1 /* 2 * Copyright (c) 2010, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef Shader_h 32 #define Shader_h 33 34 #include <wtf/Noncopyable.h> 35 #include <wtf/PassOwnPtr.h> 36 #include <wtf/text/WTFString.h> 37 38 namespace WebCore { 39 40 class AffineTransform; 41 class GraphicsContext3D; 42 class Color; 43 44 class Shader { 45 WTF_MAKE_NONCOPYABLE(Shader); 46 public: 47 enum VertexType { 48 TwoDimensional, 49 LoopBlinnInterior, 50 LoopBlinnExterior 51 }; 52 53 enum FillType { 54 SolidFill, 55 TextureFill 56 }; 57 58 // Currently only applies to the Loop-Blinn vertex type. 59 enum AntialiasType { 60 NotAntialiased, 61 Antialiased 62 }; 63 64 protected: 65 Shader(GraphicsContext3D*, unsigned program); 66 ~Shader(); 67 68 static String generateVertex(VertexType, FillType); 69 static String generateFragment(VertexType, FillType, AntialiasType); 70 71 static void affineTo3x3(const AffineTransform&, float mat[9]); 72 static void affineTo4x4(const AffineTransform&, float mat[16]); 73 static unsigned loadShader(GraphicsContext3D*, unsigned type, const String& shaderSource); 74 static unsigned loadProgram(GraphicsContext3D*, const String& vertexShaderSource, const String& fragmentShaderSource); 75 76 GraphicsContext3D* m_context; 77 unsigned m_program; 78 }; 79 80 } 81 82 #endif // Shader_h 83