Only request PostSubBuffer support when the extension is available.

BUG=angle:658 Change-Id: I6828290ef89c57e8c794f0fca6e5991c492b67aa Reviewed-on: https://chromium-review.googlesource.com/242572Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

Only request PostSubBuffer support when the extension is available.
15dc05fc · Geoff Lang · f81b6a15 · 15dc05fc
Commit 15dc05fc authored Jan 22, 2015 by Geoff Lang
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Showing with 10 additions and 5 deletions

EGLWindow.cpp util/EGLWindow.cpp +10 -5

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--- a/util/EGLWindow.cpp
+++ b/util/EGLWindow.cpp
@@ -5,6 +5,7 @@
 //

 #include <cassert>
+#include <vector>

 #include "EGLWindow.h"
 #include "OSWindow.h"
@@ -154,13 +155,17 @@ bool EGLWindow::initializeGL(OSWindow *osWindow)
    eglGetConfigAttrib(mDisplay, mConfig, EGL_DEPTH_SIZE, &mDepthBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_STENCIL_SIZE, &mStencilBits);

-    const EGLint surfaceAttributes[] =
+    std::vector<EGLint> surfaceAttributes;
+    if (strstr(eglQueryString(mDisplay, EGL_EXTENSIONS), "EGL_NV_post_sub_buffer") != nullptr)
    {
-        EGL_POST_SUB_BUFFER_SUPPORTED_NV, EGL_TRUE,
-        EGL_NONE, EGL_NONE,
-    };
+        surfaceAttributes.push_back(EGL_POST_SUB_BUFFER_SUPPORTED_NV);
+        surfaceAttributes.push_back(EGL_TRUE);
+    }
+
+    surfaceAttributes.push_back(EGL_NONE);
+    surfaceAttributes.push_back(EGL_NONE);

-    mSurface = eglCreateWindowSurface(mDisplay, mConfig, osWindow->getNativeWindow(), surfaceAttributes);
+    mSurface = eglCreateWindowSurface(mDisplay, mConfig, osWindow->getNativeWindow(), &surfaceAttributes[0]);
    if (mSurface == EGL_NO_SURFACE)
    {
        eglGetError(); // Clear error and try again