cmake: test for EGL and GLES on Windows, avoid EGL test on MSVC

CMakeLists.txt

@@ -2026,10 +2026,8 @@ elseif(WINDOWS)
  endif()
 
  if(SDL_OPENGLES)
- set(SDL_VIDEO_OPENGL_EGL 1)
- set(SDL_VIDEO_OPENGL_ES2 1)
- set(SDL_VIDEO_RENDER_OGL_ES2 1)
- set(HAVE_OPENGLES TRUE)
+ CheckEGL()
+ CheckOpenGLES()
  endif()
 
  if(SDL_VULKAN)

cmake/PreseedMSVCCache.cmake

@@ -1,5 +1,7 @@
 if(MSVC)
  function(SDL_Preseed_CMakeCache)
+ set(HAVE_OPENGLES_V1 "" CACHE INTERNAL "Test HAVE_OPENGLES_V1")
+ set(HAVE_OPENGLES_V2 "1" CACHE INTERNAL "Test HAVE_OPENGLES_V2")
  set(COMPILER_SUPPORTS_W3 "1" CACHE INTERNAL "Test /W3")
  set(COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS "" CACHE INTERNAL "Test COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS")
  set(HAVE_ALLOCA_H "" CACHE INTERNAL "Have include alloca.h")

cmake/sdlchecks.cmake

@@ -679,21 +679,25 @@ endmacro()
 # - PkgCheckModules
 macro(CheckEGL)
  if(SDL_OPENGL OR SDL_OPENGLES)
- cmake_push_check_state()
- find_package(OpenGL MODULE)
- list(APPEND CMAKE_REQUIRED_INCLUDES ${OPENGL_EGL_INCLUDE_DIRS})
- list(APPEND CMAKE_REQUIRED_INCLUDES "${SDL3_SOURCE_DIR}/src/video/khronos")
- check_c_source_compiles("
- #define EGL_API_FB
- #define MESA_EGL_NO_X11_HEADERS
- #define EGL_NO_X11
- #include <EGL/egl.h>
- #include <EGL/eglext.h>
- int main (int argc, char** argv) { return 0; }" HAVE_OPENGL_EGL)
- cmake_pop_check_state()
- if(HAVE_OPENGL_EGL)
+ if(NOT MSVC)
+ cmake_push_check_state()
+ find_package(OpenGL MODULE)
+ list(APPEND CMAKE_REQUIRED_INCLUDES ${OPENGL_EGL_INCLUDE_DIRS})
+ list(APPEND CMAKE_REQUIRED_INCLUDES "${SDL3_SOURCE_DIR}/src/video/khronos")
+ check_c_source_compiles("
+ #define EGL_API_FB
+ #define MESA_EGL_NO_X11_HEADERS
+ #define EGL_NO_X11
+ #include <EGL/egl.h>
+ #include <EGL/eglext.h>
+ int main (int argc, char** argv) { return 0; }" HAVE_OPENGL_EGL)
+ cmake_pop_check_state()
+ endif()
+ if(MSVC OR HAVE_OPENGL_EGL)
  set(SDL_VIDEO_OPENGL_EGL 1)
- sdl_link_dependency(egl INCLUDES ${OPENGL_EGL_INCLUDE_DIRS})
+ if(NOT MSVC)
+ sdl_link_dependency(egl INCLUDES ${OPENGL_EGL_INCLUDE_DIRS})
+ endif()
  endif()
  endif()
 endmacro()