Adding in new .cpp versions of FT font code.

src/osgText/FTPixmapGlyph.cpp

@@ -0,0 +1,94 @@
+#include	"GL/gl.h"
+
+#include	"FTPixmapGlyph.h"
+#include	"FTGL.h"
+
+
+FTPixmapGlyph::FTPixmapGlyph( FT_Glyph glyph)
+:	FTGlyph(),
+	destWidth(0),
+	destHeight(0),
+	numGreys(0),
+	data(0)
+{
+	// This function will always fail if the glyph's format isn't scalable????
+	FT_Error err = FT_Glyph_To_Bitmap( &glyph, ft_render_mode_normal, 0, 1);
+	if( err || ft_glyph_format_bitmap != glyph->format)
+	{
+		return;
+	}
+
+	FT_BitmapGlyph  bitmap = (FT_BitmapGlyph)glyph;
+	FT_Bitmap*      source = &bitmap->bitmap;
+
+	//check the pixel mode
+	//ft_pixel_mode_grays
+	    
+	int srcWidth = source->width;
+	int srcHeight = source->rows;
+	int srcPitch = source->pitch;
+    
+	numGreys = source->num_grays;
+	advance = glyph->advance.x >> 16;
+
+ 	pos.x = bitmap->left;
+	pos.y = srcHeight - bitmap->top;
+	
+   // FIXME What about dest alignment?
+    destWidth = srcWidth;
+    destHeight = srcHeight;
+    
+    data = new unsigned char[destWidth * destHeight * 4];
+    
+    // Get the current glColor.
+    float ftglColour[4];
+    glGetFloatv( GL_CURRENT_COLOR, ftglColour);
+    
+    for(int y = 0; y < srcHeight; ++y)
+    {
+    	--destHeight;
+    	for(int x = 0; x < srcWidth; ++x)
+    	{
+			*( data + ( destHeight * destWidth  + x) * 4 + 0) = static_cast<unsigned char>( ftglColour[0] * 255.0f);
+			*( data + ( destHeight * destWidth  + x) * 4 + 1) = static_cast<unsigned char>( ftglColour[1] * 255.0f);
+			*( data + ( destHeight * destWidth  + x) * 4 + 2) = static_cast<unsigned char>( ftglColour[2] * 255.0f);
+			*( data + ( destHeight * destWidth  + x) * 4 + 3) = static_cast<unsigned char>( ftglColour[3] * (*( source->buffer + ( y * srcPitch) + x)));
+    	}    	
+    }
+
+    destHeight = srcHeight;
+
+	// discard glyph image (bitmap or not)
+	// Is this the right place to do this?
+	FT_Done_Glyph( glyph );
+}
+
+
+FTPixmapGlyph::~FTPixmapGlyph()
+{
+	delete[] data;
+}
+
+
+float FTPixmapGlyph::Render( const FT_Vector& pen)
+{
+	if( data != 0 )
+	{
+		glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT);
+		
+		// Move the glyph origin
+		glBitmap( 0, 0, 0.0, 0.0, pen.x + pos.x, pen.y - pos.y, (const GLubyte *)0);
+
+		glPixelStorei( GL_UNPACK_ROW_LENGTH, destWidth);
+
+		glDrawPixels( destWidth, destHeight, GL_RGBA, GL_UNSIGNED_BYTE, (const GLvoid*)data);
+
+
+		// Restore the glyph origin
+		glBitmap( 0, 0, 0.0, 0.0, -pen.x - pos.x, -pen.y + pos.y, (const GLubyte *)0);
+
+		glPopClientAttrib();
+	}
+
+	return advance;
+}