Add GPU tilers/tests

src/embed_spirv.cmake

@@ -0,0 +1,30 @@
+if(NOT DEFINED INPUT OR NOT DEFINED OUTPUT OR NOT DEFINED SYMBOL)
+	message(FATAL_ERROR "embed_spirv.cmake requires INPUT, OUTPUT, and SYMBOL")
+endif()
+
+file(READ "${INPUT}" bytes HEX)
+string(LENGTH "${bytes}" length)
+math(EXPR remainder "${length} % 8")
+if(NOT remainder EQUAL 0)
+	message(FATAL_ERROR "SPIR-V byte count is not a multiple of four: ${INPUT}")
+endif()
+
+set(contents "#pragma once\n#include <cstdint>\ninline constexpr uint32_t ${SYMBOL}[] = {\n")
+set(column 0)
+while(length GREATER 0)
+	string(SUBSTRING "${bytes}" 0 8 word)
+	string(SUBSTRING "${word}" 0 2 b0)
+	string(SUBSTRING "${word}" 2 2 b1)
+	string(SUBSTRING "${word}" 4 2 b2)
+	string(SUBSTRING "${word}" 6 2 b3)
+	string(APPEND contents "0x${b3}${b2}${b1}${b0}u,")
+	math(EXPR column "${column} + 1")
+	if(column EQUAL 8)
+		string(APPEND contents "\n")
+		set(column 0)
+	endif()
+	string(SUBSTRING "${bytes}" 8 -1 bytes)
+	math(EXPR length "${length} - 8")
+endwhile()
+string(APPEND contents "\n};\n")
+file(WRITE "${OUTPUT}" "${contents}")