public static FontTexture CreateFont(Library ftLibrary, string filename, ushort fontSize)
{
if(ftLibrary != null)
{
var glf = new FontTexture();
Face face = null;
try
{
face = new Face(ftLibrary, filename, 0);
}
catch
{
return null;
}
glf.FTFace = face;
Array.Resize(ref glf.Glyphs, glf.FTFace.GlyphCount);
glf.GLMaxTexWidth = GL.GetInteger(GetPName.MaxTextureSize);
glf.GLTexWidth = glf.GLMaxTexWidth;
glf.GLTexIndexes = new uint[0];
glf.GLRealTexIndexesCount = 0;
glf.GLFontColor = new [] {0.0f, 0.0f, 0.0f, 1.0f};
Resize(glf, fontSize);
glf.FTFace.SelectCharmap(Encoding.Unicode);
return glf;
}
return null;
}
public void InitFonts()
{
font = Global.FontManager.GetFont(FontType.Console);
SetLineInterval(spacing);
}
public static FontTexture CreateFontMem(Library ftLibrary, byte[] faceData, ushort fontSize)
{
if (ftLibrary != null)
{
var glf = new FontTexture();
Face face = null;
try
{
face = new Face(ftLibrary, faceData, 0);
}
catch
{
glf.Dispose();
return null;
}
glf.FTFace = face;
Array.Resize(ref glf.Glyphs, glf.FTFace.GlyphCount);
glf.GLMaxTexWidth = GL.GetInteger(GetPName.MaxTextureSize);
glf.GLTexWidth = glf.GLMaxTexWidth;
glf.GLTexIndexes = new uint[0];
glf.GLRealTexIndexesCount = 0;
Resize(glf, fontSize);
glf.FTFace.SelectCharmap(Encoding.Unicode);
return glf;
}
return null;
}
public static unsafe void RenderStr(FontTexture glf, float x, float y, string text)
{
text = text.NullCheck();
byte* nch;
var charr = Helper.GetStringBPUTF8(text);
FTVector26Dot6 kern;
if(glf?.FTFace == null || text == null || text[0] == '\0')
{
return;
}
FontBuffer.Bind();
fixed (byte* ptr = charr)
{
var ch = ptr;
if (glf.GLRealTexIndexesCount == 1)
{
var p = FontBuffer.ResizeAndMap(48 * (int) Helper.UTF8StrLen(text) * sizeof (float));
uint elementsCount = 0;
uint curr_utf32, next_utf32;
nch = Helper.UTF8ToUTF32(ch, &curr_utf32);
curr_utf32 = glf.FTFace.GetCharIndex(curr_utf32);
while (*ch != 0)
{
var nch2 = Helper.UTF8ToUTF32(nch, &next_utf32);
next_utf32 = glf.FTFace.GetCharIndex(next_utf32);
ch = nch;
nch = nch2;
fixed (CharInfo* g = &glf.Glyphs[(int) curr_utf32])
{
kern = glf.FTFace.GetKerning(curr_utf32, next_utf32, KerningMode.Unscaled);
curr_utf32 = next_utf32;
if (g->TexIndex != 0)
{
var x0 = x + g->Left;
var x1 = x0 + g->Width;
var y0 = y + g->Top;
var y1 = y0 - g->Height;
*p = x0;
p++;
*p = y0;
p++;
*p = g->TexX0;
p++;
*p = g->TexY0;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x1;
p++;
*p = y0;
p++;
*p = g->TexX1;
p++;
*p = g->TexY0;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x1;
p++;
*p = y1;
p++;
*p = g->TexX1;
p++;
*p = g->TexY1;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
elementsCount++;
*p = x0;
p++;
*p = y0;
p++;
*p = g->TexX0;
p++;
*p = g->TexY0;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x1;
p++;
*p = y1;
p++;
*p = g->TexX1;
p++;
*p = g->TexY1;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x0;
p++;
*p = y1;
p++;
*p = g->TexX0;
p++;
*p = g->TexY1;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
elementsCount++;
}
