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host_shaders: Modify shader cmake integration to allow for larger shaders

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using a raw string to encapsulate the entire shader code limits us to shaders of size less than 2KB. This change overcomes this limitation.
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ameerj
2021-02-13 15:52:21 -05:00
parent 2985e5e94c
commit f6566338eb
4 changed files with 27 additions and 8 deletions
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22
src/video_core/host_shaders/StringShaderHeader.cmake
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@ -6,7 +6,27 @@ get_filename_component(CONTENTS_NAME ${SOURCE_FILE} NAME)
string(REPLACE "." "_" CONTENTS_NAME ${CONTENTS_NAME})
string(TOUPPER ${CONTENTS_NAME} CONTENTS_NAME)
file(READ ${SOURCE_FILE} CONTENTS)
FILE(READ ${SOURCE_FILE} line_contents)
# Replace double quotes with single quotes,
# as double quotes will be used to wrap the lines
STRING(REGEX REPLACE "\"" "'" line_contents "${line_contents}")
# CMake separates list elements with semicolons, but semicolons
# are used extensively in the shader code.
# Replace with a temporary marker, to be reverted later.
STRING(REGEX REPLACE ";" "{{SEMICOLON}}" line_contents "${line_contents}")
# Make every line an individual element in the CMake list.
STRING(REGEX REPLACE "\n" ";" line_contents "${line_contents}")
# Build the shader string, wrapping each line in double quotes.
foreach(line IN LISTS line_contents)
string(CONCAT CONTENTS "${CONTENTS}" \"${line}\\n\"\n)
endforeach()
# Revert the original semicolons in the source.
STRING(REGEX REPLACE "{{SEMICOLON}}" ";" CONTENTS "${CONTENTS}")
get_filename_component(OUTPUT_DIR ${HEADER_FILE} DIRECTORY)
make_directory(${OUTPUT_DIR})