private void UpsampleTileData(Context context, ClipmapLevel level, RasterDataDetails details, RasterTileRegion region)
{
ClipmapLevel coarserLevel = level.CoarserLevel;
if (coarserLevel == null)
{
return;
}
Texture2D levelTexture;
Texture2D coarserLevelTexture;
Vector2I originInTextures;
Vector2I coarserOriginInTextures;
ClipmapLevel.Extent nextExtent;
ClipmapLevel.Extent coarserNextExtent;
if (details.Type == RasterType.Terrain)
{
levelTexture = level.HeightTexture;
coarserLevelTexture = coarserLevel.HeightTexture;
originInTextures = level.OriginInTextures;
coarserOriginInTextures = coarserLevel.OriginInTextures;
nextExtent = level.NextExtent;
coarserNextExtent = coarserLevel.NextExtent;
}
else
{
levelTexture = level.ImageryTexture;
coarserLevelTexture = coarserLevel.ImageryTexture;
originInTextures = level.OriginInImagery;
coarserOriginInTextures = coarserLevel.OriginInImagery;
nextExtent = level.NextImageryExtent;
coarserNextExtent = coarserLevel.NextImageryExtent;
}
context.TextureUnits[0].Texture = coarserLevelTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.LinearRepeat;
_framebuffer.ColorAttachments[_upsampleTexelOutput] = levelTexture;
int fineClipmapSize = nextExtent.East - nextExtent.West + 1;
int destWest = (originInTextures.X + (region.Tile.West + region.West - nextExtent.West)) % fineClipmapSize;
int destSouth = (originInTextures.Y + (region.Tile.South + region.South - nextExtent.South)) % fineClipmapSize;
int coarseClipmapSize = coarserNextExtent.East - coarserNextExtent.West + 1;
double sourceWest = (coarserOriginInTextures.X + ((region.Tile.West + region.West) / 2.0 - coarserNextExtent.West)) % coarseClipmapSize;
double sourceSouth = (coarserOriginInTextures.Y + ((region.Tile.South + region.South) / 2.0 - coarserNextExtent.South)) % coarseClipmapSize;
int width = region.East - region.West + 1;
int height = region.North - region.South + 1;
_upsampleSourceOrigin.Value = new Vector2F((float)sourceWest, (float)sourceSouth);
_upsampleUpdateSize.Value = new Vector2F(width, height);
_upsampleDestinationOffset.Value = new Vector2F(destWest, destSouth);
_upsampleOneOverTextureSize.Value = new Vector2F(1.0f / coarserLevelTexture.Description.Width, 1.0f / coarserLevelTexture.Description.Height);
// Save the current state of the context
Rectangle oldViewport = context.Viewport;
Framebuffer oldFramebuffer = context.Framebuffer;
// Update the context and draw
context.Viewport = new Rectangle(0, 0, levelTexture.Description.Width, levelTexture.Description.Height);
context.Framebuffer = _framebuffer;
context.Draw(_unitQuadPrimitiveType, _upsampleDrawState, _sceneState);
// Restore the context to its original state
context.Framebuffer = oldFramebuffer;
context.Viewport = oldViewport;
}
private void RenderTileToLevelTexture(Context context, ClipmapLevel level, RasterDataDetails details, RasterTileRegion region, Texture2D tileTexture)
{
Texture2D levelTexture;
Vector2I originInTextures;
ClipmapLevel.Extent nextExtent;
if (details.Type == RasterType.Terrain)
{
levelTexture = level.HeightTexture;
originInTextures = level.OriginInTextures;
nextExtent = level.NextExtent;
}
else
{
levelTexture = level.ImageryTexture;
originInTextures = level.OriginInImagery;
nextExtent = level.NextImageryExtent;
}
context.TextureUnits[0].Texture = tileTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.NearestClamp;
_framebuffer.ColorAttachments[_updateTexelOutput] = levelTexture;
int clipmapSize = nextExtent.East - nextExtent.West + 1;
int destWest = (originInTextures.X + (region.Tile.West + region.West - nextExtent.West)) % clipmapSize;
int destSouth = (originInTextures.Y + (region.Tile.South + region.South - nextExtent.South)) % clipmapSize;
int width = region.East - region.West + 1;
int height = region.North - region.South + 1;
_updateSourceOrigin.Value = new Vector2F(region.West, region.South);
_updateUpdateSize.Value = new Vector2F(width, height);
_updateDestinationOffset.Value = new Vector2F(destWest, destSouth);
