<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - glDispatchComputeGroupSizeARB : gl_GlobalInvocationID.x != gl_WorkGroupID.x * gl_LocalGroupSizeARB.x + gl_LocalInvocationID.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=103393#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - glDispatchComputeGroupSizeARB : gl_GlobalInvocationID.x != gl_WorkGroupID.x * gl_LocalGroupSizeARB.x + gl_LocalInvocationID.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=103393">bug 103393</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>OK yeah, this is totally broken... for a simplified shader (which I will submit to piglit), this is generating code like COMP PROPERTY CS_FIXED_BLOCK_WIDTH 0 PROPERTY CS_FIXED_BLOCK_HEIGHT 0 PROPERTY CS_FIXED_BLOCK_DEPTH 0 DCL SV[0], THREAD_ID DCL SV[1], BLOCK_ID DCL SV[2], BLOCK_SIZE DCL BUFFER[16] DCL TEMP[0..3], LOCAL IMM[0] UINT32 {8, 0, 0, 0} 0: UMAD TEMP[0].x, SV[1].xyzz, TEMP[1].xyzz, SV[0].xyzz 1: MOV TEMP[1].x, TEMP[0].xxxx 2: MOV TEMP[1].y, SV[0].xxxx 3: UMAD TEMP[2].x, SV[1].xxxx, SV[2].xxxx, SV[0].xxxx 4: UMUL TEMP[3].x, TEMP[2].xxxx, IMM[0].xxxx 5: STORE BUFFER[16].xy, TEMP[3].xxxx, TEMP[1].xyyy 6: END Note the first op which tries to read the uninitialized TEMP[1].xyzz. Oops. Pretty sure this used to work, so probably got broken at some point with the various refactors.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>