TheRock/rocm-systems/projects/clr/rocclr/platform/interop_gl.cpp

/*
 * Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
 *
 * SPDX-License-Identifier: MIT
 */

#include "top.hpp"

#ifdef _WIN32
#include <d3d10_1.h>
#include <d3d9.h>
#include <dxgi.h>
#endif  //_WIN32

#include <GL/gl.h>
#include <GL/glext.h>

#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <EGL/eglplatform.h>

#include "cl_common.hpp"

#include "device/device.hpp"
#include "platform/command.hpp"
#include "platform/interop_gl.hpp"

/* The pixel internal format for DOPP texture defined in gl_enum.h */
#define GL_BGR8_ATI 0x8083
#define GL_BGRA8_ATI 0x8088

#include <cstring>
#include <vector>

// Placed here as opposed to command.cpp, as glext.h and cl_gl_amd.hpp will have
// to be included because of the GL calls
bool amd::ClGlEvent::waitForFence() {
  GLenum ret;
  // get fence id associated with fence event
  GLsync gs =
      !command().data().empty() ? reinterpret_cast<GLsync>(command().data().back()) : nullptr;
  if (!gs) return false;

  // Try to use DC and GLRC of current thread, if it doesn't exist
  // create a new GL context on this thread, which is shared with the original context

#ifdef _WIN32
  HDC tempDC_ = context().glenv()->wglGetCurrentDC_();
  HGLRC tempGLRC_ = context().glenv()->wglGetCurrentContext_();
  // Set DC and GLRC
  if (tempDC_ && tempGLRC_) {
    amd::GLFunctions::Lock lock(context().glenv());
    ret = context().glenv()->glClientWaitSync_(gs, GL_SYNC_FLUSH_COMMANDS_BIT,
                                               static_cast<GLuint64>(-1));
    if (!(ret == GL_ALREADY_SIGNALED || ret == GL_CONDITION_SATISFIED)) return false;
  } else {
    tempDC_ = context().glenv()->getDC();
    tempGLRC_ = context().glenv()->getIntGLRC();
    if (!context().glenv()->init(reinterpret_cast<intptr_t>(tempDC_),
                                 reinterpret_cast<intptr_t>(tempGLRC_)))
      return false;

    // Make the newly created GL context current to this thread
    amd::GLFunctions::SetIntEnv ie(context().glenv());

    // If fence has not yet executed, wait till it finishes
    ret = context().glenv()->glClientWaitSync_(gs, GL_SYNC_FLUSH_COMMANDS_BIT,
                                               static_cast<GLuint64>(-1));
    if (!(ret == GL_ALREADY_SIGNALED || ret == GL_CONDITION_SATISFIED)) return false;
  }
#else  // Lnx
  Display* tempDpy_ = context().glenv()->glXGetCurrentDisplay_();
  GLXDrawable tempDrawable_ = context().glenv()->glXGetCurrentDrawable_();
  GLXContext tempCtx_ = context().glenv()->glXGetCurrentContext_();
  // Set internal Display and GLXContext
  if (tempDpy_ && tempCtx_) {
    amd::GLFunctions::Lock lock(context().glenv());
    ret = context().glenv()->glClientWaitSync_(gs, GL_SYNC_FLUSH_COMMANDS_BIT,
                                               static_cast<GLuint64>(-1));
    if (!(ret == GL_ALREADY_SIGNALED || ret == GL_CONDITION_SATISFIED)) return false;
  } else {
    if (!context().glenv()->init(reinterpret_cast<intptr_t>(context().glenv()->getIntDpy()),
                                 reinterpret_cast<intptr_t>(context().glenv()->getIntCtx())))
      return false;

    // Make the newly created GL context current to this thread
    amd::GLFunctions::SetIntEnv ie(context().glenv());

