Quelle  validationEGL.cpp   Sprache: C

//
// Copyright 2016 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.
//

// validationEGL.cpp: Validation functions for generic EGL entry point parameters

#include "libANGLE/validationEGL_autogen.h"

#include "common/utilities.h"
#include "libANGLE/Config.h"
#include "libANGLE/Context.h"
#include "libANGLE/Device.h"
#include "libANGLE/Display.h"
#include "libANGLE/EGLSync.h"
#include "libANGLE/Image.h"
#include "libANGLE/Stream.h"
#include "libANGLE/Surface.h"
#include "libANGLE/Texture.h"
#include "libANGLE/Thread.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/DisplayImpl.h"

#include <EGL/eglext.h>

namespace egl
{
namespace
{
size_t GetMaximumMipLevel(const gl::Context *context, gl::TextureType type)
{
    const gl::Caps &caps = context->getCaps();

    int maxDimension = 0;
    switch (type)
    {
        case gl::TextureType::_2D:
        case gl::TextureType::_2DArray:
        case gl::TextureType::_2DMultisample:
            maxDimension = caps.max2DTextureSize;
            break;
        case gl::TextureType::Rectangle:
            maxDimension = caps.maxRectangleTextureSize;
            break;
        case gl::TextureType::CubeMap:
            maxDimension = caps.maxCubeMapTextureSize;
            break;
        case gl::TextureType::_3D:
            maxDimension = caps.max3DTextureSize;
            break;

        default:
            UNREACHABLE();
    }

    return gl::log2(maxDimension);
}

bool TextureHasNonZeroMipLevelsSpecified(const gl::Context *context, const gl::Texture *texture)
{
    size_t maxMip = GetMaximumMipLevel(context, texture->getType());
    for (size_t level = 1; level < maxMip; level++)
    {
        if (texture->getType() == gl::TextureType::CubeMap)
        {
            for (gl::TextureTarget face : gl::AllCubeFaceTextureTargets())
            {
                if (texture->getFormat(face, level).valid())
                {
                    return true;
                }
            }
        }
        else
        {
            if (texture->getFormat(gl::NonCubeTextureTypeToTarget(texture->getType()), level)
                    .valid())
            {
                return true;
            }
        }
    }

    return false;
}

bool CubeTextureHasUnspecifiedLevel0Face(const gl::Texture *texture)
{
    ASSERT(texture->getType() == gl::TextureType::CubeMap);
    for (gl::TextureTarget face : gl::AllCubeFaceTextureTargets())
    {
        if (!texture->getFormat(face, 0).valid())
        {
            return true;
        }
    }

    return false;
}

bool ValidateStreamAttribute(const ValidationContext *val,
                             const EGLAttrib attribute,
                             const EGLAttrib value,
                             const DisplayExtensions &extensions)
{
    switch (attribute)
    {
        case EGL_STREAM_STATE_KHR:
        case EGL_PRODUCER_FRAME_KHR:
        case EGL_CONSUMER_FRAME_KHR:
            val->setError(EGL_BAD_ACCESS, "Attempt to initialize readonly parameter");
            return false;
        case EGL_CONSUMER_LATENCY_USEC_KHR:
            // Technically not in spec but a latency < 0 makes no sense so we check it
            if (value < 0)
            {
                val->setError(EGL_BAD_PARAMETER, "Latency must be positive");
                return false;
            }
            break;
        case EGL_CONSUMER_ACQUIRE_TIMEOUT_USEC_KHR:
            if (!extensions.streamConsumerGLTexture)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Consumer GL extension not enabled");
                return false;
            }
            // Again not in spec but it should be positive anyways
            if (value < 0)
            {
                val->setError(EGL_BAD_PARAMETER, "Timeout must be positive");
                return false;
            }
            break;
        default:
            val->setError(EGL_BAD_ATTRIBUTE, "Invalid stream attribute");
            return false;
    }
    return true;
}

bool ValidateCreateImageMipLevelCommon(const ValidationContext *val,
                                       const gl::Context *context,
                                       const gl::Texture *texture,
                                       EGLAttrib level)
{
    // Note that the spec EGL_create_image spec does not explicitly specify an error
    // when the level is outside the base/max level range, but it does mention that the
    // level "must be a part of the complete texture object <buffer>". It can be argued
    // that out-of-range levels are not a part of the complete texture.
    const GLuint effectiveBaseLevel = texture->getTextureState().getEffectiveBaseLevel();
    if (level > 0 &&
        (!texture->isMipmapComplete() || static_cast<GLuint>(level) < effectiveBaseLevel ||
         static_cast<GLuint>(level) > texture->getTextureState().getMipmapMaxLevel()))
    {
        val->setError(EGL_BAD_PARAMETER, "texture must be complete if level is non-zero.");
        return false;
    }

    if (level == 0 && !texture->isMipmapComplete() &&
        TextureHasNonZeroMipLevelsSpecified(context, texture))
    {
        val->setError(EGL_BAD_PARAMETER,
                      "if level is zero and the texture is incomplete, it must "
                      "have no mip levels specified except zero.");
        return false;
    }

    return true;
}

bool ValidateConfigAttribute(const ValidationContext *val,
                             const Display *display,
                             EGLAttrib attribute)
{
    switch (attribute)
    {
        case EGL_BUFFER_SIZE:
        case EGL_ALPHA_SIZE:
        case EGL_BLUE_SIZE:
        case EGL_GREEN_SIZE:
        case EGL_RED_SIZE:
        case EGL_DEPTH_SIZE:
        case EGL_STENCIL_SIZE:
        case EGL_CONFIG_CAVEAT:
        case EGL_CONFIG_ID:
        case EGL_LEVEL:
        case EGL_NATIVE_RENDERABLE:
        case EGL_NATIVE_VISUAL_ID:
        case EGL_NATIVE_VISUAL_TYPE:
        case EGL_SAMPLES:
        case EGL_SAMPLE_BUFFERS:
        case EGL_SURFACE_TYPE:
        case EGL_TRANSPARENT_TYPE:
        case EGL_TRANSPARENT_BLUE_VALUE:
        case EGL_TRANSPARENT_GREEN_VALUE:
        case EGL_TRANSPARENT_RED_VALUE:
        case EGL_BIND_TO_TEXTURE_RGB:
        case EGL_BIND_TO_TEXTURE_RGBA:
        case EGL_MIN_SWAP_INTERVAL:
        case EGL_MAX_SWAP_INTERVAL:
        case EGL_LUMINANCE_SIZE:
        case EGL_ALPHA_MASK_SIZE:
        case EGL_COLOR_BUFFER_TYPE:
        case EGL_RENDERABLE_TYPE:
        case EGL_MATCH_NATIVE_PIXMAP:
        case EGL_CONFORMANT:
        case EGL_MAX_PBUFFER_WIDTH:
        case EGL_MAX_PBUFFER_HEIGHT:
        case EGL_MAX_PBUFFER_PIXELS:
            break;

