st/egl: Fix a crash when unbinding current context.
This fixes a NULL-pointer dereference when
eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)
is called.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Since sqrt() is basically implemented in terms of RSQ/RCP we'll do a
divide by zero if x=0 and wind up with unpredictable results.
Now use CMP instruction to test for x<=0 and return zero in that case.
The combination of fptosi
and sitofp (necessary for trunc/floor/ceil/round implementation)
somehow becomes invalid code.
Skip the instruction combining pass when SSE4.1 is not available.
Nasty bug when the surface is freed and another is allocated right on
top of it. The next time we set the fb state SP thinks it's the same
surface and doesn't flush, and when the flush eventually happens the
surface belongs to a completely different texture.
(cherry picked from commit a77226071f)
Conflicts:
src/gallium/drivers/softpipe/sp_context.c
Call _eglConfigFromContextModesRec to convert __GLcontextModes to
_EGLConfig. Single-buffered configs are no longer skipped.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
egl: Add a function to convert __GLcontextModes to _EGLConfig.
_eglConfigFromContextModesRec is used to convert a __GLcontextModes to a
_EGLConfig. Note that the config is not validated. An invalid mode
is likely to give an invalid config.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Make it similiar to how contexts and surfaces are looked up. It should
be slightly faster, and work better with multiple displays.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
This mainly implements the algorithms for configuration selection and
sorting, described in the spec. User errors should also be correctly
detected and reported.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Config keys are almost config attributes. A valid config attribute is a
valid config key, but a valid config key may not be a valid config
attribute.
This commit does not distinguish the differences.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
llvmpipe: Emit SSE intrinsics based on runtime cpu capability check.
Note that llvmpipe still doesn't run on any processor yet: if you don't
have a recent processor with SSE4.1 you will still likely end up
hitting a code path for which a generic non-sse4 version is not
implemented yet.
util: Cleanup u_cpu_detect, build. Support X86_64 and detect SSE4.1 too.
I was waiting for the need to use this code to arise, and it finally came.
I've tested building this on Linux and Windows, both x86 and x64_64. But
it might break other platforms. Please bear with me and help me fix it.
Many thanks to Dennis Smit who submitted this, and Eric Anholt whose
work this was based on.
Chia-I Wu