    // If fence has not yet executed, wait till it finishes
    ret = context().glenv()->glClientWaitSync_(gs, GL_SYNC_FLUSH_COMMANDS_BIT,
                                               static_cast<GLuint64>(-1));
    if (!(ret == GL_ALREADY_SIGNALED || ret == GL_CONDITION_SATISFIED)) return false;
  }
#endif
  // If we reach this point, fence should have completed
  setStatus(CL_COMPLETE);
  return true;
}


void amd::BufferGL::initDeviceMemory() {
  deviceMemories_ =
      reinterpret_cast<DeviceMemory*>(reinterpret_cast<char*>(this) + sizeof(BufferGL));
  memset(deviceMemories_, 0, context_().devices().size() * sizeof(DeviceMemory));
}

void amd::ImageGL::initDeviceMemory() {
  deviceMemories_ =
      reinterpret_cast<DeviceMemory*>(reinterpret_cast<char*>(this) + sizeof(ImageGL));
  memset(deviceMemories_, 0, context_().devices().size() * sizeof(DeviceMemory));
}

#ifdef _WIN32
#define CONVERT_CHAR_GLUBYTE
#else  //!_WIN32
#define CONVERT_CHAR_GLUBYTE (GLubyte*)
#endif  //!_WIN32

#define GLPREFIX(rtype, fcn, dclargs)                                                              \
  if (!(fcn##_ = (PFN_##fcn)GETPROCADDRESS(libHandle_, #fcn))) {                                   \
    if (!(fcn##_ = (PFN_##fcn)GetProcAddress_(reinterpret_cast<FCN_STR_TYPE>(#fcn)))) ++missed_;   \
  }

amd::GLFunctions::SetIntEnv::SetIntEnv(GLFunctions* env) : env_(env) {
  env_->getLock().lock();

  // Set environment (DC and GLRC)
  isValid_ = env_->setIntEnv();
}

amd::GLFunctions::SetIntEnv::~SetIntEnv() {
  // Restore environment (CL DC and CL GLRC)
  env_->restoreEnv();

  env_->getLock().unlock();
}

amd::GLFunctions::Lock::Lock(GLFunctions* env) : env_(env) { env_->getLock().lock(); }

amd::GLFunctions::Lock::~Lock() { env_->getLock().unlock(); }

amd::GLFunctions::GLFunctions(HMODULE h, bool isEGL)
    : libHandle_(h),
      missed_(0),
      eglDisplay_(EGL_NO_DISPLAY),
      eglOriginalContext_(EGL_NO_CONTEXT),
      eglInternalContext_(EGL_NO_CONTEXT),
      eglTempContext_(EGL_NO_CONTEXT),
      isEGL_(isEGL),
#ifdef _WIN32
      hOrigGLRC_(0),
      hDC_(0),
      hIntGLRC_(0)
#else   //!_WIN32
      Dpy_(0),
      Drawable_(0),
      origCtx_(0),
      intDpy_(0),
      intDrawable_(0),
      intCtx_(0),
      XOpenDisplay_(nullptr),
      XCloseDisplay_(nullptr),
      glXGetCurrentDrawable_(nullptr),
      glXGetCurrentDisplay_(nullptr),
      glXGetCurrentContext_(nullptr),
      glXChooseVisual_(nullptr),
      glXCreateContext_(nullptr),
      glXDestroyContext_(nullptr),
      glXMakeCurrent_(nullptr)
#endif  //!_WIN32
{
#define VERIFY_POINTER(p)                                                                          \
  if (nullptr == p) {                                                                              \
    missed_++;                                                                                     \
  }

  if (isEGL_) {
    GetProcAddress_ = (PFN_xxxGetProcAddress)GETPROCADDRESS(h, "eglGetProcAddress");
  } else {
    GetProcAddress_ = (PFN_xxxGetProcAddress)GETPROCADDRESS(h, API_GETPROCADDR);
  }
#ifndef _WIN32
  // Initialize pointers to X11/GLX functions
  // We can not link with these functions on compile time since we need to support
  // console mode. In console mode X server and X server components may be absent.
  // Hence linking with X11 or libGL will fail module image loading in console mode.-tzachi cohen

