cxx1y-sized-deallocation.rar_Table

/************************************************************************** * * Copyright 2010 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * **************************************************************************/ /** * @file * SRGB translation. * * @author Brian Paul <brianp@vmware.com> * @author Michal Krol <michal@vmware.com> * @author Jose Fonseca <jfonseca@vmware.com> */ #ifndef U_FORMAT_SRGB_H_ #define U_FORMAT_SRGB_H_ #include "pipe/p_compiler.h" #include "u_math.h" extern const float util_format_srgb_8unorm_to_linear_float_table[256]; extern const uint8_t util_format_srgb_to_linear_8unorm_table[256]; extern const uint8_t util_format_linear_to_srgb_8unorm_table[256]; /** * Convert a unclamped linear float to srgb value in the [0,255]. * XXX this hasn't been tested (render to srgb surface). * XXX this needs optimization. */ static INLINE uint8_t util_format_linear_float_to_srgb_8unorm(float x) { if (x >= 1.0f) return 255; else if (x >= 0.0031308f) return float_to_ubyte(1.055f * powf(x, 0.41666f) - 0.055f); else if (x > 0.0f) return float_to_ubyte(12.92f * x); else return 0; } /** * Convert an 8-bit sRGB value from non-linear space to a * linear RGB value in [0, 1]. * Implemented with a 256-entry lookup table. */ static INLINE float util_format_srgb_8unorm_to_linear_float(uint8_t x) { return util_format_srgb_8unorm_to_linear_float_table[x]; } /** * Convert a 8bit normalized value from linear to srgb. */ static INLINE uint8_t util_format_linear_to_srgb_8unorm(uint8_t x) { return util_format_linear_to_srgb_8unorm_table[x]; } /** * Convert a 8bit normalized value from srgb to linear. */ static INLINE uint8_t util_format_srgb_to_linear_8unorm(uint8_t x) { return util_format_srgb_to_linear_8unorm_table[x]; } #endif /* U_FORMAT_SRGB_H_ */