/*
 * XGL
 *
 * Copyright (C) 2014 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "loader_platform.h"
#include "xgl_dispatch_table_helper.h"
#include "xgl_generic_intercept_proc_helper.h"
#include "xgl_struct_string_helper.h"
#include "xgl_struct_graphviz_helper.h"
#include "draw_state.h"
#include "layers_config.h"

static XGL_LAYER_DISPATCH_TABLE nextTable;
static XGL_BASE_LAYER_OBJECT *pCurObj;
static LOADER_PLATFORM_THREAD_ONCE_DECLARATION(g_initOnce);
static int globalLockInitialized = 0;
static loader_platform_thread_mutex globalLock;

// Ptr to LL of dbg functions
static XGL_LAYER_DBG_FUNCTION_NODE *g_pDbgFunctionHead = NULL;
static XGL_LAYER_DBG_REPORT_LEVEL g_reportingLevel = XGL_DBG_LAYER_LEVEL_INFO;
static XGL_LAYER_DBG_ACTION g_debugAction = XGL_DBG_LAYER_ACTION_LOG_MSG;
static FILE *g_logFile = NULL;

// Utility function to handle reporting
//  If callbacks are enabled, use them, otherwise use printf
static void layerCbMsg(XGL_DBG_MSG_TYPE msgType,
    XGL_VALIDATION_LEVEL validationLevel,
    XGL_BASE_OBJECT      srcObject,
    size_t               location,
    int32_t              msgCode,
    const char*          pLayerPrefix,
    const char*          pMsg)
{
    if (g_debugAction & (XGL_DBG_LAYER_ACTION_LOG_MSG | XGL_DBG_LAYER_ACTION_CALLBACK)) {
        XGL_LAYER_DBG_FUNCTION_NODE *pTrav = g_pDbgFunctionHead;
        switch (msgType) {
            case XGL_DBG_MSG_ERROR:
                if (g_reportingLevel <= XGL_DBG_LAYER_LEVEL_ERROR) {
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
                        fprintf(g_logFile, "{%s}ERROR : %s\n", pLayerPrefix, pMsg);
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_CALLBACK)
                        while (pTrav) {
				            pTrav->pfnMsgCallback(msgType, validationLevel, srcObject, location, msgCode, pMsg, pTrav->pUserData);
                            pTrav = pTrav->pNext;
                        }
                }
                break;
            case XGL_DBG_MSG_WARNING:
                if (g_reportingLevel <= XGL_DBG_LAYER_LEVEL_WARN) {
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
                        fprintf(g_logFile, "{%s}WARN : %s\n", pLayerPrefix, pMsg);
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_CALLBACK)
                        while (pTrav) {
				            pTrav->pfnMsgCallback(msgType, validationLevel, srcObject, location, msgCode, pMsg, pTrav->pUserData);
                            pTrav = pTrav->pNext;
                        }
                }
                break;
            case XGL_DBG_MSG_PERF_WARNING:
                if (g_reportingLevel <= XGL_DBG_LAYER_LEVEL_PERF_WARN) {
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
                        fprintf(g_logFile, "{%s}PERF_WARN : %s\n", pLayerPrefix, pMsg);
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_CALLBACK)
                        while (pTrav) {
				            pTrav->pfnMsgCallback(msgType, validationLevel, srcObject, location, msgCode, pMsg, pTrav->pUserData);
                            pTrav = pTrav->pNext;
                        }
                }
                break;
            default:
                if (g_reportingLevel <= XGL_DBG_LAYER_LEVEL_INFO) {
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
                        fprintf(g_logFile, "{%s}INFO : %s\n", pLayerPrefix, pMsg);
                    if (g_debugAction & XGL_DBG_LAYER_ACTION_CALLBACK)
                        while (pTrav) {
				            pTrav->pfnMsgCallback(msgType, validationLevel, srcObject, location, msgCode, pMsg, pTrav->pUserData);
                            pTrav = pTrav->pNext;
                        }
                }
                break;
        }
    }
}
// Return the size of the underlying struct based on struct type
static size_t sTypeStructSize(XGL_STRUCTURE_TYPE sType)
{
    switch (sType)
    {
        case XGL_STRUCTURE_TYPE_APPLICATION_INFO:
            return sizeof(XGL_APPLICATION_INFO);
        case XGL_STRUCTURE_TYPE_DEVICE_CREATE_INFO:
            return sizeof(XGL_DEVICE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_MEMORY_ALLOC_INFO:
            return sizeof(XGL_MEMORY_ALLOC_INFO);
        case XGL_STRUCTURE_TYPE_MEMORY_OPEN_INFO:
            return sizeof(XGL_MEMORY_OPEN_INFO);
        case XGL_STRUCTURE_TYPE_PEER_MEMORY_OPEN_INFO:
            return sizeof(XGL_PEER_MEMORY_OPEN_INFO);
        case XGL_STRUCTURE_TYPE_BUFFER_VIEW_ATTACH_INFO:
            return sizeof(XGL_BUFFER_VIEW_ATTACH_INFO);
        case XGL_STRUCTURE_TYPE_IMAGE_VIEW_ATTACH_INFO:
            return sizeof(XGL_IMAGE_VIEW_ATTACH_INFO);
        case XGL_STRUCTURE_TYPE_EVENT_WAIT_INFO:
            return sizeof(XGL_EVENT_WAIT_INFO);
        case XGL_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO:
            return sizeof(XGL_IMAGE_VIEW_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_COLOR_ATTACHMENT_VIEW_CREATE_INFO:
            return sizeof(XGL_COLOR_ATTACHMENT_VIEW_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DEPTH_STENCIL_VIEW_CREATE_INFO:
            return sizeof(XGL_DEPTH_STENCIL_VIEW_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_SHADER_CREATE_INFO:
            return sizeof(XGL_SHADER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO:
            return sizeof(XGL_COMPUTE_PIPELINE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_SAMPLER_CREATE_INFO:
            return sizeof(XGL_SAMPLER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO:
            return sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_VP_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_VP_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_RS_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_RS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_CB_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_CB_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_DS_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_DS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_CMD_BUFFER_CREATE_INFO:
            return sizeof(XGL_CMD_BUFFER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_EVENT_CREATE_INFO:
            return sizeof(XGL_EVENT_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_FENCE_CREATE_INFO:
            return sizeof(XGL_FENCE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_QUEUE_SEMAPHORE_CREATE_INFO:
            return sizeof(XGL_QUEUE_SEMAPHORE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_QUEUE_SEMAPHORE_OPEN_INFO:
            return sizeof(XGL_QUEUE_SEMAPHORE_OPEN_INFO);
        case XGL_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO:
            return sizeof(XGL_QUERY_POOL_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_SHADER_STAGE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO:
            return sizeof(XGL_GRAPHICS_PIPELINE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_CREATE_INFO:
            return sizeof(XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_IA_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_IA_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_TESS_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_TESS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_VP_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_VP_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_RS_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_RS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_MS_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_MS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_CB_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_CB_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_DS_STATE_CREATE_INFO:
            return sizeof(XGL_PIPELINE_DS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_IMAGE_CREATE_INFO:
            return sizeof(XGL_IMAGE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_BUFFER_CREATE_INFO:
            return sizeof(XGL_BUFFER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO:
            return sizeof(XGL_BUFFER_VIEW_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO:
            return sizeof(XGL_FRAMEBUFFER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_CMD_BUFFER_BEGIN_INFO:
            return sizeof(XGL_CMD_BUFFER_BEGIN_INFO);
        case XGL_STRUCTURE_TYPE_CMD_BUFFER_GRAPHICS_BEGIN_INFO:
            return sizeof(XGL_CMD_BUFFER_GRAPHICS_BEGIN_INFO);
        case XGL_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO:
            return sizeof(XGL_RENDER_PASS_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_LAYER_CREATE_INFO:
            return sizeof(XGL_LAYER_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_PIPELINE_BARRIER:
            return sizeof(XGL_PIPELINE_BARRIER);
        case XGL_STRUCTURE_TYPE_MEMORY_BARRIER:
            return sizeof(XGL_MEMORY_BARRIER);
        case XGL_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER:
            return sizeof(XGL_BUFFER_MEMORY_BARRIER);
        case XGL_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER:
            return sizeof(XGL_IMAGE_MEMORY_BARRIER);
        case XGL_STRUCTURE_TYPE_DESCRIPTOR_REGION_CREATE_INFO:
            return sizeof(XGL_DESCRIPTOR_REGION_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            return sizeof(XGL_UPDATE_SAMPLERS);
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            return sizeof(XGL_UPDATE_SAMPLER_TEXTURES);
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            return sizeof(XGL_UPDATE_IMAGES);
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            return sizeof(XGL_UPDATE_BUFFERS);
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            return sizeof(XGL_UPDATE_AS_COPY);
        case XGL_STRUCTURE_TYPE_MEMORY_ALLOC_BUFFER_INFO:
            return sizeof(XGL_MEMORY_ALLOC_BUFFER_INFO);
        case XGL_STRUCTURE_TYPE_MEMORY_ALLOC_IMAGE_INFO:
            return sizeof(XGL_MEMORY_ALLOC_IMAGE_INFO);
        default:
            return 0;
    }
}
// Return the size of the underlying struct based on sType
static size_t dynStateCreateInfoSize(XGL_STRUCTURE_TYPE sType)
{
    switch (sType)
    {
        case XGL_STRUCTURE_TYPE_DYNAMIC_VP_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_VP_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_RS_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_RS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_DS_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_DS_STATE_CREATE_INFO);
        case XGL_STRUCTURE_TYPE_DYNAMIC_CB_STATE_CREATE_INFO:
            return sizeof(XGL_DYNAMIC_CB_STATE_CREATE_INFO);
        default:
            return 0;
    }
}
// Block of code at start here for managing/tracking Pipeline state that this layer cares about
// Just track 2 shaders for now
#define XGL_NUM_GRAPHICS_SHADERS XGL_SHADER_STAGE_COMPUTE
#define MAX_SLOTS 2048

static uint64_t drawCount[NUM_DRAW_TYPES] = {0, 0, 0, 0};

// TODO : Should be tracking lastBound per cmdBuffer and when draws occur, report based on that cmd buffer lastBound
//   Then need to synchronize the accesses based on cmd buffer so that if I'm reading state on one cmd buffer, updates
//   to that same cmd buffer by separate thread are not changing state from underneath us
static PIPELINE_NODE* g_pPipelineHead = NULL;
static SAMPLER_NODE*  g_pSamplerHead = NULL;
static IMAGE_NODE*    g_pImageHead = NULL;
static BUFFER_NODE*   g_pBufferHead = NULL;
static XGL_PIPELINE lastBoundPipeline = NULL;
#define MAX_BINDING 0xFFFFFFFF
static uint32_t lastVtxBinding = MAX_BINDING;
static uint32_t lastIdxBinding = MAX_BINDING;

static DYNAMIC_STATE_NODE* g_pDynamicStateHead[XGL_NUM_STATE_BIND_POINT] = {0};
static DYNAMIC_STATE_NODE* g_pLastBoundDynamicState[XGL_NUM_STATE_BIND_POINT] = {0};

