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# SPDX-FileCopyrightText: 2018 yuzu Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
set(FIDELITYFX_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/externals/FidelityFX-FSR/ffx-fsr)
set(GLSL_INCLUDES
fidelityfx_fsr.comp
${FIDELITYFX_INCLUDE_DIR}/ffx_a.h
${FIDELITYFX_INCLUDE_DIR}/ffx_fsr1.h
)
set(SHADER_FILES
astc_decoder.comp
blit_color_float.frag
block_linear_unswizzle_2d.comp
block_linear_unswizzle_3d.comp
convert_abgr8_to_d24s8.frag
convert_d24s8_to_abgr8.frag
convert_depth_to_float.frag
convert_float_to_depth.frag
convert_s8d24_to_abgr8.frag
full_screen_triangle.vert
fxaa.frag
fxaa.vert
opengl_convert_s8d24.comp
opengl_copy_bc4.comp
opengl_present.frag
opengl_present.vert
opengl_present_scaleforce.frag
opengl_smaa.glsl
pitch_unswizzle.comp
present_bicubic.frag
present_gaussian.frag
smaa_edge_detection.vert
smaa_edge_detection.frag
smaa_blending_weight_calculation.vert
smaa_blending_weight_calculation.frag
smaa_neighborhood_blending.vert
smaa_neighborhood_blending.frag
vulkan_blit_depth_stencil.frag
vulkan_fidelityfx_fsr_easu_fp16.comp
vulkan_fidelityfx_fsr_easu_fp32.comp
vulkan_fidelityfx_fsr_rcas_fp16.comp
vulkan_fidelityfx_fsr_rcas_fp32.comp
vulkan_present.frag
vulkan_present.vert
vulkan_present_scaleforce_fp16.frag
vulkan_present_scaleforce_fp32.frag
vulkan_quad_indexed.comp
vulkan_turbo_mode.comp
vulkan_uint8.comp
)
find_program(GLSLANGVALIDATOR "glslangValidator")
if ("${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 ${QUIET_FLAG} -I"${FIDELITYFX_INCLUDE_DIR}" ${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()
set(SHADER_SOURCES ${SHADER_FILES})
list(APPEND SHADER_SOURCES ${GLSL_INCLUDES})
add_custom_target(host_shaders
DEPENDS
${SHADER_HEADERS}
SOURCES
${SHADER_SOURCES}
)
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