If in hw/xgl/glxext/xglglxext.c, in the function xglDrawArrays I make
the following change (denoted by MISHA HACK in the comments) it no
longer crashes although there are some redrawing problems:
static void
xglDrawArrays (GLenum mode,
GLint first,
GLsizei count)
{
GLenum listMode;
if (cctx->list)
{
glEndList ();
xglStartList (XGL_LIST_OP_DRAW, GL_COMPILE);
glDrawArrays (mode, first, count);
glEndList ();
listMode = cctx->listMode;
}
else
listMode = GL_COMPILE_AND_EXECUTE;
if (listMode == GL_COMPILE_AND_EXECUTE)
{
RegionRec region;
BoxRec scissor, box;
BoxPtr pBox;
int nBox;
XGL_GLX_DRAW_PROLOGUE (pBox, nBox, &scissor);
while (nBox--)
{
XGL_GLX_DRAW_BOX (&box, pBox);
pBox++;
if (!cctx->framebuffer && cctx->attrib.scissorTest)
XGL_GLX_INTERSECT_BOX (&box, &scissor);
if (box.x1 < box.x2 && box.y1 < box.y2)
{
XGL_GLX_SET_SCISSOR_BOX (&box);
/* !!! MISHA HACK START !!! */
if (count < 1000)
glDrawArrays (mode, first, count);
/* !!! MISHA HACK END !!! */
XGL_GLX_DRAW_DAMAGE (&box, ®ion);
}
}
}
if (cctx->list)
xglStartList (XGL_LIST_OP_CALLS, cctx->listMode);
}
I am in communication with David Reverman about the bug and hopefully he will
suggest something a little cleaner (basically it seems
like there is aproblem with calls to glDrawArrays with a large count
in this function, but as I have no OpenGL experience I am not clear on what
array is actually being used for this function, and thus cannot currently
proceed further).
Misha
--
Open office crashes and takes Xgl with it
https://launchpad.net/bugs/63830
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