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Location: cpp/openttd-patchpack/source/src/cmd_helper.h - annotation
r24860:fb2788d47d86
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Codechange: [OSX] Only keep a total dirty rect for drawing.
When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.
All other drivers only keep one overall dirty rect, so do it here as well.
When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.
All other drivers only keep one overall dirty rect, so do it here as well.
r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r9111:983de9c5a848 r9111:983de9c5a848 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r14983:545266d14bef r18883:e846a8f166c0 r6134:aa2aee9f9144 r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r17624:f2c5f47dceaa r14994:b24d36ab6c4f r6134:aa2aee9f9144 r11363:6906c490a00e r24521:57ec498b9221 r24521:57ec498b9221 r24521:57ec498b9221 r15027:bb71fdfcc554 r15027:bb71fdfcc554 r6134:aa2aee9f9144 r6134:aa2aee9f9144 r16849:d593358b4346 | /*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file cmd_helper.h Helper functions to extract data from command parameters. */
#ifndef CMD_HELPER_H
#define CMD_HELPER_H
#include "core/enum_type.hpp"
#include "core/bitmath_func.hpp"
/**
* Extracts a given type from a value.
* @tparam T The type of data we're looking for.
* @tparam S The offset in the data.
* @tparam N The amount of bits to read.
* @tparam U The type of data passed to us.
* @param v The data to extract the value from.
*/
template<typename T, uint S, uint N, typename U> static inline T Extract(U v)
{
/* Check if there are enough bits in v */
static_assert(N == EnumPropsT<T>::num_bits);
static_assert(S + N <= sizeof(U) * 8);
static_assert(EnumPropsT<T>::end <= (1 << N));
U masked = GB(v, S, N);
return IsInsideMM(masked, EnumPropsT<T>::begin, EnumPropsT<T>::end) ? (T)masked : EnumPropsT<T>::invalid;
}
#endif /* CMD_HELPER_H */
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