141 lines
4.7 KiB
Java
141 lines
4.7 KiB
Java
/*
|
|
* Copyright (c) 2002-2004 LWJGL Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* * Neither the name of 'LWJGL' nor the names of
|
|
* its contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
package org.lwjgl.opengl;
|
|
|
|
import java.nio.IntBuffer;
|
|
|
|
/** Track Vertex Buffer Objects by context. */
|
|
final class StateTracker {
|
|
private final StateStack vbo_array_stack;
|
|
private final StateStack vbo_element_stack;
|
|
|
|
private final StateStack pbo_pack_stack;
|
|
private final StateStack pbo_unpack_stack;
|
|
|
|
private final ReferencesStack references_stack;
|
|
|
|
private final StateStack attrib_stack;
|
|
|
|
StateTracker() {
|
|
int stack_size = Math.max(1, Util.glGetInteger(GL11.GL_MAX_CLIENT_ATTRIB_STACK_DEPTH));
|
|
|
|
vbo_array_stack = new StateStack(stack_size, 0);
|
|
vbo_element_stack = new StateStack(stack_size, 0);
|
|
|
|
pbo_pack_stack = new StateStack(stack_size, 0);
|
|
pbo_unpack_stack = new StateStack(stack_size, 0);
|
|
|
|
references_stack = new ReferencesStack(stack_size);
|
|
|
|
attrib_stack = new StateStack(stack_size, 0);
|
|
}
|
|
|
|
static void popAttrib() {
|
|
if ((getClientAttribStack().popState() & GL11.GL_CLIENT_VERTEX_ARRAY_BIT) != 0) {
|
|
getVBOArrayStack().popState();
|
|
getVBOElementStack().popState();
|
|
getPBOPackStack().popState();
|
|
getPBOUnpackStack().popState();
|
|
getReferencesStack().popState();
|
|
}
|
|
}
|
|
|
|
static void pushAttrib(int mask) {
|
|
getClientAttribStack().pushState();
|
|
getClientAttribStack().setState(mask);
|
|
if ((mask & GL11.GL_CLIENT_VERTEX_ARRAY_BIT) != 0) {
|
|
getVBOArrayStack().pushState();
|
|
getVBOElementStack().pushState();
|
|
getPBOPackStack().pushState();
|
|
getPBOUnpackStack().pushState();
|
|
getReferencesStack().pushState();
|
|
}
|
|
}
|
|
|
|
static void deleteBuffers(IntBuffer buffers) {
|
|
for (int i = buffers.position(); i < buffers.limit(); i++) {
|
|
int buffer_handle = buffers.get(i);
|
|
if (getVBOArrayStack().getState() == buffer_handle)
|
|
getVBOArrayStack().setState(0);
|
|
if (getVBOElementStack().getState() == buffer_handle)
|
|
getVBOElementStack().setState(0);
|
|
if (getPBOPackStack().getState() == buffer_handle)
|
|
getPBOPackStack().setState(0);
|
|
if (getPBOUnpackStack().getState() == buffer_handle)
|
|
getPBOUnpackStack().setState(0);
|
|
}
|
|
}
|
|
|
|
static void bindBuffer(int target, int buffer) {
|
|
switch ( target ) {
|
|
case ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB:
|
|
getVBOArrayStack().setState(buffer);
|
|
break;
|
|
case ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB:
|
|
getVBOElementStack().setState(buffer);
|
|
break;
|
|
case ARBPixelBufferObject.GL_PIXEL_PACK_BUFFER_ARB:
|
|
getPBOPackStack().setState(buffer);
|
|
break;
|
|
case ARBPixelBufferObject.GL_PIXEL_UNPACK_BUFFER_ARB:
|
|
getPBOUnpackStack().setState(buffer);
|
|
break;
|
|
default:
|
|
throw new IllegalArgumentException("Unsupported VBO target " + target);
|
|
}
|
|
}
|
|
|
|
static StateStack getVBOArrayStack() {
|
|
return GLContext.getCapabilities().tracker.vbo_array_stack;
|
|
}
|
|
|
|
static StateStack getVBOElementStack() {
|
|
return GLContext.getCapabilities().tracker.vbo_element_stack;
|
|
}
|
|
|
|
static StateStack getPBOPackStack() {
|
|
return GLContext.getCapabilities().tracker.pbo_pack_stack;
|
|
}
|
|
|
|
static StateStack getPBOUnpackStack() {
|
|
return GLContext.getCapabilities().tracker.pbo_unpack_stack;
|
|
}
|
|
|
|
static ReferencesStack getReferencesStack() {
|
|
return GLContext.getCapabilities().tracker.references_stack;
|
|
}
|
|
|
|
private static StateStack getClientAttribStack() {
|
|
return GLContext.getCapabilities().tracker.attrib_stack;
|
|
}
|
|
}
|