1/* 2 * Copyright (C) 2009 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef WebGLTexture_h 27#define WebGLTexture_h 28 29#include "WebGLSharedObject.h" 30 31#include <wtf/PassRefPtr.h> 32#include <wtf/Vector.h> 33 34namespace WebCore { 35 36class WebGLTexture : public WebGLSharedObject { 37public: 38 39 enum TextureExtensionFlag { 40 TextureExtensionsDisabled = 0, 41 TextureExtensionFloatLinearEnabled = 1 << 0, 42 TextureExtensionHalfFloatLinearEnabled = 2 << 0 43 }; 44 45 virtual ~WebGLTexture(); 46 47 static PassRefPtr<WebGLTexture> create(WebGLRenderingContext*); 48 49 void setTarget(GC3Denum target, GC3Dint maxLevel); 50 void setParameteri(GC3Denum pname, GC3Dint param); 51 void setParameterf(GC3Denum pname, GC3Dfloat param); 52 53 GC3Denum getTarget() const { return m_target; } 54 55 int getMinFilter() const { return m_minFilter; } 56 57 void setLevelInfo(GC3Denum target, GC3Dint level, GC3Denum internalFormat, GC3Dsizei width, GC3Dsizei height, GC3Denum type); 58 59 bool canGenerateMipmaps(); 60 // Generate all level information. 61 void generateMipmapLevelInfo(); 62 63 GC3Denum getInternalFormat(GC3Denum target, GC3Dint level) const; 64 GC3Denum getType(GC3Denum target, GC3Dint level) const; 65 GC3Dsizei getWidth(GC3Denum target, GC3Dint level) const; 66 GC3Dsizei getHeight(GC3Denum target, GC3Dint level) const; 67 bool isValid(GC3Denum target, GC3Dint level) const; 68 void markInvalid(GC3Denum target, GC3Dint level); 69 70 // Whether width/height is NotPowerOfTwo. 71 static bool isNPOT(GC3Dsizei, GC3Dsizei); 72 73 bool isNPOT() const; 74 // Determine if texture sampling should always return [0, 0, 0, 1] (OpenGL ES 2.0 Sec 3.8.2). 75 bool needToUseBlackTexture(TextureExtensionFlag) const; 76 77 bool isCompressed() const; 78 void setCompressed(); 79 80 bool hasEverBeenBound() const { return object() && m_target; } 81 82 static GC3Dint computeLevelCount(GC3Dsizei width, GC3Dsizei height); 83 84protected: 85 WebGLTexture(WebGLRenderingContext*); 86 87 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject) override; 88 89private: 90 class LevelInfo { 91 public: 92 LevelInfo() 93 : valid(false) 94 , internalFormat(0) 95 , width(0) 96 , height(0) 97 , type(0) 98 { 99 } 100 101 void setInfo(GC3Denum internalFmt, GC3Dsizei w, GC3Dsizei h, GC3Denum tp) 102 { 103 valid = true; 104 internalFormat = internalFmt; 105 width = w; 106 height = h; 107 type = tp; 108 } 109 110 bool valid; 111 GC3Denum internalFormat; 112 GC3Dsizei width; 113 GC3Dsizei height; 114 GC3Denum type; 115 }; 116 117 virtual bool isTexture() const override { return true; } 118 119 void update(); 120 121 int mapTargetToIndex(GC3Denum) const; 122 123 const LevelInfo* getLevelInfo(GC3Denum target, GC3Dint level) const; 124 125 GC3Denum m_target; 126 127 GC3Denum m_minFilter; 128 GC3Denum m_magFilter; 129 GC3Denum m_wrapS; 130 GC3Denum m_wrapT; 131 132 Vector<Vector<LevelInfo>> m_info; 133 134 bool m_isNPOT; 135 bool m_isComplete; 136 bool m_needToUseBlackTexture; 137 bool m_isCompressed; 138 bool m_isFloatType; 139 bool m_isHalfFloatType; 140}; 141 142} // namespace WebCore 143 144#endif // WebGLTexture_h 145