PBRT
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00001 00002 // 00003 // Copyright (c) 2004, Industrial Light & Magic, a division of Lucas 00004 // Digital Ltd. LLC 00005 // 00006 // All rights reserved. 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are 00010 // met: 00011 // * Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // * Redistributions in binary form must reproduce the above 00014 // copyright notice, this list of conditions and the following disclaimer 00015 // in the documentation and/or other materials provided with the 00016 // distribution. 00017 // * Neither the name of Industrial Light & Magic nor the names of 00018 // its contributors may be used to endorse or promote products derived 00019 // from this software without specific prior written permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00034 00035 00036 #ifndef INCLUDED_IMF_RGBA_H 00037 #define INCLUDED_IMF_RGBA_H 00038 00039 //----------------------------------------------------------------------------- 00040 // 00041 // class Rgba 00042 // 00043 //----------------------------------------------------------------------------- 00044 00045 #include "half.h" 00046 00047 namespace Imf { 00048 00049 00050 // 00051 // RGBA pixel 00052 // 00053 00054 struct Rgba 00055 { 00056 half r; 00057 half g; 00058 half b; 00059 half a; 00060 00061 Rgba () {} 00062 Rgba (half r, half g, half b, half a = 1.f): r (r), g (g), b (b), a (a) {} 00063 00064 Rgba & operator = (const Rgba &other) 00065 { 00066 r = other.r; 00067 g = other.g; 00068 b = other.b; 00069 a = other.a; 00070 00071 return *this; 00072 } 00073 }; 00074 00075 00076 // 00077 // Channels in an RGBA file 00078 // 00079 00080 enum RgbaChannels 00081 { 00082 WRITE_R = 0x01, // Red 00083 WRITE_G = 0x02, // Green 00084 WRITE_B = 0x04, // Blue 00085 WRITE_A = 0x08, // Alpha 00086 00087 WRITE_Y = 0x10, // Luminance, for black-and-white images, 00088 // or in combination with chroma 00089 00090 WRITE_C = 0x20, // Chroma (two subsampled channels, RY and BY, 00091 // supported only for scanline-based files) 00092 00093 WRITE_RGB = 0x07, // Red, green, blue 00094 WRITE_RGBA = 0x0f, // Red, green, blue, alpha 00095 00096 WRITE_YC = 0x30, // Luminance, chroma 00097 WRITE_YA = 0x18, // Luminance, alpha 00098 WRITE_YCA = 0x38 // Luminance, chroma, alpha 00099 }; 00100 00101 00102 } // namespace Imf 00103 00104 #endif