  if (!isEGL_) {
    glXGetCurrentDrawable_ = (PFNglXGetCurrentDrawable)GETPROCADDRESS(h, "glXGetCurrentDrawable");
    VERIFY_POINTER(glXGetCurrentDrawable_)
    glXGetCurrentDisplay_ = (PFNglXGetCurrentDisplay)GETPROCADDRESS(h, "glXGetCurrentDisplay");
    VERIFY_POINTER(glXGetCurrentDisplay_)
    glXGetCurrentContext_ = (PFNglXGetCurrentContext)GETPROCADDRESS(h, "glXGetCurrentContext");
    VERIFY_POINTER(glXGetCurrentContext_)
    glXChooseVisual_ = (PFNglXChooseVisual)GETPROCADDRESS(h, "glXChooseVisual");
    VERIFY_POINTER(glXChooseVisual_)
    glXCreateContext_ = (PFNglXCreateContext)GETPROCADDRESS(h, "glXCreateContext");
    VERIFY_POINTER(glXCreateContext_)
    glXDestroyContext_ = (PFNglXDestroyContext)GETPROCADDRESS(h, "glXDestroyContext");
    VERIFY_POINTER(glXDestroyContext_)
    glXMakeCurrent_ = (PFNglXMakeCurrent)GETPROCADDRESS(h, "glXMakeCurrent");
    VERIFY_POINTER(glXMakeCurrent_)

    HMODULE hXModule = (HMODULE)Os::loadLibrary("libX11.so.6");
    if (nullptr != hXModule) {
      XOpenDisplay_ = (PFNXOpenDisplay)GETPROCADDRESS(hXModule, "XOpenDisplay");
      VERIFY_POINTER(XOpenDisplay_)
      XCloseDisplay_ = (PFNXCloseDisplay)GETPROCADDRESS(hXModule, "XCloseDisplay");
      VERIFY_POINTER(XCloseDisplay_)
      XFree_ = (PFNXFree)GETPROCADDRESS(hXModule, "XFree");
      VERIFY_POINTER(XFree_)
    } else {
      missed_ += 2;
    }
  }
// Initialize pointers to GL functions
#include "gl_functions.hpp"
#else
  if (!isEGL_) {
    wglCreateContext_ = (PFN_wglCreateContext)GETPROCADDRESS(h, "wglCreateContext");
    VERIFY_POINTER(wglCreateContext_)
    wglGetCurrentContext_ = (PFN_wglGetCurrentContext)GETPROCADDRESS(h, "wglGetCurrentContext");
    VERIFY_POINTER(wglGetCurrentContext_)
    wglGetCurrentDC_ = (PFN_wglGetCurrentDC)GETPROCADDRESS(h, "wglGetCurrentDC");
    VERIFY_POINTER(wglGetCurrentDC_)
    wglDeleteContext_ = (PFN_wglDeleteContext)GETPROCADDRESS(h, "wglDeleteContext");
    VERIFY_POINTER(wglDeleteContext_)
    wglMakeCurrent_ = (PFN_wglMakeCurrent)GETPROCADDRESS(h, "wglMakeCurrent");
    VERIFY_POINTER(wglMakeCurrent_)
    wglShareLists_ = (PFN_wglShareLists)GETPROCADDRESS(h, "wglShareLists");
    VERIFY_POINTER(wglShareLists_)
  }
#endif
}

amd::GLFunctions::~GLFunctions() {
#ifdef _WIN32
  if (hIntGLRC_) {
    if (!wglDeleteContext_(hIntGLRC_)) {
      DWORD dwErr = GetLastError();
      LogWarning("Cannot delete GLRC");
    }
  }
#else   //!_WIN32
  if (intDpy_) {
    if (intCtx_) {
      glXDestroyContext_(intDpy_, intCtx_);
      intCtx_ = nullptr;
    }
    XCloseDisplay_(intDpy_);
    intDpy_ = nullptr;
  }
#endif  //!_WIN32
}
// in case of HIP GL interop we want to make sure we have the updated context
bool amd::GLFunctions::update(intptr_t hglrc) {
#ifdef _WIN32
  DWORD err;
  if (hOrigGLRC_ == (HGLRC)hglrc) {
    return true;
  }
  hOrigGLRC_ = (HGLRC)hglrc;
  if (hIntGLRC_ != nullptr) {
    wglDeleteContext_(hIntGLRC_);
  }
  if (!(hIntGLRC_ = wglCreateContext_(wglGetCurrentDC_()))) {
    err = GetLastError();
    return false;
  }
  if (!wglShareLists_(hOrigGLRC_, hIntGLRC_)) {
    err = GetLastError();
    return false;
  }
#else  //!_WIN32
  Dpy_ = glXGetCurrentDisplay_();
  Drawable_ = glXGetCurrentDrawable_();
  if (origCtx_ == (GLXContext)hglrc) {
    return true;
  }