static void insertDynamicState(const XGL_DYNAMIC_STATE_OBJECT state, const GENERIC_HEADER* pCreateInfo, XGL_STATE_BIND_POINT bindPoint)
{
    loader_platform_thread_lock_mutex(&globalLock);
    // Insert new node at head of appropriate LL
    DYNAMIC_STATE_NODE* pStateNode = (DYNAMIC_STATE_NODE*)malloc(sizeof(DYNAMIC_STATE_NODE));
    pStateNode->pNext = g_pDynamicStateHead[bindPoint];
    g_pDynamicStateHead[bindPoint] = pStateNode;
    pStateNode->stateObj = state;
    pStateNode->pCreateInfo = (GENERIC_HEADER*)malloc(dynStateCreateInfoSize(pCreateInfo->sType));
    memcpy(pStateNode->pCreateInfo, pCreateInfo, dynStateCreateInfoSize(pCreateInfo->sType));
    loader_platform_thread_unlock_mutex(&globalLock);
}
// Set the last bound dynamic state of given type
// TODO : Need to track this per cmdBuffer and correlate cmdBuffer for Draw w/ last bound for that cmdBuffer?
static void setLastBoundDynamicState(const XGL_DYNAMIC_STATE_OBJECT state, const XGL_STATE_BIND_POINT sType)
{
    loader_platform_thread_lock_mutex(&globalLock);
    DYNAMIC_STATE_NODE* pTrav = g_pDynamicStateHead[sType];
    while (pTrav && (state != pTrav->stateObj)) {
        pTrav = pTrav->pNext;
    }
    if (!pTrav) {
        char str[1024];
        sprintf(str, "Unable to find dynamic state object %p, was it ever created?", (void*)state);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, state, 0, DRAWSTATE_INVALID_DYNAMIC_STATE_OBJECT, "DS", str);
    }
    g_pLastBoundDynamicState[sType] = pTrav;
    loader_platform_thread_unlock_mutex(&globalLock);
}
// Print the last bound dynamic state
static void printDynamicState()
{
    loader_platform_thread_lock_mutex(&globalLock);
    char str[1024];
    for (uint32_t i = 0; i < XGL_NUM_STATE_BIND_POINT; i++) {
        if (g_pLastBoundDynamicState[i]) {
            sprintf(str, "Reporting CreateInfo for currently bound %s object %p", string_XGL_STATE_BIND_POINT(i), g_pLastBoundDynamicState[i]->stateObj);
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, g_pLastBoundDynamicState[i]->stateObj, 0, DRAWSTATE_NONE, "DS", str);
            switch (g_pLastBoundDynamicState[i]->pCreateInfo->sType)
            {
                case XGL_STATE_BIND_VIEWPORT:
                    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, g_pLastBoundDynamicState[i]->stateObj, 0, DRAWSTATE_NONE, "DS", xgl_print_xgl_dynamic_vp_state_create_info((XGL_DYNAMIC_VP_STATE_CREATE_INFO*)g_pLastBoundDynamicState[i]->pCreateInfo, "  "));
                    break;
                default:
                    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, g_pLastBoundDynamicState[i]->stateObj, 0, DRAWSTATE_NONE, "DS", dynamic_display(g_pLastBoundDynamicState[i]->pCreateInfo, "  "));
                    break;
            }
        }
        else {
            sprintf(str, "No dynamic state of type %s bound", string_XGL_STATE_BIND_POINT(i));
            layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", str);
        }
    }
    loader_platform_thread_unlock_mutex(&globalLock);
}
// Retrieve pipeline node ptr for given pipeline object
static PIPELINE_NODE *getPipeline(XGL_PIPELINE pipeline)
{
    loader_platform_thread_lock_mutex(&globalLock);
    PIPELINE_NODE *pTrav = g_pPipelineHead;
    while (pTrav) {
        if (pTrav->pipeline == pipeline) {
            loader_platform_thread_unlock_mutex(&globalLock);
            return pTrav;
        }
        pTrav = pTrav->pNext;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return NULL;
}

// For given sampler, return a ptr to its Create Info struct, or NULL if sampler not found
static XGL_SAMPLER_CREATE_INFO* getSamplerCreateInfo(const XGL_SAMPLER sampler)
{
    loader_platform_thread_lock_mutex(&globalLock);
    SAMPLER_NODE *pTrav = g_pSamplerHead;
    while (pTrav) {
        if (sampler == pTrav->sampler) {
            loader_platform_thread_unlock_mutex(&globalLock);
            return &pTrav->createInfo;
        }
        pTrav = pTrav->pNext;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return NULL;
}

// Init the pipeline mapping info based on pipeline create info LL tree
//  Threading note : Calls to this function should wrapped in mutex
static void initPipeline(PIPELINE_NODE *pPipeline, const XGL_GRAPHICS_PIPELINE_CREATE_INFO* pCreateInfo)
{
    // First init create info, we'll shadow the structs as we go down the tree
    pPipeline->pCreateTree = (XGL_GRAPHICS_PIPELINE_CREATE_INFO*)malloc(sizeof(XGL_GRAPHICS_PIPELINE_CREATE_INFO));
    memcpy(pPipeline->pCreateTree, pCreateInfo, sizeof(XGL_GRAPHICS_PIPELINE_CREATE_INFO));
    GENERIC_HEADER *pShadowTrav = (GENERIC_HEADER*)pPipeline->pCreateTree;
    GENERIC_HEADER *pTrav = (GENERIC_HEADER*)pCreateInfo->pNext;
    while (pTrav) {
        // Shadow the struct
        pShadowTrav->pNext = (GENERIC_HEADER*)malloc(sTypeStructSize(pTrav->sType));
        // Typically pNext is const so have to cast to avoid warning when we modify it here
        memcpy((void*)pShadowTrav->pNext, pTrav, sTypeStructSize(pTrav->sType));
        pShadowTrav = (GENERIC_HEADER*)pShadowTrav->pNext;
        // Special copy of Vtx info as it has embedded array
        if (XGL_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_CREATE_INFO == pTrav->sType) {
            XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO *pVICI = (XGL_PIPELINE_VERTEX_INPUT_CREATE_INFO*)pTrav;
            pPipeline->vtxBindingCount = pVICI->bindingCount;
            uint32_t allocSize = pPipeline->vtxBindingCount * sizeof(XGL_VERTEX_INPUT_BINDING_DESCRIPTION);
            pPipeline->pVertexBindingDescriptions = (XGL_VERTEX_INPUT_BINDING_DESCRIPTION*)malloc(allocSize);
            memcpy(pPipeline->pVertexBindingDescriptions, pVICI->pVertexAttributeDescriptions, allocSize);
            pPipeline->vtxAttributeCount = pVICI->attributeCount;
            allocSize = pPipeline->vtxAttributeCount * sizeof(XGL_VERTEX_INPUT_ATTRIBUTE_DESCRIPTION);
            pPipeline->pVertexAttributeDescriptions = (XGL_VERTEX_INPUT_ATTRIBUTE_DESCRIPTION*)malloc(allocSize);
            memcpy(pPipeline->pVertexAttributeDescriptions, pVICI->pVertexAttributeDescriptions, allocSize);
        }
        pTrav = (GENERIC_HEADER*)pTrav->pNext;
    }
}

// Block of code at start here specifically for managing/tracking DSs

// ptr to HEAD of LL of DS Regions
static REGION_NODE* g_pRegionHead = NULL;
// ptr to HEAD of LL of top-level Layouts
static LAYOUT_NODE* g_pLayoutHead = NULL;
// Last DS that was bound, and slotOffset for the binding
static XGL_DESCRIPTOR_SET g_lastBoundDS = NULL;
static uint32_t lastBoundSlotOffset = 0;

// Return Region node ptr for specified region or else NULL
static REGION_NODE* getRegionNode(XGL_DESCRIPTOR_REGION region)
{
    pthread_mutex_lock(&globalLock);
    REGION_NODE* pTrav = g_pRegionHead;
    while (pTrav) {
        if (pTrav->region == region) {
            pthread_mutex_unlock(&globalLock);
            return pTrav;
        }
        pTrav = pTrav->pNext;
    }
    pthread_mutex_unlock(&globalLock);
    return NULL;
}

// Return Set node ptr for specified set or else NULL
static SET_NODE* getSetNode(XGL_DESCRIPTOR_SET set)
{
    pthread_mutex_lock(&globalLock);
    REGION_NODE* pTrav = g_pRegionHead;
    while (pTrav) {
        SET_NODE* pSet = pTrav->pSets;
        while (pSet) {
            if (pSet->set == set) {
                pthread_mutex_unlock(&globalLock);
                return pSet;
            }
            pSet = pSet->pNext;
        }
        pTrav = pTrav->pNext;
    }
    pthread_mutex_unlock(&globalLock);
    return NULL;
}

static LAYOUT_NODE* getLayoutNode(XGL_DESCRIPTOR_SET_LAYOUT layout) {
    pthread_mutex_lock(&globalLock);
    LAYOUT_NODE* pTrav = g_pLayoutHead;
    while (pTrav) {
        if (pTrav->layout == layout) {
            pthread_mutex_unlock(&globalLock);
            return pTrav;
        }
        pTrav = pTrav->pNext;
    }
    pthread_mutex_unlock(&globalLock);
    return NULL;
}

static uint32_t getUpdateIndex(GENERIC_HEADER* pUpdateStruct)
{
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            return ((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            return ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            return ((XGL_UPDATE_IMAGES*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            return ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->index;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            return ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorIndex;
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
}

static uint32_t getUpdateUpperBound(GENERIC_HEADER* pUpdateStruct)
{
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            return (((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->count + ((XGL_UPDATE_SAMPLERS*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            return (((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->count + ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            return (((XGL_UPDATE_IMAGES*)pUpdateStruct)->count + ((XGL_UPDATE_IMAGES*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            return (((XGL_UPDATE_BUFFERS*)pUpdateStruct)->count + ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->index);
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            // TODO : Need to understand this case better and make sure code is correct
            return (((XGL_UPDATE_AS_COPY*)pUpdateStruct)->count + ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorIndex);
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
}

// Verify that the descriptor type in the update struct matches what's expected by the layout
static bool32_t validateUpdateType(GENERIC_HEADER* pUpdateStruct, XGL_DESCRIPTOR_TYPE type)
{
    // First get actual type of update
    XGL_DESCRIPTOR_TYPE actualType;
    switch (pUpdateStruct->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            actualType = XGL_DESCRIPTOR_TYPE_SAMPLER;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            actualType = XGL_DESCRIPTOR_TYPE_SAMPLER_TEXTURE;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            actualType = ((XGL_UPDATE_IMAGES*)pUpdateStruct)->descriptorType;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            actualType = ((XGL_UPDATE_BUFFERS*)pUpdateStruct)->descriptorType;
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            actualType = ((XGL_UPDATE_AS_COPY*)pUpdateStruct)->descriptorType;
            break;
        default:
            // TODO : Flag specific error for this case
            return 0;
    }
    if (actualType == type)
        return 1;
    return 0;
}

// Verify that update region for this update does not exceed max layout index for this type
static bool32_t validateUpdateSize(GENERIC_HEADER* pUpdateStruct, uint32_t layoutIdx)
{
    if (getUpdateUpperBound(pUpdateStruct) > layoutIdx)
        return 0;
    return 1;
}