        case EGL_OPTIMAL_SURFACE_ORIENTATION_ANGLE:
            if (!display->getExtensions().surfaceOrientation)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_ANGLE_surface_orientation is not enabled.");
                return false;
            }
            break;

        case EGL_COLOR_COMPONENT_TYPE_EXT:
            if (!display->getExtensions().pixelFormatFloat)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_EXT_pixel_format_float is not enabled.");
                return false;
            }
            break;

        case EGL_RECORDABLE_ANDROID:
            if (!display->getExtensions().recordable)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_ANDROID_recordable is not enabled.");
                return false;
            }
            break;

        case EGL_FRAMEBUFFER_TARGET_ANDROID:
            if (!display->getExtensions().framebufferTargetANDROID)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_ANDROID_framebuffer_target is not enabled.");
                return false;
            }
            break;

        case EGL_BIND_TO_TEXTURE_TARGET_ANGLE:
            if (!display->getExtensions().iosurfaceClientBuffer)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_ANGLE_iosurface_client_buffer is not enabled.");
                return false;
            }
            break;

        case EGL_Y_INVERTED_NOK:
            if (!display->getExtensions().textureFromPixmapNOK)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_NOK_texture_from_pixmap is not enabled.");
                return false;
            }
            break;

        case EGL_MATCH_FORMAT_KHR:
            if (!display->getExtensions().lockSurface3KHR)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EGL_KHR_lock_surface3 is not enabled.");
                return false;
            }
            break;

        default:
            val->setError(EGL_BAD_ATTRIBUTE, "Unknown attribute: 0x%04" PRIxPTR "X", attribute);
            return false;
    }

    return true;
}

bool ValidateConfigAttributeValue(const ValidationContext *val,
                                  const Display *display,
                                  EGLAttrib attribute,
                                  EGLAttrib value)
{
    switch (attribute)
    {

        case EGL_BIND_TO_TEXTURE_RGB:
        case EGL_BIND_TO_TEXTURE_RGBA:
            switch (value)
            {
                case EGL_DONT_CARE:
                case EGL_TRUE:
                case EGL_FALSE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE, "EGL_bind_to_texture invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_COLOR_BUFFER_TYPE:
            switch (value)
            {
                case EGL_RGB_BUFFER:
                case EGL_LUMINANCE_BUFFER:
                // EGL_DONT_CARE doesn't match the spec, but does match dEQP usage
                case EGL_DONT_CARE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_color_buffer_type invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_NATIVE_RENDERABLE:
            switch (value)
            {
                case EGL_DONT_CARE:
                case EGL_TRUE:
                case EGL_FALSE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_native_renderable invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_TRANSPARENT_TYPE:
            switch (value)
            {
                case EGL_NONE:
                case EGL_TRANSPARENT_RGB:
                // EGL_DONT_CARE doesn't match the spec, but does match dEQP usage
                case EGL_DONT_CARE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE, "EGL_transparent_type invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_RECORDABLE_ANDROID:
            switch (value)
            {
                case EGL_TRUE:
                case EGL_FALSE:
                case EGL_DONT_CARE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_RECORDABLE_ANDROID invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_COLOR_COMPONENT_TYPE_EXT:
            switch (value)
            {
                case EGL_COLOR_COMPONENT_TYPE_FIXED_EXT:
                case EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT:
                case EGL_DONT_CARE:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_COLOR_COMPONENT_TYPE_EXT invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        case EGL_MATCH_FORMAT_KHR:
            switch (value)
            {
                case EGL_FORMAT_RGB_565_KHR:
                case EGL_FORMAT_RGBA_8888_KHR:
                case EGL_FORMAT_RGB_565_EXACT_KHR:
                case EGL_FORMAT_RGBA_8888_EXACT_KHR:
                    break;
                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_KHR_lock_surface3 invalid attribute: 0x%X",
                                  static_cast<uint32_t>(value));
                    return false;
            }
            break;

        default:
            break;
    }

    return true;
}

bool ValidateConfigAttributes(const ValidationContext *val,
                              const Display *display,
                              const AttributeMap &attributes)
{
    ANGLE_VALIDATION_TRY(attributes.validate(val, display, ValidateConfigAttribute));

    for (const auto &attrib : attributes)
    {
        EGLAttrib pname = attrib.first;
        EGLAttrib value = attrib.second;
        ANGLE_VALIDATION_TRY(ValidateConfigAttributeValue(val, display, pname, value));
    }

    return true;
}

bool ValidateColorspaceAttribute(const ValidationContext *val,
                                 const DisplayExtensions &displayExtensions,
                                 EGLAttrib colorSpace)
{
    switch (colorSpace)
    {
        case EGL_GL_COLORSPACE_SRGB:
            break;
        case EGL_GL_COLORSPACE_LINEAR:
            break;
        case EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT:
            if (!displayExtensions.glColorspaceDisplayP3Linear &&
                !displayExtensions.eglColorspaceAttributePassthroughANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EXT_gl_colorspace_display_p3_linear is not available.");
                return false;
            }
            break;
        case EGL_GL_COLORSPACE_DISPLAY_P3_EXT:
            if (!displayExtensions.glColorspaceDisplayP3 &&
                !displayExtensions.eglColorspaceAttributePassthroughANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EXT_gl_colorspace_display_p3 is not available.");
                return false;
            }
            break;
        case EGL_GL_COLORSPACE_DISPLAY_P3_PASSTHROUGH_EXT:
            if (!displayExtensions.glColorspaceDisplayP3Passthrough &&
                !displayExtensions.eglColorspaceAttributePassthroughANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_EXT_gl_colorspace_display_p3_passthrough is not available.");
                return false;
            }
            break;
        case EGL_GL_COLORSPACE_SCRGB_EXT:
            if (!displayExtensions.glColorspaceScrgb &&
                !displayExtensions.eglColorspaceAttributePassthroughANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "EXT_gl_colorspace_scrgb is not available.");
                return false;
            }
            break;
        case EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT:
            if (!displayExtensions.glColorspaceScrgbLinear &&
                !displayExtensions.eglColorspaceAttributePassthroughANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EXT_gl_colorspace_scrgb_linear is not available.");
                return false;
            }
            break;
        default:
            val->setError(EGL_BAD_ATTRIBUTE);
            return false;
    }
    return true;
}
bool ValidatePlatformType(const ValidationContext *val,
                          const ClientExtensions &clientExtensions,
                          EGLAttrib platformType)
{
    switch (platformType)
    {
        case EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE:
            break;