x += (kern.X.ToSingle() + g->AdvanceX) / 64.0f;
y += (kern.Y.ToSingle() + g->AdvanceY) / 64.0f;
}
}
FontBuffer.Unmap();
// RENDER
if (elementsCount != 0)
{
GL.BindTexture(TextureTarget.Texture2D, glf.GLTexIndexes[0]);
GL.DrawArrays(PrimitiveType.Triangles, 0, (int) elementsCount * 3);
}
}
else
{
uint activeTexture = 0;
uint curr_utf32, next_utf32;
nch = Helper.UTF8ToUTF32(ch, &curr_utf32);
curr_utf32 = glf.FTFace.GetCharIndex(curr_utf32);
for (; *ch != 0;)
{
var p = FontBuffer.ResizeAndMap(32 * sizeof (float));
var nch2 = Helper.UTF8ToUTF32(nch, &next_utf32);
next_utf32 = glf.FTFace.GetCharIndex(next_utf32);
ch = nch;
nch = nch2;
fixed (CharInfo* g = &glf.Glyphs[(int) curr_utf32])
{
kern = glf.FTFace.GetKerning(curr_utf32, next_utf32, KerningMode.Unscaled);
curr_utf32 = next_utf32;
if (g->TexIndex != 0)
{
if (activeTexture != g->TexIndex)
{
GL.BindTexture(TextureTarget.Texture2D, g->TexIndex);
}
// RENDER
var x0 = x + g->Left;
var x1 = x0 + g->Width;
var y0 = y + g->Top;
var y1 = y0 - g->Height;
*p = x0;
p++;
*p = y0;
p++;
*p = g->TexX0;
p++;
*p = g->TexY0;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x1;
p++;
*p = y0;
p++;
*p = g->TexX1;
p++;
*p = g->TexY0;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x1;
p++;
*p = y1;
p++;
*p = g->TexX1;
p++;
*p = g->TexY1;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
p += 4;
*p = x0;
p++;
*p = y1;
p++;
*p = g->TexX0;
p++;
*p = g->TexY1;
p++;
fixed (float* glfc = glf.GLFontColor) Helper.Vec4CopyPointer(p, glfc);
FontBuffer.Unmap();
GL.DrawArrays(PrimitiveType.TriangleFan, 0, 4);
}
x += (kern.X.ToSingle() + g->AdvanceX) / 64.0f;
y += (kern.Y.ToSingle() + g->AdvanceY) / 64.0f;
}
}
}
}
}
public static ushort GetFontSize(FontTexture glf)
{
if(glf?.FTFace == null)
{
return 0;
}
return glf.FontSize;
}
public static unsafe void GetStringBB(FontTexture glf, string text, int n, ref float x0, ref float y0, ref float x1, ref float y1)
{
text = text.NullCheck();
x0 = 0;
x1 = 0;
y0 = 0;
y1 = 0;
if(glf?.FTFace != null)
{
byte* nch2;
var charr = Helper.GetStringBPUTF8(text);
fixed (byte* tmp = charr)
{
var ch = tmp;
var x = 0.0f;
var y = 0.0f;
float xx0, xx1, yy0, yy1;
uint curr_utf32, next_utf32;
var nch = Helper.UTF8ToUTF32(ch, &curr_utf32);
curr_utf32 = glf.FTFace.GetCharIndex(curr_utf32);
for (var i = 0; (*ch != 0) && !(n >= 0 && i >= n); i++)
{
fixed (CharInfo* g = &glf.Glyphs[(int) curr_utf32])
{
nch2 = Helper.UTF8ToUTF32(nch, &next_utf32);
next_utf32 = glf.FTFace.GetCharIndex(next_utf32);
ch = nch;
nch = nch2;
var kern = glf.FTFace.GetKerning(curr_utf32, next_utf32, KerningMode.Unscaled);
curr_utf32 = next_utf32;
xx0 = x + g->Left;
xx1 = xx0 + g->Width;
yy0 = y + g->Top;
yy1 = yy0 - g->Height;
Helper.BBoxAdd(xx0, xx1, yy0, yy1, ref x0, ref x1, ref y0, ref y1);
x += (kern.X.ToSingle() + g->AdvanceX) / 64.0f;
y += (kern.Y.ToSingle() + g->AdvanceY) / 64.0f;
}
}
}
}
}
public static float GetAscender(FontTexture glf)
{
if(glf.FontSize == 0 || glf.FTFace == null)
{
return 0.0f;
}
return glf.FTFace.Ascender / 64.0f;
}
