// Public facing interface for loading a texture. Given a texture path it will return a handle
// (index into managedTextures vector) which can later be used to draw the texture.
public int LoadTexture(string texturePath)
{
if (!isInitialized)
{
Error("Trying to load texture without intializing texture manager!");
}
// First, check if the texture is already being managed. If it is, increase ref count and
// return the textures index.
for (int i = 0; i < managedTextures.Count; ++i)
{
if (managedTextures[i].path == texturePath)
{
managedTextures[i].refCount += 1;
return(i);
}
}
// If the texture was not being tracked, go trough the list and look for an open space, if an
// open space is found, unload it's texture from GPU memory, and load our new texture, override
// the reference count, path, width, height and texture handle with new values
for (int i = 0; i < managedTextures.Count; ++i)
{
if (managedTextures[i].refCount <= 0)
{
GL.DeleteTexture(managedTextures[i].glHandle);
managedTextures[i].glHandle = LoadGLTexture(texturePath, out managedTextures[i].width, out managedTextures[i].height, UseNearestFiltering);
managedTextures[i].refCount = 1;
managedTextures[i].path = texturePath;
return(i);
}
}
// Finally we get here if the texture we are trying to load is not an already managed texture
// and we have no open spots for new textures to be managed. Here we just create a new texture
// and add it to the managed textures vector
TextureInstance newTexture = new TextureInstance();
newTexture.refCount = 1;
newTexture.glHandle = LoadGLTexture(texturePath, out newTexture.width, out newTexture.height, UseNearestFiltering);
newTexture.path = texturePath;
managedTextures.Add(newTexture);
return(managedTextures.Count - 1);
}
public int LoadTexture(string texturePath, bool UseNearestFiltering = false)
{
InitCheck("Trying to laod texture without initializing TextureManager!");
if (string.IsNullOrEmpty(texturePath))
{
Error("Load texture file path was null");
throw new ArgumentException(texturePath);
}
//check if texture is already loaded, increase ref count if it is
for (int i = 0; i < managedTextures.Count; i++)
{
if (managedTextures[i].path == texturePath)
{
managedTextures[i].refCount++;
return(i);
}
}
//try to recycle an old texture handle
for (int i = 0; i < managedTextures.Count; i++)
{
if (managedTextures[i].refCount <= 0)
{
managedTextures[i].glHandle = LoadGLTexture(texturePath, out managedTextures[i].width, out managedTextures[i].height, UseNearestFiltering);
managedTextures[i].refCount = 1;
managedTextures[i].path = texturePath;
return(i);
}
}
//texture no loaded, no recyclable slots in array
//load texture into new slot
TextureInstance newTexture = new TextureInstance();
newTexture.refCount = 1;
newTexture.glHandle = LoadGLTexture(texturePath, out newTexture.width, out newTexture.height, UseNearestFiltering);
newTexture.path = texturePath;
managedTextures.Add(newTexture);
return(managedTextures.Count - 1);
}
// Public facing interface for loading a texture. Given a texture path it will return a handle
// (index into managedTextures vector) which can later be used to draw the texture.
public int LoadTexture(string texturePath)
{
if (!isInitialized) {
Error("Trying to load texture without intializing texture manager!");
}
// First, check if the texture is already being managed. If it is, increase ref count and
// return the textures index.
for (int i = 0; i < managedTextures.Count; ++i) {
if (managedTextures[i].path == texturePath) {
managedTextures[i].refCount += 1;
return i;
}
}
// If the texture was not being tracked, go trough the list and look for an open space, if an
// open space is found, unload it's texture from GPU memory, and load our new texture, override
// the reference count, path, width, height and texture handle with new values
for (int i = 0; i < managedTextures.Count; ++i) {
if (managedTextures[i].refCount <= 0) {
GL.DeleteTexture(managedTextures[i].glHandle);
managedTextures[i].glHandle = LoadGLTexture(texturePath, out managedTextures[i].width, out managedTextures[i].height);
managedTextures[i].refCount = 1;
managedTextures[i].path = texturePath;
return i;
}
}
// Finally we get here if the texture we are trying to load is not an already managed texture
// and we have no open spots for new textures to be managed. Here we just create a new texture
// and add it to the managed textures vector
TextureInstance newTexture = new TextureInstance();
newTexture.refCount = 1;
newTexture.glHandle = LoadGLTexture(texturePath, out newTexture.width, out newTexture.height);
newTexture.path = texturePath;
managedTextures.Add(newTexture);
return managedTextures.Count - 1;
}
public int LoadTexture(string texturePath, bool UseNearestFiltering = false) {
InitCheck("Trying to laod texture without initializing TextureManager!");
if (string.IsNullOrEmpty(texturePath)) {
Error("Load texture file path was null");
throw new ArgumentException(texturePath);
}
//check if texture is already loaded, increase ref count if it is
for (int i = 0; i < managedTextures.Count; i++) {
if (managedTextures[i].path == texturePath) {
managedTextures[i].refCount++;
return i;
}
}
//try to recycle an old texture handle
for (int i = 0; i < managedTextures.Count; i++) {
if (managedTextures[i].refCount <= 0) {
managedTextures[i].glHandle = LoadGLTexture(texturePath, out managedTextures[i].width, out managedTextures[i].height, UseNearestFiltering);
managedTextures[i].refCount = 1;
managedTextures[i].path = texturePath;
return i;
}
}
//texture no loaded, no recyclable slots in array
//load texture into new slot
TextureInstance newTexture = new TextureInstance();
newTexture.refCount = 1;
newTexture.glHandle = LoadGLTexture(texturePath, out newTexture.width, out newTexture.height, UseNearestFiltering);
newTexture.path = texturePath;
managedTextures.Add(newTexture);
return managedTextures.Count - 1;
}
