initial commit of DSFML2

some basic things work, much still has to be done
- made as few changes as possible to make it compile under D2
- removed system.thread, use standard threads
- lots of other changes

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1333 4e206d99-4929-0410-ac5d-dfc041789085

DSFML/import/dsfml/graphics/shader.d

@@ -0,0 +1,139 @@
+/*
+*   DSFML - SFML Library wrapper for the D programming language.
+*   Copyright (C) 2008 Julien Dagorn (sirjulio13@gmail.com)
+*   Copyright (C) 2010 Andreas Hollandt
+*
+*   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.
+*/
+
+module dsfml.graphics.shader;
+
+import dsfml.graphics.common;
+import dsfml.graphics.image;
+
+import dsfml.system.common;
+import dsfml.system.exception;
+import dsfml.system.stringutil;
+
+
+/**
+*   Define loading methods for effect
+*/
+enum LoadingType
+{
+    FROMFILE,   /// string represents a file path
+    FROMSTRING  /// string represents effect code
+}
+
+/**
+*   Shader is used to apply a post effect to a window
+* 
+*   See_Also:
+*   $(LINK2 http://www.sfml-dev.org/tutorials/graphics-postfx.php, SFML post FX tutorial) from more informations about Post effects and GLSL fragment shaders syntax.
+*/
+class Shader : DSFMLObject
+{
+    /**
+    *   construct the effect
+    *
+    *   Params: 
+    *       effect = Path of a file or string containing the effect.
+    *       type = type of the effect (default is FROMFILE)    
+    */
+    this(string effect, LoadingType type = LoadingType.FROMFILE)
+	{
+        if (effect is null || effect.length == 0)
+	       throw new LoadingException("LoadingException : Effect is invalid.");
+        
+        if (type == LoadingType.FROMFILE)
+            super(sfShader_CreateFromFile(toStringz(effect)));
+        else
+            super(sfShader_CreateFromMemory(toStringz(effect)));
+	}
+
+    override void dispose()
+	{
+		sfShader_Destroy(m_ptr);
+	}
+
+    /**
+    *   Change parameters of the effect           
+    *
+    *   Params:    
+    *       name = Parameter name in the effect
+    */
+    void setParameter(string name, float x)
+	{
+		sfShader_SetParameter1(m_ptr, toStringz(name), x);
+	}
+
+    /**
+    *   ditto
+    */           
+    void setParameter(string name, float x, float y)
+	{
+		sfShader_SetParameter2(m_ptr, toStringz(name), x, y);
+	}
+
+    /**
+    *   ditto
+    */           
+    void setParameter(string name, float x, float y, float z)
+	{
+		sfShader_SetParameter3(m_ptr, toStringz(name), x, y, z);
+	}
+
+    /**
+    *   ditto
+    */           
+    void setParameter(string name, float x, float y, float z, float w)
+	{
+		sfShader_SetParameter4(m_ptr, toStringz(name), x, y, z, w);
+	}
+
+    /**
+    *   Set a texture parameter
+    *
+    *   Params: 
+    *       name = Texture name in the effect
+    *       texture = Image to set (pass NULL to use content of current framebuffer)
+    */
+    void setTexture(string name, Image texture)
+	{
+        m_texture = texture;
+		sfShader_SetTexture(m_ptr, toStringz(name), texture is null ? null : texture.getNativePointer);
+	}
+
+    /**
+    *   Tell whether or not the system supports shaders
+    *
+    *   Returns:
+    *       True if the system can use shaders
+    */
+    static bool isAvailable()
+	{
+		return cast(bool)sfShader_IsAvailable();
+	}
+
+
+private:
+	Image m_texture;
+}