cube: Check in SPIRV code

The shader code used by vkcube & vkcubepp is now checked into the source.
This prevents users from needing a version of glslang on the system in
order to build the project. While the existing mechanism of fetching a
glslang binary from github was adequate, the version used linked to
VS 2013 which caused build failures with rather cryptic linker errors.
Since changing the shaders happens very infrequently, the decision has
been made to check in the spir-v code.

The CMake logic to compile the shaders remainds, but is put behind a
new build flag COMPILE_CUBE_SHADERS.

3 files changed, 109 insertions, 43 deletions

diff --git a/cube/CMakeLists.txt b/cube/CMakeLists.txt
index 9b16da31..02674f75 100644
--- a/cube/CMakeLists.txt
+++ b/cube/CMakeLists.txt
@@ -15,39 +15,10 @@
 # limitations under the License.
 # ~~~
 
-set(CUBE_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR}/..)
+set(CUBE_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR})
 
 set(SCRIPTS_DIR "${PROJECT_SOURCE_DIR}/scripts")
 
-if (NOT GLSLANG_INSTALL_DIR AND DEFINED ENV{GLSLANG_INSTALL_DIR})
-    set(GLSLANG_INSTALL_DIR $ENV{GLSLANG_INSTALL_DIR})
-endif()
-
-if(GLSLANG_INSTALL_DIR)
-    message(STATUS "Using GLSLANG_INSTALL_DIR to look for glslangValidator")
-    find_program(GLSLANG_VALIDATOR names glslangValidator HINTS "${GLSLANG_INSTALL_DIR}/bin")
-else()
-    find_package(Python3 REQUIRED QUIET)
-    set(GLSLANG_VALIDATOR_NAME "glslangValidator")
-    message(STATUS "Using cmake find_program to look for glslangValidator")
-    if(WIN32)
-        execute_process(
-            COMMAND ${Python3_EXECUTABLE} ${SCRIPTS_DIR}/fetch_glslangvalidator.py glslang-master-windows-x64-Release.zip)
-        set(GLSLANG_VALIDATOR_NAME "glslangValidator.exe")
-    elseif(APPLE)
-        execute_process(COMMAND ${Python3_EXECUTABLE} ${SCRIPTS_DIR}/fetch_glslangvalidator.py glslang-master-osx-Release.zip)
-    elseif(UNIX AND NOT APPLE) # i.e. Linux
-        execute_process(COMMAND ${Python3_EXECUTABLE} ${SCRIPTS_DIR}/fetch_glslangvalidator.py glslang-master-linux-Release.zip)
-    endif()
-    if (WIN32)
-        set(PLATFORM_DIR "${PROJECT_SOURCE_DIR}/glslang/windows/bin")
-    elseif(APPLE)
-        set(PLATFORM_DIR "${PROJECT_SOURCE_DIR}/glslang/darwin/bin")
-    else()
-        set(PLATFORM_DIR "${PROJECT_SOURCE_DIR}/glslang/linux/bin")
-    endif()
-    find_program(GLSLANG_VALIDATOR NAMES ${GLSLANG_VALIDATOR_NAME} HINTS ${PLATFORM_DIR})
-endif()
 
 if(UNIX AND NOT APPLE) # i.e. Linux
     option(BUILD_WSI_XCB_SUPPORT "Build XCB WSI support" ON)
@@ -177,19 +148,23 @@ endif()
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
 