// Determine the update type, allocate a new struct of that type, shadow the given pUpdate
//   struct into the new struct and return ptr to shadow struct cast as GENERIC_HEADER
static GENERIC_HEADER* shadowUpdateNode(GENERIC_HEADER* pUpdate)
{
    GENERIC_HEADER* pNewNode = NULL;
    uint32_t array_size = 0;
    switch (pUpdate->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_SAMPLERS));
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_SAMPLERS));
            array_size = sizeof(XGL_SAMPLER) * ((XGL_UPDATE_SAMPLERS*)pNewNode)->count;
            ((XGL_UPDATE_SAMPLERS*)pNewNode)->pSamplers = (XGL_SAMPLER*)malloc(array_size);
            memcpy((XGL_SAMPLER*)((XGL_UPDATE_SAMPLERS*)pNewNode)->pSamplers, ((XGL_UPDATE_SAMPLERS*)pUpdate)->pSamplers, array_size);
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_SAMPLER_TEXTURES));
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_SAMPLER_TEXTURES));
            array_size = sizeof(XGL_SAMPLER_IMAGE_VIEW_INFO) * ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->count;
            ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews = (XGL_SAMPLER_IMAGE_VIEW_INFO*)malloc(array_size);
            for (uint32_t i = 0; i < ((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->count; i++) {
                memcpy((XGL_SAMPLER_IMAGE_VIEW_INFO*)&((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews[i], &((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews[i], sizeof(XGL_SAMPLER_IMAGE_VIEW_INFO));
                ((XGL_SAMPLER_IMAGE_VIEW_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews)[i].pImageView = malloc(sizeof(XGL_IMAGE_VIEW_ATTACH_INFO));
                memcpy((XGL_IMAGE_VIEW_ATTACH_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pNewNode)->pSamplerImageViews[i].pImageView, ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews[i].pImageView, sizeof(XGL_IMAGE_VIEW_ATTACH_INFO));
            }
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_IMAGES));
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_IMAGES));
            array_size = sizeof(XGL_IMAGE_VIEW_ATTACH_INFO) * ((XGL_UPDATE_IMAGES*)pNewNode)->count;
            ((XGL_UPDATE_IMAGES*)pNewNode)->pImageViews = (XGL_IMAGE_VIEW_ATTACH_INFO*)malloc(array_size);
            memcpy((XGL_IMAGE_VIEW_ATTACH_INFO*)((XGL_UPDATE_IMAGES*)pNewNode)->pImageViews, ((XGL_UPDATE_IMAGES*)pUpdate)->pImageViews, array_size);
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_BUFFERS));
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_BUFFERS));
            array_size = sizeof(XGL_BUFFER_VIEW_ATTACH_INFO) * ((XGL_UPDATE_BUFFERS*)pNewNode)->count;
            ((XGL_UPDATE_BUFFERS*)pNewNode)->pBufferViews = (XGL_BUFFER_VIEW_ATTACH_INFO*)malloc(array_size);
            memcpy((XGL_BUFFER_VIEW_ATTACH_INFO*)((XGL_UPDATE_BUFFERS*)pNewNode)->pBufferViews, ((XGL_UPDATE_BUFFERS*)pUpdate)->pBufferViews, array_size);
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            pNewNode = (GENERIC_HEADER*)malloc(sizeof(XGL_UPDATE_AS_COPY));
            memcpy(pNewNode, pUpdate, sizeof(XGL_UPDATE_AS_COPY));
        default:
            // TODO : Flag specific error for this case
            return NULL;
    }
    // Make sure that pNext for the shadow copy is NULL
    pNewNode->pNext = NULL;
    return pNewNode;
}
// For given ds, update it's mapping based on pUpdateChain linked-list
static void dsUpdate(XGL_DESCRIPTOR_SET ds, GENERIC_HEADER* pUpdateChain)
{
    SET_NODE* pSet = getSetNode(ds);
    LAYOUT_NODE* pLayout = pSet->pLayouts;
    XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO* pCIList = NULL;
    uint32_t layoutIdx = pCIList->count;
    GENERIC_HEADER* pUpdates = pUpdateChain;
    // Perform all updates
    while (pUpdates) {
        pCIList = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pLayout->pCreateInfoList;
        // For each update first find the layout section that it overlaps
        while (layoutIdx < getUpdateIndex(pUpdates)) {
            pCIList = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)pCIList->pNext;
            layoutIdx += pCIList->count;
        }
        // Now verify that update is of the right type
        if (!validateUpdateType(pUpdates, pCIList->descriptorType)) {
            char str[1024];
            sprintf(str, "Descriptor update type of %s does not match overlapping layout type of %s!", string_XGL_STRUCTURE_TYPE(pUpdates->sType), string_XGL_DESCRIPTOR_TYPE(pCIList->descriptorType));
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_DESCRIPTOR_TYPE_MISMATCH, "DS", str);
        }
        else { // TODO : should we skip update on a type mismatch or force it?
            // Next verify that update is correct size
            if (!validateUpdateSize(pUpdates, layoutIdx)) {
                char str[1024];
                sprintf(str, "Descriptor update type of %s is out of bounds for matching layout w/ CI:\n%s!", string_XGL_STRUCTURE_TYPE(pUpdates->sType), xgl_print_xgl_descriptor_set_layout_create_info(pCIList, "{DS}    "));
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_DESCRIPTOR_UPDATE_OUT_OF_BOUNDS, "DS", str);
            }
            else {
                // Finally perform the update
                // TODO : Info message that update successful
                GENERIC_HEADER* pUpdateInsert = pSet->pUpdateStructs;
                GENERIC_HEADER* pPrev = pUpdateInsert;
                // Create new update struct for this set's shadow copy
                GENERIC_HEADER* pNewNode = shadowUpdateNode(pUpdates);
                if (NULL == pNewNode) {
                    char str[1024];
                    sprintf(str, "Out of memory while attempting to allocate UPDATE struct in xglUpdateDescriptors()");
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, ds, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
                }
                else {
                    if (!pUpdateInsert) {
                        pSet->pUpdateStructs = pNewNode;
                    }
                    else {
                        // Find either the existing, matching region, or end of list for initial update chain
                        // TODO : Need to validate this, I suspect there are holes in my algorithm
                        uint32_t totalIndex = 0;
                        while (pUpdateInsert && (getUpdateIndex(pUpdates) != totalIndex)) {
                            totalIndex = getUpdateUpperBound(pUpdates);
                            pPrev = pUpdateInsert;
                            pUpdateInsert = (GENERIC_HEADER*)pUpdateInsert->pNext;
                        }
                        pPrev->pNext = pNewNode;
                    }
                }
            }
        }
        pUpdates = (GENERIC_HEADER*)pUpdates->pNext;
    }
}
// Free a shadowed update node
static void freeShadowUpdateNode(GENERIC_HEADER* pUpdate)
{
    switch (pUpdate->sType)
    {
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLERS:
            free((XGL_SAMPLER*)((XGL_UPDATE_SAMPLERS*)pUpdate)->pSamplers);
            free(pUpdate);
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
            for (uint32_t i = 0; i < ((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->count; i++) {
                free((XGL_IMAGE_VIEW_ATTACH_INFO*)(((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews[i].pImageView));
            }
            free((XGL_SAMPLER_IMAGE_VIEW_INFO*)((XGL_UPDATE_SAMPLER_TEXTURES*)pUpdate)->pSamplerImageViews);
            free(pUpdate);
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_IMAGES:
            free((XGL_IMAGE_VIEW_ATTACH_INFO*)((XGL_UPDATE_IMAGES*)pUpdate)->pImageViews);
            free(pUpdate);
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_BUFFERS:
            free((XGL_BUFFER_VIEW_ATTACH_INFO*)((XGL_UPDATE_BUFFERS*)pUpdate)->pBufferViews);
            free(pUpdate);
            break;
        case XGL_STRUCTURE_TYPE_UPDATE_AS_COPY:
            free(pUpdate);
            break;
        default:
            // TODO : Flag specific error for this case
            break;
    }
}
// Currently clearing a set it removing all previous updates to that set
//  TODO : Validate if this is correct clearing behavior
static void clearDescriptorSet(XGL_DESCRIPTOR_SET set)
{
    SET_NODE* pSet = getSetNode(set);
    if (!pSet) {
        // TODO : Return error
    }
    else {
        GENERIC_HEADER* pUpdate = pSet->pUpdateStructs;
        GENERIC_HEADER* pFreeMe = pUpdate;
        while (pUpdate) {
            pFreeMe = pUpdate;
            pUpdate = (GENERIC_HEADER*)pUpdate->pNext;
            freeShadowUpdateNode(pFreeMe);
        }
    }
}

static void clearDescriptorRegion(XGL_DESCRIPTOR_REGION region)
{
    REGION_NODE* pRegion = getRegionNode(region);
    if (!pRegion) {
        char str[1024];
        sprintf(str, "Unable to find region node for region %p specified in xglClearDescriptorRegion() call", (void*)region);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, region, 0, DRAWSTATE_INVALID_REGION, "DS", str);
    }
    else
    {
        // For every set off of this region, clear it
        SET_NODE* pSet = pRegion->pSets;
        while (pSet) {
            clearDescriptorSet(pSet->set);
        }
    }
}
// Return DS Head ptr for specified ds or else NULL
/*
static DS_LL_HEAD* getDS(XGL_DESCRIPTOR_SET ds)
{
    loader_platform_thread_lock_mutex(&globalLock);
    DS_LL_HEAD *pTrav = pDSHead;
    while (pTrav) {
        if (pTrav->dsID == ds) {
            loader_platform_thread_unlock_mutex(&globalLock);
            return pTrav;
        }
        pTrav = pTrav->pNextDS;
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return NULL;
}

// Return XGL_TRUE if DS Exists and is within an xglBeginDescriptorSetUpdate() call sequence, otherwise XGL_FALSE
static bool32_t dsUpdate(XGL_DESCRIPTOR_SET ds)
{
    DS_LL_HEAD *pTrav = getDS(ds);
    if (pTrav)
        return pTrav->updateActive;
    return XGL_FALSE;
}
*/

// Clear specified slotCount DS Slots starting at startSlot
// Return XGL_TRUE if DS exists and is successfully cleared to 0s
/*
static bool32_t clearDS(XGL_DESCRIPTOR_SET descriptorSet, uint32_t startSlot, uint32_t slotCount)
{
    DS_LL_HEAD *pTrav = getDS(descriptorSet);
    loader_platform_thread_lock_mutex(&globalLock);
    if (!pTrav || ((startSlot + slotCount) > pTrav->numSlots)) {
        // TODO : Log more meaningful error here
        loader_platform_thread_unlock_mutex(&globalLock);
        return XGL_FALSE;
    }
    for (uint32_t i = startSlot; i < slotCount; i++) {
        memset((void*)&pTrav->dsSlot[i], 0, sizeof(DS_SLOT));
    }
    loader_platform_thread_unlock_mutex(&globalLock);
    return XGL_TRUE;
}

static void dsSetMapping(DS_SLOT* pSlot, uint32_t mapping)
{
    pSlot->mappingMask   |= mapping;
    pSlot->activeMapping = mapping;
}
// Populate pStr w/ a string noting all of the slot mappings based on mapping flag
static char* noteSlotMapping(uint32_t32 mapping, char *pStr)
{
    if (MAPPING_MEMORY & mapping)
        strcat(pStr, "\n\tMemory View previously mapped");
    if (MAPPING_IMAGE & mapping)
        strcat(pStr, "\n\tImage View previously mapped");
    if (MAPPING_SAMPLER & mapping)
        strcat(pStr, "\n\tSampler previously mapped");
    if (MAPPING_DS & mapping)
        strcat(pStr, "\n\tDESCRIPTOR SET ptr previously mapped");
    return pStr;
}
*/
// Print the last bound Gfx Pipeline
static void printPipeline()
{
    PIPELINE_NODE *pPipeTrav = getPipeline(lastBoundPipeline);
    if (!pPipeTrav) {
        // nothing to print
    }
    else {
        char* pipeStr = xgl_print_xgl_graphics_pipeline_create_info(pPipeTrav->pCreateTree, "{DS}");
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", pipeStr);
    }
}
// Dump subgraph w/ DS info
/*
static void dsDumpDot(FILE* pOutFile)
{
    const int i = 0; // hard-coding to just the first DS index for now
    uint32_t skipUnusedCount = 0; // track consecutive unused slots for minimal reporting
    DS_LL_HEAD *pDS = getDS(lastBoundDS);
    if (pDS) {
        fprintf(pOutFile, "subgraph DS_SLOTS\n{\nlabel=\"DS0 Slots\"\n");
        // First create simple array node as central DS reference point
        fprintf(pOutFile, "\"DS0_MEMORY\" [\nlabel = <<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\"> <TR><TD PORT=\"ds2\">DS0 Memory</TD></TR>");
        uint32_t j;
        char label[1024];
        for (j = 0; j < pDS->numSlots; j++) {
            // Don't draw unused slots
            if (0 != pDS->dsSlot[j].activeMapping)
                fprintf(pOutFile, "<TR><TD PORT=\"slot%u\">slot%u</TD></TR>", j, j);
        }
        fprintf(pOutFile, "</TABLE>>\n];\n");
        // Now tie each slot to its info
        for (j = 0; j < pDS->numSlots; j++) {
            switch (pDS->dsSlot[j].activeMapping)
            {
                case MAPPING_MEMORY:
                    sprintf(label, "MemAttachInfo Slot%u", j);
                    fprintf(pOutFile, "%s", xgl_gv_print_xgl_memory_view_attach_info(&pDS->dsSlot[j].buffView, label));
                    fprintf(pOutFile, "\"DS0_MEMORY\":slot%u -> \"%s\" [];\n", j, label);
                    break;
                case MAPPING_IMAGE:
                    sprintf(label, "ImageAttachInfo Slot%u", j);
                    fprintf(pOutFile, "%s", xgl_gv_print_xgl_image_view_attach_info(&pDS->dsSlot[j].imageView, label));
                    fprintf(pOutFile, "\"DS0_MEMORY\":slot%u -> \"%s\" [];\n", j, label);
                    break;
                case MAPPING_SAMPLER:
                    sprintf(label, "SamplerAttachInfo Slot%u", j);
                    fprintf(pOutFile, "%s", xgl_gv_print_xgl_sampler_create_info(getSamplerCreateInfo(pDS->dsSlot[j].sampler), label));
                    fprintf(pOutFile, "\"DS0_MEMORY\":slot%u -> \"%s\" [];\n", j, label);
                    break;
                default:
                    skipUnusedCount++;
                    break;
            }