        case EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE:
        case EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE:
            if (!clientExtensions.platformANGLED3D)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Direct3D platform is unsupported.");
                return false;
            }
            break;

        case EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE:
        case EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE:
            if (!clientExtensions.platformANGLEOpenGL)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "OpenGL platform is unsupported.");
                return false;
            }
            break;

        case EGL_PLATFORM_ANGLE_TYPE_NULL_ANGLE:
            if (!clientExtensions.platformANGLENULL)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Display type EGL_PLATFORM_ANGLE_TYPE_NULL_ANGLE "
                              "requires EGL_ANGLE_platform_angle_null.");
                return false;
            }
            break;

        case EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE:
            if (!clientExtensions.platformANGLEVulkan)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Vulkan platform is unsupported.");
                return false;
            }
            break;

        case EGL_PLATFORM_ANGLE_TYPE_METAL_ANGLE:
            if (!clientExtensions.platformANGLEMetal)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Metal platform is unsupported.");
                return false;
            }
            break;

        default:
            val->setError(EGL_BAD_ATTRIBUTE, "Unknown platform type.");
            return false;
    }

    return true;
}

bool ValidateGetPlatformDisplayCommon(const ValidationContext *val,
                                      EGLenum platform,
                                      const void *native_display,
                                      const AttributeMap &attribMap)
{
    const ClientExtensions &clientExtensions = Display::GetClientExtensions();

    switch (platform)
    {
        case EGL_PLATFORM_ANGLE_ANGLE:
            if (!clientExtensions.platformANGLE)
            {
                val->setError(EGL_BAD_PARAMETER, "Platform ANGLE extension is not active");
                return false;
            }
            break;
        case EGL_PLATFORM_DEVICE_EXT:
            if (!clientExtensions.platformDevice)
            {
                val->setError(EGL_BAD_PARAMETER, "Platform Device extension is not active");
                return false;
            }
            break;
        case EGL_PLATFORM_GBM_KHR:
            if (!clientExtensions.platformGbmKHR)
            {
                val->setError(EGL_BAD_PARAMETER, "Platform GBM extension is not active");
                return false;
            }
            break;
        case EGL_PLATFORM_WAYLAND_EXT:
            if (!clientExtensions.platformWaylandEXT)
            {
                val->setError(EGL_BAD_PARAMETER, "Platform Wayland extension is not active");
                return false;
            }
            break;
        default:
            val->setError(EGL_BAD_CONFIG, "Bad platform type.");
            return false;
    }

    attribMap.initializeWithoutValidation();

    if (platform != EGL_PLATFORM_DEVICE_EXT)
    {
        EGLAttrib platformType       = EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE;
        bool enableAutoTrimSpecified = false;
        bool enableD3D11on12         = false;
        bool presentPathSpecified    = false;
        bool luidSpecified           = false;
        bool deviceIdSpecified       = false;

        Optional<EGLAttrib> majorVersion;
        Optional<EGLAttrib> minorVersion;
        Optional<EGLAttrib> deviceType;
        Optional<EGLAttrib> eglHandle;

        for (const auto &curAttrib : attribMap)
        {
            const EGLAttrib value = curAttrib.second;

            switch (curAttrib.first)
            {
                case EGL_PLATFORM_ANGLE_TYPE_ANGLE:
                {
                    ANGLE_VALIDATION_TRY(ValidatePlatformType(val, clientExtensions, value));
                    platformType = value;
                    break;
                }

                case EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE:
                    if (value != EGL_DONT_CARE)
                    {
                        majorVersion = value;
                    }
                    break;

                case EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE:
                    if (value != EGL_DONT_CARE)
                    {
                        minorVersion = value;
                    }
                    break;

                case EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE:
                    switch (value)
                    {
                        case EGL_TRUE:
                        case EGL_FALSE:
                            break;
                        default:
                            val->setError(EGL_BAD_ATTRIBUTE, "Invalid automatic trim attribute");
                            return false;
                    }
                    enableAutoTrimSpecified = true;
                    break;

                case EGL_PLATFORM_ANGLE_D3D11ON12_ANGLE:
                    if (!clientExtensions.platformANGLED3D ||
                        !clientExtensions.platformANGLED3D11ON12)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "EGL_PLATFORM_ANGLE_D3D11ON12_ANGLE extension not active.");
                        return false;
                    }

                    switch (value)
                    {
                        case EGL_TRUE:
                        case EGL_FALSE:
                            break;
                        default:
                            val->setError(EGL_BAD_ATTRIBUTE, "Invalid D3D11on12 attribute");
                            return false;
                    }
                    enableD3D11on12 = true;
                    break;

                case EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE:
                    if (!clientExtensions.experimentalPresentPath)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "EGL_ANGLE_experimental_present_path extension not active");
                        return false;
                    }

                    switch (value)
                    {
                        case EGL_EXPERIMENTAL_PRESENT_PATH_FAST_ANGLE:
                        case EGL_EXPERIMENTAL_PRESENT_PATH_COPY_ANGLE:
                            break;
                        default:
                            val->setError(EGL_BAD_ATTRIBUTE,
                                          "Invalid value for EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE");
                            return false;
                    }
                    presentPathSpecified = true;
                    break;

                case EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE:
                    switch (value)
                    {
                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE:
                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE:
                            break;

                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE:
                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_REFERENCE_ANGLE:
                            if (!clientExtensions.platformANGLED3D)
                            {
                                val->setError(EGL_BAD_ATTRIBUTE,
                                              "EGL_ANGLE_platform_angle_d3d is not supported");
                                return false;
                            }
                            break;

