Fix xdemos which default to using display :0.0 to default to $DISPLAY,
this is kind of irritating when testing on a display other than :0.0
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Where vbo save nodes are terminated with a call to DO_FALLBACK(), as in
the case of a recursive CallList which is itself within a Begin/End pair,
there two problems:
1) The display list node's primitive information was incorrect, stating
the cut-off prim had zero vertices
2) On replay, we would get confused by a primitive that started in a
node, but was terminated by individual opcodes.
This change fixes the first problem by correctly terminating the last
primitive on fallback, and the second by forcing the display list to
use the Loopback path, converting all nodes into immediate-mode rendering.
The loopback fix is a performance hit, but avoiding this would require
a fairly large rework of this code.
The reshape() function was called when there was no GLX context so
the viewport/modelview/projection setup wasn't doing anything. Move
the call to reshape() into draw().
Also, remove -stereo, -fullscreen options and do some general clean-up.
wglShareLists is a little picky -- it seems to check if it has exclusive
access to a lock, and fails if it doesn't.
This allows the texture to be shared with all windows.
When the -arb option is specified we use GL_ARB_framebuffer_object intead
of GL_EXT_framebuffer_object.
For some vendors' OpenGL it's important to call the ARB entrypoints
instead of the EXT entrypoints to get correct behaviour. Use some
function pointer tricks to do this (instead of GLEW).
If the multitex.vert shader uses the VertCoord generic vertex attribute
instead of the pre-defined gl_Vertex attribute, we need to make sure that
VertCoord gets bound to generic vertex attribute zero.
That's because we need to call glVertexAttrib2fv(0, xy) after all the other
vertex attributes have been set since setting generic attribute 0 triggers
vertex submission. Before, we wound up issuing the vertex attributes in
the order 0, 1, 2 which caused the first vertex to be submitted before all
the attributes were set. Now, the attributes are set in 1, 2, 0 order.