  origCtx_ = (GLXContext)hglrc;
  if (intCtx_ != nullptr) {
    glXDestroyContext_(Dpy_, intCtx_);
  }

  int attribList[] = {GLX_RGBA, None};
  XVisualInfo* vis;
  int defaultScreen = DefaultScreen(intDpy_);
  if (!(vis = glXChooseVisual_(intDpy_, defaultScreen, attribList))) {
    return false;
  }
  intCtx_ = glXCreateContext_(intDpy_, vis, origCtx_, true);
  XFree_(vis);

  if (!intCtx_) {
    return false;
  }
#endif
  return true;
}

void amd::GLFunctions::WaitCurrentGlContext(const amd::Context::Info& info) const {
  if (IsCurrentGlContext(info)) {
    glFinish_();
  }
}


bool amd::GLFunctions::init(intptr_t hdc, intptr_t hglrc) {
  if (isEGL_) {
    eglDisplay_ = (EGLDisplay)hdc;
    eglOriginalContext_ = (EGLContext)hglrc;
    return true;
  }

#ifdef _WIN32
  DWORD err;

  if (missed_) {
    return false;
  }

  if (!hdc) {
    hDC_ = wglGetCurrentDC_();
  } else {
    hDC_ = (HDC)hdc;
  }
  hOrigGLRC_ = (HGLRC)hglrc;
  if (!(hIntGLRC_ = wglCreateContext_(hDC_))) {
    err = GetLastError();
    return false;
  }
  if (!wglShareLists_(hOrigGLRC_, hIntGLRC_)) {
    err = GetLastError();
    return false;
  }

  bool makeCurrentNull = false;

  if (wglGetCurrentContext_() == nullptr) {
    wglMakeCurrent_(hDC_, hIntGLRC_);

    makeCurrentNull = true;
  }

// Initialize pointers to GL functions
#include "gl_functions.hpp"

  if (makeCurrentNull) {
    wglMakeCurrent_(nullptr, nullptr);
  }

  if (missed_ == 0) {
    return true;
  }
#else  //!_WIN32
  if (!missed_) {
    if (!hdc) {
      Dpy_ = glXGetCurrentDisplay_();
    } else {
      Dpy_ = (Display*)hdc;
    }
    Drawable_ = glXGetCurrentDrawable_();
    origCtx_ = (GLXContext)hglrc;

    int attribList[] = {GLX_RGBA, None};
    if (!(intDpy_ = XOpenDisplay_(DisplayString(Dpy_)))) {
#if defined(ATI_ARCH_X86)
      asm("int $3");
#endif
    }
    intDrawable_ = DefaultRootWindow(intDpy_);

    XVisualInfo* vis;
    int defaultScreen = DefaultScreen(intDpy_);
    if (!(vis = glXChooseVisual_(intDpy_, defaultScreen, attribList))) {
      return false;
    }
    intCtx_ = glXCreateContext_(intDpy_, vis, origCtx_, true);
    XFree_(vis);

    if (!intCtx_) {
      return false;
    }
    return true;
  }
#endif  //!_WIN32
  return false;
}