                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_EGL_ANGLE:
                            if (!clientExtensions.platformANGLEDeviceTypeEGLANGLE)
                            {
                                val->setError(EGL_BAD_ATTRIBUTE,
                                              "EGL_ANGLE_platform_angle_device_type_"
                                              "egl_angle is not supported");
                                return false;
                            }
                            break;

                        case EGL_PLATFORM_ANGLE_DEVICE_TYPE_SWIFTSHADER_ANGLE:
                            if (!clientExtensions.platformANGLEDeviceTypeSwiftShader)
                            {
                                val->setError(EGL_BAD_ATTRIBUTE,
                                              "EGL_ANGLE_platform_angle_device_type_"
                                              "swiftshader is not supported");
                                return false;
                            }
                            break;

                        default:
                            val->setError(EGL_BAD_ATTRIBUTE,
                                          "Invalid value for "
                                          "EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE "
                                          "attrib");
                            return false;
                    }
                    deviceType = value;
                    break;

                case EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE:
                    if (!clientExtensions.platformANGLE)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "EGL_ANGLE_platform_angle extension not active");
                        return false;
                    }
                    if (value != EGL_TRUE && value != EGL_FALSE && value != EGL_DONT_CARE)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE "
                                      "must be EGL_TRUE, EGL_FALSE, or "
                                      "EGL_DONT_CARE.");
                        return false;
                    }
                    break;

                case EGL_PLATFORM_ANGLE_EGL_HANDLE_ANGLE:
                    if (value != EGL_DONT_CARE)
                    {
                        eglHandle = value;
                    }
                    break;

                case EGL_PLATFORM_ANGLE_D3D_LUID_HIGH_ANGLE:
                case EGL_PLATFORM_ANGLE_D3D_LUID_LOW_ANGLE:
                    luidSpecified = true;
                    break;
                case EGL_PLATFORM_ANGLE_DEVICE_CONTEXT_VOLATILE_EAGL_ANGLE:
                    // The property does not have an effect if it's not active, so do not check
                    // for non-support.
                    switch (value)
                    {
                        case EGL_FALSE:
                        case EGL_TRUE:
                            break;
                        default:
                            val->setError(EGL_BAD_ATTRIBUTE,
                                          "Invalid value for "
                                          "EGL_PLATFORM_ANGLE_DEVICE_CONTEXT_VOLATILE_"
                                          "EAGL_ANGLE attrib");
                            return false;
                    }
                    break;
                case EGL_PLATFORM_ANGLE_DEVICE_CONTEXT_VOLATILE_CGL_ANGLE:
                    // The property does not have an effect if it's not active, so do not check
                    // for non-support.
                    switch (value)
                    {
                        case EGL_FALSE:
                        case EGL_TRUE:
                            break;
                        default:
                            val->setError(EGL_BAD_ATTRIBUTE,
                                          "Invalid value for "
                                          "EGL_PLATFORM_ANGLE_DEVICE_CONTEXT_VOLATILE_"
                                          "CGL_ANGLE attrib");
                            return false;
                    }
                    break;
                case EGL_PLATFORM_ANGLE_DEVICE_ID_HIGH_ANGLE:
                case EGL_PLATFORM_ANGLE_DEVICE_ID_LOW_ANGLE:
                    if (!clientExtensions.platformANGLEDeviceId)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "EGL_ANGLE_platform_angle_device_id is not supported");
                        return false;
                    }
                    deviceIdSpecified = true;
                    break;
                default:
                    break;
            }
        }

        if (!majorVersion.valid() && minorVersion.valid())
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "Must specify major version if you specify a minor version.");
            return false;
        }

        if (deviceType == EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE &&
            platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_PLATFORM_ANGLE_DEVICE_TYPE_WARP_ANGLE requires a "
                          "device type of EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE.");
            return false;
        }

        if (enableAutoTrimSpecified && platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE "
                          "requires a device type of "
                          "EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE.");
            return false;
        }

        if (enableD3D11on12)
        {
            if (platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_PLATFORM_ANGLE_D3D11ON12_ANGLE "
                              "requires a platform type of "
                              "EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE.");
                return false;
            }

            if (deviceType.valid() && deviceType != EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE &&
                deviceType != EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_PLATFORM_ANGLE_D3D11ON12_ANGLE requires a device "
                              "type of EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE "
                              "or EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE");
                return false;
            }
        }

        if (presentPathSpecified && platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE requires a "
                          "device type of EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE.");
            return false;
        }

        if (luidSpecified)
        {
            if (platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_PLATFORM_ANGLE_D3D_LUID_HIGH_ANGLE and "
                              "EGL_PLATFORM_ANGLE_D3D_LUID_LOW_ANGLE "
                              "require a platform type of "
                              "EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE.");
                return false;
            }

            if (attribMap.get(EGL_PLATFORM_ANGLE_D3D_LUID_HIGH_ANGLE, 0) == 0 &&
                attribMap.get(EGL_PLATFORM_ANGLE_D3D_LUID_LOW_ANGLE, 0) == 0)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "If either EGL_PLATFORM_ANGLE_D3D_LUID_HIGH_ANGLE "
                              "and/or EGL_PLATFORM_ANGLE_D3D_LUID_LOW_ANGLE are "
                              "specified, at least one must non-zero.");
                return false;
            }
        }

        if (deviceIdSpecified)
        {
            if (attribMap.get(EGL_PLATFORM_ANGLE_DEVICE_ID_HIGH_ANGLE, 0) == 0 &&
                attribMap.get(EGL_PLATFORM_ANGLE_DEVICE_ID_LOW_ANGLE, 0) == 0)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "If either EGL_PLATFORM_ANGLE_DEVICE_ID_HIGH_ANGLE "
                              "and/or EGL_PLATFORM_ANGLE_DEVICE_ID_LOW_ANGLE are "
                              "specified, at least one must non-zero.");
                return false;
            }
        }

        if (deviceType.valid())
        {
            switch (deviceType.value())
            {
                case EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_REFERENCE_ANGLE:
                case EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE:
                    if (platformType != EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE &&
                        platformType != EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "This device type requires a "
                                      "platform type of EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE or "
                                      "EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE.");
                        return false;
                    }
                    break;

                case EGL_PLATFORM_ANGLE_DEVICE_TYPE_SWIFTSHADER_ANGLE:
                    if (platformType != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE)
                    {
                        val->setError(EGL_BAD_ATTRIBUTE,
                                      "This device type requires a "
                                      "platform type of EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE.");
                        return false;
                    }
                    break;

