[Mesa-dev] r600g: status of my work on the shader optimization

[Sebastien Caty]

On March 1, 2013 06:24:01 PM Matt Turner wrote:
> On Fri, Mar 1, 2013 at 5:15 PM, Sebastien Caty <scaty at dcinformatique.com> 
wrote:
> > Trying to dig more and found out which shader is causing trouble but I
> > haven't found out how to run a specific test with piglit. Documentation
> > isn't to friendly...Id appreciate some help with this.
> 
> If you click the test {pass,fail,crash} in the generated html summary
> it will contain the command used to run the test.

Doh! Thanks that will do. All the piglit regression I had found so far pass 
when I run them alone, one by one.

Went back to Serious Sam 3 to isolate a shader that's causing problems. Found 
one, shader 35. I get several errors like this :

error at : DOT4     __,    t113 at R14.x, t114F at R125.x
  : expected operand value t113 at R14.x, gpr contains R11.x.3||FP at R14.x
error at : DOT4     __,    t85 at R14.x, t86F at R124.x
  : expected operand value t85 at R14.x, gpr contains R11.x.3||FP at R14.x
error at : DOT4     __,    t87 at R13.y, t88F at R124.y
  : expected operand value t87 at R13.y, gpr contains R12.x.5||FP at R13.y

bytecode 8 dw -- 2 gprs -- 0 stack entries -------
shader 35 -- 7
0000 00000002 81000000  VTX 1 @4 
 0004 7C00A000 88CD1001 00080000   VFETCH         R1.xyzw, R0.x,  RID:160 
VERTEX MFC:31 UCF:0 FMT(DTA:35 NUM:0 COMP:0 MODE:1)
0002 00000000 8A000000  RET @0 
--------------------------------------
______________________________________________________________
--------------------------------------------------------------
FRAG
PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1
DCL IN[0], GENERIC[12], PERSPECTIVE
DCL IN[1], GENERIC[13], PERSPECTIVE
DCL OUT[0], COLOR
DCL SAMP[0]
DCL CONST[1]
DCL TEMP[0], LOCAL
DCL TEMP[1], LOCAL
DCL TEMP[2], LOCAL
IMM[0] FLT32 {    0.2500,     0.0000,     0.0000,     0.0000}
  0: MIN TEMP[0], IN[1], CONST[1].zwzw
  1: MAX TEMP[0], TEMP[0], CONST[1].xyxy
  2: TEX TEMP[1], TEMP[0].xyyy, SAMP[0], 2D
  3: MUL TEMP[1], TEMP[1], IMM[0].xxxx
  4: TEX TEMP[0], TEMP[0].zwww, SAMP[0], 2D
  5: MAD TEMP[1], TEMP[0], IMM[0].xxxx, TEMP[1]
  6: MIN TEMP[0], IN[0], CONST[1].zwzw
  7: MAX TEMP[0], TEMP[0], CONST[1].xyxy
  8: TEX TEMP[2], TEMP[0].xyyy, SAMP[0], 2D
  9: MAD TEMP[1], TEMP[2], IMM[0].xxxx, TEMP[1]
 10: TEX TEMP[0], TEMP[0].zwww, SAMP[0], 2D
 11: MAD TEMP[0], TEMP[0], IMM[0].xxxx, TEMP[1]
 12: MOV OUT[0], TEMP[0]
 13: END


The full dump data is here : http://pastebin.com/B4VtnwYK

Hope it can help you a little.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/mesa-dev/attachments/20130302/879b7630/attachment-0001.html>