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This directory is for shaders used in media_fill, gpgpu_fill, rendercopy
and media_spin libraries.
Till Gen8 shaders were generated using intel-gen4asm script (implementation in
assembler/ directory). From Gen8 it is possible to use Intel Graphics Assembler
to generate binary from asm instructions.
https://github.com/intel/intel-graphics-compiler
1. Clone IGC project
2. Go to igc/visa/iga
3. Build iga
cmake . && make
For maintaining compatibility with our tests there is a bin to hex converter
written in python:
$>converter.py input_file > output_file
e.g.$>python converter.py gen9_iga_output > gen9_hex_array
Commands used to generate the shader on gen7
$> m4 gpgpu_fill.gxa > gpgpu_fill.gxm
$> intel-gen4asm -g 7 -o <output> gpgpu_fill.gxm
Commands used to generate the shader on gen8
$> m4 media_fill.gxa > media_fill.gxm
$> intel-gen4asm -g 8 -o <output> media_fill.gxm
Gen11+ shader is generated using IGA (Intel Graphics Assembler).
Binary can no longer be generated using intel-gen4asm.
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