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| 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 COMPUTER, 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 COMPUTER, 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 SKY_ENGINE_CORE_HTML_CANVAS_WEBGLTEXTURE_H_ | |
| 27 #define SKY_ENGINE_CORE_HTML_CANVAS_WEBGLTEXTURE_H_ | |
| 28 | |
| 29 #include "sky/engine/tonic/dart_wrappable.h" | |
| 30 #include "sky/engine/core/html/canvas/WebGLSharedObject.h" | |
| 31 #include "sky/engine/wtf/PassRefPtr.h" | |
| 32 #include "sky/engine/wtf/Vector.h" | |
| 33 | |
| 34 namespace blink { | |
| 35 | |
| 36 class WebGLTexture final : public WebGLSharedObject, public DartWrappable { | |
| 37 DEFINE_WRAPPERTYPEINFO(); | |
| 38 public: | |
| 39 enum TextureExtensionFlag { | |
| 40 NoTextureExtensionEnabled = 0, | |
| 41 TextureFloatLinearExtensionEnabled = 1 << 0, | |
| 42 TextureHalfFloatLinearExtensionEnabled = 1 << 1 | |
| 43 }; | |
| 44 virtual ~WebGLTexture(); | |
| 45 | |
| 46 static PassRefPtr<WebGLTexture> create(WebGLRenderingContextBase*); | |
| 47 | |
| 48 void setTarget(GLenum target, GLint maxLevel); | |
| 49 void setParameteri(GLenum pname, GLint param); | |
| 50 void setParameterf(GLenum pname, GLfloat param); | |
| 51 | |
| 52 GLenum getTarget() const { return m_target; } | |
| 53 | |
| 54 int getMinFilter() const { return m_minFilter; } | |
| 55 | |
| 56 void setLevelInfo(GLenum target, GLint level, GLenum internalFormat, GLsizei
width, GLsizei height, GLenum type); | |
| 57 | |
| 58 bool canGenerateMipmaps(); | |
| 59 // Generate all level information. | |
| 60 void generateMipmapLevelInfo(); | |
| 61 | |
| 62 GLenum getInternalFormat(GLenum target, GLint level) const; | |
| 63 GLenum getType(GLenum target, GLint level) const; | |
| 64 GLsizei getWidth(GLenum target, GLint level) const; | |
| 65 GLsizei getHeight(GLenum target, GLint level) const; | |
| 66 bool isValid(GLenum target, GLint level) const; | |
| 67 | |
| 68 // Whether width/height is NotPowerOfTwo. | |
| 69 static bool isNPOT(GLsizei, GLsizei); | |
| 70 | |
| 71 bool isNPOT() const; | |
| 72 // Determine if texture sampling should always return [0, 0, 0, 1] (OpenGL E
S 2.0 Sec 3.8.2). | |
| 73 bool needToUseBlackTexture(TextureExtensionFlag) const; | |
| 74 | |
| 75 bool hasEverBeenBound() const { return object() && m_target; } | |
| 76 | |
| 77 static GLint computeLevelCount(GLsizei width, GLsizei height); | |
| 78 | |
| 79 protected: | |
| 80 explicit WebGLTexture(WebGLRenderingContextBase*); | |
| 81 | |
| 82 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject
) override; | |
| 83 | |
| 84 private: | |
| 85 class LevelInfo { | |
| 86 public: | |
| 87 LevelInfo() | |
| 88 : valid(false) | |
| 89 , internalFormat(0) | |
| 90 , width(0) | |
| 91 , height(0) | |
| 92 , type(0) | |
| 93 { | |
| 94 } | |
| 95 | |
| 96 void setInfo(GLenum internalFmt, GLsizei w, GLsizei h, GLenum tp) | |
| 97 { | |
| 98 valid = true; | |
| 99 internalFormat = internalFmt; | |
| 100 width = w; | |
| 101 height = h; | |
| 102 type = tp; | |
| 103 } | |
| 104 | |
| 105 bool valid; | |
| 106 GLenum internalFormat; | |
| 107 GLsizei width; | |
| 108 GLsizei height; | |
| 109 GLenum type; | |
| 110 }; | |
| 111 | |
| 112 virtual bool isTexture() const override { return true; } | |
| 113 | |
| 114 void update(); | |
| 115 | |
| 116 int mapTargetToIndex(GLenum) const; | |
| 117 | |
| 118 const LevelInfo* getLevelInfo(GLenum target, GLint level) const; | |
| 119 | |
| 120 GLenum m_target; | |
| 121 | |
| 122 GLenum m_minFilter; | |
| 123 GLenum m_magFilter; | |
| 124 GLenum m_wrapS; | |
| 125 GLenum m_wrapT; | |
| 126 | |
| 127 Vector<Vector<LevelInfo> > m_info; | |
| 128 | |
| 129 bool m_isNPOT; | |
| 130 bool m_isCubeComplete; | |
| 131 bool m_isComplete; | |
| 132 bool m_needToUseBlackTexture; | |
| 133 bool m_isFloatType; | |
| 134 bool m_isHalfFloatType; | |
| 135 }; | |
| 136 | |
| 137 } // namespace blink | |
| 138 | |
| 139 #endif // SKY_ENGINE_CORE_HTML_CANVAS_WEBGLTEXTURE_H_ | |
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