(fragcodes, "\n")
+	end
+
+	function love.graphics._shaderCodeToGLSL(vertcode, fragcode)
+		if vertcode then
+			local s = vertcode:gsub("\r\n\t", " ")
+			s = s:gsub("%w+(%s+)%(", "")
+			if s:match("vec4%s*effect%(") then
+				fragcode = vertcode -- first argument contains frag shader code
+			end
+			if not s:match("vec4%s*position%(") 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%s*position%(") then
+				vertcode = fragcode -- second argument contains vert shader code
+			end
+			if not s:match("vec4%s*effect%(") then
+				fragcode = nil -- second argument doesn't contain frag shader code
+			end
+		end
+
+		if vertcode then
+			vertcode = createVertCode(vertcode)
+		end
+		if fragcode then
+			fragcode = createFragCode(fragcode)
+		end
+
+		return vertcode, fragcode
 	end
 
 	function love.graphics._transformGLSLErrorMessages(message)
-		if not message:match("Cannot compile shader") then return message end
+		local shadertype = message:match("Cannot compile (%a+) shader code")
-		local lines = {"Cannot compile shader:"}
+		if not shadertype then return message end
+		local lines = {"Cannot compile "..shadertype.." shader code:"}
 		for l in message:gmatch("[^\n]+") do
 			-- nvidia compiler message:
 			-- 0(<linenumber>) : error/warning [NUMBER]: <error message>
@@ -1311,15 +1404,19 @@ do
 				-- ati compiler message:
 				-- ERROR 0:<linenumber>: error/warning(#[NUMBER]) [ERRORNAME]: <errormessage>
 				linenumber, what, message = l:match("^%w+: 0:(%d+):%s*(%w+)%([^%)]+%)%s*(.+)$")
+				if not linenumber then
+					-- OSX compiler message (?):
+					-- ERROR: 0:<linenumber>: <errormessage>
+					what, linenumber, message = l:match("^(%w+): %d+:(%d+): (.+)$")
+				end
 			end
 			if linenumber and what and message then
-				linenumber = linenumber - GLSL_HEADER_LINE_COUNT
 				lines[#lines+1] = ("Line %d: %s: %s"):format(linenumber, what, message)
 			end
 		end
 		-- did not match any known error messages
 		if #lines == 1 then return message end
-		return table.concat(lines, "\n")
+		return table_concat(lines, "\n")
 	end
 
 	-- helper to transform a matrix from {{a,b,c}, {d,e,f}, ...} to
@@ -1327,6 +1424,8 @@ do
 	local function flattenMatrices(mat, ...)
 		if not mat then return end
 
+		local tonumber = tonumber
+
 		local ret,l = {}, 1
 		ret.dimension = #mat
 
@@ -1340,41 +1439,59 @@ do
 	end
 
 	-- automagic uniform setter
-	local function pixeleffect_dispatch_send(self, name, value, ...)
+	local function shader_dispatch_send(self, name, value, ...)
-		if type(value) == "number" then         -- scalar
+		local valuetype = type(value)
+		if valuetype == "number" or valuetype == "boolean" then -- scalar
 			self:sendFloat(name, value, ...)
-		elseif type(value) == "userdata" and value:typeOf("Image") then
+		elseif valuetype == "userdata" and value:typeOf("Image") then
 			self:sendImage(name, value)
-		elseif type(value) == "userdata" and value:typeOf("Canvas") then
+		elseif valuetype == "userdata" and value:typeOf("Canvas") then
 			self:sendCanvas(name, value)
-		elseif type(value) == "table" then      -- vector or matrix
+		elseif valuetype == "table" then      -- vector or matrix
-			if type(value[1]) == "number" then
+			valuetype = type(value[1])
+			if valuetype == "number" or valuetype == "boolean" then
 				self:sendFloat(name, value, ...)
-			elseif type(value[1]) == "table" then
+			elseif valuetype == "table" then
 				self:sendMatrix(name, flattenMatrices(value, ...))
 			else
-				error("Cannot send value (unsupported type: {"..type(value[1]).."}).")
+				error("Cannot send value (unsupported type: {"..valuetype.."}).")
 			end
 		else
-			local t = type(value)
+			if valuetype == "userdata" and value.type then valuetype = value.type end
-			if t == "userdata" and value.type then t = value.type end
+			error("Cannot send value (unsupported type: "..valuetype..").")
-			error("Cannot send value (unsupported type: "..t..").")
 		end
 	end
 
