private bool loadPage(VTexPage page, StagingBufferSet stagingBuffers)
{
bool added = false;
try
{
//First see if we still have that page in our virtual texture pool, possible optimization to sort these to the front of the list
if (physicalPageQueue.Count > 0) //Do we have pages available
{
PTexPage pTexPage = physicalPageQueue[0]; //The physical page candidate, do not modify before usedPhysicalPages if statement below
if (loadImages(page, pTexPage, stagingBuffers))
{
//Alert old texture of removal if there was one, Do not modify pTexPage above this if block, we need the old data
IndirectionTexture oldIndirectionTexture = null;
if (pTexPage.VirtualTexturePage != null)
{
if (virtualTextureManager.getIndirectionTexture(pTexPage.VirtualTexturePage.indirectionTexId, out oldIndirectionTexture))
{
oldIndirectionTexture.removePhysicalPage(pTexPage);
}
physicalPagePool.Remove(pTexPage.VirtualTexturePage); //Be sure to remove the page from the pool if it was used previously
}
physicalPageQueue.RemoveAt(0);
pTexPage.VirtualTexturePage = page;
usedPhysicalPages.Add(page, pTexPage);
//Add to new indirection texture
IndirectionTexture newIndirectionTex;
if (virtualTextureManager.getIndirectionTexture(page.indirectionTexId, out newIndirectionTex))
{
newIndirectionTex.addPhysicalPage(pTexPage);
stagingBuffers.setIndirectionTextures(oldIndirectionTexture, newIndirectionTex);
}
added = true;
}
}
}
catch (Exception ex)
{
Logging.Log.Debug("{0} loading page {1}. Message: {2}", ex.GetType().Name, page.ToString(), ex.Message);
}
return(added);
}
internal void addPhysicalPage(PTexPage pTexPage)
{
#if !DEBUG_MIP_LEVELS
//Store 1x1 as mip 0, 2x2 as 1 4x4 as 2 etc, this way we can directly shift the decimal place
//Then we will take fract from that
//Store the page address as bytes
var vTextPage = pTexPage.VirtualTexturePage;
IntColor color = new IntColor();
color.A = 255;
//Reverse the mip level (0 becomes highest level (least texels) and highesetMip becomes the lowest level (most texels, full size)
color.B = (byte)(highestMip - vTextPage.mip - 1); //Typecast bad, try changing the type in the struct to byte
color.R = (byte)pTexPage.pageX;
color.G = (byte)pTexPage.pageY;
fiBitmap[vTextPage.mip].setColorAtARGB(color.ARGB, vTextPage.x, vTextPage.y, 0);
fillOutLowerMips(vTextPage, color, (c1, c2) => c1.B - c2.B >= 0);
#endif
}
internal void removePhysicalPage(PTexPage pTexPage)
{
#if !DEBUG_MIP_LEVELS
var vTextPage = pTexPage.VirtualTexturePage;
//Replace color with the one on the higher mip level
IntColor color;
if (vTextPage.mip + 1 < highestMip)
{
color = new IntColor(fiBitmap[vTextPage.mip + 1].getColorAtARGB((uint)vTextPage.x >> 1, (uint)vTextPage.y >> 1, 0));
}
else
{
color = new IntColor();
color.B = (byte)(highestMip - vTextPage.mip - 1);
}
byte replacementMipLevel = (byte)(highestMip - vTextPage.mip - 1);
fiBitmap[vTextPage.mip].setColorAtARGB(color.ARGB, vTextPage.x, vTextPage.y, 0);
fillOutLowerMips(vTextPage, color, (c1, c2) => c2.B == replacementMipLevel);
#endif
}
/// <summary>
/// Load the given image. Note that pTexPage is constant for the duration of this function call
/// </summary>
/// <param name="page"></param>
/// <param name="pTexPage"></param>
/// <returns></returns>
private bool loadImages(VTexPage page, PTexPage pTexPage, StagingBufferSet stagingBuffers)
{
int stagingImageIndex = 0;
bool usedPhysicalPage = false;
IndirectionTexture indirectionTexture;
if (virtualTextureManager.getIndirectionTexture(page.indirectionTexId, out indirectionTexture))
{
//Fire off image loading and blitting tasks
foreach (var textureUnit in indirectionTexture.OriginalTextures)
{
copyTostagingImageTasks[stagingImageIndex] = fireCopyToStaging(page, stagingBuffers, indirectionTexture, textureUnit);
++stagingImageIndex;
}
//Wait for results
for (int i = 0; i < stagingImageIndex; ++i)
{
copyTostagingImageTasks[i].Wait();
if (copyTostagingImageTasks[i].Result)
{
usedPhysicalPage = true;
}
}
//Single threaded
//foreach (var textureUnit in indirectionTexture.OriginalTextures)
//{
// if (copyToStaging(page, stagingBuffers, indirectionTexture, textureUnit))
// {
// usedPhysicalPage = true;
// }
//}
//Update staging buffer info
stagingBuffers.Dest = new IntRect(pTexPage.x, pTexPage.y, textelsPerPhysicalPage, textelsPerPhysicalPage);
}
return(usedPhysicalPage);
}
