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127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "graphics/tinygl/pixelbuffer.h"
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namespace Graphics {
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PixelBuffer::PixelBuffer()
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: _buffer(NULL),
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_dispose(DisposeAfterUse::NO) {
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}
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PixelBuffer::PixelBuffer(const PixelFormat &format, int buffersize, DisposeAfterUse::Flag dispose)
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: _buffer(NULL),
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_dispose(DisposeAfterUse::NO) {
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create(format, buffersize, dispose);
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}
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PixelBuffer::PixelBuffer(const PixelFormat &format, byte *buffer)
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: _buffer(buffer),
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_format(format),
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_dispose(DisposeAfterUse::NO) {
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}
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PixelBuffer::PixelBuffer(const PixelBuffer &buf) {
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*this = buf;
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}
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PixelBuffer::~PixelBuffer() {
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if (_dispose == DisposeAfterUse::YES)
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free();
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}
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void PixelBuffer::create(const Graphics::PixelFormat &format, int buffersize, DisposeAfterUse::Flag dispose) {
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if (_dispose == DisposeAfterUse::YES)
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free();
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_format = format;
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_dispose = dispose;
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_buffer = new byte[buffersize * format.bytesPerPixel];
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}
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void PixelBuffer::create(int buffersize, DisposeAfterUse::Flag dispose) {
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if (_dispose == DisposeAfterUse::YES)
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free();
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_dispose = dispose;
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_buffer = new byte[buffersize * _format.bytesPerPixel];
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}
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void PixelBuffer::set(const Graphics::PixelFormat &format, byte *buffer) {
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if (_dispose == DisposeAfterUse::YES)
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free();
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_format = format;
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_buffer = buffer;
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}
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void PixelBuffer::free() {
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delete[] _buffer;
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_buffer = NULL;
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}
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void PixelBuffer::clear(int length) {
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memset(_buffer, 0, length * _format.bytesPerPixel);
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}
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void PixelBuffer::copyBuffer(int thisFrom, int otherFrom, int length, const PixelBuffer &buf) {
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if (buf._format.bytesPerPixel == _format.bytesPerPixel &&
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buf._format.rShift == _format.rShift &&
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buf._format.gShift == _format.gShift &&
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buf._format.bShift == _format.bShift &&
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buf._format.rLoss == _format.rLoss &&
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buf._format.gLoss == _format.gLoss &&
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buf._format.bLoss == _format.bLoss && (
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_format.aLoss == 8 ||
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buf._format.aLoss == _format.aLoss
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)
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) {
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memcpy(_buffer + thisFrom * _format.bytesPerPixel, buf._buffer + otherFrom * _format.bytesPerPixel, length * _format.bytesPerPixel);
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} else {
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uint8 r, g, b, a;
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for (int i = 0; i < length; ++i) {
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buf.getARGBAt(i + otherFrom, a, r, g, b);
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setPixelAt(i + thisFrom, a, r, g, b);
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}
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}
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}
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PixelBuffer &PixelBuffer::operator=(const PixelBuffer &buf) {
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_buffer = buf._buffer;
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_format = buf._format;
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_dispose = DisposeAfterUse::NO;
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return *this;
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}
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PixelBuffer &PixelBuffer::operator=(byte *buffer) {
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_buffer = buffer;
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_dispose = DisposeAfterUse::NO;
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return *this;
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}
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}
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