-	local newPixelEffect = love.graphics.newPixelEffect
+	local newShader = love.graphics.newShader
-	function love.graphics.newPixelEffect(code)
+	function love.graphics.newShader(vertcode, fragcode)
-		love.graphics.newPixelEffect = function(code)
+		love.graphics.newShader = function(vertcode, fragcode)
-			if love.filesystem and love.filesystem.exists(code) then
+			if love.filesystem then
-				code = love.filesystem.read(code)
+				if vertcode and love.filesystem.exists(vertcode) then
+					vertcode = love.filesystem.read(vertcode)
+				end
+				if fragcode and love.filesystem.exists(fragcode) then
+					fragcode = love.filesystem.read(fragcode)
+				end
 			end
-			return newPixelEffect(code)
+			return newShader(vertcode, fragcode)
 		end
 
-		local effect = love.graphics.newPixelEffect(code)
+		local shader = love.graphics.newShader(vertcode, fragcode)
-		local meta = getmetatable(effect)
+		local meta = getmetatable(shader)
-		meta.send = pixeleffect_dispatch_send
+		meta.send = shader_dispatch_send
-		return effect
+		meta.sendBoolean = meta.sendFloat
+		return shader
 	end
 
+
+	-- PixelEffect compatibility functions
+
+	function love.graphics.newPixelEffect(fragcode)
+		return love.graphics.newShader(nil, fragcode)
+	end
+
+	love.graphics.setPixelEffect = love.graphics.setShader
+	love.graphics.getPixelEffect = love.graphics.getShader
+	
+	love.graphics._effectCodeToGLSL = love.graphics._shaderCodeToGLSL
 end

src/scripts/graphics.lua.h

@@ -6190,6 +6190,10 @@ const unsigned char graphics_lua[] =
 	0x3d, 0x0a,
 	0x09, 0x5d, 0x5d, 0x2c, 0x20, 0x22, 0x56, 0x65, 0x72, 0x61, 0x2e, 0x74, 0x74, 0x66, 0x22, 0x2c, 0x20, 0x22, 
 	0x62, 0x61, 0x73, 0x65, 0x36, 0x34, 0x22, 0x29, 0x0a,
+	0x09, 0x0a,
+	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x63, 0x61, 
+	0x74, 0x20, 0x3d, 0x20, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6e, 0x63, 0x61, 0x74, 0x0a,
+	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x74, 0x79, 0x70, 0x65, 0x20, 0x3d, 0x20, 0x74, 0x79, 0x70, 0x65, 0x0a,
 	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x5f, 0x6e, 0x65, 0x77, 0x46, 0x6f, 0x6e, 0x74, 0x20, 0x3d, 0x20, 
 	0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x67, 0x72, 0x61, 0x70, 0x68, 0x69, 0x63, 0x73, 0x2e, 0x6e, 0x65, 0x77, 0x46, 
 	0x6f, 0x6e, 0x74, 0x0a,
@@ -6259,56 +6263,205 @@ const unsigned char graphics_lua[] =
 	0x09, 0x09, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x67, 0x72, 0x61, 0x70, 0x68, 0x69, 0x63, 0x73, 0x2e, 0x70, 0x72, 
 	0x69, 0x6e, 0x74, 0x66, 0x28, 0x2e, 0x2e, 0x2e, 0x29, 0x0a,
 	0x09, 0x65, 0x6e, 0x64, 0x0a,
-	0x09, 0x2d, 0x2d, 0x20, 0x50, 0x49, 0x58, 0x45, 0x4c, 0x20, 0x45, 0x46, 0x46, 0x45, 0x43, 0x54, 0x53, 0x0a,
+	0x09, 0x2d, 0x2d, 0x20, 0x53, 0x48, 0x41, 0x44, 0x45, 0x52, 0x53, 0x0a,
-	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x47, 0x4c, 0x53, 0x4c, 0x5f, 0x48, 0x45, 0x41, 0x44, 0x45, 0x52, 
+	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x47, 0x4c, 0x53, 0x4c, 0x5f, 0x56, 0x45, 0x52, 0x53, 0x49, 0x4f, 
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+	0x4e, 0x20, 0x3d, 0x20, 0x22, 0x23, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x20, 0x31, 0x32, 0x30, 0x22, 0x0a,
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+	0x09, 0x0a,
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+	0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x20, 0x47, 0x4c, 0x53, 0x4c, 0x5f, 0x53, 0x59, 0x4e, 0x54, 0x41, 0x58, 
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@@ -6371,6 +6533,8 @@ const unsigned char graphics_lua[] =
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 }; // [graphics.lua]
 } // love