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Added TGSI_FILE_OUTPUT case in fetch_src_file_channel().

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GLSL output variables (such as vertex varyings) can be read (they're not
write-only).
This commit is contained in:
Brian 2007-10-02 14:17:47 -06:00
parent 4ad80ad5cf
commit 6aab3e3d26
1 changed files with 8 additions and 0 deletions
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8
src/mesa/pipe/tgsi/exec/tgsi_exec.c
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@ -855,6 +855,14 @@ fetch_src_file_channel(
chan->u[3] = mach->Addrs[index->i[3]].xyzw[swizzle].u[3];
break;
case TGSI_FILE_OUTPUT:
/* vertex varying/output vars can be read too */
chan->u[0] = mach->Outputs[index->i[0]].xyzw[swizzle].u[0];
chan->u[1] = mach->Outputs[index->i[1]].xyzw[swizzle].u[1];
chan->u[2] = mach->Outputs[index->i[2]].xyzw[swizzle].u[2];
chan->u[3] = mach->Outputs[index->i[3]].xyzw[swizzle].u[3];
break;
default:
assert( 0 );
}