suyu/src/video_core/host_shaders/CMakeLists.txt
lat9nq 932c0184a7 cmake: Fix find_program usage for 3.15
yuzu requires CMake 3.15 yet find_program was using REQUIRED, which is
only available on 3.18 and later. Instead, we check for
"<VAR>-NOTFOUND".

In addition, check for additional requirements before building libusb or
FFmpeg with autotools. Otherwise, CMake configuration will pass yet
compilation will fail.
2021-06-13 01:15:54 -04:00

93 lines
3.1 KiB
CMake

set(SHADER_FILES
astc_decoder.comp
block_linear_unswizzle_2d.comp
block_linear_unswizzle_3d.comp
convert_depth_to_float.frag
convert_float_to_depth.frag
full_screen_triangle.vert
opengl_copy_bc4.comp
opengl_copy_bgra.comp
opengl_present.frag
opengl_present.vert
pitch_unswizzle.comp
vulkan_blit_color_float.frag
vulkan_blit_depth_stencil.frag
vulkan_present.frag
vulkan_present.vert
vulkan_quad_indexed.comp
vulkan_uint8.comp
)
find_program(GLSLANGVALIDATOR "glslangValidator")
if ("${GLSLANGVALIDATOR}" STREQUAL "GLSLANGVALIDATOR-NOTFOUND")
message(FATAL_ERROR "Required program `glslangValidator` not found.")
endif()
set(GLSL_FLAGS "")
set(QUIET_FLAG "--quiet")
set(SHADER_INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/include)
set(SHADER_DIR ${SHADER_INCLUDE}/video_core/host_shaders)
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})
# Skip generating source headers on Vulkan exclusive files
if (NOT ${FILENAME} MATCHES "vulkan.*")
set(SOURCE_HEADER_FILE ${SHADER_DIR}/${SHADER_NAME}.h)
add_custom_command(
OUTPUT
${SOURCE_HEADER_FILE}
COMMAND
${CMAKE_COMMAND} -P ${HEADER_GENERATOR} ${SOURCE_FILE} ${SOURCE_HEADER_FILE} ${INPUT_FILE}
MAIN_DEPENDENCY
${SOURCE_FILE}
DEPENDS
${INPUT_FILE}
# HEADER_GENERATOR should be included here but msbuild seems to assume it's always modified
)
set(SHADER_HEADERS ${SHADER_HEADERS} ${SOURCE_HEADER_FILE})
endif()
# Skip compiling to SPIR-V OpenGL exclusive files
if (NOT ${FILENAME} MATCHES "opengl.*")
string(TOUPPER ${SHADER_NAME}_SPV SPIRV_VARIABLE_NAME)
set(SPIRV_HEADER_FILE ${SHADER_DIR}/${SHADER_NAME}_spv.h)
add_custom_command(
OUTPUT
${SPIRV_HEADER_FILE}
COMMAND
${GLSLANGVALIDATOR} -V ${QUIET_FLAG} ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE}
MAIN_DEPENDENCY
${SOURCE_FILE}
)
set(SHADER_HEADERS ${SHADER_HEADERS} ${SPIRV_HEADER_FILE})
endif()
endforeach()
add_custom_target(host_shaders
DEPENDS
${SHADER_HEADERS}
SOURCES
${SHADER_FILES}
)