| private GenTextures ( int n, uint textures ) : void | ||
| n | int | |
| textures | uint | |
| return | void | |
private void InitTexture(Bitmap bitmap)
{
#if DEBUG
var filename = string.Format("FontResource{0:yyyy-MM-dd_HH-mm-ss.ff}FontResource.log.bmp", DateTime.Now);
bitmap.Save(filename);
#endif
// generate texture.
// Lock the image bits (so that we can pass them to OGL).
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
//GL.ActiveTexture(GL.GL_TEXTURE0);
OpenGL.GetDelegateFor <OpenGL.glActiveTexture>()(OpenGL.GL_TEXTURE0);
var ids = new uint[1];
OpenGL.GenTextures(1, ids);
OpenGL.BindTexture(OpenGL.GL_TEXTURE_2D, ids[0]);
/* Clamping to edges is important to prevent artifacts when scaling */
/* We require 1 byte alignment when uploading texture data */
//GL.PixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, (int)OpenGL.GL_LINEAR);
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, (int)OpenGL.GL_CLAMP_TO_EDGE);
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, (int)OpenGL.GL_CLAMP_TO_EDGE);
/* Linear filtering usually looks best for text */
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, (int)OpenGL.GL_LINEAR);
OpenGL.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, (int)OpenGL.GL_RED,
bitmap.Width, bitmap.Height, 0, OpenGL.GL_RGB, OpenGL.GL_UNSIGNED_BYTE,
bitmapData.Scan0);
// Unlock the image.
bitmap.UnlockBits(bitmapData);
OpenGL.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
this.TextureSize = bitmap.Size;
this.FontTextureId = ids[0];
}
private void DoInitialize(System.Drawing.Bitmap bitmap)
{
// generate texture.
// Lock the image bits (so that we can pass them to OGL).
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
//GL.ActiveTexture(GL.GL_TEXTURE0);
OpenGL.GetDelegateFor <OpenGL.glActiveTexture>()(OpenGL.GL_TEXTURE0);
OpenGL.GenTextures(1, id);
OpenGL.BindTexture(OpenGL.GL_TEXTURE_2D, id[0]);
/* We require 1 byte alignment when uploading texture data */
//GL.PixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
/* Clamping to edges is important to prevent artifacts when scaling */
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, (int)OpenGL.GL_CLAMP_TO_EDGE);
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, (int)OpenGL.GL_CLAMP_TO_EDGE);
/* Linear filtering usually looks best for text */
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, (int)OpenGL.GL_LINEAR);
OpenGL.TexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, (int)OpenGL.GL_LINEAR);
OpenGL.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, (int)OpenGL.GL_RGBA,
bitmap.Width, bitmap.Height, 0, OpenGL.GL_BGRA, OpenGL.GL_UNSIGNED_BYTE,
bitmapData.Scan0);
// Unlock the image.
bitmap.UnlockBits(bitmapData);
OpenGL.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
}
/// <summary>
/// resources(bitmap etc.) can be disposed after this initialization.
/// </summary>
public void Initialize()
{
if (!this.initialized)
{
glActiveTexture(this.ActiveTextureIndex + OpenGL.GL_TEXTURE0);
OpenGL.GenTextures(1, id);
TextureTarget target = this.Target;
OpenGL.BindTexture(target, id[0]);
this.Sampler.Bind(this.ActiveTextureIndex, target);
this.ImageFiller.Fill();
//OpenGL.GenerateMipmap((MipmapTarget)((uint)target));// TODO: does this work?
//this.SamplerBuilder.Unbind(OpenGL.GL_TEXTURE0 - OpenGL.GL_TEXTURE0, this.Target);
OpenGL.BindTexture(this.Target, 0);
this.initialized = true;
}
}
/// <summary>
/// resources(bitmap etc.) can be disposed after this initialization.
/// </summary>
public void Initialize()
{
if (!this.initialized)
{
//GL.ActiveTexture(GL.GL_TEXTURE0);
OpenGL.GetDelegateFor <OpenGL.glActiveTexture>()(this.ActiveTexture);
OpenGL.GenTextures(1, id);
OpenGL.BindTexture(this.Target, id[0]);
this.SamplerBuilder.Bind(this.ActiveTexture - OpenGL.GL_TEXTURE0, this.Target);
this.ImageBuilder.Build(this.Target);
OpenGL.GenerateMipmap((MipmapTarget)((uint)this.Target));// TODO: does this work?
//this.SamplerBuilder.Unbind(OpenGL.GL_TEXTURE0 - OpenGL.GL_TEXTURE0, this.Target);
OpenGL.BindTexture(this.Target, 0);
this.initialized = true;
}
}
public void setFormat(uint internalfmt, int width, int height, uint format,
bool mipmap, bool interpol)
{
m_width = width;
m_height = height;
m_internalfmt = internalfmt;
m_fmt = format;
m_mipmap = mipmap;
m_interpol = interpol;
m_texture_target = OpenGL.GL_TEXTURE_2D;
OpenGL.GenTextures(1, m_texture_id);
OpenGL.BindTexture(m_texture_target, m_texture_id[0]);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
if (mipmap)
{
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR_MIPMAP_LINEAR);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_GENERATE_MIPMAP, OpenGL.GL_TRUE);
}
else
{
if (interpol)
{
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
}
else
{
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_NEAREST);
OpenGL.TexParameterf(m_texture_target, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_NEAREST);
}
OpenGL.TexParameteri(m_texture_target, OpenGL.GL_GENERATE_MIPMAP, (int)OpenGL.GL_FALSE);
}
OpenGL.TexImage2D(m_texture_target, 0, internalfmt, width, height, 0,
format, OpenGL.GL_UNSIGNED_BYTE, IntPtr.Zero);
OpenGL.BindTexture(m_texture_target, 0);
}
