Move window 'out' to the left.
NO sigfault with MESA_NO_SSE and MESA_NO_MMX.
With MMX:
#0 0x406a92b5 in _generic_read_RGBA_span_BGRA8888_REV_MMX ()
from /usr/X11R6/lib/modules/dri/r200_dri.so
(gdb) list
262
263 TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 *
sizeof(GLubyte));
264 assert(TempImage);
265 }
266
267
268 int
269 main( int argc, char *argv[] )
270 {
271 GLboolean ciMode = GL_FALSE;
(gdb) bt
#0 0x406a92b5 in _generic_read_RGBA_span_BGRA8888_REV_MMX ()
from /usr/X11R6/lib/modules/dri/r200_dri.so
#1 0x405655af in r200ReadRGBASpan_ARGB8888_MMX (ctx=0x7fffb862, n=194, x=5,
y=229, rgba=0x45024008) at spantmp2.h:415
#2 0x40602944 in read_fast_rgba_pixels (ctx=0x8060928, x=5, y=20,
width=2147465314, height=188, format=6408, type=5121, pixels=0x7fffb862,
packing=0x45048000) at swrast/s_readpix.c:288
#3 0x406029f5 in read_rgba_pixels (ctx=0x8060928, x=5, y=20, width=194,
height=188, format=6408, type=5121, pixels=0x45024008, packing=0xbfffeb30)
at swrast/s_readpix.c:324
#4 0x40603237 in _swrast_ReadPixels (ctx=0x8060928, x=5, y=20, width=194,
height=188, format=6408, type=5121, packing=0xbfffeb30, pixels=0x45024008)
at swrast/s_readpix.c:556
#5 0x405552e5 in r200ReadPixels (ctx=0x8060928, x=5, y=20, width=194,
height=188, format=6408, type=5121, pack=0x8073c24, pixels=0x45024008)
at r200_pixel.c:281
#6 0x4064bd44 in _mesa_ReadPixels (x=2147465314, y=2147465314, width=194,
height=188, format=2147465314, type=2147465314, pixels=0x7fffb862)
at main/drawpix.c:171
#7 0x0804942f in Display () at readpix.c:141
#8 0x40045f8e in processWindowWorkList () from /usr/lib/libglut.so.3
#9 0x4004601a in __glutProcessWindowWorkLists () from /usr/lib/libglut.so.3
#10 0x4004608b in glutMainLoop () from /usr/lib/libglut.so.3
#11 0x080499e7 in main (argc=1, argv=0xbfffedf4) at readpix.c:287
(gdb) info registers
eax 0x7fffb862 2147465314
ecx 0x45048000 1157922816
edx 0xfffffe12 -494
ebx 0x4091c140 1083294016
esp 0xbffe69e8 0xbffe69e8
ebp 0xbffe6a28 0xbffe6a28
esi 0x2ee 750
edi 0x0 0
eip 0x406a92b5 0x406a92b5
eflags 0x10212 66066
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
With SSE:
#0 0x406a931d in _generic_read_RGBA_span_BGRA8888_REV_SSE ()
from /usr/X11R6/lib/modules/dri/r200_dri.so
(gdb) list
262
263 TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 *
sizeof(GLubyte));
264 assert(TempImage);
265 }
266
267
268 int
269 main( int argc, char *argv[] )
270 {
271 GLboolean ciMode = GL_FALSE;
(gdb) bt
#0 0x406a931d in _generic_read_RGBA_span_BGRA8888_REV_SSE ()
from /usr/X11R6/lib/modules/dri/r200_dri.so
#1 0xff131f11 in ?? ()
(gdb) info registers
eax 0xff4d4d4d -11711155
ecx 0x4504826c 1157923436
edx 0x0 0
ebx 0x407f7404 1082094596
esp 0xbffe69e0 0xbffe69e0
ebp 0xbffe69f0 0xbffe69f0
esi 0xfffffddf -545
edi 0x0 0
eip 0x406a931d 0x406a931d
eflags 0x10203 66051
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
-Dieter
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