// Save the current state of the context
Rectangle oldViewport = context.Viewport;
Framebuffer oldFramebuffer = context.Framebuffer;
// Update the context and draw
context.Viewport = new Rectangle(0, 0, levelTexture.Description.Width, levelTexture.Description.Height);
context.Framebuffer = _framebuffer;
context.Draw(_unitQuadPrimitiveType, _updateDrawState, _sceneState);
// Restore the context to its original state
context.Framebuffer = oldFramebuffer;
context.Viewport = oldViewport;
}
public RasterTileRegion[] GetTilesInExtent(int west, int south, int east, int north)
{
int tileXStart = west / LongitudePostsPerTile;
int tileXStop = east / LongitudePostsPerTile;
if (west < 0)
{
--tileXStart;
}
if (east < 0)
{
--tileXStop;
}
int tileYStart = south / LatitudePostsPerTile;
int tileYStop = north / LatitudePostsPerTile;
if (south < 0)
{
--tileYStart;
}
if (north < 0)
{
--tileYStop;
}
int tileWidth = tileXStop - tileXStart + 1;
int tileHeight = tileYStop - tileYStart + 1;
RasterTileRegion[] result = new RasterTileRegion[tileWidth * tileHeight];
int resultIndex = 0;
for (int tileY = tileYStart; tileY <= tileYStop; ++tileY)
{
int tileYOrigin = tileY * LatitudePostsPerTile;
int currentSouth = south - tileYOrigin;
if (currentSouth < 0)
{
currentSouth = 0;
}
int currentNorth = north - tileYOrigin;
if (currentNorth >= LatitudePostsPerTile)
{
currentNorth = LatitudePostsPerTile - 1;
}
for (int tileX = tileXStart; tileX <= tileXStop; ++tileX)
{
int tileXOrigin = tileX * LongitudePostsPerTile;
int currentWest = west - tileXOrigin;
if (currentWest < 0)
{
currentWest = 0;
}
int currentEast = east - tileXOrigin;
if (currentEast >= LongitudePostsPerTile)
{
currentEast = LongitudePostsPerTile - 1;
}
RasterTileIdentifier tileID = new RasterTileIdentifier(_level, tileX, tileY);
RasterTile tile = Source.GetTile(tileID);
result[resultIndex] = new RasterTileRegion(tile, currentWest, currentSouth, currentEast, currentNorth);
++resultIndex;
}
}
return(result);
}
private void UpsampleTileData(Context context, ClipmapLevel level, RasterDataDetails details, RasterTileRegion region)
{
ClipmapLevel coarserLevel = level.CoarserLevel;
if (coarserLevel == null)
return;
Texture2D levelTexture;
Texture2D coarserLevelTexture;
Vector2I originInTextures;
Vector2I coarserOriginInTextures;
ClipmapLevel.Extent nextExtent;
ClipmapLevel.Extent coarserNextExtent;
if (details.Type == RasterType.Terrain)
{
levelTexture = level.HeightTexture;
coarserLevelTexture = coarserLevel.HeightTexture;
originInTextures = level.OriginInTextures;
coarserOriginInTextures = coarserLevel.OriginInTextures;
nextExtent = level.NextExtent;
coarserNextExtent = coarserLevel.NextExtent;
}
else
{
levelTexture = level.ImageryTexture;
coarserLevelTexture = coarserLevel.ImageryTexture;
originInTextures = level.OriginInImagery;
coarserOriginInTextures = coarserLevel.OriginInImagery;
nextExtent = level.NextImageryExtent;
coarserNextExtent = coarserLevel.NextImageryExtent;
}
context.TextureUnits[0].Texture = coarserLevelTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.LinearRepeat;
_framebuffer.ColorAttachments[_upsampleTexelOutput] = levelTexture;
int fineClipmapSize = nextExtent.East - nextExtent.West + 1;
int destWest = (originInTextures.X + (region.Tile.West + region.West - nextExtent.West)) % fineClipmapSize;
int destSouth = (originInTextures.Y + (region.Tile.South + region.South - nextExtent.South)) % fineClipmapSize;
int coarseClipmapSize = coarserNextExtent.East - coarserNextExtent.West + 1;
double sourceWest = (coarserOriginInTextures.X + ((region.Tile.West + region.West) / 2.0 - coarserNextExtent.West)) % coarseClipmapSize;
double sourceSouth = (coarserOriginInTextures.Y + ((region.Tile.South + region.South) / 2.0 - coarserNextExtent.South)) % coarseClipmapSize;
int width = region.East - region.West + 1;
int height = region.North - region.South + 1;
_upsampleSourceOrigin.Value = new Vector2F((float)sourceWest, (float)sourceSouth);