bool amd::GLFunctions::setIntEnv() {
  if (isEGL_) {
    return true;
  }
#ifdef _WIN32
  // Save current DC and GLRC
  tempDC_ = wglGetCurrentDC_();
  tempGLRC_ = wglGetCurrentContext_();
  // Set internal DC and GLRC
  if (tempDC_ != getDC() || tempGLRC_ != getIntGLRC()) {
    if (!wglMakeCurrent_(getDC(), getIntGLRC())) {
      DWORD err = GetLastError();
      LogWarning("cannot set internal GL environment");
      return false;
    }
  }
#else   //!_WIN32
  tempDpy_ = glXGetCurrentDisplay_();
  tempDrawable_ = glXGetCurrentDrawable_();
  tempCtx_ = glXGetCurrentContext_();
  // Set internal Display and GLXContext
  if (tempDpy_ != getDpy() || tempCtx_ != getIntCtx()) {
    if (!glXMakeCurrent_(getIntDpy(), getIntDrawable(), getIntCtx())) {
      LogWarning("cannot set internal GL environment");
      return false;
    }
  }
#endif  //!_WIN32

  return true;
}

bool amd::GLFunctions::restoreEnv() {
  if (isEGL_) {
    // eglMakeCurrent( );
    return true;
  }
#ifdef _WIN32
  // Restore original DC and GLRC
  if (!wglMakeCurrent_(tempDC_, tempGLRC_)) {
    DWORD err = GetLastError();
    LogWarning("cannot restore original GL environment");
    return false;
  }
#else   //!_WIN32
  // Restore Display and GLXContext
  if (tempDpy_) {
    if (!glXMakeCurrent_(tempDpy_, tempDrawable_, tempCtx_)) {
      LogWarning("cannot restore original GL environment");
      return false;
    }
  } else {
    // Just release internal context
    if (!glXMakeCurrent_(getIntDpy(), None, nullptr)) {
      LogWarning("cannot reelase internal GL environment");
      return false;
    }
  }
#endif  //!_WIN32

  return true;
}


//! Function getCLFormatFromGL returns "true" if GL format
//! is compatible with CL format, "false" otherwise.
bool amd::getCLFormatFromGL(const amd::Context& amdContext, GLint gliInternalFormat,
                            cl_image_format* pclImageFormat, int* piBytesPerPixel,
                            cl_mem_flags flags) {
  bool bRetVal = false;

  /*
  Available values for "image_channel_order"
  ==========================================
  CL_R
  CL_A
  CL_INTENSITY
  CL_LUMINANCE
  CL_RG
  CL_RA
  CL_RGB
  CL_RGBA
  CL_ARGB
  CL_BGRA

  Available values for "image_channel_data_type"
  ==============================================
  CL_SNORM_INT8
  CL_SNORM_INT16
  CL_UNORM_INT8
  CL_UNORM_INT16
  CL_UNORM_SHORT_565
  CL_UNORM_SHORT_555
  CL_UNORM_INT_101010
  CL_SIGNED_INT8
  CL_SIGNED_INT16
  CL_SIGNED_INT32
  CL_UNSIGNED_INT8
  CL_UNSIGNED_INT16
  CL_UNSIGNED_INT32
  CL_HALF_FLOAT
  CL_FLOAT
  */

  switch (gliInternalFormat) {
    case GL_RGB10_EXT:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT_101010;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RGB10_A2:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT_101010;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_BGR8_ATI:
    case GL_BGRA8_ATI:
      pclImageFormat->image_channel_order = CL_BGRA;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT8;  // CL_UNSIGNED_INT8;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_ALPHA8:
      pclImageFormat->image_channel_order = CL_A;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT8;  // CL_UNSIGNED_INT8;
      *piBytesPerPixel = 1;
      bRetVal = true;
      break;

    case GL_R8:
    case GL_R8UI:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_R8) ? CL_UNORM_INT8 : CL_UNSIGNED_INT8;
      *piBytesPerPixel = 1;
      bRetVal = true;
      break;

    case GL_R8I:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT8;
      *piBytesPerPixel = 1;
      bRetVal = true;
      break;

    case GL_RG8:
    case GL_RG8UI:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RG8) ? CL_UNORM_INT8 : CL_UNSIGNED_INT8;
      *piBytesPerPixel = 2;
      bRetVal = true;
      break;

    case GL_RG8I:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT8;
      *piBytesPerPixel = 2;
      bRetVal = true;
      break;

    case GL_RGB8:
    case GL_RGB8UI:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RGB8) ? CL_UNORM_INT8 : CL_UNSIGNED_INT8;
      *piBytesPerPixel = 3;
      bRetVal = true;
      break;