                default:
                    break;
            }
        }

        if (platformType == EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE)
        {
            if ((majorVersion.valid() && majorVersion.value() != 1) ||
                (minorVersion.valid() && minorVersion.value() != 0))
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE currently "
                              "only supports Vulkan 1.0.");
                return false;
            }
        }

        if (eglHandle.valid() && platformType != EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE &&
            platformType != EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_PLATFORM_ANGLE_EGL_HANDLE_ANGLE requires a "
                          "device type of EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE.");
            return false;
        }
    }
    else
    {
        const Device *eglDevice = static_cast<const Device *>(native_display);
        if (eglDevice == nullptr || !Device::IsValidDevice(eglDevice))
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "native_display should be a valid EGL device if "
                          "platform equals EGL_PLATFORM_DEVICE_EXT");
            return false;
        }
    }

    if (attribMap.contains(EGL_POWER_PREFERENCE_ANGLE))
    {
        if (!clientExtensions.displayPowerPreferenceANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "Attribute EGL_POWER_PREFERENCE_ANGLE "
                          "requires EGL_ANGLE_display_power_preference.");
            return false;
        }
        EGLAttrib value = attribMap.get(EGL_POWER_PREFERENCE_ANGLE, 0);
        if (value != EGL_LOW_POWER_ANGLE && value != EGL_HIGH_POWER_ANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_POWER_PREFERENCE_ANGLE must be "
                          "either EGL_LOW_POWER_ANGLE or EGL_HIGH_POWER_ANGLE.");
            return false;
        }
    }

    if (attribMap.contains(EGL_FEATURE_OVERRIDES_ENABLED_ANGLE))
    {
        if (!clientExtensions.featureControlANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE, "EGL_ANGLE_feature_control is not supported");
            return false;
        }
        else if (attribMap.get(EGL_FEATURE_OVERRIDES_ENABLED_ANGLE, 0) == 0)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_FEATURE_OVERRIDES_ENABLED_ANGLE must be a valid pointer");
            return false;
        }
    }
    if (attribMap.contains(EGL_FEATURE_OVERRIDES_DISABLED_ANGLE))
    {
        if (!clientExtensions.featureControlANGLE)
        {
            val->setError(EGL_BAD_ATTRIBUTE, "EGL_ANGLE_feature_control is not supported");
            return false;
        }
        else if (attribMap.get(EGL_FEATURE_OVERRIDES_DISABLED_ANGLE, 0) == 0)
        {
            val->setError(EGL_BAD_ATTRIBUTE,
                          "EGL_FEATURE_OVERRIDES_DISABLED_ANGLE must be a valid pointer");
            return false;
        }
    }

    return true;
}

bool ValidateStream(const ValidationContext *val, const Display *display, const Stream *stream)
{
    ANGLE_VALIDATION_TRY(ValidateDisplay(val, display));

    const DisplayExtensions &displayExtensions = display->getExtensions();
    if (!displayExtensions.stream)
    {
        val->setError(EGL_BAD_ACCESS, "Stream extension not active");
        return false;
    }

    if (stream == EGL_NO_STREAM_KHR || !display->isValidStream(stream))
    {
        val->setError(EGL_BAD_STREAM_KHR, "Invalid stream");
        return false;
    }

    return true;
}

bool ValidateLabeledObject(const ValidationContext *val,
                           const Display *display,
                           ObjectType objectType,
                           EGLObjectKHR object,
                           LabeledObject **outLabeledObject)
{
    switch (objectType)
    {
        case ObjectType::Context:
        {
            gl::Context *context = static_cast<gl::Context *>(object);
            ANGLE_VALIDATION_TRY(ValidateContext(val, display, context));
            *outLabeledObject = context;
            break;
        }

        case ObjectType::Display:
        {
            ANGLE_VALIDATION_TRY(ValidateDisplay(val, display));
            if (display != object)
            {
                if (val)
                {
                    val->setError(EGL_BAD_PARAMETER,
                                  "when object type is EGL_OBJECT_DISPLAY_KHR, the "
                                  "object must be the same as the display.");
                }
                return false;
            }

            *outLabeledObject = static_cast<Display *>(object);
            break;
        }

        case ObjectType::Image:
        {
            Image *image = static_cast<Image *>(object);
            ANGLE_VALIDATION_TRY(ValidateImage(val, display, image));
            *outLabeledObject = image;
            break;
        }

        case ObjectType::Stream:
        {
            Stream *stream = static_cast<Stream *>(object);
            ANGLE_VALIDATION_TRY(ValidateStream(val, display, stream));
            *outLabeledObject = stream;
            break;
        }

        case ObjectType::Surface:
        {
            Surface *surface = static_cast<Surface *>(object);
            ANGLE_VALIDATION_TRY(ValidateSurface(val, display, surface));
            *outLabeledObject = surface;
            break;
        }

        case ObjectType::Sync:
        {
            Sync *sync = static_cast<Sync *>(object);
            ANGLE_VALIDATION_TRY(ValidateSync(val, display, sync));
            *outLabeledObject = sync;
            break;
        }

        case ObjectType::Thread:
        {
            ASSERT(val);
            *outLabeledObject = val->eglThread;
            break;
        }

        default:
            if (val)
            {
                val->setError(EGL_BAD_PARAMETER, "unknown object type.");
            }
            return false;
    }

    return true;
}

// This is a common sub-check of Display status that's shared by multiple functions
bool ValidateDisplayPointer(const ValidationContext *val, const Display *display)
{
    if (display == EGL_NO_DISPLAY)
    {
        if (val)
        {
            val->setError(EGL_BAD_DISPLAY, "display is EGL_NO_DISPLAY.");
        }
        return false;
    }

    if (!Display::isValidDisplay(display))
    {
        if (val)
        {
            val->setError(EGL_BAD_DISPLAY, "display is not a valid display: 0x%p", display);
        }
        return false;
    }

    return true;
}

bool ValidCompositorTimingName(CompositorTiming name)
{
    switch (name)
    {
        case CompositorTiming::CompositeDeadline:
        case CompositorTiming::CompositInterval:
        case CompositorTiming::CompositToPresentLatency:
            return true;

