kc3-lang/angle/src/libANGLE/renderer/vulkan/mac/DisplayVkMac.mm

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• Hash : 84bd9dad
  Author :
  Date : 2020-08-26T22:01:44
  

  Vulkan: Allow pbuffer usage if no window support
  
  Vulkan allows rendering to non-swapchain images, so pbuffers can always
  be supported on every config.  With this change, if the window system
  does not support a configuration, EGL_WINDOW_BIT is removed from the
  config instead of dropping the config entirely.
  
  Bug: chromium:1034840
  Change-Id: Ib972ed8ddf7660c327123fa83ae0674456cf2a35
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2378921
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: back sept 10 - Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/vulkan/mac/DisplayVkMac.mm

• //
  // Copyright 2019 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // DisplayVkMac.mm:
  //    Implements methods from DisplayVkMac
  //
  
  #include "libANGLE/renderer/vulkan/mac/DisplayVkMac.h"
  
  #include <vulkan/vulkan.h>
  
  #include "libANGLE/renderer/vulkan/RendererVk.h"
  #include "libANGLE/renderer/vulkan/mac/IOSurfaceSurfaceVkMac.h"
  #include "libANGLE/renderer/vulkan/mac/WindowSurfaceVkMac.h"
  #include "libANGLE/renderer/vulkan/vk_caps_utils.h"
  
  #import <Cocoa/Cocoa.h>
  
  namespace rx
  {
  
  DisplayVkMac::DisplayVkMac(const egl::DisplayState &state) : DisplayVk(state) {}
  
  bool DisplayVkMac::isValidNativeWindow(EGLNativeWindowType window) const
  {
      NSObject *layer = reinterpret_cast<NSObject *>(window);
      return [layer isKindOfClass:[CALayer class]];
  }
  
  SurfaceImpl *DisplayVkMac::createWindowSurfaceVk(const egl::SurfaceState &state,
                                                   EGLNativeWindowType window)
  {
      ASSERT(isValidNativeWindow(window));
      return new WindowSurfaceVkMac(state, window);
  }
  
  SurfaceImpl *DisplayVkMac::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                           EGLenum buftype,
                                                           EGLClientBuffer clientBuffer,
                                                           const egl::AttributeMap &attribs)
  {
      ASSERT(buftype == EGL_IOSURFACE_ANGLE);
  
      return new IOSurfaceSurfaceVkMac(state, clientBuffer, attribs, mRenderer);
  }
  
  egl::ConfigSet DisplayVkMac::generateConfigs()
  {
      constexpr GLenum kColorFormats[] = {GL_BGRA8_EXT, GL_BGRX8_ANGLEX};
      return egl_vk::GenerateConfigs(kColorFormats, egl_vk::kConfigDepthStencilFormats, this);
  }
  
  void DisplayVkMac::checkConfigSupport(egl::Config *config)
  {
      // TODO(geofflang): Test for native support and modify the config accordingly.
      // anglebug.com/2692
  }
  
  const char *DisplayVkMac::getWSIExtension() const
  {
      return VK_EXT_METAL_SURFACE_EXTENSION_NAME;
  }
  
  bool IsVulkanMacDisplayAvailable()
  {
      return true;
  }
  
  DisplayImpl *CreateVulkanMacDisplay(const egl::DisplayState &state)
  {
      return new DisplayVkMac(state);
  }
  
  void DisplayVkMac::generateExtensions(egl::DisplayExtensions *outExtensions) const
  {
      outExtensions->iosurfaceClientBuffer =
          getRenderer()->getFeatures().supportsExternalMemoryHost.enabled;
  
      DisplayVk::generateExtensions(outExtensions);
  }
  
  egl::Error DisplayVkMac::validateClientBuffer(const egl::Config *configuration,
                                                EGLenum buftype,
                                                EGLClientBuffer clientBuffer,
                                                const egl::AttributeMap &attribs) const
  {
      ASSERT(buftype == EGL_IOSURFACE_ANGLE);
  
      if (!IOSurfaceSurfaceVkMac::ValidateAttributes(this, clientBuffer, attribs))
      {
          return egl::EglBadAttribute();
      }
      return egl::NoError();
  }
  
  }  // namespace rx
  

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