API Change [GLProfile/GLContext]: Add notion of hardware acceleration in GLProfile.get<Profile>() methods.

We need to distinguish between software and hardware accelerated OpenGL profiles
to allow choosing the proper profiles [default, GL2ES1, GL2ES2, ..]
on platforms where both, software and hardware implementations exist (GL, GLES2, ..).

Where no preference is being requested, hardware acceleration is favored:
  GLProfile.getDefault()
  GLProfile.getGL2ES1()
  GLProfile.getGL2ES2()

Some method signatures needed to change
GLProfile:
  getMaxProgrammable(AbstractGraphicsDevice device) ->
  getMaxProgrammable(AbstractGraphicsDevice device, boolean favorHardwareRasterizer)

GLProfile adds: isHardwareRasterizer()

Determination whether a hardware acceleration is being used or not
is extended in GLContextImpl by querying the current context's
GL_RENDERER string. If the latter contains 'software' (case insensitive)
it is not hardware accelerated. At least this works w/ newer Mesa3D impl,
where GLX_SLOW_CONFIG is not set!

1 files changed, 21 insertions, 0 deletions

diff --git a/src/jogl/native/JoglCommon.c b/src/jogl/native/JoglCommon.c
index 16f60e4e7..c1d6ad181 100644
--- a/src/jogl/native/JoglCommon.c
+++ b/src/jogl/native/JoglCommon.c
@@ -1,6 +1,10 @@
 
+#include "jogamp_opengl_GLContextImpl.h"
 #include "JoglCommon.h"
 
+#include <assert.h>
+#include <KHR/khrplatform.h>
+
 static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
 static jclass    runtimeExceptionClz=NULL;
 
@@ -53,3 +57,20 @@ jchar* JoglCommon_GetNullTerminatedStringChars(JNIEnv* env, jstring str)
     return strChars;
 }
 
+/*
+ * Class:     jogamp_opengl_GLContextImpl
+ * Method:    glGetStringInt
+ * Signature: (IJ)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL 
+Java_jogamp_opengl_GLContextImpl_glGetStringInt(JNIEnv *env, jclass _unused, jint name, jlong procAddress) {
+  typedef const khronos_uint8_t *  (KHRONOS_APIENTRY*_local_PFNGLGETSTRINGPROC)(unsigned int name);
+  _local_PFNGLGETSTRINGPROC ptr_glGetString;
+  const khronos_uint8_t *  _res;
+  ptr_glGetString = (_local_PFNGLGETSTRINGPROC) (intptr_t) procAddress;
+  assert(ptr_glGetString != NULL);
+  _res = (* ptr_glGetString) ((unsigned int) name);
+  if (NULL == _res) return NULL;
+  return (*env)->NewStringUTF(env, _res);
+}
+