public static unsafe float GetStringLen2(FontTexture glf, string text, int n)
{
text = text.NullCheck();
var x = 0.0f;
if (glf?.FTFace != null)
{
var charr = Helper.GetStringBPUTF8(text);
/*fixed (byte* ptr = charr)
{
var ch = ptr;
uint curr_utf32, next_utf32;
var nch = Helper.UTF8ToUTF32(ch, &curr_utf32);
curr_utf32 = glf.FTFace.GetCharIndex(curr_utf32);
for (var i = 0; (*ch != 0) && !(n >= 0 && i >= n); i++)
{
var nch2 = Helper.UTF8ToUTF32(nch, &next_utf32);
next_utf32 = glf.FTFace.GetCharIndex(next_utf32);
ch = nch;
nch = nch2;
var kern = glf.FTFace.GetKerning(curr_utf32, next_utf32, KerningMode.Unscaled);
curr_utf32 = next_utf32;
x += (kern.X.ToSingle() + glf.Glyphs[(int)curr_utf32].AdvanceX) / 64.0f;
}
}*/
var utf32b = System.Text.Encoding.Convert(System.Text.Encoding.UTF8, System.Text.Encoding.UTF32, charr);
var utf32 = new uint[utf32b.Length / 4];
Buffer.BlockCopy(utf32b, 0, utf32, 0, utf32b.Length);
if (utf32.Length == 0) return 0;
uint ci = 0;
uint cilast = 0;
for (var i = 0; i < n && i < utf32.Length; i++)
{
var cur = utf32[i];
if (cur == 0) break;
if(i > 0)
cilast = ci;
ci = glf.FTFace.GetCharIndex(cur);
x += glf.Glyphs[(int) ci].AdvanceX / 64.0f;
if (i > 0)
{
var kern = glf.FTFace.GetKerning(cilast, ci, KerningMode.Unscaled);
x += kern.X.ToSingle() / 64.0f;
}
}
}
return x;
}
public static unsafe float GetStringLen(FontTexture glf, string text, int n)
{
text = text.NullCheck();
var x = 0.0f;
if (glf?.FTFace != null)
{
var charr = Helper.GetStringBPUTF8(text);
fixed (byte* ptr = charr)
{
var ch = ptr;
uint curr_utf32, next_utf32;
var nch = Helper.UTF8ToUTF32(ch, &curr_utf32);
curr_utf32 = glf.FTFace.GetCharIndex(curr_utf32);
for (var i = 0; (*ch != 0) && !(n >= 0 && i >= n); i++)
{
var nch2 = Helper.UTF8ToUTF32(nch, &next_utf32);
next_utf32 = glf.FTFace.GetCharIndex(next_utf32);
ch = nch;
nch = nch2;
var kern = glf.FTFace.GetKerning(curr_utf32, next_utf32, KerningMode.Unscaled);
curr_utf32 = next_utf32;
x += (kern.X.ToSingle() + glf.Glyphs[(int) curr_utf32].AdvanceX) / 64.0f;
}
}
}
return x;
}
public static void Reface(FontTexture glf, string filename, ushort fontSize)
{
Face face;
try
{
face = new Face(glf.FTLibrary, filename, 0);
}
catch
{
return;
}
glf.FTFace = face;
Resize(glf, fontSize);
}
public static void Resize(FontTexture glf, ushort fontSize)
{
if (glf?.FTFace != null)
{
var padding = 2;
int x, y;
int i, ii, i0 = 0;
// clear old atlas, if exists
if (glf.GLTexIndexes.Length > 0)
{
GL.DeleteTextures(glf.GLTexIndexes.Length, glf.GLTexIndexes);
}
glf.GLTexIndexes = new uint[0];
glf.GLRealTexIndexesCount = 0;
// resize base font
glf.FontSize = fontSize;
glf.FTFace.SetCharSize(fontSize, fontSize, 0, 0);
// calculate texture atlas size
var charsInRow = 1 + (int) Math.Sqrt(glf.Glyphs.Length);
glf.GLTexWidth = Math.Min(Helper.NextPowerOf2((fontSize + padding) * charsInRow), glf.GLMaxTexWidth);
// create new atlas
charsInRow = glf.GLTexWidth / (fontSize + padding);
var charsInColumn = glf.Glyphs.Length / charsInRow + 1;