        }
        fprintf(pOutFile, "}\n");
    }
}
*/
// Dump a GraphViz dot file showing the pipeline
static void dumpDotFile(char *outFileName)
{
    PIPELINE_NODE *pPipeTrav = getPipeline(lastBoundPipeline);
    if (pPipeTrav) {
        FILE* pOutFile;
        pOutFile = fopen(outFileName, "w");
        fprintf(pOutFile, "digraph g {\ngraph [\nrankdir = \"TB\"\n];\nnode [\nfontsize = \"16\"\nshape = \"plaintext\"\n];\nedge [\n];\n");
        fprintf(pOutFile, "subgraph PipelineStateObject\n{\nlabel=\"Pipeline State Object\"\n");
        fprintf(pOutFile, "%s", xgl_gv_print_xgl_graphics_pipeline_create_info(pPipeTrav->pCreateTree, "PSO HEAD"));
        fprintf(pOutFile, "}\n");
        // TODO : Add dynamic state dump here
        fprintf(pOutFile, "subgraph dynamicState\n{\nlabel=\"Non-Orthogonal XGL State\"\n");
        for (uint32_t i = 0; i < XGL_NUM_STATE_BIND_POINT; i++) {
            if (g_pLastBoundDynamicState[i]) {
                fprintf(pOutFile, "%s", dynamic_gv_display(g_pLastBoundDynamicState[i]->pCreateInfo, string_XGL_STATE_BIND_POINT(g_pLastBoundDynamicState[i]->pCreateInfo->sType)));
            }
        }
        fprintf(pOutFile, "}\n"); // close dynamicState subgraph
        //dsDumpDot(pOutFile);
        fprintf(pOutFile, "}\n"); // close main graph "g"
        fclose(pOutFile);
    }
}
// Synch up currently bound pipeline settings with DS mappings
static void synchDSMapping()
{
    // First verify that we have a bound pipeline
    PIPELINE_NODE *pPipeTrav = getPipeline(lastBoundPipeline);
    char str[1024];
    if (!pPipeTrav) {
        sprintf(str, "Can't find last bound Pipeline %p!", (void*)lastBoundPipeline);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NO_PIPELINE_BOUND, "DS", str);
    }
    else {
        // Synch Descriptor Set Mapping
        //for (uint32_t i = 0; i < XGL_MAX_DESCRIPTOR_SETS; i++) {
/*
            DS_LL_HEAD *pDS;
            if (lastBoundDS) {
                pDS = getDS(lastBoundDS);
                if (!pDS) {
                    sprintf(str, "Can't find last bound DS %p. Did you need to bind DS?", (void*)lastBoundDS);
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NO_DS_BOUND, "DS", str);
                }
                else { // We have a good DS & Pipeline, store pipeline mappings in DS
                    uint32_t slotOffset = lastBoundSlotOffset;
                    for (uint32_t j = 0; j < XGL_NUM_GRAPHICS_SHADERS; j++) { // j is shader selector
                        if (pPipeTrav->dsMapping[j].count > (pDS->numSlots - slotOffset)) {
                            sprintf(str, "DS Mapping for shader %u has more slots (%u) than DS %p (%u) minus slotOffset (%u) (%u slots available)!", j, pPipeTrav->dsMapping[j].count, (void*)pDS->dsID, pDS->numSlots, slotOffset, (pDS->numSlots - slotOffset));
                            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_DS_SLOT_NUM_MISMATCH, "DS", str);
                        }
                        else {
                            for (uint32_t r = 0; r < pPipeTrav->dsMapping[j].count; r++) {
                                pDS->dsSlot[r+slotOffset].shaderSlotInfo[j] = pPipeTrav->dsMapping[j].pShaderMappingSlot[r];
                            }
                        }
                    }
                }
            }
            else {
                // Verify that no shader is mapping this DS
                uint32_t dsUsed = 0;
                for (uint32_t j = 0; j < XGL_NUM_GRAPHICS_SHADERS; j++) { // j is shader selector
                    if (pPipeTrav->dsMapping[j].count > 0) {
                        dsUsed = 1;
                        sprintf(str, "No DS was bound, but shader type %s has slots bound to that DS.", string_XGL_PIPELINE_SHADER_STAGE(j));
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NO_DS_BOUND, "DS", str);
                    }
                }
                if (0 == dsUsed) {
                    sprintf(str, "No DS was bound, but no shaders are using that DS so this is not an issue.");
                    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", str);
                }
            }
*/
        //}
        // Verify Vtx binding
        if (MAX_BINDING != lastVtxBinding) {
            if (lastVtxBinding >= pPipeTrav->vtxBindingCount) {
                sprintf(str, "Vtx binding Index of %u exceeds PSO pVertexBindingDescriptions max array index of %u.", lastVtxBinding, (pPipeTrav->vtxBindingCount - 1));
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_VTX_INDEX_OUT_OF_BOUNDS, "DS", str);
            }
            else {
                char *tmpStr = xgl_print_xgl_vertex_input_binding_description(&pPipeTrav->pVertexBindingDescriptions[lastVtxBinding], "{DS}INFO : ");
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", tmpStr);
                free(tmpStr);
            }
        }
    }
}

// Print details of DS config to stdout
static void printDSConfig()
{
    uint32_t skipUnusedCount = 0; // track consecutive unused slots for minimal reporting
    char tmp_str[1024];
    char ds_config_str[1024*256] = {0}; // TODO : Currently making this buffer HUGE w/o overrun protection.  Need to be smarter, start smaller, and grow as needed.
    for (uint32_t i = 0; i < XGL_MAX_DESCRIPTOR_SETS; i++) {
        if (lastBoundDS[i]) {
            DS_LL_HEAD *pDS = getDS(lastBoundDS[i]);
            uint32_t slotOffset = lastBoundSlotOffset[i];
            if (pDS) {
                sprintf(tmp_str, "DS INFO : Slot bindings for DS[%u] (%p) - %u slots and slotOffset %u:\n", i, (void*)pDS->dsID, pDS->numSlots, slotOffset);
                strcat(ds_config_str, tmp_str);
                for (uint32_t j = 0; j < pDS->numSlots; j++) {
                    switch (pDS->dsSlot[j].activeMapping)
                    {
                        case MAPPING_MEMORY:
                            if (0 != skipUnusedCount) {// finish sequence of unused slots
                                sprintf(tmp_str, "----Skipped %u slot%s w/o a view attached...\n", skipUnusedCount, (1 != skipUnusedCount) ? "s" : "");
                                strcat(ds_config_str, tmp_str);
                                skipUnusedCount = 0;
                            }
                            sprintf(tmp_str, "----Slot %u\n    Mapped to Memory View %p:\n%s", j, (void*)&pDS->dsSlot[j].buffView, xgl_print_xgl_memory_view_attach_info(&pDS->dsSlot[j].buffView, "        "));
                            strcat(ds_config_str, tmp_str);
                            break;
                        case MAPPING_IMAGE:
                            if (0 != skipUnusedCount) {// finish sequence of unused slots
                                sprintf(tmp_str, "----Skipped %u slot%s w/o a view attached...\n", skipUnusedCount, (1 != skipUnusedCount) ? "s" : "");
                                strcat(ds_config_str, tmp_str);
                                skipUnusedCount = 0;
                            }
                            sprintf(tmp_str, "----Slot %u\n    Mapped to Image View %p:\n%s", j, (void*)&pDS->dsSlot[j].imageView, xgl_print_xgl_image_view_attach_info(&pDS->dsSlot[j].imageView, "        "));
                            strcat(ds_config_str, tmp_str);
                            break;
                        case MAPPING_SAMPLER:
                            if (0 != skipUnusedCount) {// finish sequence of unused slots
                                sprintf(tmp_str, "----Skipped %u slot%s w/o a view attached...\n", skipUnusedCount, (1 != skipUnusedCount) ? "s" : "");
                                strcat(ds_config_str, tmp_str);
                                skipUnusedCount = 0;
                            }
                            sprintf(tmp_str, "----Slot %u\n    Mapped to Sampler Object %p:\n%s", j, (void*)pDS->dsSlot[j].sampler, xgl_print_xgl_sampler_create_info(getSamplerCreateInfo(pDS->dsSlot[j].sampler), "        "));
                            strcat(ds_config_str, tmp_str);
                            break;
                        default:
                            if (!skipUnusedCount) {// only report start of unused sequences
                                sprintf(tmp_str, "----Skipping slot(s) w/o a view attached...\n");
                                strcat(ds_config_str, tmp_str);
                            }
                            skipUnusedCount++;
                            break;
                    }
                    // For each shader type, check its mapping
                    for (uint32_t k = 0; k < XGL_NUM_GRAPHICS_SHADERS; k++) {
                        if (XGL_SLOT_UNUSED != pDS->dsSlot[j].shaderSlotInfo[k].slotObjectType) {
                            sprintf(tmp_str, "    Shader type %s has %s slot type mapping to shaderEntityIndex %u\n", string_XGL_PIPELINE_SHADER_STAGE(k), string_XGL_DESCRIPTOR_SET_SLOT_TYPE(pDS->dsSlot[j].shaderSlotInfo[k].slotObjectType), pDS->dsSlot[j].shaderSlotInfo[k].shaderEntityIndex);
                            strcat(ds_config_str, tmp_str);
                            //verifyShaderSlotMapping(j, pDS->dsSlot[j].activeMapping, k, pDS->dsSlot[j].shaderSlotInfo[k].slotObjectType);
                        }
                    }
                }
                if (0 != skipUnusedCount) {// finish sequence of unused slots
                    sprintf(tmp_str, "----Skipped %u slot%s w/o a view attached...\n", skipUnusedCount, (1 != skipUnusedCount) ? "s" : "");
                    strcat(ds_config_str, tmp_str);
                    skipUnusedCount = 0;
                }
            }
            else {
                char str[1024];
                sprintf(str, "Can't find last bound DS %p. Did you need to bind DS to index %u?", (void*)lastBoundDS[i], i);
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NO_DS_BOUND, "DS", str);
            }
        }
    }
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_NONE, "DS", ds_config_str);
}

static void synchAndPrintDSConfig()
{
    synchDSMapping();
    printDSConfig();
    printPipeline();
    printDynamicState();
    static int autoDumpOnce = 1;
    if (autoDumpOnce) {
        autoDumpOnce = 0;
        dumpDotFile("pipeline_dump.dot");
        // Convert dot to png if dot available
#if defined(_WIN32)
// FIXME: NEED WINDOWS EQUIVALENT
#else // WIN32
        if(access( "/usr/bin/dot", X_OK) != -1) {
            system("/usr/bin/dot pipeline_dump.dot -Tpng -o pipeline_dump.png");
        }
#endif // WIN32
    }
}

static void initDrawState()
{
    const char *strOpt;
    // initialize DrawState options
    strOpt = getLayerOption("DrawStateReportLevel");
    if (strOpt != NULL)
        g_reportingLevel = atoi(strOpt);

