You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
1.4 KiB
C++
103 lines
1.4 KiB
C++
// This code is in the public domain -- castano@gmail.com
|
|
|
|
#include "TiledImage.h"
|
|
|
|
#include <nvcore/StdStream.h>
|
|
|
|
|
|
using namespace nv;
|
|
|
|
namespace
|
|
{
|
|
// MRU helpers:
|
|
// ...
|
|
|
|
|
|
}
|
|
|
|
|
|
bool Tile::load(const char * name)
|
|
{
|
|
StdInputStream stream(name);
|
|
|
|
if (stream.isError()) {
|
|
return false;
|
|
}
|
|
|
|
uint header;
|
|
stream << header;
|
|
|
|
if (header == 'NVTC') {
|
|
return false;
|
|
}
|
|
|
|
uint count;
|
|
stream << count;
|
|
|
|
if (count != w*h) {
|
|
return false;
|
|
}
|
|
|
|
const uint size = count * sizeof(float);
|
|
|
|
return stream.serialize(data, size) == size;
|
|
}
|
|
|
|
|
|
bool Tile::unload(const char * name)
|
|
{
|
|
StdOutputStream stream(name);
|
|
|
|
if (stream.isError()) {
|
|
return false;
|
|
}
|
|
|
|
uint header = 'NVTC';
|
|
uint count = w * h;
|
|
const uint size = w * h * sizeof(float);
|
|
|
|
stream << header << count;
|
|
|
|
return stream.serialize(data, size) == size;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
TiledImage::TiledImage()
|
|
{
|
|
}
|
|
|
|
void TiledImage::allocate(uint c, uint w, uint h, uint pageCount)
|
|
{
|
|
// Allocate page map:
|
|
const uint pw = ((w + TILE_SIZE - 1) / TILE_SIZE);
|
|
const uint ph = ((h + TILE_SIZE - 1) / TILE_SIZE);
|
|
const uint size = c * pw * ph;
|
|
m_pageMap.resize(size);
|
|
|
|
m_residentArray.resize(pageCount, ~0);
|
|
}
|
|
|
|
void TiledImage::prefetch(uint c, uint x, uint y)
|
|
{
|
|
}
|
|
|
|
void TiledImage::prefetch(uint c, uint x, uint y, uint w, uint h)
|
|
{
|
|
}
|
|
|
|
void TiledImage::loadPage(uint x, uint y)
|
|
{
|
|
const uint pw = ((w + TILE_SIZE - 1) / TILE_SIZE);
|
|
const uint ph = ((h + TILE_SIZE - 1) / TILE_SIZE);
|
|
|
|
nvDebugCheck(x < pw);
|
|
nvDebugCheck(y < ph);
|
|
|
|
|
|
}
|
|
|
|
|