Array.Resize(ref glf.GLTexIndexes, charsInColumn * (fontSize + padding) / glf.GLTexWidth + 1);
GL.GenTextures(glf.GLTexIndexes.Length, glf.GLTexIndexes);
var bufferSize = glf.GLTexWidth * glf.GLTexWidth * sizeof (byte);
var buffer = new byte[bufferSize];
for (i = 0, x = 0, y = 0; i < glf.Glyphs.Length; i++)
{
GlyphSlot g;
glf.Glyphs[i].TexIndex = 0;
// load glyph image into the slot (erase previous one)
try
{
glf.FTFace.LoadGlyph((uint) i, LoadFlags.Render, LoadTarget.Normal);
}
catch
{
continue;
}
// convert to an anti-aliased bitmap
try
{
glf.FTFace.Glyph.RenderGlyph(RenderMode.Normal);
}
catch
{
continue;
}
g = glf.FTFace.Glyph;
glf.Glyphs[i].Width = g.Bitmap.Width;
glf.Glyphs[i].Height = g.Bitmap.Rows;
glf.Glyphs[i].AdvanceX = g.Advance.X.ToSingle() * 64;
glf.Glyphs[i].AdvanceY = g.Advance.Y.ToSingle() * 64;
glf.Glyphs[i].Left = g.BitmapLeft;
glf.Glyphs[i].Top = g.BitmapTop;
if (g.Bitmap.Width == 0 || g.Bitmap.Rows == 0)
{
continue;
}
if (g.Bitmap.Width + x > glf.GLTexWidth)
{
x = 0;
y += glf.FontSize + padding;
if (glf.FontSize + y > glf.GLTexWidth)
{
GL.BindTexture(TextureTarget.Texture2D, glf.GLTexIndexes[glf.GLRealTexIndexesCount]);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int) TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int) TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS,
(int) TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT,
(int) TextureWrapMode.ClampToEdge);
GL.TexImage2D(TextureTarget.Texture2D, 0, (PixelInternalFormat) PixelFormat.Red,
glf.GLTexWidth, glf.GLTexWidth, 0, (PixelFormat) PixelInternalFormat.R8,
PixelType.UnsignedByte, buffer);
for (var ii2 = i0; ii2 < i; ii2++)
{
glf.Glyphs[ii2].TexX0 /= glf.GLTexWidth;
glf.Glyphs[ii2].TexX1 /= glf.GLTexWidth;
glf.Glyphs[ii2].TexY0 /= glf.GLTexWidth;
glf.Glyphs[ii2].TexY1 /= glf.GLTexWidth;
}
buffer = new byte[bufferSize];
y = 0;
i0 = i;
glf.GLRealTexIndexesCount++;
}
}
glf.Glyphs[i].TexX0 = x;
glf.Glyphs[i].TexY0 = y;
glf.Glyphs[i].TexX1 = x + g.Bitmap.Width;
glf.Glyphs[i].TexY1 = y + g.Bitmap.Rows;
glf.Glyphs[i].TexIndex = glf.GLTexIndexes[glf.GLRealTexIndexesCount];
for (var xx = 0; xx < g.Bitmap.Width; xx++)
{
for (var yy = 0; yy < g.Bitmap.Rows; yy++)
{
buffer[(y + yy) * glf.GLTexWidth + x + xx] = g.Bitmap.BufferData[yy * g.Bitmap.Width + xx];
}
}
x += g.Bitmap.Width + padding;
}
GL.BindTexture(TextureTarget.Texture2D, glf.GLTexIndexes[glf.GLRealTexIndexesCount]);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS,
(int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT,
(int)TextureWrapMode.ClampToEdge);
charsInColumn = Helper.NextPowerOf2(y + fontSize + padding);
GL.TexImage2D(TextureTarget.Texture2D, 0, (PixelInternalFormat)PixelFormat.Red,
glf.GLTexWidth, charsInColumn, 0, PixelFormat.Red,
PixelType.UnsignedByte, buffer);
for (ii = i0; ii < glf.Glyphs.Length; ii++)
{
glf.Glyphs[ii].TexX0 /= glf.GLTexWidth;
glf.Glyphs[ii].TexX1 /= glf.GLTexWidth;
glf.Glyphs[ii].TexY0 /= charsInColumn;
glf.Glyphs[ii].TexY1 /= charsInColumn;
}
buffer = new byte[0];
glf.GLRealTexIndexesCount++;
}
}