    strOpt = getLayerOption("DrawStateDebugAction");
    if (strOpt != NULL)
        g_debugAction = atoi(strOpt);

    if (g_debugAction & XGL_DBG_LAYER_ACTION_LOG_MSG)
    {
        strOpt = getLayerOption("DrawStateLogFilename");
        if (strOpt)
        {
            g_logFile = fopen(strOpt, "w");
        }
        if (g_logFile == NULL)
            g_logFile = stdout;
    }
    // initialize Layer dispatch table
    // TODO handle multiple GPUs
    xglGetProcAddrType fpNextGPA;
    fpNextGPA = pCurObj->pGPA;
    assert(fpNextGPA);

    layer_initialize_dispatch_table(&nextTable, fpNextGPA, (XGL_PHYSICAL_GPU) pCurObj->nextObject);

    xglGetProcAddrType fpGetProcAddr = fpNextGPA((XGL_PHYSICAL_GPU) pCurObj->nextObject, (char *) "xglGetProcAddr");
    nextTable.GetProcAddr = fpGetProcAddr;

    if (!globalLockInitialized)
    {
        // TODO/TBD: Need to delete this mutex sometime.  How???  One
        // suggestion is to call this during xglCreateInstance(), and then we
        // can clean it up during xglDestroyInstance().  However, that requires
        // that the layer have per-instance locks.  We need to come back and
        // address this soon.
        loader_platform_thread_create_mutex(&globalLock);
        globalLockInitialized = 1;
    }
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateInstance(const XGL_APPLICATION_INFO* pAppInfo, const XGL_ALLOC_CALLBACKS* pAllocCb, XGL_INSTANCE* pInstance)
{
    XGL_RESULT result = nextTable.CreateInstance(pAppInfo, pAllocCb, pInstance);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDestroyInstance(XGL_INSTANCE instance)
{
    XGL_RESULT result = nextTable.DestroyInstance(instance);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEnumerateGpus(XGL_INSTANCE instance, uint32_t maxGpus, uint32_t* pGpuCount, XGL_PHYSICAL_GPU* pGpus)
{
    XGL_RESULT result = nextTable.EnumerateGpus(instance, maxGpus, pGpuCount, pGpus);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetGpuInfo(XGL_PHYSICAL_GPU gpu, XGL_PHYSICAL_GPU_INFO_TYPE infoType, size_t* pDataSize, void* pData)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.GetGpuInfo((XGL_PHYSICAL_GPU)gpuw->nextObject, infoType, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDevice(XGL_PHYSICAL_GPU gpu, const XGL_DEVICE_CREATE_INFO* pCreateInfo, XGL_DEVICE* pDevice)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.CreateDevice((XGL_PHYSICAL_GPU)gpuw->nextObject, pCreateInfo, pDevice);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDestroyDevice(XGL_DEVICE device)
{
    XGL_RESULT result = nextTable.DestroyDevice(device);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetExtensionSupport(XGL_PHYSICAL_GPU gpu, const char* pExtName)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.GetExtensionSupport((XGL_PHYSICAL_GPU)gpuw->nextObject, pExtName);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEnumerateLayers(XGL_PHYSICAL_GPU gpu, size_t maxLayerCount, size_t maxStringSize, size_t* pOutLayerCount, char* const* pOutLayers, void* pReserved)
{
    if (gpu != NULL)
    {
        XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
        pCurObj = gpuw;
        loader_platform_thread_once(&g_initOnce, initDrawState);
        XGL_RESULT result = nextTable.EnumerateLayers((XGL_PHYSICAL_GPU)gpuw->nextObject, maxLayerCount, maxStringSize, pOutLayerCount, pOutLayers, pReserved);
        return result;
    } else
    {
        if (pOutLayerCount == NULL || pOutLayers == NULL || pOutLayers[0] == NULL)
            return XGL_ERROR_INVALID_POINTER;
        // This layer compatible with all GPUs
        *pOutLayerCount = 1;
        strncpy((char *) pOutLayers[0], "DrawState", maxStringSize);
        return XGL_SUCCESS;
    }
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetDeviceQueue(XGL_DEVICE device, XGL_QUEUE_TYPE queueType, uint32_t queueIndex, XGL_QUEUE* pQueue)
{
    XGL_RESULT result = nextTable.GetDeviceQueue(device, queueType, queueIndex, pQueue);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglQueueSubmit(XGL_QUEUE queue, uint32_t cmdBufferCount, const XGL_CMD_BUFFER* pCmdBuffers, uint32_t memRefCount, const XGL_MEMORY_REF* pMemRefs, XGL_FENCE fence)
{
    XGL_RESULT result = nextTable.QueueSubmit(queue, cmdBufferCount, pCmdBuffers, memRefCount, pMemRefs, fence);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglQueueSetGlobalMemReferences(XGL_QUEUE queue, uint32_t memRefCount, const XGL_MEMORY_REF* pMemRefs)
{
    XGL_RESULT result = nextTable.QueueSetGlobalMemReferences(queue, memRefCount, pMemRefs);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglQueueWaitIdle(XGL_QUEUE queue)
{
    XGL_RESULT result = nextTable.QueueWaitIdle(queue);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDeviceWaitIdle(XGL_DEVICE device)
{
    XGL_RESULT result = nextTable.DeviceWaitIdle(device);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglAllocMemory(XGL_DEVICE device, const XGL_MEMORY_ALLOC_INFO* pAllocInfo, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.AllocMemory(device, pAllocInfo, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglFreeMemory(XGL_GPU_MEMORY mem)
{
    XGL_RESULT result = nextTable.FreeMemory(mem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglSetMemoryPriority(XGL_GPU_MEMORY mem, XGL_MEMORY_PRIORITY priority)
{
    XGL_RESULT result = nextTable.SetMemoryPriority(mem, priority);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglMapMemory(XGL_GPU_MEMORY mem, XGL_FLAGS flags, void** ppData)
{
    XGL_RESULT result = nextTable.MapMemory(mem, flags, ppData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglUnmapMemory(XGL_GPU_MEMORY mem)
{
    XGL_RESULT result = nextTable.UnmapMemory(mem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglPinSystemMemory(XGL_DEVICE device, const void* pSysMem, size_t memSize, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.PinSystemMemory(device, pSysMem, memSize, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetMultiGpuCompatibility(XGL_PHYSICAL_GPU gpu0, XGL_PHYSICAL_GPU gpu1, XGL_GPU_COMPATIBILITY_INFO* pInfo)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu0;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.GetMultiGpuCompatibility((XGL_PHYSICAL_GPU)gpuw->nextObject, gpu1, pInfo);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglOpenSharedMemory(XGL_DEVICE device, const XGL_MEMORY_OPEN_INFO* pOpenInfo, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.OpenSharedMemory(device, pOpenInfo, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglOpenSharedQueueSemaphore(XGL_DEVICE device, const XGL_QUEUE_SEMAPHORE_OPEN_INFO* pOpenInfo, XGL_QUEUE_SEMAPHORE* pSemaphore)
{
    XGL_RESULT result = nextTable.OpenSharedQueueSemaphore(device, pOpenInfo, pSemaphore);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglOpenPeerMemory(XGL_DEVICE device, const XGL_PEER_MEMORY_OPEN_INFO* pOpenInfo, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.OpenPeerMemory(device, pOpenInfo, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglOpenPeerImage(XGL_DEVICE device, const XGL_PEER_IMAGE_OPEN_INFO* pOpenInfo, XGL_IMAGE* pImage, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.OpenPeerImage(device, pOpenInfo, pImage, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDestroyObject(XGL_OBJECT object)
{
    XGL_RESULT result = nextTable.DestroyObject(object);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetObjectInfo(XGL_BASE_OBJECT object, XGL_OBJECT_INFO_TYPE infoType, size_t* pDataSize, void* pData)
{
    XGL_RESULT result = nextTable.GetObjectInfo(object, infoType, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBindObjectMemory(XGL_OBJECT object, uint32_t allocationIdx, XGL_GPU_MEMORY mem, XGL_GPU_SIZE offset)
{
    XGL_RESULT result = nextTable.BindObjectMemory(object, allocationIdx, mem, offset);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBindObjectMemoryRange(XGL_OBJECT object, uint32_t allocationIdx, XGL_GPU_SIZE rangeOffset, XGL_GPU_SIZE rangeSize, XGL_GPU_MEMORY mem, XGL_GPU_SIZE memOffset)
{
    XGL_RESULT result = nextTable.BindObjectMemoryRange(object, allocationIdx, rangeOffset, rangeSize, mem, memOffset);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBindImageMemoryRange(XGL_IMAGE image, uint32_t allocationIdx, const XGL_IMAGE_MEMORY_BIND_INFO* bindInfo, XGL_GPU_MEMORY mem, XGL_GPU_SIZE memOffset)
{
    XGL_RESULT result = nextTable.BindImageMemoryRange(image, allocationIdx, bindInfo, mem, memOffset);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateFence(XGL_DEVICE device, const XGL_FENCE_CREATE_INFO* pCreateInfo, XGL_FENCE* pFence)
{
    XGL_RESULT result = nextTable.CreateFence(device, pCreateInfo, pFence);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetFenceStatus(XGL_FENCE fence)
{
    XGL_RESULT result = nextTable.GetFenceStatus(fence);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWaitForFences(XGL_DEVICE device, uint32_t fenceCount, const XGL_FENCE* pFences, bool32_t waitAll, uint64_t timeout)
{
    XGL_RESULT result = nextTable.WaitForFences(device, fenceCount, pFences, waitAll, timeout);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateQueueSemaphore(XGL_DEVICE device, const XGL_QUEUE_SEMAPHORE_CREATE_INFO* pCreateInfo, XGL_QUEUE_SEMAPHORE* pSemaphore)
{
    XGL_RESULT result = nextTable.CreateQueueSemaphore(device, pCreateInfo, pSemaphore);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglSignalQueueSemaphore(XGL_QUEUE queue, XGL_QUEUE_SEMAPHORE semaphore)
{
    XGL_RESULT result = nextTable.SignalQueueSemaphore(queue, semaphore);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWaitQueueSemaphore(XGL_QUEUE queue, XGL_QUEUE_SEMAPHORE semaphore)
{
    XGL_RESULT result = nextTable.WaitQueueSemaphore(queue, semaphore);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateEvent(XGL_DEVICE device, const XGL_EVENT_CREATE_INFO* pCreateInfo, XGL_EVENT* pEvent)
{
    XGL_RESULT result = nextTable.CreateEvent(device, pCreateInfo, pEvent);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetEventStatus(XGL_EVENT event)
{
    XGL_RESULT result = nextTable.GetEventStatus(event);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglSetEvent(XGL_EVENT event)
{
    XGL_RESULT result = nextTable.SetEvent(event);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglResetEvent(XGL_EVENT event)
{
    XGL_RESULT result = nextTable.ResetEvent(event);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateQueryPool(XGL_DEVICE device, const XGL_QUERY_POOL_CREATE_INFO* pCreateInfo, XGL_QUERY_POOL* pQueryPool)
{
    XGL_RESULT result = nextTable.CreateQueryPool(device, pCreateInfo, pQueryPool);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetQueryPoolResults(XGL_QUERY_POOL queryPool, uint32_t startQuery, uint32_t queryCount, size_t* pDataSize, void* pData)
{
    XGL_RESULT result = nextTable.GetQueryPoolResults(queryPool, startQuery, queryCount, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetFormatInfo(XGL_DEVICE device, XGL_FORMAT format, XGL_FORMAT_INFO_TYPE infoType, size_t* pDataSize, void* pData)
{
    XGL_RESULT result = nextTable.GetFormatInfo(device, format, infoType, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateBuffer(XGL_DEVICE device, const XGL_BUFFER_CREATE_INFO* pCreateInfo, XGL_BUFFER* pBuffer)
{
    XGL_RESULT result = nextTable.CreateBuffer(device, pCreateInfo, pBuffer);
    if (XGL_SUCCESS == result) {
        pthread_mutex_lock(&globalLock);
        BUFFER_NODE *pNewNode = (BUFFER_NODE*)malloc(sizeof(BUFFER_NODE));
        pNewNode->buffer = *pBuffer;
        memcpy(&pNewNode->createInfo, pCreateInfo, sizeof(XGL_BUFFER_CREATE_INFO));
        pNewNode->pNext = g_pBufferHead;
        g_pBufferHead = pNewNode;
        pthread_mutex_unlock(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateBufferView(XGL_DEVICE device, const XGL_BUFFER_VIEW_CREATE_INFO* pCreateInfo, XGL_BUFFER_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateBufferView(device, pCreateInfo, pView);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateImage(XGL_DEVICE device, const XGL_IMAGE_CREATE_INFO* pCreateInfo, XGL_IMAGE* pImage)
{
    XGL_RESULT result = nextTable.CreateImage(device, pCreateInfo, pImage);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglSetFastClearColor(XGL_IMAGE image, const float color[4])
{
    XGL_RESULT result = nextTable.SetFastClearColor(image, color);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglSetFastClearDepth(XGL_IMAGE image, float depth)
{
    XGL_RESULT result = nextTable.SetFastClearDepth(image, depth);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglGetImageSubresourceInfo(XGL_IMAGE image, const XGL_IMAGE_SUBRESOURCE* pSubresource, XGL_SUBRESOURCE_INFO_TYPE infoType, size_t* pDataSize, void* pData)
{
    XGL_RESULT result = nextTable.GetImageSubresourceInfo(image, pSubresource, infoType, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateImageView(XGL_DEVICE device, const XGL_IMAGE_VIEW_CREATE_INFO* pCreateInfo, XGL_IMAGE_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateImageView(device, pCreateInfo, pView);