-add_custom_command(COMMENT "Compiling cube vertex shader"
-                   OUTPUT cube.vert.inc
-                   COMMAND ${GLSLANG_VALIDATOR} -V -x -o ${CMAKE_CURRENT_BINARY_DIR}/cube.vert.inc
-                           ${PROJECT_SOURCE_DIR}/cube/cube.vert
-                   MAIN_DEPENDENCY ${PROJECT_SOURCE_DIR}/cube/cube.vert
-                   DEPENDS ${PROJECT_SOURCE_DIR}/cube/cube.vert ${GLSLANG_VALIDATOR})
-add_custom_command(COMMENT "Compiling cube fragment shader"
-                   OUTPUT cube.frag.inc
-                   COMMAND ${GLSLANG_VALIDATOR} -V -x -o ${CMAKE_CURRENT_BINARY_DIR}/cube.frag.inc
-                           ${PROJECT_SOURCE_DIR}/cube/cube.frag
-                   MAIN_DEPENDENCY ${PROJECT_SOURCE_DIR}/cube/cube.frag
-                   DEPENDS ${PROJECT_SOURCE_DIR}/cube/cube.frag ${GLSLANG_VALIDATOR})
-include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
+if (COMPILE_CUBE_SHADERS)
+    # Try to find glslang in system paths or in an SDK if the VULKAN_SDK env-var is set
+    find_program(GLSLANG_VALIDATOR names glslang glslangValidator HINTS $ENV{GLSLANG_INSTALL_DIR} $ENV{VULKAN_SDK}/bin $ENV{VULKAN_SDK}/Bin)
+
+    add_custom_command(COMMENT "Compiling cube vertex shader"
+                    OUTPUT cube.vert.inc
+                    COMMAND ${GLSLANG_VALIDATOR} -V -x -o ${CMAKE_CURRENT_SOURCE_DIR}/cube.vert.inc
+                            ${PROJECT_SOURCE_DIR}/cube/cube.vert
+                    MAIN_DEPENDENCY ${PROJECT_SOURCE_DIR}/cube/cube.vert
+                    DEPENDS ${PROJECT_SOURCE_DIR}/cube/cube.vert ${GLSLANG_VALIDATOR})
+    add_custom_command(COMMENT "Compiling cube fragment shader"
+                    OUTPUT cube.frag.inc
+                    COMMAND ${GLSLANG_VALIDATOR} -V -x -o ${CMAKE_CURRENT_SOURCE_DIR}/cube.frag.inc
+                            ${PROJECT_SOURCE_DIR}/cube/cube.frag
+                    MAIN_DEPENDENCY ${PROJECT_SOURCE_DIR}/cube/cube.frag
+                    DEPENDS ${PROJECT_SOURCE_DIR}/cube/cube.frag ${GLSLANG_VALIDATOR})
+endif()
 
