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host_shaders: Modify shader cmake integration to allow for larger shaders
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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@ -1,4 +1,5 @@
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set(SHADER_FILES
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astc_decoder.comp
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block_linear_unswizzle_2d.comp
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block_linear_unswizzle_3d.comp
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convert_depth_to_float.frag
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@ -6,7 +6,27 @@ get_filename_component(CONTENTS_NAME ${SOURCE_FILE} NAME)
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string(REPLACE "." "_" CONTENTS_NAME ${CONTENTS_NAME})
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string(TOUPPER ${CONTENTS_NAME} CONTENTS_NAME)
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file(READ ${SOURCE_FILE} CONTENTS)
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FILE(READ ${SOURCE_FILE} line_contents)
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# Replace double quotes with single quotes,
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# as double quotes will be used to wrap the lines
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STRING(REGEX REPLACE "\"" "'" line_contents "${line_contents}")
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# CMake separates list elements with semicolons, but semicolons
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# are used extensively in the shader code.
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# Replace with a temporary marker, to be reverted later.
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STRING(REGEX REPLACE ";" "{{SEMICOLON}}" line_contents "${line_contents}")
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# Make every line an individual element in the CMake list.
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STRING(REGEX REPLACE "\n" ";" line_contents "${line_contents}")
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# Build the shader string, wrapping each line in double quotes.
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foreach(line IN LISTS line_contents)
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string(CONCAT CONTENTS "${CONTENTS}" \"${line}\\n\"\n)
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endforeach()
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# Revert the original semicolons in the source.
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STRING(REGEX REPLACE "{{SEMICOLON}}" ";" CONTENTS "${CONTENTS}")
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get_filename_component(OUTPUT_DIR ${HEADER_FILE} DIRECTORY)
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make_directory(${OUTPUT_DIR})
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@ -4,6 +4,8 @@
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namespace HostShaders {
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constexpr std::string_view @CONTENTS_NAME@ = R"(@CONTENTS@)";
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constexpr std::string_view @CONTENTS_NAME@ = {
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@CONTENTS@
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};
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} // namespace HostShaders
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@ -14,6 +14,7 @@
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/div_ceil.h"
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#include "video_core/host_shaders/astc_decoder_comp.h"
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#include "video_core/host_shaders/block_linear_unswizzle_2d_comp.h"
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#include "video_core/host_shaders/block_linear_unswizzle_3d_comp.h"
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#include "video_core/host_shaders/opengl_copy_bc4_comp.h"
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@ -62,17 +63,12 @@ size_t NumPixelsInCopy(const VideoCommon::ImageCopy& copy) {
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} // Anonymous namespace
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UtilShaders::UtilShaders(ProgramManager& program_manager_)
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: program_manager{program_manager_},
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: program_manager{program_manager_}, astc_decoder_program(MakeProgram(ASTC_DECODER_COMP)),
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block_linear_unswizzle_2d_program(MakeProgram(BLOCK_LINEAR_UNSWIZZLE_2D_COMP)),
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block_linear_unswizzle_3d_program(MakeProgram(BLOCK_LINEAR_UNSWIZZLE_3D_COMP)),
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pitch_unswizzle_program(MakeProgram(PITCH_UNSWIZZLE_COMP)),
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copy_bgra_program(MakeProgram(OPENGL_COPY_BGRA_COMP)),
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copy_bc4_program(MakeProgram(OPENGL_COPY_BC4_COMP)) {
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// TODO: Load shader string as a header
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std::string astc_path = "astc_decoder.comp";
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std::ifstream t(astc_path);
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std::string str((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
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astc_decoder_program = MakeProgram(str);
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MakeBuffers();
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}
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