[OE-core] [PATCH 1/2] mesa: make gallium swrast target optional

[Marco Felsch]

Most of the time we are compiling for embedded targets which have
dedicated hardware combinations. Enabling swrast by default isn't a good
solution for such devices because if the hardware render node has an
issue or doesn't support a special format/request Mesa will fallback to
the software renderer. This will make it harder to debug performance
issues.

A better way is to let the user decide if a software renderer is
needed e.g. if the system has no hardware renderer or to have such a
fallback device. This way the user knows that the software renderer is
enabled.

Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
---
v3
- rebased on current master-next branch

 meta/recipes-graphics/mesa/mesa.inc | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/meta/recipes-graphics/mesa/mesa.inc b/meta/recipes-graphics/mesa/mesa.inc
index 3ecfb8506c..a6d36cf21c 100644
--- a/meta/recipes-graphics/mesa/mesa.inc
+++ b/meta/recipes-graphics/mesa/mesa.inc
@@ -90,23 +90,27 @@ PACKAGECONFIG[egl] = "-Degl=true, -Degl=false"
 
 PACKAGECONFIG[etnaviv] = ""
 PACKAGECONFIG[kmsro] = ""
+PACKAGECONFIG[swrast] = ""
 
-GALLIUMDRIVERS = "swrast"
-GALLIUMDRIVERS_append ="${@bb.utils.contains('PACKAGECONFIG', 'etnaviv', ',etnaviv', '', d)}"
-GALLIUMDRIVERS_append ="${@bb.utils.contains('PACKAGECONFIG', 'kmsro', ',kmsro', '', d)}"
+GALLIUMDRIVERS = ""
+GALLIUMDRIVERS +="${@bb.utils.contains('PACKAGECONFIG', 'swrast', 'swrast', '', d)}"
+GALLIUMDRIVERS +="${@bb.utils.contains('PACKAGECONFIG', 'etnaviv', 'etnaviv', '', d)}"
+GALLIUMDRIVERS +="${@bb.utils.contains('PACKAGECONFIG', 'kmsro', 'kmsro', '', d)}"
 
 # radeonsi requires LLVM
-GALLIUMDRIVERS_LLVM33 = "${@bb.utils.contains('PACKAGECONFIG', 'r600', ',radeonsi', '', d)}"
+GALLIUMDRIVERS_LLVM33 = "${@bb.utils.contains('PACKAGECONFIG', 'r600', 'radeonsi', '', d)}"
 GALLIUMDRIVERS_LLVM33_ENABLED = "${@oe.utils.version_less_or_equal('MESA_LLVM_RELEASE', '3.2', False, len('${GALLIUMDRIVERS_LLVM33}') > 0, d)}"
-GALLIUMDRIVERS_LLVM = "r300,svga,nouveau${@',${GALLIUMDRIVERS_LLVM33}' if ${GALLIUMDRIVERS_LLVM33_ENABLED} else ''}"
+GALLIUMDRIVERS_LLVM = "r300 svga nouveau ${@'${GALLIUMDRIVERS_LLVM33}' if ${GALLIUMDRIVERS_LLVM33_ENABLED} else ''}"
 
 PACKAGECONFIG[r600] = ""
 
-GALLIUMDRIVERS_append = "${@bb.utils.contains('PACKAGECONFIG', 'gallium-llvm', ',${GALLIUMDRIVERS_LLVM}', '', d)}"
-GALLIUMDRIVERS_append = "${@bb.utils.contains('PACKAGECONFIG', 'r600', ',r600', '', d)}"
-GALLIUMDRIVERS_append = ",virgl"
+GALLIUMDRIVERS += "${@bb.utils.contains('PACKAGECONFIG', 'gallium-llvm', '${GALLIUMDRIVERS_LLVM}', '', d)}"
+GALLIUMDRIVERS += "${@bb.utils.contains('PACKAGECONFIG', 'r600', 'r600', '', d)}"
+GALLIUMDRIVERS += "virgl"
+GALLIUMDRIVERS_MESON = "${@",".join("${GALLIUMDRIVERS}".split())}"
+
+PACKAGECONFIG[gallium] = "-Dgallium-drivers=${GALLIUMDRIVERS_MESON}, -Dgallium-drivers=''"
 
-PACKAGECONFIG[gallium] = "-Dgallium-drivers=${GALLIUMDRIVERS}, -Dgallium-drivers=''"
 MESA_LLVM_RELEASE ?= "8.0.0"
 PACKAGECONFIG[gallium-llvm] = "-Dllvm=true -Dshared-llvm=true, -Dllvm=false, llvm${MESA_LLVM_RELEASE} llvm-native \
                                ${@'elfutils' if ${GALLIUMDRIVERS_LLVM33_ENABLED} else ''}"
-- 
2.20.1