Remove ANGLE

This marks the end of EGL and OpenGL ES support on Windows.

The concepts of -opengl dynamic, -opengl desktop, QT_OPENGL=software,
etc. remain unchanged, with the exception of the disapperance of
everything ANGLE related.

CMake builds now work identically to qmake on Windows: they default to
'dynamic' OpenGL on Windows, unless -DINPUT_opengl=desktop is specified.

On Windows, Qt 6 is expected to default to the "dynamic" OpenGL model by
default, just like Qt 5.15. This can be changed by switching to "desktop"
OpenGL, which will link to opengl32 (publicly, so other libs and applications
will do so as well) and disallows using another OpenGL DLL.

The "dynamic" mode is essential still because the fallback to a software
rasterizer, such as the opengl32sw.dll we ship with the Qt packages,
has to to work exactly like in Qt 5, the removal of ANGLE does not
change this concept in any way (except of course that the middle option
of using ANGLE is now gone)

When it comes to the windows plugin's OpenGL blacklist feature, it works
like before and accepts the ANGLE/D3D related keywords. They will
then be ignored. Similarly, requesting QT_OPENGL=angle is ignored (but
will show a warning).

The D3D11 and DXGI configure time tests are removed: Qt 5.14 already
depends on D3D 11.1 and DXGI 1.3 headers being available unconditionally
on Win32 (in QRhi's D3D11 backend). No need to test for these.

[ChangeLog][Windows] ANGLE is no longer included with Qt. Dynamic OpenGL
builds work like before but ANGLE is no longer an option. OpenGL proper
or an alternative opengl32 implementation are the two remaining options
now. Attempting to set QT_OPENGL=angle or Qt::AA_UseOpenGLES will have
no effect on Windows.

Fixes: QTBUG-79103
Change-Id: Ia404e0d07f3fe191b27434d863c81180112ecb3b
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 0 insertions, 319 deletions