    if (XGL_SUCCESS == result) {
        pthread_mutex_lock(&globalLock);
        IMAGE_NODE *pNewNode = (IMAGE_NODE*)malloc(sizeof(IMAGE_NODE));
        pNewNode->image = *pView;
        memcpy(&pNewNode->createInfo, pCreateInfo, sizeof(XGL_IMAGE_VIEW_CREATE_INFO));
        pNewNode->pNext = g_pImageHead;
        g_pImageHead = pNewNode;
        pthread_mutex_unlock(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateColorAttachmentView(XGL_DEVICE device, const XGL_COLOR_ATTACHMENT_VIEW_CREATE_INFO* pCreateInfo, XGL_COLOR_ATTACHMENT_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateColorAttachmentView(device, pCreateInfo, pView);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDepthStencilView(XGL_DEVICE device, const XGL_DEPTH_STENCIL_VIEW_CREATE_INFO* pCreateInfo, XGL_DEPTH_STENCIL_VIEW* pView)
{
    XGL_RESULT result = nextTable.CreateDepthStencilView(device, pCreateInfo, pView);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateShader(XGL_DEVICE device, const XGL_SHADER_CREATE_INFO* pCreateInfo, XGL_SHADER* pShader)
{
    XGL_RESULT result = nextTable.CreateShader(device, pCreateInfo, pShader);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateGraphicsPipeline(XGL_DEVICE device, const XGL_GRAPHICS_PIPELINE_CREATE_INFO* pCreateInfo, XGL_PIPELINE* pPipeline)
{
    XGL_RESULT result = nextTable.CreateGraphicsPipeline(device, pCreateInfo, pPipeline);
    // Create LL HEAD for this Pipeline
    char str[1024];
    sprintf(str, "Created Gfx Pipeline %p", (void*)*pPipeline);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pPipeline, 0, DRAWSTATE_NONE, "DS", str);
    loader_platform_thread_lock_mutex(&globalLock);
    PIPELINE_NODE *pTrav = g_pPipelineHead;
    if (pTrav) {
        while (pTrav->pNext)
            pTrav = pTrav->pNext;
        pTrav->pNext = (PIPELINE_NODE*)malloc(sizeof(PIPELINE_NODE));
        pTrav = pTrav->pNext;
    }
    else {
        pTrav = (PIPELINE_NODE*)malloc(sizeof(PIPELINE_NODE));
        g_pPipelineHead = pTrav;
    }
    memset((void*)pTrav, 0, sizeof(PIPELINE_NODE));
    pTrav->pipeline = *pPipeline;
    initPipeline(pTrav, pCreateInfo);
    loader_platform_thread_unlock_mutex(&globalLock);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateComputePipeline(XGL_DEVICE device, const XGL_COMPUTE_PIPELINE_CREATE_INFO* pCreateInfo, XGL_PIPELINE* pPipeline)
{
    XGL_RESULT result = nextTable.CreateComputePipeline(device, pCreateInfo, pPipeline);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglStorePipeline(XGL_PIPELINE pipeline, size_t* pDataSize, void* pData)
{
    XGL_RESULT result = nextTable.StorePipeline(pipeline, pDataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglLoadPipeline(XGL_DEVICE device, size_t dataSize, const void* pData, XGL_PIPELINE* pPipeline)
{
    XGL_RESULT result = nextTable.LoadPipeline(device, dataSize, pData, pPipeline);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreatePipelineDelta(XGL_DEVICE device, XGL_PIPELINE p1, XGL_PIPELINE p2, XGL_PIPELINE_DELTA* delta)
{
    XGL_RESULT result = nextTable.CreatePipelineDelta(device, p1, p2, delta);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateSampler(XGL_DEVICE device, const XGL_SAMPLER_CREATE_INFO* pCreateInfo, XGL_SAMPLER* pSampler)
{
    XGL_RESULT result = nextTable.CreateSampler(device, pCreateInfo, pSampler);
    if (XGL_SUCCESS == result) {
        loader_platform_thread_lock_mutex(&globalLock);
        SAMPLER_NODE *pNewNode = (SAMPLER_NODE*)malloc(sizeof(SAMPLER_NODE));
        pNewNode->sampler = *pSampler;
        memcpy(&pNewNode->createInfo, pCreateInfo, sizeof(XGL_SAMPLER_CREATE_INFO));
        pNewNode->pNext = g_pSamplerHead;
        g_pSamplerHead = pNewNode;
        loader_platform_thread_unlock_mutex(&globalLock);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDescriptorSetLayout(XGL_DEVICE device, XGL_FLAGS stageFlags, const uint32_t* pSetBindPoints, XGL_DESCRIPTOR_SET_LAYOUT priorSetLayout, const XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO* pSetLayoutInfoList, XGL_DESCRIPTOR_SET_LAYOUT* pSetLayout)
{
    XGL_RESULT result = nextTable.CreateDescriptorSetLayout(device, stageFlags, pSetBindPoints, priorSetLayout, pSetLayoutInfoList, pSetLayout);
    if (XGL_SUCCESS == result) {
        // Create new layout node off of prior layout
        LAYOUT_NODE* pTopLayout = getLayoutNode(g_pLayoutHead);
        LAYOUT_NODE* pNewNode = (LAYOUT_NODE*)malloc(sizeof(LAYOUT_NODE));
        if (NULL == pNewNode) {
            char str[1024];
            sprintf(str, "Out of memory while attempting to allocate LAYOUT_NODE in xglCreateDescriptorSetLayout()");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, *pSetLayout, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
        }
        memset(pNewNode, 0, sizeof(LAYOUT_NODE));
        // TODO : API Currently missing a count here that we should multiply by struct size
        pNewNode->pCreateInfoList = (XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO*)malloc(sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO));
        memcpy(pNewNode->pCreateInfoList, pSetLayoutInfoList, sizeof(XGL_DESCRIPTOR_SET_LAYOUT_CREATE_INFO));
        pNewNode->layout = *pSetLayout;
        pNewNode->stageFlags = stageFlag;
        LAYOUT_NODE* pPriorNode = getLayoutNode(priorSetLayout);
        // Point to prior node or NULL if no prior node
        // TODO : Flag an internal error here if priorNode was not NULL, but we still get a NULL LAYOUT_NODE
        pNewNode->pPriorSetLayout = pPriorNode;
        // Put new node at Head of global Layer list
        pNewNode->pNext = pTopLayout;
        g_pLayoutHead = pNewNode;
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBeginDescriptorRegionUpdate(XGL_DEVICE device, XGL_DESCRIPTOR_UPDATE_MODE updateMode)
{
    XGL_RESULT result = nextTable.BeginDescriptorRegionUpdate(device, updateMode);
    if (XGL_SUCCESS == result) {
        if (!g_pRegionHead) {
            char str[1024];
            sprintf(str, "No descriptor region found! Global descriptor region is NULL!");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_NO_DS_REGION, "DS", str);
        }
        else {
            REGION_NODE* pRegionNode = getRegionNode(g_pRegionHead);
            if (!pRegionNode) {
                char str[1024];
                sprintf(str, "Unable to find region node for global region head %p", (void*)g_pRegionHead);
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_INTERNAL_ERROR, "DS", str);
            }
            else {
                pRegionNode->updateActive = 1;
            }
        }
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEndDescriptorRegionUpdate(XGL_DEVICE device, XGL_CMD_BUFFER cmd)
{
    XGL_RESULT result = nextTable.EndDescriptorRegionUpdate(device, cmd);
    if (XGL_SUCCESS == result) {
        if (!g_pRegionHead) {
            char str[1024];
            sprintf(str, "No descriptor region found! Global descriptor region is NULL!");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_NO_DS_REGION, "DS", str);
        }
        else {
            REGION_NODE* pRegionNode = getRegionNode(g_pRegionHead);
            if (!pRegionNode) {
                char str[1024];
                sprintf(str, "Unable to find region node for global region head %p", (void*)g_pRegionHead);
                layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_INTERNAL_ERROR, "DS", str);
            }
            else {
                if (!pRegionNode->updateActive) {
                    char str[1024];
                    sprintf(str, "You must call xglBeginDescriptorRegionUpdate() before this call to xglEndDescriptorRegionUpdate()!");
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_DS_END_WITHOUT_BEGIN, "DS", str);
                }
                else {
                    pRegionNode->updateActive = 0;
                }
            }
        }
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDescriptorRegion(XGL_DEVICE device, XGL_DESCRIPTOR_REGION_USAGE regionUsage, uint32_t maxSets, const XGL_DESCRIPTOR_REGION_CREATE_INFO* pCreateInfo, XGL_DESCRIPTOR_REGION* pDescriptorRegion)
{
    XGL_RESULT result = nextTable.CreateDescriptorRegion(device, regionUsage, maxSets, pCreateInfo, pDescriptorRegion);
    if (XGL_SUCCESS == result) {
        // Insert this region into Global Region LL at head
        char str[1024];
        sprintf(str, "Created Descriptor Region %p", (void*)*pDescriptorRegion);
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pDescriptorRegion, 0, DRAWSTATE_NONE, "DS", str);
        pthread_mutex_lock(&globalLock);
        REGION_NODE *pTrav = g_pRegionHead;
        REGION_NODE pNewNode = (REGION_NODE*)malloc(sizeof(REGION_NODE));
        if (NULL == pNewNode) {
            char str[1024];
            sprintf(str, "Out of memory while attempting to allocate SET_NODE in xglAllocDescriptorSets()");
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, *pDescriptorRegion, 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
        }
        else {
            memset(pNewNode, 0, sizeof(REGION_NODE));
            pNewNode->pNext = g_pRegionHead;
            g_pRegionHead = pNewNode;
            memcpy(&pNewNode->createInfo, pCreateInfo, sizeof(XGL_DESCRIPTOR_REGION_CREATE_INFO));
            pNewNode->regionUsage  = regionUsage;
            pNewNode->updateActive = 0;
            pNewNode->maxSets      = maxSets;
            pNewNode->region       = *pDescriptorRegion;
        }
        pthread_mutex_unlock(&globalLock);
    }
    else {
        // Need to do anything if region create fails?
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglClearDescriptorRegion(XGL_DESCRIPTOR_REGION descriptorRegion)
{
    XGL_RESULT result = nextTable.ClearDescriptorRegion(descriptorRegion);
    if (XGL_SUCCESS == result) {
        clearDescriptorRegion(descriptorRegion);
    }
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglAllocDescriptorSets(XGL_DESCRIPTOR_REGION descriptorRegion, XGL_DESCRIPTOR_SET_USAGE setUsage, uint32_t count, const XGL_DESCRIPTOR_SET_LAYOUT* pSetLayouts, XGL_DESCRIPTOR_SET* pDescriptorSets, uint32_t* pCount)
{
    XGL_RESULT result = nextTable.AllocDescriptorSets(descriptorRegion, setUsage, count, pSetLayouts, pDescriptorSets, pCount);
    if ((XGL_SUCCESS == result) || (*pCount > 0)) {
        REGION_NODE *pRegionNode = getRegionNode(descriptorRegion);
        if (!pRegionNode) {
            char str[1024];
            sprintf(str, "Unable to find region node for region %p specified in xglAllocDescriptorSets() call", (void*)descriptorRegion);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descrtiptorRegion, 0, DRAWSTATE_INVALID_REGION, "DS", str);
        }
        else {
            for (uint32_t i; i < *pCount; i++) {
                char str[1024];
                sprintf(str, "Created Descriptor Set %p", (void*)pDescriptorSets[i]);
                layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, pDescriptorSet[i], 0, DRAWSTATE_NONE, "DS", str);
                pthread_mutex_lock(&globalLock);
                // Create new set node and add to head of region nodes
                SET_NODE pNewNode = (SET_NODE*)malloc(sizeof(SET_NODE));
                if (NULL == pNewNode) {
                    char str[1024];
                    sprintf(str, "Out of memory while attempting to allocate SET_NODE in xglAllocDescriptorSets()");
                    layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pDescriptorSet[i], 0, DRAWSTATE_OUT_OF_MEMORY, "DS", str);
                }
                else {
                    memset(pNewNode, 0, sizeof(SET_NODE));
                    // Insert set at head of Set LL for this region
                    pNewNode->pNext = pRegionNode->pSets;
                    pRegionNode->pSets = pNewNode;
                    LAYOUT_NODE* pLayout = getLayoutNode(pSetLayouts[i]);
                    if (NULL == pLayout) {
                        char str[1024];
                        sprintf(str, "Unable to find set layout node for layout %p specified in xglAllocDescriptorSets() call", (void*)pSetLayouts[i]);
                        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pSetLayouts[i], 0, DRAWSTATE_INVALID_LAYOUT, "DS", str);
                    }
                    pNewNode->pLayouts = pLayout;
                    pNewNode->region = descriptorRegion;
                    pNewNode->set = pDescriptorSets[i];
                    pNewNode->setUsage = setUsage;
                    pNewNode->descriptorCount = ;
                }
                pthread_mutex_unlock(&globalLock);
            }
        }
    }
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglClearDescriptorSets(XGL_DESCRIPTOR_REGION descriptorRegion, uint32_t count, const XGL_DESCRIPTOR_SET* pDescriptorSets)
{
    for (uint32_t i = 0; i < count; i++) {
        clearDescriptorSet(descriptorSets[i]);
    }
    nextTable.ClearDescriptorSets(descriptorRegion, count, pDescriptorSets);
}

