kc3-lang/angle/util/EGLPlatformParameters.h

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• Author : Geoff Lang
  Date : 2021-03-09 13:46:13
  Hash : 18c6d628
  Message : GL: Support VAOs without native VAOs. Share the default VAO state between all frontend VAO when there is no native VAO support. Forcefully sync state every time a new frontend VAO is bound. Bug: angleproject:5577, chromium:1167179 Change-Id: Ieaedb5108ad28fc78e7e58b74495639c5246bb05 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2665266 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Peng Huang <penghuang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

• util/EGLPlatformParameters.h

• //
  // Copyright 2018 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.
  //
  // EGLPlatformParameters: Basic description of an EGL device.
  
  #ifndef UTIL_EGLPLATFORMPARAMETERS_H_
  #define UTIL_EGLPLATFORMPARAMETERS_H_
  
  #include "util/util_gl.h"
  
  #include <tuple>
  
  namespace angle
  {
  struct PlatformMethods;
  
  // The GLES driver type determines what shared object we use to load the GLES entry points.
  // AngleEGL loads from ANGLE's version of libEGL, libGLESv2, and libGLESv1_CM.
  // SystemEGL uses the system copies of libEGL, libGLESv2, and libGLESv1_CM.
  // SystemWGL loads Windows GL with the GLES compatiblity extensions. See util/WGLWindow.h.
  enum class GLESDriverType
  {
      AngleEGL,
      SystemEGL,
      SystemWGL,
  };
  }  // namespace angle
  
  struct EGLPlatformParameters
  {
      EGLPlatformParameters() = default;
  
      explicit EGLPlatformParameters(EGLint renderer) : renderer(renderer) {}
  
      EGLPlatformParameters(EGLint renderer,
                            EGLint majorVersion,
                            EGLint minorVersion,
                            EGLint deviceType)
          : renderer(renderer),
            majorVersion(majorVersion),
            minorVersion(minorVersion),
            deviceType(deviceType)
      {}
  
      EGLPlatformParameters(EGLint renderer,
                            EGLint majorVersion,
                            EGLint minorVersion,
                            EGLint deviceType,
                            EGLint presentPath)
          : renderer(renderer),
            majorVersion(majorVersion),
            minorVersion(minorVersion),
            deviceType(deviceType),
            presentPath(presentPath)
      {}
  
      auto tie() const
      {
          return std::tie(renderer, majorVersion, minorVersion, deviceType, presentPath,
                          debugLayersEnabled, contextVirtualization, transformFeedbackFeature,
                          allocateNonZeroMemoryFeature, emulateCopyTexImage2DFromRenderbuffers,
                          shaderStencilOutputFeature, genMultipleMipsPerPassFeature, platformMethods,
                          robustness, emulatedPrerotation, asyncCommandQueueFeatureVulkan,
                          hasExplicitMemBarrierFeatureMtl, hasCheapRenderPassFeatureMtl,
                          forceBufferGPUStorageFeatureMtl, supportsVulkanViewportFlip, emulatedVAOs);
      }
  
      EGLint renderer                               = EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE;
      EGLint majorVersion                           = EGL_DONT_CARE;
      EGLint minorVersion                           = EGL_DONT_CARE;
      EGLint deviceType                             = EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE;
      EGLint presentPath                            = EGL_DONT_CARE;
      EGLint debugLayersEnabled                     = EGL_DONT_CARE;
      EGLint contextVirtualization                  = EGL_DONT_CARE;
      EGLint robustness                             = EGL_DONT_CARE;
      EGLint transformFeedbackFeature               = EGL_DONT_CARE;
      EGLint allocateNonZeroMemoryFeature           = EGL_DONT_CARE;
      EGLint emulateCopyTexImage2DFromRenderbuffers = EGL_DONT_CARE;
      EGLint shaderStencilOutputFeature             = EGL_DONT_CARE;
      EGLint genMultipleMipsPerPassFeature          = EGL_DONT_CARE;
      uint32_t emulatedPrerotation                  = 0;  // Can be 0, 90, 180 or 270
      EGLint asyncCommandQueueFeatureVulkan         = EGL_DONT_CARE;
      EGLint hasExplicitMemBarrierFeatureMtl        = EGL_DONT_CARE;
      EGLint hasCheapRenderPassFeatureMtl           = EGL_DONT_CARE;
      EGLint forceBufferGPUStorageFeatureMtl        = EGL_DONT_CARE;
      EGLint supportsVulkanViewportFlip             = EGL_DONT_CARE;
      EGLint emulatedVAOs                           = EGL_DONT_CARE;
      angle::PlatformMethods *platformMethods       = nullptr;
  };
  
  inline bool operator<(const EGLPlatformParameters &a, const EGLPlatformParameters &b)
  {
      return a.tie() < b.tie();
  }
  
  inline bool operator==(const EGLPlatformParameters &a, const EGLPlatformParameters &b)
  {
      return a.tie() == b.tie();
  }
  
  inline bool operator!=(const EGLPlatformParameters &a, const EGLPlatformParameters &b)
  {
      return a.tie() != b.tie();
  }
  
  #endif  // UTIL_EGLPLATFORMPARAMETERS_H_