        default:
            return false;
    }
}

bool ValidTimestampType(Timestamp timestamp)
{
    switch (timestamp)
    {
        case Timestamp::RequestedPresentTime:
        case Timestamp::RenderingCompleteTime:
        case Timestamp::CompositionLatchTime:
        case Timestamp::FirstCompositionStartTime:
        case Timestamp::LastCompositionStartTime:
        case Timestamp::FirstCompositionGPUFinishedTime:
        case Timestamp::DisplayPresentTime:
        case Timestamp::DequeueReadyTime:
        case Timestamp::ReadsDoneTime:
            return true;

        default:
            return false;
    }
}

bool ValidateCompatibleSurface(const ValidationContext *val,
                               const Display *display,
                               const gl::Context *context,
                               const Surface *surface)
{
    const Config *contextConfig = context->getConfig();
    const Config *surfaceConfig = surface->getConfig();

    if (context->getClientType() != EGL_OPENGL_API)
    {
        // Surface compatible with client API - only OPENGL_ES supported
        switch (context->getClientMajorVersion())
        {
            case 1:
                if (!(surfaceConfig->renderableType & EGL_OPENGL_ES_BIT))
                {
                    val->setError(EGL_BAD_MATCH, "Surface not compatible with OpenGL ES 1.x.");
                    return false;
                }
                break;
            case 2:
                if (!(surfaceConfig->renderableType & EGL_OPENGL_ES2_BIT))
                {
                    val->setError(EGL_BAD_MATCH, "Surface not compatible with OpenGL ES 2.x.");
                    return false;
                }
                break;
            case 3:
                if (!(surfaceConfig->renderableType & (EGL_OPENGL_ES2_BIT | EGL_OPENGL_ES3_BIT)))
                {
                    val->setError(EGL_BAD_MATCH, "Surface not compatible with OpenGL ES 3.x.");
                    return false;
                }
                break;
            default:
                val->setError(EGL_BAD_MATCH, "Surface not compatible with Context API.");
                return false;
        }
    }
    else
    {
        if (!(surfaceConfig->renderableType & EGL_OPENGL_BIT))
        {
            val->setError(EGL_BAD_MATCH, "Surface not compatible with OpenGL Desktop.");
            return false;
        }
    }

    // EGL KHR no config context
    if (context->getConfig() == EGL_NO_CONFIG_KHR)
    {
        const DisplayExtensions &displayExtensions = display->getExtensions();
        if (displayExtensions.noConfigContext)
        {
            return true;
        }
        val->setError(EGL_BAD_MATCH, "Context with no config is not supported.");
        return false;
    }

    // Config compatibility is defined in section 2.2 of the EGL 1.5 spec

    bool colorBufferCompat = surfaceConfig->colorBufferType == contextConfig->colorBufferType;
    if (!colorBufferCompat)
    {
        val->setError(EGL_BAD_MATCH, "Color buffer types are not compatible.");
        return false;
    }

    bool colorCompat = surfaceConfig->redSize == contextConfig->redSize &&
                       surfaceConfig->greenSize == contextConfig->greenSize &&
                       surfaceConfig->blueSize == contextConfig->blueSize &&
                       surfaceConfig->alphaSize == contextConfig->alphaSize &&
                       surfaceConfig->luminanceSize == contextConfig->luminanceSize;
    if (!colorCompat)
    {
        val->setError(EGL_BAD_MATCH, "Color buffer sizes are not compatible.");
        return false;
    }

    bool componentTypeCompat =
        surfaceConfig->colorComponentType == contextConfig->colorComponentType;
    if (!componentTypeCompat)
    {
        val->setError(EGL_BAD_MATCH, "Color buffer component types are not compatible.");
        return false;
    }

    bool dsCompat = surfaceConfig->depthSize == contextConfig->depthSize &&
                    surfaceConfig->stencilSize == contextConfig->stencilSize;
    if (!dsCompat)
    {
        val->setError(EGL_BAD_MATCH, "Depth-stencil buffer types are not compatible.");
        return false;
    }

    bool surfaceTypeCompat = (surfaceConfig->surfaceType & contextConfig->surfaceType) != 0;
    if (!surfaceTypeCompat)
    {
        val->setError(EGL_BAD_MATCH, "Surface type is not compatible.");
        return false;
    }

    return true;
}

bool ValidateCreateSyncBase(const ValidationContext *val,
                            const Display *display,
                            EGLenum type,
                            const AttributeMap &attribs,
                            bool isExt)
{
    ANGLE_VALIDATION_TRY(ValidateDisplay(val, display));

    attribs.initializeWithoutValidation();

    gl::Context *currentContext  = val->eglThread->getContext();
    egl::Display *currentDisplay = currentContext ? currentContext->getDisplay() : nullptr;

    switch (type)
    {
        case EGL_SYNC_FENCE_KHR:
            if (!attribs.isEmpty())
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Invalid attribute");
                return false;
            }

            if (!display->getExtensions().fenceSync)
            {
                val->setError(EGL_BAD_MATCH, "EGL_KHR_fence_sync extension is not available");
                return false;
            }

            if (display != currentDisplay)
            {
                val->setError(EGL_BAD_MATCH,
                              "CreateSync can only be called on the current display");
                return false;
            }

            ANGLE_VALIDATION_TRY(ValidateContext(val, currentDisplay, currentContext));

            if (!currentContext->getExtensions().EGLSyncOES)
            {
                val->setError(EGL_BAD_MATCH,
                              "EGL_SYNC_FENCE_KHR cannot be used without "
                              "GL_OES_EGL_sync support.");
                return false;
            }
            break;

        case EGL_SYNC_NATIVE_FENCE_ANDROID:
            if (!display->getExtensions().fenceSync)
            {
                val->setError(EGL_BAD_MATCH, "EGL_KHR_fence_sync extension is not available");
                return false;
            }

            if (!display->getExtensions().nativeFenceSyncANDROID)
            {
                val->setError(EGL_BAD_DISPLAY,
                              "EGL_ANDROID_native_fence_sync extension is not available.");
                return false;
            }

            if (display != currentDisplay)
            {
                val->setError(EGL_BAD_MATCH,
                              "CreateSync can only be called on the current display");
                return false;
            }