 if(WIN32)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_CRT_SECURE_NO_WARNINGS -D_USE_MATH_DEFINES")
diff --git a/cube/cube.frag.inc b/cube/cube.frag.inc
new file mode 100644
index 00000000..98ff5213
--- /dev/null
+++ b/cube/cube.frag.inc
@@ -0,0 +1,41 @@
+	// 7.9.2888
+	0x07230203,0x00010000,0x00080007,0x00000030,0x00000000,0x00020011,0x00000001,0x0006000b,
+	0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
+	0x0008000f,0x00000004,0x00000004,0x6e69616d,0x00000000,0x0000000b,0x00000022,0x0000002a,
+	0x00030010,0x00000004,0x00000007,0x00030003,0x00000002,0x00000190,0x00090004,0x415f4c47,
+	0x735f4252,0x72617065,0x5f657461,0x64616873,0x6f5f7265,0x63656a62,0x00007374,0x00090004,
+	0x415f4c47,0x735f4252,0x69646168,0x6c5f676e,0x75676e61,0x5f656761,0x70303234,0x006b6361,
+	0x00040005,0x00000004,0x6e69616d,0x00000000,0x00030005,0x00000009,0x00005864,0x00050005,
+	0x0000000b,0x67617266,0x736f705f,0x00000000,0x00030005,0x0000000e,0x00005964,0x00040005,
+	0x00000011,0x6d726f6e,0x00006c61,0x00040005,0x00000017,0x6867696c,0x00000074,0x00050005,
+	0x00000022,0x61724675,0x6c6f4367,0x0000726f,0x00030005,0x00000027,0x00786574,0x00050005,
+	0x0000002a,0x63786574,0x64726f6f,0x00000000,0x00040047,0x0000000b,0x0000001e,0x00000001,
+	0x00040047,0x00000022,0x0000001e,0x00000000,0x00040047,0x00000027,0x00000022,0x00000000,
+	0x00040047,0x00000027,0x00000021,0x00000001,0x00040047,0x0000002a,0x0000001e,0x00000000,
+	0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,0x00000020,
+	0x00040017,0x00000007,0x00000006,0x00000003,0x00040020,0x00000008,0x00000007,0x00000007,
+	0x00040020,0x0000000a,0x00000001,0x00000007,0x0004003b,0x0000000a,0x0000000b,0x00000001,
+	0x00040020,0x00000016,0x00000007,0x00000006,0x0004002b,0x00000006,0x00000018,0x00000000,
+	0x0004002b,0x00000006,0x00000019,0x3ed91687,0x0004002b,0x00000006,0x0000001a,0x3f10e560,
+	0x0004002b,0x00000006,0x0000001b,0x3f34fdf4,0x0006002c,0x00000007,0x0000001c,0x00000019,
+	0x0000001a,0x0000001b,0x00040017,0x00000020,0x00000006,0x00000004,0x00040020,0x00000021,
+	0x00000003,0x00000020,0x0004003b,0x00000021,0x00000022,0x00000003,0x00090019,0x00000024,
+	0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000000,0x0003001b,
+	0x00000025,0x00000024,0x00040020,0x00000026,0x00000000,0x00000025,0x0004003b,0x00000026,
+	0x00000027,0x00000000,0x00040020,0x00000029,0x00000001,0x00000020,0x0004003b,0x00000029,
+	0x0000002a,0x00000001,0x00040017,0x0000002b,0x00000006,0x00000002,0x00050036,0x00000002,
+	0x00000004,0x00000000,0x00000003,0x000200f8,0x00000005,0x0004003b,0x00000008,0x00000009,
+	0x00000007,0x0004003b,0x00000008,0x0000000e,0x00000007,0x0004003b,0x00000008,0x00000011,
+	0x00000007,0x0004003b,0x00000016,0x00000017,0x00000007,0x0004003d,0x00000007,0x0000000c,
+	0x0000000b,0x000400cf,0x00000007,0x0000000d,0x0000000c,0x0003003e,0x00000009,0x0000000d,
+	0x0004003d,0x00000007,0x0000000f,0x0000000b,0x000400d0,0x00000007,0x00000010,0x0000000f,
+	0x0003003e,0x0000000e,0x00000010,0x0004003d,0x00000007,0x00000012,0x00000009,0x0004003d,
+	0x00000007,0x00000013,0x0000000e,0x0007000c,0x00000007,0x00000014,0x00000001,0x00000044,
+	0x00000012,0x00000013,0x0006000c,0x00000007,0x00000015,0x00000001,0x00000045,0x00000014,
+	0x0003003e,0x00000011,0x00000015,0x0004003d,0x00000007,0x0000001d,0x00000011,0x00050094,
+	0x00000006,0x0000001e,0x0000001c,0x0000001d,0x0007000c,0x00000006,0x0000001f,0x00000001,
+	0x00000028,0x00000018,0x0000001e,0x0003003e,0x00000017,0x0000001f,0x0004003d,0x00000006,
+	0x00000023,0x00000017,0x0004003d,0x00000025,0x00000028,0x00000027,0x0004003d,0x00000020,
+	0x0000002c,0x0000002a,0x0007004f,0x0000002b,0x0000002d,0x0000002c,0x0000002c,0x00000000,
+	0x00000001,0x00050057,0x00000020,0x0000002e,0x00000028,0x0000002d,0x0005008e,0x00000020,
+	0x0000002f,0x0000002e,0x00000023,0x0003003e,0x00000022,0x0000002f,0x000100fd,0x00010038
diff --git a/cube/cube.vert.inc b/cube/cube.vert.inc
new file mode 100644
index 00000000..5d029c64
--- /dev/null
+++ b/cube/cube.vert.inc
@@ -0,0 +1,50 @@
+	// 7.9.2888
+	0x07230203,0x00010000,0x00080007,0x0000002f,0x00000000,0x00020011,0x00000001,0x0006000b,
+	0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
