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Add note about using RENDER extension in the future for proper alpha

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rendering.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1732 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet
2001-11-26 18:56:26 +00:00
parent eba128dcc0
commit 85f98758ee
1 changed files with 9 additions and 3 deletions
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src/Fl_Image.cxx
+9 -3
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@@ -1,5 +1,5 @@
//
// "$Id: Fl_Image.cxx,v 1.5.2.3.2.9 2001/11/25 16:38:11 easysw Exp $"
// "$Id: Fl_Image.cxx,v 1.5.2.3.2.10 2001/11/26 18:56:26 easysw Exp $"
//
// Image drawing code for the Fast Light Tool Kit (FLTK).
//
@@ -298,7 +298,13 @@ void Fl_RGB_Image::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
};
// Right now do a "screen door" alpha mask; not always pretty, but
// definitely fast...
// definitely fast... In the future we should look at supporting
// the RENDER extension in XFree86, when available, to provide
// true RGBA-blended rendering. See:
//
// http://www.xfree86.org/~keithp/render/protocol.html
//
// for more info...
memset(bitmap, 0, bmw * h());
for (dataptr = array + d() - 1, y = 0; y < h(); y ++, dataptr += ld())
@@ -358,5 +364,5 @@ void Fl_RGB_Image::label(Fl_Menu_Item* m) {
//
// End of "$Id: Fl_Image.cxx,v 1.5.2.3.2.9 2001/11/25 16:38:11 easysw Exp $".
// End of "$Id: Fl_Image.cxx,v 1.5.2.3.2.10 2001/11/26 18:56:26 easysw Exp $".
//