void terrain_BlendmapInPlaceEdited(MapTextureStage maptexturestage, int xleft, int ytop, int xright, int ybottom)
{
for (int chunkx = xleft / chunksize; chunkx <= xright / chunksize && chunkx < width / chunksize;
chunkx++)
{
for (int chunky = ytop / chunksize; chunky <= ybottom / chunksize && chunky < height / chunksize;
chunky++)
{
// Console.WriteLine("chunk " + chunkx + " " + chunky);
//for (int texturestageindex = 0; texturestageindex < maptexturestages.GetLength(0); texturestageindex++)
//{
// maptexturestage = maptexturestages[texturestageindex];
if (maptexturestage.Operation == MapTextureStage.OperationType.Blend)
{
bool texturestageused = false;
// go through each point in chunk and check if texturestage is used
for (int mapx = chunkx * chunksize; mapx < (chunkx + 1) * chunksize && !texturestageused;
mapx++)
{
for (int mapy = chunky * chunksize; mapy < (chunky + 1) * chunksize && !texturestageused;
mapy++)
{
//if (mapx < width && mapy < height)
//{
if (maptexturestage.Affects(mapx, mapy, width, height))
{
texturestageused = true;
}
//}
}
}
chunkusestexturestage[maptexturestage][chunkx, chunky] = texturestageused;
// if (chunkusestexturestage[texturestageindex][chunkx, chunky])
//{
// Console.WriteLine("texturestage used: " + texturestageindex + " " + chunkx + " " + chunky);
//}
}
else
{
chunkusestexturestage[maptexturestage][chunkx, chunky] = true;
}
//}
}
}
}
// determine which chunks are used by each texture stage
// only affects blend really
void CacheChunkTextureStageUsage()
{
int numxchunks = width / chunksize;
int numychunks = height / chunksize;
chunkusestexturestage = new Dictionary <MapTextureStage, bool[, ]>();
foreach (MapTextureStage maptexturestage in maptexturestages)
{
chunkusestexturestage.Add(maptexturestage, new bool[numxchunks, numychunks]);
}
for (int chunkx = 0; chunkx < numxchunks; chunkx++)
{
for (int chunky = 0; chunky < numychunks; chunky++)
{
// Console.WriteLine("chunk " + chunkx + " " + chunky);
for (int texturestageindex = 0; texturestageindex < maptexturestages.Count; texturestageindex++)
{
MapTextureStage texturestage = maptexturestages[texturestageindex];
//Console.WriteLine("texturestage " + texturestageindex + " " + texturestage.Operation );
if (texturestage.Operation == MapTextureStage.OperationType.Blend)
{
bool texturestageused = false;
// go through each point in chunk and check if texturestage is used
for (int mapx = chunkx * chunksize; mapx < (chunkx + 1) * chunksize && !texturestageused;
mapx++)
{
for (int mapy = chunky * chunksize; mapy < (chunky + 1) * chunksize && !texturestageused;
mapy++)
{
if (texturestage.Affects(mapx, mapy, width, height))
{
texturestageused = true;
}
}
}
chunkusestexturestage[texturestage][chunkx, chunky] = texturestageused;
// if (chunkusestexturestage[texturestageindex][chunkx, chunky])
//{
// Console.WriteLine("texturestage used: " + texturestageindex + " " + chunkx + " " + chunky);
//}
}
else if (texturestage.Operation == MapTextureStage.OperationType.Nop)
{
chunkusestexturestage[texturestage][chunkx, chunky] = false;
}
else
{
//Console.WriteLine("RenderableHeightMap,, cache chunk usage, true");
chunkusestexturestage[texturestage][chunkx, chunky] = true;
}
}
}
}
maxtexels = RendererSdl.GetInstance().MaxTexelUnits;
int totaltexturestagesneeded = 0;
foreach (MapTextureStage maptexturestage in maptexturestages)
{
totaltexturestagesneeded += maptexturestage.NumTextureStagesRequired;
}
multipass = false;
if (totaltexturestagesneeded > maxtexels)
{
multipass = true;
}
rendererpasses = new List <RendererPass>();
//maxtexels = 2;
//int currenttexel = 0;
multipass = true; // force multipass for now for simplicity
if (multipass)
{
for (int i = 0; i < maptexturestages.Count; i++)
{
MapTextureStage maptexturestage = maptexturestages[i];
int numtexturestagesrequired = maptexturestage.NumTextureStagesRequired;
if (numtexturestagesrequired > 0) // exclude Nops
{
RendererPass rendererpass = new RendererPass(maxtexels);
for (int j = 0; j < maptexturestage.NumTextureStagesRequired; j++)
{
rendererpass.AddStage(new RendererTextureStage(maptexturestage, j, true, width, height));
}
rendererpasses.Add(rendererpass);
}
}
}
}