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// Tracks glBegin/glEnd calls to determine whether it is legal to
// query Vertex Buffer Object state
private boolean inBeginEndPair;
public GLImpl(GLContextImpl context) {
this._context = context;
}
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;
}
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();
}
private void checkBufferObject(String extension1,
String extension2,
boolean enabled,
int state,
String kind) {
if (inBeginEndPair) {
throw new GLException("May not call this between glBegin and glEnd");
}
boolean avail = ((extension1 != null && isExtensionAvailable(extension1)) ||
(extension2 != null && isExtensionAvailable(extension2)));
if (!avail) {
if (!enabled)
return;
throw new GLException("Required extensions not available to call this function");
}
int[] val = new int[1];
glGetIntegerv(state, val, 0);
if (enabled) {
if (val[0] == 0) {
throw new GLException(kind + " must be enabled to call this method");
}
} else {
if (val[0] != 0) {
throw new GLException(kind + " must be disabled to call this method");
}
}
}
private void checkUnpackPBODisabled() {
checkBufferObject("GL_ARB_pixel_buffer_object",
"GL_EXT_pixel_buffer_object",
false,
GL.GL_PIXEL_UNPACK_BUFFER_BINDING_ARB,
"unpack pixel_buffer_object");
}
private void checkUnpackPBOEnabled() {
checkBufferObject("GL_ARB_pixel_buffer_object",
"GL_EXT_pixel_buffer_object",
true,
GL.GL_PIXEL_UNPACK_BUFFER_BINDING_ARB,
"unpack pixel_buffer_object");
}
private void checkPackPBODisabled() {
checkBufferObject("GL_ARB_pixel_buffer_object",
"GL_EXT_pixel_buffer_object",
false,
GL.GL_PIXEL_PACK_BUFFER_BINDING_ARB,
"pack pixel_buffer_object");
}
private void checkPackPBOEnabled() {
checkBufferObject("GL_ARB_pixel_buffer_object",
"GL_EXT_pixel_buffer_object",
true,
GL.GL_PIXEL_PACK_BUFFER_BINDING_ARB,
"pack pixel_buffer_object");
}
private void checkArrayVBODisabled() {
checkBufferObject("GL_VERSION_1_5",
"GL_ARB_vertex_buffer_object",
false,
GL.GL_ARRAY_BUFFER_BINDING,
"array vertex_buffer_object");
}
private void checkArrayVBOEnabled() {
checkBufferObject("GL_VERSION_1_5",
"GL_ARB_vertex_buffer_object",
true,
GL.GL_ARRAY_BUFFER_BINDING,
"array vertex_buffer_object");
}
private void checkElementVBODisabled() {
checkBufferObject("GL_VERSION_1_5",
"GL_ARB_vertex_buffer_object",
false,
GL.GL_ELEMENT_ARRAY_BUFFER_BINDING,
"element vertex_buffer_object");
}
private void checkElementVBOEnabled() {
checkBufferObject("GL_VERSION_1_5",
"GL_ARB_vertex_buffer_object",
true,
GL.GL_ELEMENT_ARRAY_BUFFER_BINDING,
"element vertex_buffer_object");
}
// 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_ = _context.getGLProcAddressTable()._addressof_glMapBuffer;
if (__addr_ == 0) {
throw new GLException("Method \"glMapBuffer\" not available");
}
int[] sz = new int[1];
glGetBufferParameteriv(target, GL_BUFFER_SIZE_ARB, sz, 0);
long addr;
addr = dispatch_glMapBuffer(target, access, __addr_);
if (addr == 0 || sz[0] == 0) {
return null;
}
ARBVBOKey key = new ARBVBOKey(addr, sz[0]);
ByteBuffer _res = (ByteBuffer) arbVBOCache.get(key);
if (_res == null) {
_res = InternalBufferUtils.newDirectByteBuffer(addr, sz[0]);
_res.order(ByteOrder.nativeOrder());
arbVBOCache.put(key, _res);
}
return _res;
}
/** Entry point to C language function: <br> <code> LPVOID glMapBufferARB(GLenum target, GLenum access); </code> */
public java.nio.ByteBuffer glMapBufferARB(int target, int access) {
final long __addr_ = _context.getGLProcAddressTable()._addressof_glMapBufferARB;
if (__addr_ == 0) {
throw new GLException("Method \"glMapBufferARB\" not available");
}
int[] sz = new int[1];
glGetBufferParameterivARB(target, GL_BUFFER_SIZE_ARB, sz, 0);
long addr;
addr = dispatch_glMapBufferARB(target, access, __addr_);
if (addr == 0 || sz[0] == 0) {
return null;
}
ARBVBOKey key = new ARBVBOKey(addr, sz[0]);
ByteBuffer _res = (ByteBuffer) arbVBOCache.get(key);
if (_res == null) {
_res = InternalBufferUtils.newDirectByteBuffer(addr, sz[0]);
_res.order(ByteOrder.nativeOrder());
arbVBOCache.put(key, _res);
}
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);
/** Encapsulates function pointer for OpenGL function <br>: <code> LPVOID glMapBufferARB(GLenum target, GLenum access); </code> */
native private long dispatch_glMapBufferARB(int target, int access, long glProcAddress);
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