diff --git a/src/3rdparty/angle/src/compiler/translator/ValidateSwitch.cpp b/src/3rdparty/angle/src/compiler/translator/ValidateSwitch.cpp
deleted file mode 100644
index 9f7a264e58..0000000000
--- a/src/3rdparty/angle/src/compiler/translator/ValidateSwitch.cpp
+++ /dev/null
@@ -1,319 +0,0 @@
-//
-// Copyright (c) 2002-2015 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.
-//
-
-#include "compiler/translator/ValidateSwitch.h"
-
-#include "compiler/translator/Diagnostics.h"
-#include "compiler/translator/IntermTraverse.h"
-
-namespace sh
-{
-
-namespace
-{
-
-class ValidateSwitch : public TIntermTraverser
-{
-  public:
-    static bool validate(TBasicType switchType,
-                         int shaderVersion,
-                         TDiagnostics *diagnostics,
-                         TIntermBlock *statementList,
-                         const TSourceLoc &loc);
-
-    void visitSymbol(TIntermSymbol *) override;
-    void visitConstantUnion(TIntermConstantUnion *) override;
-    bool visitDeclaration(Visit, TIntermDeclaration *) override;
-    bool visitBlock(Visit, TIntermBlock *) override;
-    bool visitBinary(Visit, TIntermBinary *) override;
-    bool visitUnary(Visit, TIntermUnary *) override;
-    bool visitTernary(Visit, TIntermTernary *) override;
-    bool visitSwizzle(Visit, TIntermSwizzle *) override;
-    bool visitIfElse(Visit visit, TIntermIfElse *) override;
-    bool visitSwitch(Visit, TIntermSwitch *) override;
-    bool visitCase(Visit, TIntermCase *node) override;
-    bool visitAggregate(Visit, TIntermAggregate *) override;
-    bool visitLoop(Visit visit, TIntermLoop *) override;
-    bool visitBranch(Visit, TIntermBranch *) override;
-
-  private:
-    ValidateSwitch(TBasicType switchType, int shaderVersion, TDiagnostics *context);
-
-    bool validateInternal(const TSourceLoc &loc);
-
-    TBasicType mSwitchType;
-    int mShaderVersion;
-    TDiagnostics *mDiagnostics;
-    bool mCaseTypeMismatch;
-    bool mFirstCaseFound;
-    bool mStatementBeforeCase;
-    bool mLastStatementWasCase;
-    int mControlFlowDepth;
-    bool mCaseInsideControlFlow;
-    int mDefaultCount;
-    std::set<int> mCasesSigned;
-    std::set<unsigned int> mCasesUnsigned;
-    bool mDuplicateCases;
-};
-
-bool ValidateSwitch::validate(TBasicType switchType,
-                              int shaderVersion,
-                              TDiagnostics *diagnostics,
-                              TIntermBlock *statementList,
-                              const TSourceLoc &loc)
-{
-    ValidateSwitch validate(switchType, shaderVersion, diagnostics);
-    ASSERT(statementList);
-    statementList->traverse(&validate);
-    return validate.validateInternal(loc);
-}
-
-ValidateSwitch::ValidateSwitch(TBasicType switchType, int shaderVersion, TDiagnostics *diagnostics)
-    : TIntermTraverser(true, false, true),
-      mSwitchType(switchType),
-      mShaderVersion(shaderVersion),
-      mDiagnostics(diagnostics),
-      mCaseTypeMismatch(false),
-      mFirstCaseFound(false),
-      mStatementBeforeCase(false),
-      mLastStatementWasCase(false),
-      mControlFlowDepth(0),
-      mCaseInsideControlFlow(false),
-      mDefaultCount(0),
-      mDuplicateCases(false)
-{
-}
-
-void ValidateSwitch::visitSymbol(TIntermSymbol *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-}
-
-void ValidateSwitch::visitConstantUnion(TIntermConstantUnion *)
-{
-    // Conditions of case labels are not traversed, so this is some other constant
-    // Could be just a statement like "0;"
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-}
-
-bool ValidateSwitch::visitDeclaration(Visit, TIntermDeclaration *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitBlock(Visit, TIntermBlock *)
-{
-    if (getParentNode() != nullptr)
-    {
-        if (!mFirstCaseFound)
-            mStatementBeforeCase = true;
-        mLastStatementWasCase    = false;
-    }
-    return true;
-}
-
-bool ValidateSwitch::visitBinary(Visit, TIntermBinary *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitUnary(Visit, TIntermUnary *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitTernary(Visit, TIntermTernary *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitSwizzle(Visit, TIntermSwizzle *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitIfElse(Visit visit, TIntermIfElse *)
-{
-    if (visit == PreVisit)
-        ++mControlFlowDepth;
-    if (visit == PostVisit)
-        --mControlFlowDepth;
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitSwitch(Visit, TIntermSwitch *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    // Don't go into nested switch statements
-    return false;
-}
-
-bool ValidateSwitch::visitCase(Visit, TIntermCase *node)
-{
-    const char *nodeStr = node->hasCondition() ? "case" : "default";
-    if (mControlFlowDepth > 0)
-    {
-        mDiagnostics->error(node->getLine(), "label statement nested inside control flow", nodeStr);
-        mCaseInsideControlFlow = true;
-    }
-    mFirstCaseFound       = true;
-    mLastStatementWasCase = true;
-    if (!node->hasCondition())
-    {
-        ++mDefaultCount;
-        if (mDefaultCount > 1)
-        {
-            mDiagnostics->error(node->getLine(), "duplicate default label", nodeStr);
-        }
-    }
-    else
-    {
-        TIntermConstantUnion *condition = node->getCondition()->getAsConstantUnion();
-        if (condition == nullptr)
-        {
-            // This can happen in error cases.
-            return false;
-        }
-        TBasicType conditionType = condition->getBasicType();
-        if (conditionType != mSwitchType)
-        {
-            mDiagnostics->error(condition->getLine(),
-                                "case label type does not match switch init-expression type",
-                                nodeStr);
-            mCaseTypeMismatch = true;
-        }
-
-        if (conditionType == EbtInt)
-        {
-            int iConst = condition->getIConst(0);
-            if (mCasesSigned.find(iConst) != mCasesSigned.end())
-            {
-                mDiagnostics->error(condition->getLine(), "duplicate case label", nodeStr);
-                mDuplicateCases = true;
-            }
-            else
-            {
-                mCasesSigned.insert(iConst);
-            }
-        }
-        else if (conditionType == EbtUInt)
-        {
-            unsigned int uConst = condition->getUConst(0);
-            if (mCasesUnsigned.find(uConst) != mCasesUnsigned.end())
-            {
-                mDiagnostics->error(condition->getLine(), "duplicate case label", nodeStr);
-                mDuplicateCases = true;
-            }
-            else
-            {
-                mCasesUnsigned.insert(uConst);
-            }
-        }
-        // Other types are possible only in error cases, where the error has already been generated
-        // when parsing the case statement.
-    }
-    // Don't traverse the condition of the case statement
-    return false;
-}
-
-bool ValidateSwitch::visitAggregate(Visit visit, TIntermAggregate *)
-{
-    if (getParentNode() != nullptr)
-    {
-        // This is not the statementList node, but some other node.
-        if (!mFirstCaseFound)
-            mStatementBeforeCase = true;
-        mLastStatementWasCase    = false;
-    }
-    return true;
-}
-
-bool ValidateSwitch::visitLoop(Visit visit, TIntermLoop *)
-{
-    if (visit == PreVisit)
-        ++mControlFlowDepth;
-    if (visit == PostVisit)
-        --mControlFlowDepth;
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::visitBranch(Visit, TIntermBranch *)
-{
-    if (!mFirstCaseFound)
-        mStatementBeforeCase = true;
-    mLastStatementWasCase    = false;
-    return true;
-}
-
-bool ValidateSwitch::validateInternal(const TSourceLoc &loc)
-{
-    if (mStatementBeforeCase)
-    {
-        mDiagnostics->error(loc, "statement before the first label", "switch");
-    }
-    bool lastStatementWasCaseError = false;
-    if (mLastStatementWasCase)
-    {
-        if (mShaderVersion == 300)
-        {
-            lastStatementWasCaseError = true;
-            // This error has been proposed to be made optional in GLSL ES 3.00, but dEQP tests
-            // still require it.
-            mDiagnostics->error(
-                loc, "no statement between the last label and the end of the switch statement",
-                "switch");
-        }
-        else
-        {
-            // The error has been removed from GLSL ES 3.10.
-            mDiagnostics->warning(
-                loc, "no statement between the last label and the end of the switch statement",
-                "switch");
-        }
-    }
-    return !mStatementBeforeCase && !lastStatementWasCaseError && !mCaseInsideControlFlow &&
-           !mCaseTypeMismatch && mDefaultCount <= 1 && !mDuplicateCases;
-}
-
-}  // anonymous namespace
-
-bool ValidateSwitchStatementList(TBasicType switchType,
-                                 int shaderVersion,
-                                 TDiagnostics *diagnostics,
-                                 TIntermBlock *statementList,
-                                 const TSourceLoc &loc)
-{
-    return ValidateSwitch::validate(switchType, shaderVersion, diagnostics, statementList, loc);
-}
-
-}  // namespace sh