+	0x0009000f,0x00000000,0x00000004,0x6e69616d,0x00000000,0x00000009,0x00000015,0x0000001e,
+	0x0000002b,0x00030003,0x00000002,0x00000190,0x00090004,0x415f4c47,0x735f4252,0x72617065,
+	0x5f657461,0x64616873,0x6f5f7265,0x63656a62,0x00007374,0x00090004,0x415f4c47,0x735f4252,
+	0x69646168,0x6c5f676e,0x75676e61,0x5f656761,0x70303234,0x006b6361,0x00040005,0x00000004,
+	0x6e69616d,0x00000000,0x00050005,0x00000009,0x63786574,0x64726f6f,0x00000000,0x00030005,
+	0x0000000f,0x00667562,0x00040006,0x0000000f,0x00000000,0x0050564d,0x00060006,0x0000000f,
+	0x00000001,0x69736f70,0x6e6f6974,0x00000000,0x00050006,0x0000000f,0x00000002,0x72747461,
+	0x00000000,0x00040005,0x00000011,0x66756275,0x00000000,0x00060005,0x00000015,0x565f6c67,
+	0x65747265,0x646e4978,0x00007865,0x00060005,0x0000001c,0x505f6c67,0x65567265,0x78657472,
+	0x00000000,0x00060006,0x0000001c,0x00000000,0x505f6c67,0x7469736f,0x006e6f69,0x00070006,
+	0x0000001c,0x00000001,0x505f6c67,0x746e696f,0x657a6953,0x00000000,0x00070006,0x0000001c,
+	0x00000002,0x435f6c67,0x4470696c,0x61747369,0x0065636e,0x00030005,0x0000001e,0x00000000,
+	0x00050005,0x0000002b,0x67617266,0x736f705f,0x00000000,0x00040047,0x00000009,0x0000001e,
+	0x00000000,0x00040047,0x0000000d,0x00000006,0x00000010,0x00040047,0x0000000e,0x00000006,
+	0x00000010,0x00040048,0x0000000f,0x00000000,0x00000005,0x00050048,0x0000000f,0x00000000,
+	0x00000023,0x00000000,0x00050048,0x0000000f,0x00000000,0x00000007,0x00000010,0x00050048,
+	0x0000000f,0x00000001,0x00000023,0x00000040,0x00050048,0x0000000f,0x00000002,0x00000023,
+	0x00000280,0x00030047,0x0000000f,0x00000002,0x00040047,0x00000011,0x00000022,0x00000000,
+	0x00040047,0x00000011,0x00000021,0x00000000,0x00040047,0x00000015,0x0000000b,0x0000002a,
+	0x00050048,0x0000001c,0x00000000,0x0000000b,0x00000000,0x00050048,0x0000001c,0x00000001,
+	0x0000000b,0x00000001,0x00050048,0x0000001c,0x00000002,0x0000000b,0x00000003,0x00030047,
+	0x0000001c,0x00000002,0x00040047,0x0000002b,0x0000001e,0x00000001,0x00020013,0x00000002,
+	0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,
+	0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,0x00000007,0x0004003b,0x00000008,
+	0x00000009,0x00000003,0x00040018,0x0000000a,0x00000007,0x00000004,0x00040015,0x0000000b,
+	0x00000020,0x00000000,0x0004002b,0x0000000b,0x0000000c,0x00000024,0x0004001c,0x0000000d,
+	0x00000007,0x0000000c,0x0004001c,0x0000000e,0x00000007,0x0000000c,0x0005001e,0x0000000f,
+	0x0000000a,0x0000000d,0x0000000e,0x00040020,0x00000010,0x00000002,0x0000000f,0x0004003b,
+	0x00000010,0x00000011,0x00000002,0x00040015,0x00000012,0x00000020,0x00000001,0x0004002b,
+	0x00000012,0x00000013,0x00000002,0x00040020,0x00000014,0x00000001,0x00000012,0x0004003b,
+	0x00000014,0x00000015,0x00000001,0x00040020,0x00000017,0x00000002,0x00000007,0x0004002b,
+	0x0000000b,0x0000001a,0x00000001,0x0004001c,0x0000001b,0x00000006,0x0000001a,0x0005001e,
+	0x0000001c,0x00000007,0x00000006,0x0000001b,0x00040020,0x0000001d,0x00000003,0x0000001c,
+	0x0004003b,0x0000001d,0x0000001e,0x00000003,0x0004002b,0x00000012,0x0000001f,0x00000000,
+	0x00040020,0x00000020,0x00000002,0x0000000a,0x0004002b,0x00000012,0x00000023,0x00000001,
+	0x00040017,0x00000029,0x00000006,0x00000003,0x00040020,0x0000002a,0x00000003,0x00000029,
+	0x0004003b,0x0000002a,0x0000002b,0x00000003,0x00050036,0x00000002,0x00000004,0x00000000,
+	0x00000003,0x000200f8,0x00000005,0x0004003d,0x00000012,0x00000016,0x00000015,0x00060041,
+	0x00000017,0x00000018,0x00000011,0x00000013,0x00000016,0x0004003d,0x00000007,0x00000019,
+	0x00000018,0x0003003e,0x00000009,0x00000019,0x00050041,0x00000020,0x00000021,0x00000011,
+	0x0000001f,0x0004003d,0x0000000a,0x00000022,0x00000021,0x0004003d,0x00000012,0x00000024,
+	0x00000015,0x00060041,0x00000017,0x00000025,0x00000011,0x00000023,0x00000024,0x0004003d,
+	0x00000007,0x00000026,0x00000025,0x00050091,0x00000007,0x00000027,0x00000022,0x00000026,
+	0x00050041,0x00000008,0x00000028,0x0000001e,0x0000001f,0x0003003e,0x00000028,0x00000027,
+	0x00050041,0x00000008,0x0000002c,0x0000001e,0x0000001f,0x0004003d,0x00000007,0x0000002d,
+	0x0000002c,0x0008004f,0x00000029,0x0000002e,0x0000002d,0x0000002d,0x00000000,0x00000001,
+	0x00000002,0x0003003e,0x0000002b,0x0000002e,0x000100fd,0x00010038