XGL_LAYER_EXPORT void XGLAPI xglUpdateDescriptors(XGL_DESCRIPTOR_SET descriptorSet, const void* pUpdateChain)
{
    REGION_NODE* pRegionNode = getRegionNode(g_pRegionHead);
    if (!pRegionNode->updateActive) {
        char str[1024];
        sprintf(str, "You must call xglBeginDescriptorRegionUpdate() before this call to xglUpdateDescriptors()!");
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, g_pRegionHead, 0, DRAWSTATE_UPDATE_WITHOUT_BEGIN, "DS", str);
    }
    else {
        // pUpdateChain is a Linked-list of XGL_UPDATE_* structures defining the mappings for the descriptors
        dsUpdate(descriptorSet, (GENERIC_HEADER*)pUpdateChain);
    }

    nextTable.UpdateDescriptors(descriptorSet, pUpdateChain);
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicViewportState(XGL_DEVICE device, const XGL_DYNAMIC_VP_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_VP_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicViewportState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_VIEWPORT);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicRasterState(XGL_DEVICE device, const XGL_DYNAMIC_RS_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_RS_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicRasterState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_RASTER);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicColorBlendState(XGL_DEVICE device, const XGL_DYNAMIC_CB_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_CB_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicColorBlendState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_COLOR_BLEND);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateDynamicDepthStencilState(XGL_DEVICE device, const XGL_DYNAMIC_DS_STATE_CREATE_INFO* pCreateInfo, XGL_DYNAMIC_DS_STATE_OBJECT* pState)
{
    XGL_RESULT result = nextTable.CreateDynamicDepthStencilState(device, pCreateInfo, pState);
    insertDynamicState(*pState, (GENERIC_HEADER*)pCreateInfo, XGL_STATE_BIND_DEPTH_STENCIL);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateCommandBuffer(XGL_DEVICE device, const XGL_CMD_BUFFER_CREATE_INFO* pCreateInfo, XGL_CMD_BUFFER* pCmdBuffer)
{
    XGL_RESULT result = nextTable.CreateCommandBuffer(device, pCreateInfo, pCmdBuffer);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglBeginCommandBuffer(XGL_CMD_BUFFER cmdBuffer, const XGL_CMD_BUFFER_BEGIN_INFO* pBeginInfo)
{
    XGL_RESULT result = nextTable.BeginCommandBuffer(cmdBuffer, pBeginInfo);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglEndCommandBuffer(XGL_CMD_BUFFER cmdBuffer)
{
    XGL_RESULT result = nextTable.EndCommandBuffer(cmdBuffer);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglResetCommandBuffer(XGL_CMD_BUFFER cmdBuffer)
{
    XGL_RESULT result = nextTable.ResetCommandBuffer(cmdBuffer);
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindPipeline(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_PIPELINE pipeline)
{
    if (getPipeline(pipeline)) {
        lastBoundPipeline = pipeline;
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to bind Pipeline %p that doesn't exist!", (void*)pipeline);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, pipeline, 0, DRAWSTATE_INVALID_PIPELINE, "DS", str);
    }
    nextTable.CmdBindPipeline(cmdBuffer, pipelineBindPoint, pipeline);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindPipelineDelta(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_PIPELINE_DELTA delta)
{
    nextTable.CmdBindPipelineDelta(cmdBuffer, pipelineBindPoint, delta);
}
/*

XGL_LAYER_EXPORT void XGLAPI xglCmdBindDescriptorSet(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t index, XGL_DESCRIPTOR_SET descriptorSet, uint32_t slotOffset)
{
    if (getDS(descriptorSet)) {
        assert(index < XGL_MAX_DESCRIPTOR_SETS);
        if (dsUpdate(descriptorSet)) {
            char str[1024];
            sprintf(str, "You must call xglEndDescriptorSetUpdate(%p) before this call to xglCmdBindDescriptorSet()!", (void*)descriptorSet);
            layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_BINDING_DS_NO_END_UPDATE, "DS", str);
        }
        loader_platform_thread_lock_mutex(&globalLock);
        lastBoundDS[index] = descriptorSet;
        lastBoundSlotOffset[index] = slotOffset;
        loader_platform_thread_unlock_mutex(&globalLock);
        char str[1024];
        sprintf(str, "DS %p bound to DS index %u on pipeline %s", (void*)descriptorSet, index, string_XGL_PIPELINE_BIND_POINT(pipelineBindPoint));
        layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_NONE, "DS", str);
    }
    else {
        char str[1024];
        sprintf(str, "Attempt to bind DS %p that doesn't exist!", (void*)descriptorSet);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, descriptorSet, 0, DRAWSTATE_INVALID_DS, "DS", str);
    }
    nextTable.CmdBindDescriptorSet(cmdBuffer, pipelineBindPoint, index, descriptorSet, slotOffset);
}
*/