    case GL_RGB8I:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT8;
      *piBytesPerPixel = 3;
      bRetVal = true;
      break;

    case GL_RGBA:
    case GL_RGBA8:
    case GL_RGBA8UI:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RGBA8UI) ? CL_UNSIGNED_INT8 : CL_UNORM_INT8;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RGBA8I:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT8;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_R16:
    case GL_R16UI:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_R16) ? CL_UNORM_INT16 : CL_UNSIGNED_INT16;
      bRetVal = true;
      *piBytesPerPixel = 2;
      break;

    case GL_R16I:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT16;
      *piBytesPerPixel = 2;
      bRetVal = true;
      break;

    case GL_R16F:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_HALF_FLOAT;
      *piBytesPerPixel = 2;
      bRetVal = true;
      break;

    case GL_RG16:
    case GL_RG16UI:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RG16) ? CL_UNORM_INT16 : CL_UNSIGNED_INT16;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RG16I:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT16;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RG16F:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_HALF_FLOAT;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RGB16:
    case GL_RGB16UI:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RGB16) ? CL_UNORM_INT16 : CL_UNSIGNED_INT16;
      *piBytesPerPixel = 6;
      bRetVal = true;
      break;

    case GL_RGB16I:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT16;
      *piBytesPerPixel = 6;
      bRetVal = true;
      break;

    case GL_RGB16F:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_HALF_FLOAT;
      *piBytesPerPixel = 6;
      bRetVal = true;
      break;

    case GL_RGBA16:
    case GL_RGBA16UI:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type =
          (gliInternalFormat == GL_RGBA16) ? CL_UNORM_INT16 : CL_UNSIGNED_INT16;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_RGBA16I:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT16;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_RGBA16F:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_HALF_FLOAT;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_R32I:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT32;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_R32UI:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_UNSIGNED_INT32;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_R32F:
      pclImageFormat->image_channel_order = CL_R;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;

    case GL_RG32I:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT32;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_RG32UI:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_UNSIGNED_INT32;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_RG32F:
      pclImageFormat->image_channel_order = CL_RG;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 8;
      bRetVal = true;
      break;

    case GL_RGB32I:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT32;
      *piBytesPerPixel = 12;
      bRetVal = true;
      break;

    case GL_RGB32UI:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_UNSIGNED_INT32;
      *piBytesPerPixel = 12;
      bRetVal = true;
      break;

    case GL_RGB32F:
      pclImageFormat->image_channel_order = CL_RGB;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 12;
      bRetVal = true;
      break;

    case GL_RGBA32I:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_SIGNED_INT32;
      *piBytesPerPixel = 16;
      bRetVal = true;
      break;

    case GL_RGBA32UI:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_UNSIGNED_INT32;
      *piBytesPerPixel = 16;
      bRetVal = true;
      break;

    case GL_RGBA32F:
      pclImageFormat->image_channel_order = CL_RGBA;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 16;
      bRetVal = true;
      break;
    case GL_DEPTH_COMPONENT32F:
      pclImageFormat->image_channel_order = CL_DEPTH;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;
    case GL_DEPTH_COMPONENT16:
      pclImageFormat->image_channel_order = CL_DEPTH;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT16;
      *piBytesPerPixel = 2;
      bRetVal = true;
      break;
    case GL_DEPTH24_STENCIL8:
      pclImageFormat->image_channel_order = CL_DEPTH_STENCIL;
      pclImageFormat->image_channel_data_type = CL_UNORM_INT24;
      *piBytesPerPixel = 4;
      bRetVal = true;
      break;
    case GL_DEPTH32F_STENCIL8:
      pclImageFormat->image_channel_order = CL_DEPTH_STENCIL;
      pclImageFormat->image_channel_data_type = CL_FLOAT;
      *piBytesPerPixel = 5;
      bRetVal = true;
      break;
    default:
      LogWarning("unsupported GL internal format");
      break;
  }
  amd::Image::Format imageFormat(*pclImageFormat);
  if (bRetVal && !imageFormat.isSupported(amdContext, 0, flags)) {
    bRetVal = false;
  }
  return bRetVal;
}