Bug 8602

Summary: renderutil needs xcb_renderutil_composite_string/glyph_8/16/32 functions
Product: XCB Reporter: Ian Osgood <iano>
Component: UtilsAssignee: Jamey Sharp <jamey>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: high    
Version: unspecified   
Hardware: All   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Ian Osgood 2006-10-11 08:01:18 UTC 
The core xcb_render_composite_glyph_8/16/32 requests are too primitive, taking only a byte array whose 
length is difficult to determine.  We should add xcb_renderutil_composite_string/glyph_8/16/32 functions 
to the renderutil libary to make this more convenient.  These will be direct ports or the libXrender 
XRenderComposite* series of functions found in libXrender/src/Glyph.c.
Comment 1 Ian Osgood 2006-10-14 16:30:16 UTC 
I've added a prototype API to util/renderutil, to be used as follows:

  const uint8_t glyphs[] = (const uint8_t *)"Hello, world!";
  size_t len = strlen("Hello, world!");
  xcb_render_util_composite_text_stream_t *s;
  s = xcb_render_util_composite_text_stream( glyphset, len, 0);
  xcb_render_util_glyphs_8( s, dx, dy, len, glyphs);
  xcb_render_util_composite_text( c, op, src, dst, mask_format, src_x, src_y, s);
  xcb_render_util_composite_text_free( s);

Please review. Next step is testing, by either:
1) using it in demo/rendercheck (requiring font support and a glyph cache to be added)
2) implementing the font rendering backend to cairo
Comment 2 Ian Osgood 2006-11-14 08:57:40 UTC 
Seems to work well enough. Cairo and Xft have been modified to use the new interface successfully.

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