Merge pull request #38 from zsbzsb/master

Updated CSFML to match the blending mode changes

include/SFML/Graphics/BlendMode.h

@@ -32,16 +32,54 @@
 
 
 ////////////////////////////////////////////////////////////
-/// \brief Available blending modes for drawing
+/// \brief Enumeration of the blending factors
 ///
 ////////////////////////////////////////////////////////////
 typedef enum 
 {
-    sfBlendAlpha,    ///< Pixel = Src * a + Dest * (1 - a)
-    sfBlendAdd,      ///< Pixel = Src + Dest
-    sfBlendMultiply, ///< Pixel = Src * Dest
-    sfBlendNone      ///< No blending
+    sfBlendFactorZero,             ///< (0, 0, 0, 0)
+    sfBlendFactorOne,              ///< (1, 1, 1, 1)
+    sfBlendFactorSrcColor,         ///< (src.r, src.g, src.b, src.a)
+    sfBlendFactorOneMinusSrcColor, ///< (1, 1, 1, 1) - (src.r, src.g, src.b, src.a)
+    sfBlendFactorDstColor,         ///< (dst.r, dst.g, dst.b, dst.a)
+    sfBlendFactorOneMinusDstColor, ///< (1, 1, 1, 1) - (dst.r, dst.g, dst.b, dst.a)
+    sfBlendFactorSrcAlpha,         ///< (src.a, src.a, src.a, src.a)
+    sfBlendFactorOneMinusSrcAlpha, ///< (1, 1, 1, 1) - (src.a, src.a, src.a, src.a)
+    sfBlendFactorDstAlpha,         ///< (dst.a, dst.a, dst.a, dst.a)
+    sfBlendFactorOneMinusDstAlpha  ///< (1, 1, 1, 1) - (dst.a, dst.a, dst.a, dst.a)
+} sfBlendFactor;
+
+
+////////////////////////////////////////////////////////////
+/// \brief Enumeration of the blending equations
+///
+////////////////////////////////////////////////////////////
+typedef enum
+{
+    sfBlendEquationAdd,     ///< Pixel = Src * SrcFactor + Dst * DstFactor
+    sfBlendEquationSubtract ///< Pixel = Src * SrcFactor - Dst * DstFactor
+} sfBlendEquation;
+
+
+////////////////////////////////////////////////////////////
+/// \brief Blending mode for drawing
+///
+////////////////////////////////////////////////////////////
+typedef struct
+{
+    sfBlendFactor colorSrcFactor;  ///< Source blending factor for the color channels
+    sfBlendFactor colorDstFactor;  ///< Destination blending factor for the color channels
+    sfBlendEquation colorEquation; ///< Blending equation for the color channels
+    sfBlendFactor alphaSrcFactor;  ///< Source blending factor for the alpha channel
+    sfBlendFactor alphaDstFactor;  ///< Destination blending factor for the alpha channel
+    sfBlendEquation alphaEquation; ///< Blending equation for the alpha channel
 } sfBlendMode;
 
 
+CSFML_GRAPHICS_API const sfBlendMode sfBlendAlpha;    ///< Blend source and dest according to dest alpha
+CSFML_GRAPHICS_API const sfBlendMode sfBlendAdd;      ///< Add source to dest
+CSFML_GRAPHICS_API const sfBlendMode sfBlendMultiply; ///< Multiply source and dest
+CSFML_GRAPHICS_API const sfBlendMode sfBlendNone;     ///< Overwrite dest with source
+
+
 #endif // SFML_BLENDMODE_H

src/SFML/Graphics/BlendMode.cpp

@@ -0,0 +1,45 @@
+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007-2013 Laurent Gomila (laurent.gom@gmail.com)
+//
+// 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.
+//
+////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/Graphics/BlendMode.h>
+
+
+////////////////////////////////////////////////////////////
+const sfBlendMode sfBlendAlpha = { sfBlendFactorSrcAlpha, sfBlendFactorOneMinusSrcAlpha, sfBlendEquationAdd,
+                                 sfBlendFactorOne, sfBlendFactorOneMinusSrcAlpha, sfBlendEquationAdd };
+
+////////////////////////////////////////////////////////////
+const sfBlendMode sfBlendAdd = { sfBlendFactorSrcAlpha, sfBlendFactorOne, sfBlendEquationAdd,
+                                 sfBlendFactorOne, sfBlendFactorOne, sfBlendEquationAdd };
+
+////////////////////////////////////////////////////////////
+const sfBlendMode sfBlendMultiply = { sfBlendFactorDstColor, sfBlendFactorZero, sfBlendEquationAdd,
+                                      sfBlendFactorDstColor, sfBlendFactorZero, sfBlendEquationAdd };
+
+////////////////////////////////////////////////////////////
+const sfBlendMode sfBlendNone = { sfBlendFactorOne, sfBlendFactorZero, sfBlendEquationAdd,
+                                      sfBlendFactorOne, sfBlendFactorZero, sfBlendEquationAdd };

src/SFML/Graphics/CMakeLists.txt

@@ -5,6 +5,7 @@ set(SRCROOT ${CMAKE_SOURCE_DIR}/src/SFML/Graphics)
 # all source files
 set(SRC
     ${INCROOT}/Export.h
+    ${SRCROOT}/BlendMode.cpp
     ${INCROOT}/BlendMode.h
     ${SRCROOT}/CircleShape.cpp
     ${SRCROOT}/CircleShapeStruct.h

src/SFML/Graphics/ConvertRenderStates.hpp

@@ -44,7 +44,12 @@ inline sf::RenderStates convertRenderStates(const sfRenderStates* states)
 
     if (states)
     {
-        sfmlStates.blendMode = static_cast<sf::BlendMode>(states->blendMode);
+        sfmlStates.blendMode.colorSrcFactor = static_cast<sf::BlendMode::Factor>(states->blendMode.colorSrcFactor);
+        sfmlStates.blendMode.colorDstFactor = static_cast<sf::BlendMode::Factor>(states->blendMode.colorDstFactor);
+        sfmlStates.blendMode.colorEquation = static_cast<sf::BlendMode::Equation>(states->blendMode.colorEquation);
+        sfmlStates.blendMode.alphaSrcFactor = static_cast<sf::BlendMode::Factor>(states->blendMode.alphaSrcFactor);
+        sfmlStates.blendMode.alphaDstFactor = static_cast<sf::BlendMode::Factor>(states->blendMode.alphaDstFactor);
+        sfmlStates.blendMode.alphaEquation = static_cast<sf::BlendMode::Equation>(states->blendMode.alphaEquation);
         sfmlStates.transform = convertTransform(states->transform);
         sfmlStates.texture = states->texture ? states->texture->This : NULL;
         sfmlStates.shader = states->shader ? &states->shader->This : NULL;