Copied JOGL_2_SANDBOX r1957 on to trunk; JOGL_2_SANDBOX branch is now closed

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1959 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 336 insertions, 0 deletions

diff --git a/make/config/jogl/gl-impl-CustomJavaCode-gles2.java b/make/config/jogl/gl-impl-CustomJavaCode-gles2.java
new file mode 100755
index 000000000..28edd7a63
--- /dev/null
+++ b/make/config/jogl/gl-impl-CustomJavaCode-gles2.java
@@ -0,0 +1,336 @@
+// Tracks glBegin/glEnd calls to determine whether it is legal to
+// query Vertex Buffer Object state
+private boolean inBeginEndPair;
+
+public GLES2Impl(GLProfile glp, GLContextImpl context) {
+  this._context = context; 
+  this.bufferSizeTracker = context.getBufferSizeTracker();
+  this.glProfile = glp;
+}
+
+public final boolean isGL() {
+    return true;
+}
+  
+public final boolean isGL3() {
+    return false;
+}
+
+public final boolean isGL2() {
+    return false;
+}
+
+public final boolean isGLES1() {
+    return false;
+}
+
+public final boolean isGLES2() {
+    return true;
+}
+
+public final boolean isGLES() {
+    return true;
+}
+
+public final boolean isGL2ES1() {
+    return false;
+}
+
+public final boolean isGL2ES2() {
+    return true;
+}
+
+public final boolean hasGLSL() {
+    return true;
+}
+
+public final GL getGL() throws GLException {
+    return this;
+}
+
+public final GL3 getGL3() throws GLException {
+    throw new GLException("Not a GL3 implementation");
+}
+
+public final GL2 getGL2() throws GLException {
+    throw new GLException("Not a GL2 implementation");
+}
+
+public final GLES1 getGLES1() throws GLException {
+    throw new GLException("Not a GLES1 implementation");
+}
+
+public final GLES2 getGLES2() throws GLException {
+    return this;
+}
+
+public final GL2ES1 getGL2ES1() throws GLException {
+    throw new GLException("Not a GL2ES1 implementation");
+}
+
+public final GL2ES2 getGL2ES2() throws GLException {
+    return this;
+}
+
+public boolean isFunctionAvailable(String glFunctionName) {
+  return _context.isFunctionAvailable(glFunctionName);
+}
+
+public boolean isExtensionAvailable(String glExtensionName) {
+  return _context.isExtensionAvailable(glExtensionName);
+}
+
+public Object getExtension(String extensionName) {
+  // At this point we don't expose any extensions using this mechanism
+  return null;
+}
+
+/** Returns the context this GL object is associated with for better
+    error checking by DebugGL. */
+public GLContext getContext() {
+  return _context;
+}
+
+private GLContextImpl _context;
+
+/**
+ * Provides platform-independent access to the wglAllocateMemoryNV /
+ * glXAllocateMemoryNV extension.
+ */
+public java.nio.ByteBuffer glAllocateMemoryNV(int arg0, float arg1, float arg2, float arg3) {
+  return _context.glAllocateMemoryNV(arg0, arg1, arg2, arg3);
+}
+
+public void setSwapInterval(int interval) {
+  _context.setSwapInterval(interval);
+}
+
+public Object getPlatformGLExtensions() {
+  return _context.getPlatformGLExtensions();
+}
+
+//
+// Helpers for ensuring the correct amount of texture data
+//
+
+/** Returns the number of bytes required to fill in the appropriate
+    texture. This is computed as closely as possible based on the
+    pixel pack or unpack parameters. The logic in this routine is
+    based on code in the SGI OpenGL sample implementation. */
+
+private int imageSizeInBytes(int format, int type, int w, int h, int d,
+                             int dimensions, boolean pack) {
+  int elements = 0;
+  int esize = 0;
+  
+  if (w < 0) return 0;
+  if (h < 0) return 0;
+  if (d < 0) return 0;
+  switch (format) {
+  case GL_STENCIL_INDEX:
+    elements = 1;
+    break;
+  case GL_ALPHA:
+  case GL_LUMINANCE:
+  case GL_DEPTH_COMPONENT:
+    elements = 1;
+    break;
+  case GL_LUMINANCE_ALPHA:
+    elements = 2;
+    break;
+  case GL_RGB:
+    elements = 3;
+    break;
+  case GL_RGBA:
+    elements = 4;
+    break;
+  default:
+    return 0;
+  }
+  switch (type) {
+  case GL_BYTE:
+  case GL_UNSIGNED_BYTE:
+    esize = 1;
+    break;
+  case GL_SHORT:
+  case GL_UNSIGNED_SHORT:
+    esize = 2;
+    break;
+  case GL_UNSIGNED_SHORT_5_6_5:
+  case GL_UNSIGNED_SHORT_4_4_4_4:
+  case GL_UNSIGNED_SHORT_5_5_5_1:
+    esize = 2;
+    elements = 1;
+    break;
+  case GL_INT:
+  case GL_UNSIGNED_INT:
+  case GL_FLOAT:
+    esize = 4;
+    break;
+  default:
+    return 0;
+  }
+  return imageSizeInBytes(elements * esize, w, h, d, dimensions, pack);
+}
+
+private GLBufferStateTracker bufferStateTracker = new GLBufferStateTracker();
+private GLBufferSizeTracker  bufferSizeTracker;
+
+private boolean bufferObjectExtensionsInitialized = false;
+private boolean haveOESFramebufferObject;
+
+private void initBufferObjectExtensionChecks() {
+  if (bufferObjectExtensionsInitialized)
+    return;
