1 files changed, 82 insertions, 0 deletions
diff --git a/extern/bFTGL/src/FTTextureGlyph.cpp b/extern/bFTGL/src/FTTextureGlyph.cpp
new file mode 100755
index 00000000000..4b29268f1ce
--- /dev/null
+++ b/extern/bFTGL/src/FTTextureGlyph.cpp
@@ -0,0 +1,82 @@
+#include    "FTTextureGlyph.h"
+
+
+FTTextureGlyph::FTTextureGlyph( FT_GlyphSlot glyph, int id, int xOffset, int yOffset, GLsizei width, GLsizei height)
+:   FTGlyph( glyph),
+    destWidth(0),
+    destHeight(0),
+    glTextureID(id),
+    activeTextureID(0)
+{
+    err = FT_Render_Glyph( glyph, FT_RENDER_MODE_NORMAL);
+    if( err || glyph->format != ft_glyph_format_bitmap)
+    {
+        return;
+    }
+
+    FT_Bitmap      bitmap = glyph->bitmap;
+
+    destWidth  = bitmap.width;
+    destHeight = bitmap.rows;
+    
+    if( destWidth && destHeight)
+    {
+        glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT);
+        glPixelStorei( GL_UNPACK_LSB_FIRST, GL_FALSE);
+        glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
+        glPixelStorei( GL_UNPACK_ALIGNMENT, 1);
+
+        glBindTexture( GL_TEXTURE_2D, glTextureID);
+        glTexSubImage2D( GL_TEXTURE_2D, 0, xOffset, yOffset, destWidth, destHeight, GL_ALPHA, GL_UNSIGNED_BYTE, bitmap.buffer);
+
+        glPopClientAttrib();
+    }
+
+
+//      0    
+//      +----+
+//      |    |
+//      |    |
+//      |    |
+//      +----+
+//           1
+    
+    uv[0].x = static_cast<float>(xOffset) / static_cast<float>(width);
+    uv[0].y = static_cast<float>(yOffset) / static_cast<float>(height);
+    uv[1].x = static_cast<float>( xOffset + destWidth) / static_cast<float>(width);
+    uv[1].y = static_cast<float>( yOffset + destHeight) / static_cast<float>(height);
+    
+    pos.x = glyph->bitmap_left;
+    pos.y = glyph->bitmap_top;
+}
+
+
+FTTextureGlyph::~FTTextureGlyph()
+{}
+
+
+float FTTextureGlyph::Render( const FTPoint& pen)
+{
+    glGetIntegerv( GL_TEXTURE_2D_BINDING_EXT, &activeTextureID);
+    if( activeTextureID != glTextureID)
+    {
+        glBindTexture( GL_TEXTURE_2D, (GLuint)glTextureID);
+    }
+    
+    glBegin( GL_QUADS);
+        glTexCoord2f( uv[0].x, uv[0].y);
+        glVertex2f( pen.x + pos.x,             pen.y + pos.y);
+
+        glTexCoord2f( uv[0].x, uv[1].y);
+        glVertex2f( pen.x + pos.x,             pen.y + pos.y - destHeight);
+
+        glTexCoord2f( uv[1].x, uv[1].y);
+        glVertex2f( pen.x + destWidth + pos.x, pen.y + pos.y - destHeight);
+        
+        glTexCoord2f( uv[1].x, uv[0].y);
+        glVertex2f( pen.x + destWidth + pos.x, pen.y + pos.y);
+    glEnd();
+
+    return advance;
+}
+