public void Update(Bitmap bm)
{
if (bm != null)
{
BitmapData bd = bm.LockBits(new Rectangle(0, 0, bm.Width, bm.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
if (bd.Stride != bd.Width * 4)
{
throw new ApplicationException("Stride not a multiple of width");
}
unsafe
{
uint tex = m_texture;
if (tex == 0)
{
OpenGL.glGenTextures(1, &tex);
}
m_texture = tex;
OpenGL.glBindTexture(OpenGL.GL_TEXTURE_2D, m_texture);
OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, (int)OpenGL.GL_LINEAR_MIPMAP_LINEAR);
OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, (int)OpenGL.GL_LINEAR_MIPMAP_LINEAR);
OpenGL.glPixelStorei(OpenGL.GL_UNPACK_ALIGNMENT, 1);
//OpenGL.glTexImage2D(OpenGL.GL_TEXTURE_2D, 0, (int)OpenGL.GL_RGBA8, (int)m_atlasWidth, (int)m_atlasHeight, 0, OpenGL.GL_BGRA_EXT, OpenGL.GL_UNSIGNED_BYTE, bd.Scan0.ToPointer());
GLU.gluBuild2DMipmaps(OpenGL.GL_TEXTURE_2D, (int)OpenGL.GL_RGBA8, (int)bm.Width, (int)bm.Height, OpenGL.GL_BGRA_EXT, OpenGL.GL_UNSIGNED_BYTE, bd.Scan0.ToPointer());
}
bm.UnlockBits(bd);
}
}
private void SyncTexture()
{
OpenGL.glBindTexture(OpenGL.GL_TEXTURE_2D, m_texture);
unsafe
{
BitmapData bd = m_bitmap.LockBits(new Rectangle(0, 0, m_bitmap.Width, m_bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
if (bd.Stride != bd.Width * 4)
{
throw new ApplicationException("Stride not a multiple of width");
}
//OpenGL.glTexImage2D(OpenGL.GL_TEXTURE_2D, 0, (int)OpenGL.GL_RGBA8, (int)m_atlasWidth, (int)m_atlasHeight, 0, OpenGL.GL_BGRA_EXT, OpenGL.GL_UNSIGNED_BYTE, bd.Scan0.ToPointer());
GLU.gluBuild2DMipmaps(OpenGL.GL_TEXTURE_2D, (int)OpenGL.GL_ALPHA, (int)m_atlasWidth, (int)m_atlasHeight, OpenGL.GL_BGRA_EXT, OpenGL.GL_UNSIGNED_BYTE, bd.Scan0.ToPointer());
m_bitmap.UnlockBits(bd);
}
m_dirty = false;
}
public unsafe void LoadOpenGL()
{
//Debug.Assert( this.ParentTextures != null );
Debug.Assert(this.IsBitmapLoaded == true);
Debug.Assert(this.IsOpenGLLoaded == false);
// load opengl texture
GL.glEnable(GL.Option.Texture2D);
// create new OpenGL texture handle if needed.
if (_handle == -1)
{
uint[] handles = new uint[1];
GL.glGenTextures(1, handles);
_handle = (int)handles[0];
//OpenGLTextureCount ++;
GL.glErrorCheck();
}
GL.glBindTexture(GL.Texture.Texture2D, (uint)_handle);
GL.glErrorCheck();
if (this.Clamp)
{
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP);
}
else
{
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT);
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT);
}
GL.glErrorCheck();
if (this.Mipmap == false)
{
Debug.Assert(this.MinFilter != GL.TextureFilter.LinearMipmapLinear, this.Mipmap + " " + this.MinFilter);
Debug.Assert(this.MinFilter != GL.TextureFilter.LinearMipmapNearest, this.Mipmap + " " + this.MinFilter);
Debug.Assert(this.MinFilter != GL.TextureFilter.NearestMipmapLinear, this.Mipmap + " " + this.MinFilter);
Debug.Assert(this.MinFilter != GL.TextureFilter.NearestMipmapNearest, this.Mipmap + " " + this.MinFilter);
}
Debug.Assert(this.MaxFilter != GL.TextureFilter.LinearMipmapLinear, this.Mipmap + " " + this.MaxFilter);
Debug.Assert(this.MaxFilter != GL.TextureFilter.LinearMipmapNearest, this.Mipmap + " " + this.MaxFilter);
Debug.Assert(this.MaxFilter != GL.TextureFilter.NearestMipmapLinear, this.Mipmap + " " + this.MaxFilter);
Debug.Assert(this.MaxFilter != GL.TextureFilter.NearestMipmapNearest, this.Mipmap + " " + this.MaxFilter);
GL.glTexParameteri(GL.Texture.Texture2D, GL.TexParamPName.TextureMinFilter, this.MinFilter);
GL.glErrorCheck();
GL.glTexParameteri(GL.Texture.Texture2D, GL.TexParamPName.TextureMagFilter, this.MaxFilter);
GL.glErrorCheck();
fixed(uint *pData = & (_data[0]))
{
if (this.Mipmap == true)
{
GLU.gluBuild2DMipmaps(GL.GL_TEXTURE_2D, (int)GL.GL_RGBA8, _width, _height,
GL.GL_BGRA_EXT, GL.GL_UNSIGNED_BYTE, (void *)pData);
GL.glErrorCheck();
}
else
{
GL.glTexImage2D(GL.Texture.Texture2D, 0, GL.InternalFormat.RGBA8, _width, _height, 0,
GL.PixelFormat.BGRAExt, GL.DataType.UnsignedByte, (void *)pData);
GL.glErrorCheck();
}
}
_threadParent = Thread.CurrentThread;
Debug.Assert(this.IsOpenGLLoaded == true);
}
