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TinyGL: Support for different color modes, part 2.

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This commit is contained in:
Giulio Camuffo 2012-01-24 18:20:33 +01:00
parent 158a19df31
commit b42bbe5259
18 changed files with 365 additions and 206 deletions
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57
graphics/pixelbuffer.cpp
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@ -30,7 +30,8 @@ PixelBuffer::PixelBuffer()
}
PixelBuffer::PixelBuffer(const PixelFormat &format, int buffersize, DisposeAfterUse::Flag dispose) {
PixelBuffer::PixelBuffer(const PixelFormat &format, int buffersize, DisposeAfterUse::Flag dispose)
: _buffer(NULL) {
create(format, buffersize, dispose);
}
@ -51,30 +52,56 @@ PixelBuffer::~PixelBuffer() {
}
void PixelBuffer::create(const Graphics::PixelFormat &format, int buffersize, DisposeAfterUse::Flag dispose) {
if (_dispose == DisposeAfterUse::YES)
free();
_format = format;
_dispose = dispose;
_buffer = new byte[buffersize * format.bytesPerPixel];
}
void PixelBuffer::create(int buffersize, DisposeAfterUse::Flag dispose) {
if (_dispose == DisposeAfterUse::YES)
free();
_dispose = dispose;
_buffer = new byte[buffersize * _format.bytesPerPixel];
}
void PixelBuffer::set(const Graphics::PixelFormat &format, byte *buffer) {
if (_dispose == DisposeAfterUse::YES)
free();
_format = format;
_buffer = buffer;
}
void PixelBuffer::free() {
delete[] _buffer;
_buffer = NULL;
}
void PixelBuffer::clear(int length) {
memset(_buffer, 0, length);
}
void PixelBuffer::setPixelAt(int pixel, uint32 value) {
#if defined(SCUMM_BIG_ENDIAN)
byte *buffer = _buffer + pixel * _format.bytesPerPixel;
for (int i = 0; i < _format.bytesPerPixel; ++i) {
buffer[i] = value >> ((_format.bytesPerPixel - i - 1) * 8) & 0xFF;
}
#elif defined(SCUMM_LITTLE_ENDIAN)
byte *buffer = _buffer + pixel * _format.bytesPerPixel;
for (int i = 0; i < _format.bytesPerPixel; ++i) {
buffer[i] = value >> (i * 8) & 0xFF;
}
}
void PixelBuffer::copyBuffer(int from, int length, const PixelBuffer &buf) {
copyBuffer(from, from, length, buf);
#endif
}
void PixelBuffer::copyBuffer(int thisFrom, int otherFrom, int length, const PixelBuffer &buf) {
if (buf._format == _format) {
memcpy(_buffer + thisFrom * _format.bytesPerPixel , buf._buffer + otherFrom * _format.bytesPerPixel, length * _format.bytesPerPixel);
memcpy(_buffer + thisFrom * _format.bytesPerPixel, buf._buffer + otherFrom * _format.bytesPerPixel, length * _format.bytesPerPixel);
} else {
uint8 r, g, b;
for (int i = 0; i < length; ++i) {
@ -85,21 +112,21 @@ void PixelBuffer::copyBuffer(int thisFrom, int otherFrom, int length, const Pixe
}
uint32 PixelBuffer::getValueAt(int i) const {
//TODO: Check this
#if defined(SCUMM_BIG_ENDIAN)
byte *buffer = _buffer + i * _format.bytesPerPixel;
uint32 p = buffer[0] << ((_format.bytesPerPixel - 1) * 8);
for (int l = 1; l < _format.bytesPerPixel; ++l) {
p = p | (buffer[l] << (8 * (_format.bytesPerPixel - l - 1)));
}
return p;
#elif defined(SCUMM_LITTLE_ENDIAN)
byte *buffer = _buffer + i * _format.bytesPerPixel;
uint32 p = buffer[0];
for (int l = 1; l < _format.bytesPerPixel; ++l) {
p = p | (buffer[l] << (8 * l));
}
return p;
}
byte *PixelBuffer::getRawBuffer() const {
return _buffer;
}
PixelFormat PixelBuffer::getFormat() const {
return _format;
#endif
}
PixelBuffer &PixelBuffer::operator=(const PixelBuffer &buf) {