progs/trivial: use -c option to use glCopyPixels()
Otherwise we use glRead/DrawPixels to copy the off-screen FBO image
into the window.
Looks like NVIDIA's broken when using -c (the image is upside down),
but OK with -c -t.
progs/trivial: make clear-fbo-scissor.c work with other GL drivers
NVIDIA's driver requires that the texture that we're going to render into
be complete. Need to set min/mag filters to non-mipmap modes.
Plus added other error/debug checks.
This is a substantial reorganization, This particular commit enables:
- building the progs for unices platforms
- glew is now built as a shared library (it is the default, and it is
inconvenient and pointless to shift away from that default)
- all progs get built by default
mesa/vbo: fix compile and replay of nodes ending in a FALLBACK
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.
State-change functions which precede the first call to glEnd() in
a compiled list are vulnerable to not being executed when that list
is called.
In particular this can happen if a list is invoked from within a
begin/end pair, as in this example.
When one display list calls another display list, it is possible
that the calling display list makes state-changes or other actions which
invalidate any attempt at caching or state-change elimination in the
calling list.
This test exercises one such case, where the called list consists of just
a single glShadeModel() call.
mesa/vbo: fix compile and replay of nodes ending in a FALLBACK
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.
Brian Paul