Bug 888 / Bug 891 - Enhance GLCapabilities-Query: Apply changes of commit 613e33ee8ffc1f2b9c5db1e1b5bb5253a159ed6d to EGL and WGL.

Note: WGL config query is already performed as a bulk operation.
Note: OSX does not perform such queries.

1 files changed, 26 insertions, 0 deletions

diff --git a/make/config/jogl/egl-CustomCCode.c b/make/config/jogl/egl-CustomCCode.c
new file mode 100644
index 000000000..0163c6742
--- /dev/null
+++ b/make/config/jogl/egl-CustomCCode.c
@@ -0,0 +1,26 @@
+#include <stdio.h> /* android */
+#include <gluegen_stdint.h>
+#include <gluegen_stddef.h>
+#include <EGL/egl.h>
+
+/*   Java->C glue code:
+ *   Java package: jogamp.opengl.egl.EGL
+ *    Java method: void eglGetConfigAttributes(long dpy, long config, IntBuffer attributes, IntBuffer values)
+ */
+Java_jogamp_opengl_egl_EGL_dispatch_1eglGetConfigAttributes(JNIEnv *env, jclass _unused, jlong dpy, jlong config, jint attributeCount, jobject attributes, jint attributes_byte_offset, jobject values, jint values_byte_offset, jlong procAddress) {
+  typedef EGLBoolean (EGLAPIENTRY*_local_PFNEGLGETCONFIGATTRIBPROC)(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *  value);
+  _local_PFNEGLGETCONFIGATTRIBPROC ptr_eglGetConfigAttrib = (_local_PFNEGLGETCONFIGATTRIBPROC) (intptr_t) procAddress;
+  assert(ptr_eglGetConfigAttrib != NULL);
+
+  if ( attributeCount > 0 && NULL != attributes ) {
+    int i;
+    int * attributes_ptr = (int *) (((char*) (*env)->GetDirectBufferAddress(env, attributes)) + attributes_byte_offset);
+    EGLint * values_ptr = (EGLint *) (((char*) (*env)->GetDirectBufferAddress(env, values)) + values_byte_offset);
+    for(i=0; i<attributeCount; i++) {
+        if( 0 == (* ptr_eglGetConfigAttrib) ((EGLDisplay) (intptr_t) dpy, (EGLConfig) (intptr_t) config, (EGLint) attributes_ptr[i], (EGLint *) &values_ptr[i]) ) {
+            attributes_ptr[i] = 0;
+        }
+    }
+  }
+}
+