<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Implement SSBOs in GLSL front-end and i965" href="https://bugs.freedesktop.org/show_bug.cgi?id=89597#c44">Comment # 44</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Implement SSBOs in GLSL front-end and i965" href="https://bugs.freedesktop.org/show_bug.cgi?id=89597">bug 89597</a> from <a class="email" href="mailto:itoral@igalia.com" title="Iago Toral <itoral@igalia.com>"> Iago Toral</a> <pre>(In reply to Iago Toral from <a href="show_bug.cgi?id=89597#c43">comment #43</a>) > Francisco, since you have already landed the untyped write messages in > master I have started to rewrite my code to use them but it seems as if > these messages don't write anything for me. Looking at the generated > assembly it seems that everything is fine though. For example: > > mov(8) g2<1>UD 0x00000000UD { align1 WE_all 1Q compacted }; > mov(16) g3<1>UD 0x00000000UD { align1 WE_all 1H compacted }; > mov(16) g5<1>UD 0x0000000aUD { align1 WE_all 1H compacted }; > mov(1) g2.7<1>UD g1.7<0,1,0>UD { align1 WE_all }; > send(8) null g2<8,8,1>UD > data ( DC untyped surface write, 1, 46) mlen 5 rlen 0 { align1 1Q }; > > that is supposed to write the value 10 (0xa) to offset 0 of surface index 1, > which comes from a single assignment of that value to a integer variable at > the beginning of the buffer. > > The assembly looks correct to me: > - g2 is the header and carries the pixel mask as delivered to the thread > - g3/g4 have the offset payload for SIMD16 (0 for all channels) > - g5/g6 have the data payload for SIMD16 (0xa for all channels) > - The message length is 5 for SIMD16 (header, offsetx2, datax2) > - surface index is 1, which is correct > - msg_control is 46, meaning only red channel enabled and SIMD16 mode. > > but it does not seem to take any effect: the buffer contents are not > modified at any offset after this. > > The surface I am writing to is a BRW_SURFACE_BUFFER with format > BRW_SURFACEFORMAT_RAW and a pitch of 1. > > Am I missing something obvious here? I was, seems like I removed the marking of the surface as used by mistake. I have put that back and it works fine now. Sorry for the noise... :-/</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>