Bug 272222 – Fix incorrect EGL function type definitions in PlatformDisplay

• Component: Platform
• Status: RESOLVED FIXED

[Adrian Perez]

The “Source/WebCore/platform/graphics/PlatformDisplay.cpp” contains a few
definitions of EGL extension function types (PFN??PROC) which look like this:

  #if !defined(PFNEGLDESTROYIMAGEPROC)
  typedef EGLBoolean (*PFNEGLDESTROYIMAGEPROC) (EGLDisplay, EGLImage);
  #endif

  #if !defined(PFNEGLCREATEIMAGEKHRPROC)
  typedef EGLImageKHR (*PFNEGLCREATEIMAGEKHRPROC) (EGLDisplay, EGLContext, EGLenum target, EGLClientBuffer, const EGLint* attribList);
  #endif

These are missing usage of the “EGLAPIENTRYP” macro. Also, the PFN??PROC are
type definitions and not macros in the EGL headers so these will be always
defined even if already present, instead we should gate their definition
either on the extension name macro i.e. defined(EGL_KHR_image_base), or on
the EGL version macro i.e. defined(EGL_VERSION_1_5).

With the outlined changes then the definitions would compliant with the
EGL specifications, and coherent with what is done elsewhere in WebKit.

[Adrian Perez]

Pull request: https://github.com/WebKit/WebKit/pull/26901

[EWS]

Committed 277192@main (91f787886ac5): <https://commits.webkit.org/277192@main>

Reviewed commits have been landed. Closing PR #26901 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/126067794>