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video_core: host_shaders: Don't pass --quiet to glslangValidator if unavailable 

Prevents CMake from calling `glslangValidator` with `--quiet` when it is
not available, i.e. on older downstream versions from Ubuntu.
This commit is contained in:
lat9nq 2021-02-01 19:36:10 -05:00
parent 5e49b81d4d
commit fc43eac82a
1 changed files with 19 additions and 1 deletions
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20
src/video_core/host_shaders/CMakeLists.txt
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@ -20,6 +20,7 @@ set(SHADER_FILES
find_program(GLSLANGVALIDATOR "glslangValidator" REQUIRED)
set(GLSL_FLAGS "")
set(QUIET_FLAG "--quiet")
set(SHADER_INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/include)
set(SHADER_DIR ${SHADER_INCLUDE}/video_core/host_shaders)
@ -28,6 +29,23 @@ set(HOST_SHADERS_INCLUDE ${SHADER_INCLUDE} PARENT_SCOPE)
set(INPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/source_shader.h.in)
set(HEADER_GENERATOR ${CMAKE_CURRENT_SOURCE_DIR}/StringShaderHeader.cmake)
# Check if `--quiet` is available on host's glslangValidator version
# glslangValidator prints to STDERR iff an unrecognized flag is passed to it
execute_process(
COMMAND
${GLSLANGVALIDATOR} ${QUIET_FLAG}
ERROR_VARIABLE
GLSLANG_ERROR
# STDOUT variable defined to silence unnecessary output during CMake configuration
OUTPUT_VARIABLE
GLSLANG_OUTPUT
)
if (NOT GLSLANG_ERROR STREQUAL "")
message(WARNING "Refusing to use unavailable flag `${QUIET_FLAG}` on `${GLSLANGVALIDATOR}`")
set(QUIET_FLAG "")
endif()
foreach(FILENAME IN ITEMS ${SHADER_FILES})
string(REPLACE "." "_" SHADER_NAME ${FILENAME})
set(SOURCE_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME})
@ -55,7 +73,7 @@ foreach(FILENAME IN ITEMS ${SHADER_FILES})
OUTPUT
${SPIRV_HEADER_FILE}
COMMAND
${GLSLANGVALIDATOR} -V --quiet ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE}
${GLSLANGVALIDATOR} -V ${QUIET_FLAG} ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE}
MAIN_DEPENDENCY
${SOURCE_FILE}
)