            ANGLE_VALIDATION_TRY(ValidateContext(val, currentDisplay, currentContext));

            if (!currentContext->getExtensions().EGLSyncOES)
            {
                val->setError(EGL_BAD_MATCH,
                              "EGL_SYNC_FENCE_KHR cannot be used without "
                              "GL_OES_EGL_sync support.");
                return false;
            }

            for (const auto &attributeIter : attribs)
            {
                EGLAttrib attribute = attributeIter.first;

                switch (attribute)
                {
                    case EGL_SYNC_NATIVE_FENCE_FD_ANDROID:
                        break;

                    default:
                        val->setError(EGL_BAD_ATTRIBUTE, "Invalid attribute");
                        return false;
                }
            }
            break;

        case EGL_SYNC_REUSABLE_KHR:
            if (!attribs.isEmpty())
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Invalid attribute");
                return false;
            }

            if (!display->getExtensions().reusableSyncKHR)
            {
                val->setError(EGL_BAD_MATCH, "EGL_KHR_reusable_sync extension is not available.");
                return false;
            }
            break;

        case EGL_SYNC_METAL_SHARED_EVENT_ANGLE:
            if (!display->getExtensions().fenceSync)
            {
                val->setError(EGL_BAD_MATCH, "EGL_KHR_fence_sync extension is not available");
                return false;
            }

            if (!display->getExtensions().mtlSyncSharedEventANGLE)
            {
                val->setError(EGL_BAD_DISPLAY,
                              "EGL_ANGLE_metal_shared_event_sync is not available");
                return false;
            }

            if (display != currentDisplay)
            {
                val->setError(EGL_BAD_MATCH,
                              "CreateSync can only be called on the current display");
                return false;
            }

            ANGLE_VALIDATION_TRY(ValidateContext(val, currentDisplay, currentContext));

            // This should be implied by exposing EGL_KHR_fence_sync
            ASSERT(currentContext->getExtensions().EGLSyncOES);

            for (const auto &attributeIter : attribs)
            {
                EGLAttrib attribute = attributeIter.first;
                EGLAttrib value     = attributeIter.second;

                switch (attribute)
                {
                    case EGL_SYNC_METAL_SHARED_EVENT_OBJECT_ANGLE:
                        if (!value)
                        {
                            val->setError(EGL_BAD_ATTRIBUTE,
                                          "EGL_SYNC_METAL_SHARED_EVENT_ANGLE can't be NULL");
                            return false;
                        }
                        break;

                    case EGL_SYNC_METAL_SHARED_EVENT_SIGNAL_VALUE_LO_ANGLE:
                    case EGL_SYNC_METAL_SHARED_EVENT_SIGNAL_VALUE_HI_ANGLE:
                        break;

                    default:
                        val->setError(EGL_BAD_ATTRIBUTE, "Invalid attribute");
                        return false;
                }
            }
            break;

        default:
            if (isExt)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Invalid type parameter");
                return false;
            }
            else
            {
                val->setError(EGL_BAD_PARAMETER, "Invalid type parameter");
                return false;
            }
    }

    return true;
}

bool ValidateGetSyncAttribBase(const ValidationContext *val,
                               const Display *display,
                               const Sync *sync,
                               EGLint attribute)
{
    ANGLE_VALIDATION_TRY(ValidateSync(val, display, sync));

    switch (attribute)
    {
        case EGL_SYNC_CONDITION_KHR:
            switch (sync->getType())
            {
                case EGL_SYNC_FENCE_KHR:
                case EGL_SYNC_NATIVE_FENCE_ANDROID:
                case EGL_SYNC_METAL_SHARED_EVENT_ANGLE:
                    break;

                default:
                    val->setError(EGL_BAD_ATTRIBUTE,
                                  "EGL_SYNC_CONDITION_KHR is not valid for this sync type.");
                    return false;
            }
            break;

        // The following attributes are accepted by all types
        case EGL_SYNC_TYPE_KHR:
        case EGL_SYNC_STATUS_KHR:
            break;

        default:
            val->setError(EGL_BAD_ATTRIBUTE, "Invalid attribute");
            return false;
    }

    return true;
}

bool ValidateQueryDisplayAttribBase(const ValidationContext *val,
                                    const Display *display,
                                    const EGLint attribute)
{
    ANGLE_VALIDATION_TRY(ValidateDisplay(val, display));

    switch (attribute)
    {
        case EGL_DEVICE_EXT:
            if (!Display::GetClientExtensions().deviceQueryEXT)
            {
                val->setError(EGL_BAD_DISPLAY, "EGL_EXT_device_query extension is not available.");
                return false;
            }
            break;

        case EGL_FEATURE_COUNT_ANGLE:
            if (!Display::GetClientExtensions().featureControlANGLE)
            {
                val->setError(EGL_BAD_DISPLAY,
                              "EGL_ANGLE_feature_control extension is not available.");
                return false;
            }
            break;

        default:
            val->setError(EGL_BAD_ATTRIBUTE, "attribute is not valid.");
            return false;
    }

    return true;
}

bool ValidateCreateContextAttribute(const ValidationContext *val,
                                    const Display *display,
                                    EGLAttrib attribute)
{
    switch (attribute)
    {
        case EGL_CONTEXT_CLIENT_VERSION:
        case EGL_CONTEXT_MINOR_VERSION:
        case EGL_CONTEXT_FLAGS_KHR:
        case EGL_CONTEXT_OPENGL_DEBUG:
            break;

        case EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR:
            if (val->eglThread->getAPI() != EGL_OPENGL_API)
            {
                // Only valid for OpenGL (non-ES) contexts
                val->setError(EGL_BAD_ATTRIBUTE, "OpenGL profile mask requires an OpenGL context.");
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT:
            if (!display->getExtensions().createContextRobustness)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT:
            if (!display->getExtensions().createContextRobustness)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY:
        {
            // We either need to have -
            // 1. EGL 1.5 which added support for this as part of core spec
            // 2. EGL_KHR_create_context extension which requires EGL 1.4
            constexpr EGLint kRequiredMajorVersion = 1;
            constexpr EGLint kRequiredMinorVersion = 5;
            if ((kEglMajorVersion < kRequiredMajorVersion ||
                 kEglMinorVersion < kRequiredMinorVersion) &&
                !display->getExtensions().createContext)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }
            break;
        }

        case EGL_CONTEXT_OPENGL_NO_ERROR_KHR:
            if (!display->getExtensions().createContextNoError)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Invalid Context attribute.");
                return false;
            }
            break;

        case EGL_CONTEXT_WEBGL_COMPATIBILITY_ANGLE:
            if (!display->getExtensions().createContextWebGLCompatibility)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute "
                              "EGL_CONTEXT_WEBGL_COMPATIBILITY_ANGLE requires "
                              "EGL_ANGLE_create_context_webgl_compatibility.");
                return false;
            }
            break;

