<div dir="ltr"><div><div>I use a simple texturing fragment shader and the equation "src*a + dst*(1-a)" for blending. </div>Sorry A8 is probably wrong too, because the text would be black (it's (0,0,0,A), not (1,1,1,A)). I'll write a patch to use swizzling in the fragment shader instead. </div>Marek </div><div class="gmail_extra"> <div class="gmail_quote">On Tue, Apr 2, 2013 at 2:33 AM, Brian Paul <<a href="mailto:brianp@vmware.com" target="_blank">brianp@vmware.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On 04/01/2013 06:18 PM, Marek Olšák wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Have you checked the font is rendered correctly? </blockquote> </div> Yeah, it works fine.<div class="im"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> The font should be transparent and the blend function reads the alpha channel to determine the transparency, so A8 would be a better option. If that isn't an option either, the fragment shader should do .xxxx swizzling. </blockquote> </div> Hmmm, I just tried A8 and it text is missing. I figured you were using a KIL-based fragment shader for the text as in the state tracker's glBitmap code. I'll look closer later... -Brian <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"> On Tue, Apr 2, 2013 at 12:46 AM, Brian Paul <<a href="mailto:brian.e.paul@gmail.com" target="_blank">brian.e.paul@gmail.com</a> </div> <mailto:<a href="mailto:brian.e.paul@gmail.com" target="_blank">brian.e.paul@gmail.com</a>>> wrote: From: Brian Paul <<a href="mailto:brianp@vmware.com" target="_blank">brianp@vmware.com</a> <mailto:<a href="mailto:brianp@vmware.com" target="_blank">brianp@vmware.com</a>>><div><div class="h5"> --- src/gallium/auxiliary/hud/font.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/src/gallium/auxiliary/hud/font.c b/src/gallium/auxiliary/hud/font.c index 5c4a4d0..6747874 100644 --- a/src/gallium/auxiliary/hud/font.c +++ b/src/gallium/auxiliary/hud/font.c @@ -377,17 +377,26 @@ util_font_create_fixed_8x13(struct pipe_context *pipe, struct pipe_resource tex_templ, *tex; struct pipe_transfer *transfer = NULL; char *map; + enum pipe_format tex_format; int i; - if (!screen->is_format_supported(screen, PIPE_FORMAT_I8_UNORM, - PIPE_TEXTURE_RECT, 0, - PIPE_BIND_SAMPLER_VIEW)) { + if (screen->is_format_supported(screen, PIPE_FORMAT_I8_UNORM, + PIPE_TEXTURE_RECT, 0, + PIPE_BIND_SAMPLER_VIEW)) { + tex_format = PIPE_FORMAT_I8_UNORM; + } + else if (screen->is_format_supported(screen, PIPE_FORMAT_L8_UNORM, + PIPE_TEXTURE_RECT, 0, + PIPE_BIND_SAMPLER_VIEW)) { + tex_format = PIPE_FORMAT_L8_UNORM; + } + else { return FALSE; } memset(&tex_templ, 0, sizeof(tex_templ)); tex_templ.target = PIPE_TEXTURE_RECT; - tex_templ.format = PIPE_FORMAT_I8_UNORM; + tex_templ.format = tex_format; tex_templ.width0 = 128; tex_templ.height0 = 256; tex_templ.depth0 = 1; -- 1.7.9.5 _______________________________________________ mesa-dev mailing list </div></div> <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> <mailto:<a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a>> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-dev</a><div class="im"> _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </div></blockquote> </blockquote></div> </div>