6663b6c9
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projet complet av...
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#include <kandinsky/framebuffer.h>
#include <string.h>
KDFrameBuffer::KDFrameBuffer(KDColor * pixels, KDSize size) :
m_pixels(pixels),
m_size(size)
{
}
KDRect KDFrameBuffer::bounds() {
return KDRect(KDPointZero, m_size);
}
KDColor * KDFrameBuffer::pixelAddress(KDPoint p) const {
return m_pixels + p.x() + p.y()*m_size.width();
}
void KDFrameBuffer::pushRect(KDRect rect, const KDColor * pixels) {
const KDColor * line = pixels;
for (KDCoordinate j=0; j<rect.height(); j++) {
KDPoint lineOffset = KDPoint(0, j);
memcpy(pixelAddress(rect.origin().translatedBy(lineOffset)),
line,
rect.width()*sizeof(KDColor));
line += rect.width();
}
}
void KDFrameBuffer::pushRectUniform(KDRect rect, KDColor color) {
// Caution: this code is used very frequently
// It's worth optimizing!
KDColor * pixel = pixelAddress(rect.origin());
int lineDelta = m_size.width() - rect.width();
for (KDCoordinate j=0; j<rect.height(); j++) {
//KDColor * topLeftPixelAddress = pixelAddress(rect.origin().translatedBy(KDPoint(0,j)));
//*pixelAddress(rect.origin().translatedBy(KDPoint(i,j))) = color;
for (KDCoordinate i=0; i<rect.width(); i++) {
*pixel++ = color;
//*pixelAddress(rect.origin().translatedBy(KDPoint(i,j))) = color;
}
pixel += lineDelta;
}
}
void KDFrameBuffer::pullRect(KDRect rect, KDColor * pixels) {
KDColor * line = pixels;
for (KDCoordinate j=0; j<rect.height(); j++) {
KDPoint lineOffset = KDPoint(0, j);
memcpy(line,
pixelAddress(rect.origin().translatedBy(lineOffset)),
rect.width()*sizeof(KDColor));
line += rect.width();
}
}
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