        case EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM:
            if (!display->getExtensions().createContextBindGeneratesResource)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM requires "
                              "EGL_CHROMIUM_create_context_bind_generates_resource.");
                return false;
            }
            break;

        case EGL_DISPLAY_TEXTURE_SHARE_GROUP_ANGLE:
            if (!display->getExtensions().displayTextureShareGroup)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute "
                              "EGL_DISPLAY_TEXTURE_SHARE_GROUP_ANGLE requires "
                              "EGL_ANGLE_display_texture_share_group.");
                return false;
            }
            break;

        case EGL_DISPLAY_SEMAPHORE_SHARE_GROUP_ANGLE:
            if (!display->getExtensions().displayTextureShareGroup)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute "
                              "EGL_DISPLAY_SEMAPHORE_SHARE_GROUP_ANGLE requires "
                              "EGL_ANGLE_display_semaphore_share_group.");
                return false;
            }
            break;

        case EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE:
            if (!display->getExtensions().createContextClientArrays)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE requires "
                              "EGL_ANGLE_create_context_client_arrays.");
                return false;
            }
            break;

        case EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE:
            if (!display->getExtensions().programCacheControlANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE "
                              "requires EGL_ANGLE_program_cache_control.");
                return false;
            }
            break;

        case EGL_ROBUST_RESOURCE_INITIALIZATION_ANGLE:
            if (!display->getExtensions().robustResourceInitializationANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_ROBUST_RESOURCE_INITIALIZATION_ANGLE "
                              "requires EGL_ANGLE_robust_resource_initialization.");
                return false;
            }
            break;

        case EGL_EXTENSIONS_ENABLED_ANGLE:
            if (!display->getExtensions().createContextExtensionsEnabled)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_EXTENSIONS_ENABLED_ANGLE "
                              "requires EGL_ANGLE_create_context_extensions_enabled.");
                return false;
            }
            break;

        case EGL_POWER_PREFERENCE_ANGLE:
            if (!display->getExtensions().powerPreference)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_POWER_PREFERENCE_ANGLE "
                              "requires EGL_ANGLE_power_preference.");
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE:
            if (!display->getExtensions().createContextBackwardsCompatible)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE "
                              "requires EGL_ANGLE_create_context_backwards_compatible.");
                return false;
            }
            break;

        case EGL_CONTEXT_PRIORITY_LEVEL_IMG:
            if (!display->getExtensions().contextPriority)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_PRIORITY_LEVEL_IMG requires "
                              "extension EGL_IMG_context_priority.");
                return false;
            }
            break;

        case EGL_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV:
            if (!display->getExtensions().robustnessVideoMemoryPurgeNV)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV requires "
                              "extension EGL_NV_robustness_video_memory_purge.");
                return false;
            }
            break;

        case EGL_EXTERNAL_CONTEXT_ANGLE:
            if (!display->getExtensions().externalContextAndSurface)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute "
                              "EGL_EXTERNAL_CONTEXT_ANGLE requires "
                              "EGL_ANGLE_external_context_and_surface.");
                return false;
            }
            break;
        case EGL_EXTERNAL_CONTEXT_SAVE_STATE_ANGLE:
            if (!display->getExtensions().externalContextAndSurface)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute "
                              "EGL_EXTERNAL_CONTEXT_SAVE_STATE_ANGLE requires "
                              "EGL_ANGLE_external_context_and_surface.");
                return false;
            }
            break;

        case EGL_PROTECTED_CONTENT_EXT:
            if (!display->getExtensions().protectedContentEXT)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_PROTECTED_CONTEXT_EXT requires "
                              "extension EGL_EXT_protected_content.");
                return false;
            }
            break;

        case EGL_CONTEXT_VIRTUALIZATION_GROUP_ANGLE:
            if (!display->getExtensions().contextVirtualizationANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_VIRTUALIZATION_GROUP_ANGLE requires "
                              "extension EGL_ANGLE_context_virtualization.");
                return false;
            }
            break;

        case EGL_CONTEXT_METAL_OWNERSHIP_IDENTITY_ANGLE:
            if (!display->getExtensions().metalCreateContextOwnershipIdentityANGLE)
            {
                val->setError(EGL_BAD_ATTRIBUTE,
                              "Attribute EGL_CONTEXT_METAL_OWNERSHIP_IDENTITY_ANGLE requires "
                              "EGL_ANGLE_metal_create_context_ownership_identity.");
            }
            break;

        default:
            val->setError(EGL_BAD_ATTRIBUTE, "Unknown attribute: 0x%04" PRIxPTR "X", attribute);
            return false;
    }

    return true;
}

bool ValidateCreateContextAttributeValue(const ValidationContext *val,
                                         const Display *display,
                                         const gl::Context *shareContext,
                                         EGLAttrib attribute,
                                         EGLAttrib value)
{
    switch (attribute)
    {
        case EGL_CONTEXT_CLIENT_VERSION:
        case EGL_CONTEXT_MINOR_VERSION:
        case EGL_CONTEXT_OPENGL_DEBUG:
        case EGL_CONTEXT_VIRTUALIZATION_GROUP_ANGLE:
            break;

        case EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR:
        {
            constexpr EGLint kValidProfileMaskFlags =
                (EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT |
                 EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT);
            if ((value & ~kValidProfileMaskFlags) != 0)
            {
                val->setError(EGL_BAD_ATTRIBUTE, "Invalid OpenGL profile mask.");
                return false;
            }
            break;
        }

        case EGL_CONTEXT_FLAGS_KHR:
        {
            // Note: EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR does not apply to ES
            constexpr EGLint kValidContextFlags =
                (EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR | EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR);
            if ((value & ~kValidContextFlags) != 0)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }
            break;
        }

        case EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT:
            if (value != EGL_TRUE && value != EGL_FALSE)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT:
        case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY:
            if (value != EGL_LOSE_CONTEXT_ON_RESET_EXT && value != EGL_NO_RESET_NOTIFICATION_EXT)
            {
                val->setError(EGL_BAD_ATTRIBUTE);
                return false;
            }

            if (shareContext && shareContext->isResetNotificationEnabled() !=
                                    (value == EGL_LOSE_CONTEXT_ON_RESET_EXT))
            {
                val->setError(EGL_BAD_MATCH);
                return false;
            }
            break;

        case EGL_CONTEXT_OPENGL_NO_ERROR_KHR:
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