_upsampleUpdateSize.Value = new Vector2F(width, height);
_upsampleDestinationOffset.Value = new Vector2F(destWest, destSouth);
_upsampleOneOverTextureSize.Value = new Vector2F(1.0f / coarserLevelTexture.Description.Width, 1.0f / coarserLevelTexture.Description.Height);
// Save the current state of the context
Rectangle oldViewport = context.Viewport;
Framebuffer oldFramebuffer = context.Framebuffer;
// Update the context and draw
context.Viewport = new Rectangle(0, 0, levelTexture.Description.Width, levelTexture.Description.Height);
context.Framebuffer = _framebuffer;
context.Draw(_unitQuadPrimitiveType, _upsampleDrawState, _sceneState);
// Restore the context to its original state
context.Framebuffer = oldFramebuffer;
context.Viewport = oldViewport;
}
private void RenderTileToLevelTexture(Context context, ClipmapLevel level, RasterDataDetails details, RasterTileRegion region, Texture2D tileTexture)
{
Texture2D levelTexture;
Vector2I originInTextures;
ClipmapLevel.Extent nextExtent;
if (details.Type == RasterType.Terrain)
{
levelTexture = level.HeightTexture;
originInTextures = level.OriginInTextures;
nextExtent = level.NextExtent;
}
else
{
levelTexture = level.ImageryTexture;
originInTextures = level.OriginInImagery;
nextExtent = level.NextImageryExtent;
}
context.TextureUnits[0].Texture = tileTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.NearestClamp;
_framebuffer.ColorAttachments[_updateTexelOutput] = levelTexture;
int clipmapSize = nextExtent.East - nextExtent.West + 1;
int destWest = (originInTextures.X + (region.Tile.West + region.West - nextExtent.West)) % clipmapSize;
int destSouth = (originInTextures.Y + (region.Tile.South + region.South - nextExtent.South)) % clipmapSize;
int width = region.East - region.West + 1;
int height = region.North - region.South + 1;
_updateSourceOrigin.Value = new Vector2F(region.West, region.South);
_updateUpdateSize.Value = new Vector2F(width, height);
_updateDestinationOffset.Value = new Vector2F(destWest, destSouth);
// Save the current state of the context
Rectangle oldViewport = context.Viewport;
Framebuffer oldFramebuffer = context.Framebuffer;
// Update the context and draw
context.Viewport = new Rectangle(0, 0, levelTexture.Description.Width, levelTexture.Description.Height);
context.Framebuffer = _framebuffer;
context.Draw(_unitQuadPrimitiveType, _updateDrawState, _sceneState);
// Restore the context to its original state
context.Framebuffer = oldFramebuffer;
context.Viewport = oldViewport;
}
public RasterTileRegion[] GetTilesInExtent(int west, int south, int east, int north)
{
int tileXStart = west / LongitudePostsPerTile;
int tileXStop = east / LongitudePostsPerTile;
if (west < 0)
{
--tileXStart;
}
if (east < 0)
{
--tileXStop;
}
int tileYStart = south / LatitudePostsPerTile;
int tileYStop = north / LatitudePostsPerTile;
if (south < 0)
{
--tileYStart;
}
if (north < 0)
{
--tileYStop;
}
int tileWidth = tileXStop - tileXStart + 1;
int tileHeight = tileYStop - tileYStart + 1;
RasterTileRegion[] result = new RasterTileRegion[tileWidth * tileHeight];
int resultIndex = 0;
for (int tileY = tileYStart; tileY <= tileYStop; ++tileY)
{
int tileYOrigin = tileY * LatitudePostsPerTile;
int currentSouth = south - tileYOrigin;
if (currentSouth < 0)
currentSouth = 0;
int currentNorth = north - tileYOrigin;
if (currentNorth >= LatitudePostsPerTile)
currentNorth = LatitudePostsPerTile - 1;
for (int tileX = tileXStart; tileX <= tileXStop; ++tileX)
{
int tileXOrigin = tileX * LongitudePostsPerTile;
int currentWest = west - tileXOrigin;
if (currentWest < 0)
currentWest = 0;
int currentEast = east - tileXOrigin;
if (currentEast >= LongitudePostsPerTile)
currentEast = LongitudePostsPerTile - 1;
RasterTileIdentifier tileID = new RasterTileIdentifier(_level, tileX, tileY);
RasterTile tile = Source.GetTile(tileID);
result[resultIndex] = new RasterTileRegion(tile, currentWest, currentSouth, currentEast, currentNorth);
++resultIndex;
}
}
return result;
}