XGL_LAYER_EXPORT void XGLAPI xglCmdBindDynamicStateObject(XGL_CMD_BUFFER cmdBuffer, XGL_STATE_BIND_POINT stateBindPoint, XGL_DYNAMIC_STATE_OBJECT state)
{
    setLastBoundDynamicState(state, stateBindPoint);
    nextTable.CmdBindDynamicStateObject(cmdBuffer, stateBindPoint, state);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindDescriptorSet(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, XGL_DESCRIPTOR_SET descriptorSet, const uint32_t* pUserData)
{
    // TODO : Improve this. Can track per-cmd buffer and store bind point and pUserData
    g_lastBoundDS = descriptorSet;
    nextTable.CmdBindDescriptorSet(cmdBuffer, pipelineBindPoint, descriptorSet, pUserData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindIndexBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, XGL_INDEX_TYPE indexType)
{
    lastIdxBinding = binding;
    nextTable.CmdBindIndexBuffer(cmdBuffer, buffer, offset, indexType);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBindVertexBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t binding)
{
    lastVtxBinding = binding;
    nextTable.CmdBindVertexBuffer(cmdBuffer, buffer, offset, binding);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDraw(XGL_CMD_BUFFER cmdBuffer, uint32_t firstVertex, uint32_t vertexCount, uint32_t firstInstance, uint32_t instanceCount)
{
    char str[1024];
    sprintf(str, "xglCmdDraw() call #%lu, reporting DS state:", drawCount[DRAW]++);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
    synchAndPrintDSConfig();
    nextTable.CmdDraw(cmdBuffer, firstVertex, vertexCount, firstInstance, instanceCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndexed(XGL_CMD_BUFFER cmdBuffer, uint32_t firstIndex, uint32_t indexCount, int32_t vertexOffset, uint32_t firstInstance, uint32_t instanceCount)
{
    char str[1024];
    sprintf(str, "xglCmdDrawIndexed() call #%lu, reporting DS state:", drawCount[DRAW_INDEXED]++);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
    synchAndPrintDSConfig();
    nextTable.CmdDrawIndexed(cmdBuffer, firstIndex, indexCount, vertexOffset, firstInstance, instanceCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t count, uint32_t stride)
{
    char str[1024];
    sprintf(str, "xglCmdDrawIndirect() call #%lu, reporting DS state:", drawCount[DRAW_INDIRECT]++);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
    synchAndPrintDSConfig();
    nextTable.CmdDrawIndirect(cmdBuffer, buffer, offset, count, stride);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDrawIndexedIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset, uint32_t count, uint32_t stride)
{
    char str[1024];
    sprintf(str, "xglCmdDrawIndexedIndirect() call #%lu, reporting DS state:", drawCount[DRAW_INDEXED_INDIRECT]++);
    layerCbMsg(XGL_DBG_MSG_UNKNOWN, XGL_VALIDATION_LEVEL_0, cmdBuffer, 0, DRAWSTATE_NONE, "DS", str);
    synchAndPrintDSConfig();
    nextTable.CmdDrawIndexedIndirect(cmdBuffer, buffer, offset, count, stride);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDispatch(XGL_CMD_BUFFER cmdBuffer, uint32_t x, uint32_t y, uint32_t z)
{
    nextTable.CmdDispatch(cmdBuffer, x, y, z);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDispatchIndirect(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER buffer, XGL_GPU_SIZE offset)
{
    nextTable.CmdDispatchIndirect(cmdBuffer, buffer, offset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER srcBuffer, XGL_BUFFER destBuffer, uint32_t regionCount, const XGL_BUFFER_COPY* pRegions)
{
    nextTable.CmdCopyBuffer(cmdBuffer, srcBuffer, destBuffer, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE destImage, uint32_t regionCount, const XGL_IMAGE_COPY* pRegions)
{
    nextTable.CmdCopyImage(cmdBuffer, srcImage, destImage, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyBufferToImage(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER srcBuffer, XGL_IMAGE destImage, uint32_t regionCount, const XGL_BUFFER_IMAGE_COPY* pRegions)
{
    nextTable.CmdCopyBufferToImage(cmdBuffer, srcBuffer, destImage, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCopyImageToBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_BUFFER destBuffer, uint32_t regionCount, const XGL_BUFFER_IMAGE_COPY* pRegions)
{
    nextTable.CmdCopyImageToBuffer(cmdBuffer, srcImage, destBuffer, regionCount, pRegions);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdCloneImageData(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE_LAYOUT srcImageLayout, XGL_IMAGE destImage, XGL_IMAGE_LAYOUT destImageLayout)
{
    nextTable.CmdCloneImageData(cmdBuffer, srcImage, srcImageLayout, destImage, destImageLayout);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdUpdateBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset, XGL_GPU_SIZE dataSize, const uint32_t* pData)
{
    nextTable.CmdUpdateBuffer(cmdBuffer, destBuffer, destOffset, dataSize, pData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdFillBuffer(XGL_CMD_BUFFER cmdBuffer, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset, XGL_GPU_SIZE fillSize, uint32_t data)
{
    nextTable.CmdFillBuffer(cmdBuffer, destBuffer, destOffset, fillSize, data);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearColorImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, const float color[4], uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    nextTable.CmdClearColorImage(cmdBuffer, image, color, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearColorImageRaw(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, const uint32_t color[4], uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    nextTable.CmdClearColorImageRaw(cmdBuffer, image, color, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdClearDepthStencil(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE image, float depth, uint32_t stencil, uint32_t rangeCount, const XGL_IMAGE_SUBRESOURCE_RANGE* pRanges)
{
    nextTable.CmdClearDepthStencil(cmdBuffer, image, depth, stencil, rangeCount, pRanges);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResolveImage(XGL_CMD_BUFFER cmdBuffer, XGL_IMAGE srcImage, XGL_IMAGE destImage, uint32_t rectCount, const XGL_IMAGE_RESOLVE* pRects)
{
    nextTable.CmdResolveImage(cmdBuffer, srcImage, destImage, rectCount, pRects);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdSetEvent(XGL_CMD_BUFFER cmdBuffer, XGL_EVENT event, XGL_SET_EVENT pipeEvent)
{
    nextTable.CmdSetEvent(cmdBuffer, event, pipeEvent);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResetEvent(XGL_CMD_BUFFER cmdBuffer, XGL_EVENT event)
{
    nextTable.CmdResetEvent(cmdBuffer, event);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdWaitEvents(XGL_CMD_BUFFER cmdBuffer, const XGL_EVENT_WAIT_INFO* pWaitInfo)
{
    nextTable.CmdWaitEvents(cmdBuffer, pWaitInfo);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdPipelineBarrier(XGL_CMD_BUFFER cmdBuffer, const XGL_PIPELINE_BARRIER* pBarrier)
{
    nextTable.CmdPipelineBarrier(cmdBuffer, pBarrier);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBeginQuery(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t slot, XGL_FLAGS flags)
{
    nextTable.CmdBeginQuery(cmdBuffer, queryPool, slot, flags);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdEndQuery(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t slot)
{
    nextTable.CmdEndQuery(cmdBuffer, queryPool, slot);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdResetQueryPool(XGL_CMD_BUFFER cmdBuffer, XGL_QUERY_POOL queryPool, uint32_t startQuery, uint32_t queryCount)
{
    nextTable.CmdResetQueryPool(cmdBuffer, queryPool, startQuery, queryCount);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdWriteTimestamp(XGL_CMD_BUFFER cmdBuffer, XGL_TIMESTAMP_TYPE timestampType, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset)
{
    nextTable.CmdWriteTimestamp(cmdBuffer, timestampType, destBuffer, destOffset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdInitAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, const uint32_t* pData)
{
    nextTable.CmdInitAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, pData);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdLoadAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, XGL_BUFFER srcBuffer, XGL_GPU_SIZE srcOffset)
{
    nextTable.CmdLoadAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, srcBuffer, srcOffset);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdSaveAtomicCounters(XGL_CMD_BUFFER cmdBuffer, XGL_PIPELINE_BIND_POINT pipelineBindPoint, uint32_t startCounter, uint32_t counterCount, XGL_BUFFER destBuffer, XGL_GPU_SIZE destOffset)
{
    nextTable.CmdSaveAtomicCounters(cmdBuffer, pipelineBindPoint, startCounter, counterCount, destBuffer, destOffset);
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateFramebuffer(XGL_DEVICE device, const XGL_FRAMEBUFFER_CREATE_INFO* pCreateInfo, XGL_FRAMEBUFFER* pFramebuffer)
{
    XGL_RESULT result = nextTable.CreateFramebuffer(device, pCreateInfo, pFramebuffer);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglCreateRenderPass(XGL_DEVICE device, const XGL_RENDER_PASS_CREATE_INFO* pCreateInfo, XGL_RENDER_PASS* pRenderPass)
{
    XGL_RESULT result = nextTable.CreateRenderPass(device, pCreateInfo, pRenderPass);
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglCmdBeginRenderPass(XGL_CMD_BUFFER cmdBuffer, XGL_RENDER_PASS renderPass)
{
    nextTable.CmdBeginRenderPass(cmdBuffer, renderPass);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdEndRenderPass(XGL_CMD_BUFFER cmdBuffer, XGL_RENDER_PASS renderPass)
{
    nextTable.CmdEndRenderPass(cmdBuffer, renderPass);
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgSetValidationLevel(XGL_DEVICE device, XGL_VALIDATION_LEVEL validationLevel)
{
    XGL_RESULT result = nextTable.DbgSetValidationLevel(device, validationLevel);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgRegisterMsgCallback(XGL_DBG_MSG_CALLBACK_FUNCTION pfnMsgCallback, void* pUserData)
{
    // This layer intercepts callbacks
    XGL_LAYER_DBG_FUNCTION_NODE *pNewDbgFuncNode = (XGL_LAYER_DBG_FUNCTION_NODE*)malloc(sizeof(XGL_LAYER_DBG_FUNCTION_NODE));
    if (!pNewDbgFuncNode)
        return XGL_ERROR_OUT_OF_MEMORY;
    pNewDbgFuncNode->pfnMsgCallback = pfnMsgCallback;
    pNewDbgFuncNode->pUserData = pUserData;
    pNewDbgFuncNode->pNext = g_pDbgFunctionHead;
    g_pDbgFunctionHead = pNewDbgFuncNode;
    XGL_RESULT result = nextTable.DbgRegisterMsgCallback(pfnMsgCallback, pUserData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgUnregisterMsgCallback(XGL_DBG_MSG_CALLBACK_FUNCTION pfnMsgCallback)
{
    XGL_LAYER_DBG_FUNCTION_NODE *pTrav = g_pDbgFunctionHead;
    XGL_LAYER_DBG_FUNCTION_NODE *pPrev = pTrav;
    while (pTrav) {
        if (pTrav->pfnMsgCallback == pfnMsgCallback) {
            pPrev->pNext = pTrav->pNext;
            if (g_pDbgFunctionHead == pTrav)
                g_pDbgFunctionHead = pTrav->pNext;
            free(pTrav);
            break;
        }
        pPrev = pTrav;
        pTrav = pTrav->pNext;
    }
    XGL_RESULT result = nextTable.DbgUnregisterMsgCallback(pfnMsgCallback);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgSetMessageFilter(XGL_DEVICE device, int32_t msgCode, XGL_DBG_MSG_FILTER filter)
{
    XGL_RESULT result = nextTable.DbgSetMessageFilter(device, msgCode, filter);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgSetObjectTag(XGL_BASE_OBJECT object, size_t tagSize, const void* pTag)
{
    XGL_RESULT result = nextTable.DbgSetObjectTag(object, tagSize, pTag);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgSetGlobalOption(XGL_DBG_GLOBAL_OPTION dbgOption, size_t dataSize, const void* pData)
{
    XGL_RESULT result = nextTable.DbgSetGlobalOption(dbgOption, dataSize, pData);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglDbgSetDeviceOption(XGL_DEVICE device, XGL_DBG_DEVICE_OPTION dbgOption, size_t dataSize, const void* pData)
{
    XGL_RESULT result = nextTable.DbgSetDeviceOption(device, dbgOption, dataSize, pData);
    return result;
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDbgMarkerBegin(XGL_CMD_BUFFER cmdBuffer, const char* pMarker)
{
    nextTable.CmdDbgMarkerBegin(cmdBuffer, pMarker);
}

XGL_LAYER_EXPORT void XGLAPI xglCmdDbgMarkerEnd(XGL_CMD_BUFFER cmdBuffer)
{
    nextTable.CmdDbgMarkerEnd(cmdBuffer);
}

#if defined(WIN32)
// FIXME: NEED WINDOWS EQUIVALENT
#else // WIN32
XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWsiX11AssociateConnection(XGL_PHYSICAL_GPU gpu, const XGL_WSI_X11_CONNECTION_INFO* pConnectionInfo)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);
    XGL_RESULT result = nextTable.WsiX11AssociateConnection((XGL_PHYSICAL_GPU)gpuw->nextObject, pConnectionInfo);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWsiX11GetMSC(XGL_DEVICE device, xcb_window_t window, xcb_randr_crtc_t crtc, uint64_t* pMsc)
{
    XGL_RESULT result = nextTable.WsiX11GetMSC(device, window, crtc, pMsc);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWsiX11CreatePresentableImage(XGL_DEVICE device, const XGL_WSI_X11_PRESENTABLE_IMAGE_CREATE_INFO* pCreateInfo, XGL_IMAGE* pImage, XGL_GPU_MEMORY* pMem)
{
    XGL_RESULT result = nextTable.WsiX11CreatePresentableImage(device, pCreateInfo, pImage, pMem);
    return result;
}

XGL_LAYER_EXPORT XGL_RESULT XGLAPI xglWsiX11QueuePresent(XGL_QUEUE queue, const XGL_WSI_X11_PRESENT_INFO* pPresentInfo, XGL_FENCE fence)
{
    XGL_RESULT result = nextTable.WsiX11QueuePresent(queue, pPresentInfo, fence);
    return result;
}
#endif // WIN32

void drawStateDumpDotFile(char* outFileName)
{
    dumpDotFile(outFileName);
}

void drawStateDumpPngFile(char* outFileName)
{
#if defined(_WIN32)
// FIXME: NEED WINDOWS EQUIVALENT
        char str[1024];
        sprintf(str, "Cannot execute dot program yet on Windows.");
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_MISSING_DOT_PROGRAM, "DS", str);
#else // WIN32
    char dotExe[32] = "/usr/bin/dot";
    if( access(dotExe, X_OK) != -1) {
        dumpDotFile("/tmp/tmp.dot");
        char dotCmd[1024];
        sprintf(dotCmd, "%s /tmp/tmp.dot -Tpng -o %s", dotExe, outFileName);
        system(dotCmd);
        remove("/tmp/tmp.dot");
    }
    else {
        char str[1024];
        sprintf(str, "Cannot execute dot program at (%s) to dump requested %s file.", dotExe, outFileName);
        layerCbMsg(XGL_DBG_MSG_ERROR, XGL_VALIDATION_LEVEL_0, NULL, 0, DRAWSTATE_MISSING_DOT_PROGRAM, "DS", str);
    }
#endif // WIN32
}

XGL_LAYER_EXPORT void* XGLAPI xglGetProcAddr(XGL_PHYSICAL_GPU gpu, const char* funcName)
{
    XGL_BASE_LAYER_OBJECT* gpuw = (XGL_BASE_LAYER_OBJECT *) gpu;
    void *addr;

    if (gpu == NULL)
        return NULL;
    pCurObj = gpuw;
    loader_platform_thread_once(&g_initOnce, initDrawState);

    addr = layer_intercept_proc(funcName);
    if (addr)
        return addr;
    else if (!strncmp("drawStateDumpDotFile", funcName, sizeof("drawStateDumpDotFile")))
        return drawStateDumpDotFile;
    else if (!strncmp("drawStateDumpPngFile", funcName, sizeof("drawStateDumpPngFile")))
        return drawStateDumpPngFile;
    else {
        if (gpuw->pGPA == NULL)
            return NULL;
        return gpuw->pGPA(gpuw->nextObject, funcName);
    }
}