Make separate feature for OpenGL load tests dependencies. (#940)

So OpenGL load tests-specific dependency is only installed when those
tests are configured.

CMakeLists.txt

@@ -86,6 +86,9 @@ set_property( CACHE KTX_FEATURE_LOADTEST_APPS
 
 if(NOT KTX_FEATURE_LOADTEST_APPS MATCHES OFF)
  set(VCPKG_MANIFEST_FEATURES loadtests)
+ if (KTX_FEATURE_LOADTEST_APPS MATCHES OpenGL)
+ list(APPEND VCPKG_MANIFEST_FEATURES glloadtests)
+ endif()
  if(CMAKE_SYSTEM_NAME STREQUAL "iOS")
  # Explicitly set the triplet to avoid potential trouble.
  # Automatic triplet selection in CI, which runs on x86_64, selects

vcpkg.json

@@ -3,13 +3,9 @@
  "name": "ktx-software",
  "features": {
  "loadtests": {
- "description": "OpenGL & Vulkan Load Tests. All dependencies from vcpkg",
+ "description": "OpenGL & Vulkan Load Tests.",
  "dependencies": [
  "assimp",
- {
- "name": "glew",
- "platform": "windows"
- },
  {
  "name": "sdl2",
  "default-features": true,
@@ -18,6 +14,15 @@
  ]
  }
  ]
+ },
+ "glloadtests": {
+ "description": "OpenGL Load Tests.",
+ "dependencies": [
+ {
+ "name": "glew",
+ "platform": "windows"
+ }
+ ]
  }
  }
 }