Issue #645: Implement eglQuerySurface for EGL_HEIGHT and EGL_WIDTH.

src/library_egl.js

@@ -318,10 +318,10 @@ var LibraryEGL = {
       // Existing Android implementation seems to do so at least.
       return 1;
     case 0x3057: // EGL_WIDTH
-      // TODO
+      {{{ makeSetValue('value', '0', 'Module.canvas.width.toString()', 'i32') }}};
       return 1;
     case 0x3056: // EGL_HEIGHT
-      // TODO
+      {{{ makeSetValue('value', '0', 'Module.canvas.height.toString()', 'i32') }}};
       return 1;
     case 0x3090: // EGL_HORIZONTAL_RESOLUTION
       {{{ makeSetValue('value', '0', '-1' /* EGL_UNKNOWN */, 'i32') }}};

tests/runner.py

@@ -11728,6 +11728,12 @@ elif 'browser' in str(sys.argv):
       Popen([PYTHON, EMCC, '-O2', os.path.join(self.get_dir(), 'glfw.c'), '-o', 'page.html']).communicate()
       self.run_browser('page.html', '', '/report_result?1')
 
+    def test_egl_width_height(self):
+      open(os.path.join(self.get_dir(), 'test_egl_width_height.c'), 'w').write(self.with_report_result(open(path_from_root('tests', 'test_egl_width_height.c')).read()))
+
+      Popen([PYTHON, EMCC, '-O2', os.path.join(self.get_dir(), 'test_egl_width_height.c'), '-o', 'page.html']).communicate()
+      self.run_browser('page.html', 'Should print "(300, 150)" -- the size of the canvas in pixels', '/report_result?1')
+
     def test_freealut(self):
       programs = self.get_library('freealut', os.path.join('examples', 'hello_world.bc'), make_args=['EXEEXT=.bc'])
       for program in programs:

tests/test_egl_width_height.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <EGL/egl.h>
+
+int main(int argc, char *argv[])
+{
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+
+    EGLint major, minor;
+    eglInitialize(display, &major, &minor);
+
+    EGLint numConfigs;
+    eglGetConfigs(display, NULL, 0, &numConfigs);
+
+    EGLint attribs[] = {
+        EGL_RED_SIZE, 5,
+        EGL_GREEN_SIZE, 6,
+        EGL_BLUE_SIZE, 5,
+        EGL_NONE
+    };
+    EGLConfig config;
+    eglChooseConfig(display, attribs, &config, 1, &numConfigs);
+
+    EGLNativeWindowType dummyWindow;
+    EGLSurface surface = eglCreateWindowSurface(display, config, dummyWindow, NULL);
+
+    EGLint width, height;
+    eglQuerySurface(display, surface, EGL_WIDTH, &width);
+    eglQuerySurface(display, surface, EGL_HEIGHT, &height);
+
+    printf("(%d, %d)\n", width, height);
+
+#ifdef REPORT_RESULT
+    int result = 0;
+    if(width == 300 && height == 150)
+    {
+        result = 1;
+    }
+    REPORT_RESULT();
+#endif
+}