gallium/noop: no operation gallium driver

This driver is a fake swdri driver that perform no operations
beside allocation gallium structure and buffer for upper layer
usage.

It's purpose is to help profiling core mesa/gallium without
having pipe driver overhead hidding hot spot of core code.

scons file are likely inadequate i am unfamiliar with this
build system.

To use it simply rename is to swrast_dri.so and properly set
LIBGL_DRIVERS_PATH env variable.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gallium/drivers/noop/SConscript b/src/gallium/drivers/noop/SConscript
new file mode 100644
index 0000000000..a4d0dcaf27
--- /dev/null
+++ b/src/gallium/drivers/noop/SConscript
@@ -0,0 +1,15 @@
+#######################################################################
+# SConscript for noop convenience library
+
+Import('*')
+
+env = env.Clone()
+
+noop = env.ConvenienceLibrary(
+	target = 'noop',
+	source = [
+		'noop_pipe.c',
+		'noop_state.c'
+		]
+    ) + extra
+Export('noop')