+  bufferObjectExtensionsInitialized = true;
+  haveOESFramebufferObject  = isExtensionAvailable("GL_OES_framebuffer_object");
+}
+
+private boolean checkBufferObject(boolean avail,
+                                  boolean enabled,
+                                  int state,
+                                  String kind, boolean throwException) {
+  if (!avail) {
+    if (!enabled)
+      return true;
+    if(throwException) {
+        throw new GLException("Required extensions not available to call this function");
+    }
+    return false;
+  }
+  int buffer = bufferStateTracker.getBoundBufferObject(state, this);
+  if (enabled) {
+    if (buffer == 0) {
+      if(throwException) {
+          throw new GLException(kind + " must be enabled to call this method");
+      }
+      return false;
+    }
+  } else {
+    if (buffer != 0) {
+      if(throwException) {
+          throw new GLException(kind + " must be disabled to call this method");
+      }
+      return false;
+    }
+  }
+  return true;
+}  
+
+private boolean checkArrayVBODisabled(boolean throwException) { 
+  initBufferObjectExtensionChecks();
+  return checkBufferObject(true,
+                    false,
+                    GL.GL_ARRAY_BUFFER,
+                    "array vertex_buffer_object", throwException);
+}
+
+private boolean checkArrayVBOEnabled(boolean throwException) { 
+  initBufferObjectExtensionChecks();
+  return checkBufferObject(true,
+                    true,
+                    GL.GL_ARRAY_BUFFER,
+                    "array vertex_buffer_object", throwException);
+}
+
+private boolean checkElementVBODisabled(boolean throwException) { 
+  initBufferObjectExtensionChecks();
+  return checkBufferObject(true,
+                    false,
+                    GL.GL_ELEMENT_ARRAY_BUFFER,
+                    "element vertex_buffer_object", throwException);
+}
+
+private boolean checkElementVBOEnabled(boolean throwException) { 
+  initBufferObjectExtensionChecks();
+  return checkBufferObject(true,
+                    true,
+                    GL.GL_ELEMENT_ARRAY_BUFFER,
+                    "element vertex_buffer_object", throwException);
+}
+
+private boolean checkUnpackPBODisabled(boolean throwException) { 
+    // PBO n/a for ES 1.1 or ES 2.0
+    return true;
+}
+
+private boolean checkUnpackPBOEnabled(boolean throwException) { 
+    // PBO n/a for ES 1.1 or ES 2.0
+    return false;
+}
+
+private boolean checkPackPBODisabled(boolean throwException) { 
+    // PBO n/a for ES 1.1 or ES 2.0
+    return true;
+}
+
+private boolean checkPackPBOEnabled(boolean throwException) { 
+    // PBO n/a for ES 1.1 or ES 2.0
+    return false;
+}
+
+// Attempt to return the same ByteBuffer object from glMapBufferARB if
+// the vertex buffer object's base address and size haven't changed
+private static class ARBVBOKey {
+  private long addr;
+  private int  capacity;
+
+  ARBVBOKey(long addr, int capacity) {
+    this.addr = addr;
+    this.capacity = capacity;
+  }
+
+  public int hashCode() {
+    return (int) addr;
+  }
+
+  public boolean equals(Object o) {
+    if ((o == null) || (!(o instanceof ARBVBOKey))) {
+      return false;
+    }
+
+    ARBVBOKey other = (ARBVBOKey) o;
+    return ((addr == other.addr) && (capacity == other.capacity));
+  }
+}
+
+private Map/*<ARBVBOKey, ByteBuffer>*/ arbVBOCache = new HashMap();
+
+/** Entry point to C language function: <br> <code> LPVOID glMapBuffer(GLenum target, GLenum access); </code>    */
+public java.nio.ByteBuffer glMapBuffer(int target, int access) {
+  final long __addr_ = ((GLES2ProcAddressTable)_context.getGLProcAddressTable())._addressof_glMapBufferOES;
+  if (__addr_ == 0) {
+    throw new GLException("Method \"glMapBuffer\" not available");
+  }
+  int sz = bufferSizeTracker.getBufferSize(bufferStateTracker,
+                                           target,
+                                           this);
+  long addr;
+  addr = dispatch_glMapBuffer(target, access, __addr_);
+  if (addr == 0 || sz == 0) {
+    return null;
+  }
+  ARBVBOKey key = new ARBVBOKey(addr, sz);
+  java.nio.ByteBuffer _res = (java.nio.ByteBuffer) arbVBOCache.get(key);
+  if (_res == null) {
+    _res = newDirectByteBuffer(addr, sz);
+    InternalBufferUtil.nativeOrder(_res);
+    arbVBOCache.put(key, _res);
+  }
+  _res.position(0);
+  return _res;
+}
+
+/** Encapsulates function pointer for OpenGL function <br>: <code> LPVOID glMapBuffer(GLenum target, GLenum access); </code>    */
+native private long dispatch_glMapBuffer(int target, int access, long glProcAddress);
+
+native private ByteBuffer newDirectByteBuffer(long addr, int capacity);
+
+public void glClearDepth(double depth) {
+    glClearDepthf((float)depth); 
+}
+
+public void glDepthRange(double zNear, double zFar) {
+    glDepthRangef((float)zNear, (float)zFar); 
+}
+