Implement eglQueryContext

BUG=angle:895

Change-Id: I5e709f772d6222cdb7b5d7c060830a75eac9f815
Reviewed-on: https://chromium-review.googlesource.com/246490
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>

AUTHORS

@@ -29,6 +29,7 @@ Jacek Caban
 Mark Callow
 Ginn Chen
 Tibor den Ouden
+Régis Fénéon
 James Hauxwell
 Sam Hocevar
 Pierre Leveille

CONTRIBUTORS

@@ -84,6 +84,7 @@ Mark Banner (standard8mbp)
 David Kilzer
 Jacek Caban
 Tibor den Ouden
+Régis Fénéon
 
 Microsoft Corporation
 Cooper Partin

src/libANGLE/Context.cpp

@@ -13,6 +13,7 @@
 #include "common/platform.h"
 #include "libANGLE/Compiler.h"
 #include "libANGLE/Buffer.h"
+#include "libANGLE/Config.h"
 #include "libANGLE/Display.h"
 #include "libANGLE/Fence.h"
 #include "libANGLE/Framebuffer.h"
@@ -36,7 +37,7 @@
 namespace gl
 {
 
-Context::Context(int clientVersion, const Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess)
+Context::Context(const egl::Config *config, int clientVersion, const Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess)
     : mRenderer(renderer)
 {
     ASSERT(robustAccess == false);   // Unimplemented
@@ -46,6 +47,10 @@ Context::Context(int clientVersion, const Context *shareContext, rx::Renderer *r
 
     mClientVersion = clientVersion;
 
+    mConfigID = config->configID;
+    mClientType = EGL_OPENGL_ES_API;
+    mRenderBuffer = EGL_NONE;
+
     mFenceNVHandleAllocator.setBaseHandle(0);
 
     if (shareContext != NULL)
@@ -186,6 +191,8 @@ void Context::makeCurrent(egl::Surface *surface)
                                                           mRenderer->createDefaultAttachment(GL_STENCIL, surface));
 
     setFramebufferZero(framebufferZero);
+
+    mRenderBuffer = surface->getRenderBuffer();
 }
 
 // NOTE: this function should not assume that this context is current!
@@ -1274,6 +1281,21 @@ int Context::getClientVersion() const
     return mClientVersion;
 }
 
+EGLint Context::getConfigID() const
+{
+    return mConfigID;
+}
+
+EGLenum Context::getClientType() const
+{
+    return mClientType;
+}
+
+EGLenum Context::getRenderBuffer() const
+{
+    return mRenderBuffer;
+}
+
 const Caps &Context::getCaps() const
 {
     return mCaps;

src/libANGLE/Context.h

@@ -34,6 +34,7 @@ class Renderer;
 namespace egl
 {
 class Surface;
+struct Config;
 }
 
 namespace gl
@@ -57,7 +58,7 @@ class TransformFeedback;
 class Context
 {
   public:
-    Context(int clientVersion, const Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess);
+    Context(const egl::Config *config, int clientVersion, const Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess);
 
     virtual ~Context();
 
@@ -179,6 +180,10 @@ class Context
 
     virtual int getClientVersion() const;
 
+    EGLint getConfigID() const;
+    EGLenum getClientType() const;
+    EGLenum getRenderBuffer() const;
+
     const Caps &getCaps() const;
     const TextureCapsMap &getTextureCaps() const;
     const Extensions &getExtensions() const;
@@ -225,6 +230,10 @@ class Context
 
     int mClientVersion;
 
+    EGLint mConfigID;
+    EGLenum mClientType;
+    EGLenum mRenderBuffer;
+
     TextureMap mZeroTextures;
 
     typedef std::map<GLuint, Framebuffer*> FramebufferMap;

src/libANGLE/renderer/d3d/DisplayD3D.cpp

@@ -147,7 +147,7 @@ egl::Error DisplayD3D::createContext(const egl::Config *config, const gl::Contex
     bool notifyResets = (attribs.get(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT, EGL_NO_RESET_NOTIFICATION_EXT) == EGL_LOSE_CONTEXT_ON_RESET_EXT);
     bool robustAccess = (attribs.get(EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT, EGL_FALSE) == EGL_TRUE);
 
-    *outContext = new gl::Context(clientVersion, shareContext, mRenderer, notifyResets, robustAccess);
+    *outContext = new gl::Context(config, clientVersion, shareContext, mRenderer, notifyResets, robustAccess);
     return egl::Error(EGL_SUCCESS);
 }
 

src/libGLESv2/entry_points_egl.cpp

@@ -624,10 +624,27 @@ EGLBoolean EGLAPIENTRY QueryContext(EGLDisplay dpy, EGLContext ctx, EGLint attri
         return EGL_FALSE;
     }
 
-    UNIMPLEMENTED();   // FIXME
+    switch (attribute)
+    {
+      case EGL_CONFIG_ID:
+        *value = context->getConfigID();
+        break;
+      case EGL_CONTEXT_CLIENT_TYPE:
+        *value = context->getClientType();
+        break;
+      case EGL_CONTEXT_CLIENT_VERSION:
+        *value = context->getClientVersion();
+        break;
+      case EGL_RENDER_BUFFER:
+        *value = context->getRenderBuffer();
+        break;
+      default:
+        SetGlobalError(Error(EGL_BAD_ATTRIBUTE));
+        return EGL_FALSE;
+    }
 
     SetGlobalError(Error(EGL_SUCCESS));
-    return 0;
+    return EGL_TRUE;
 }
 
 EGLBoolean EGLAPIENTRY WaitGL(void)

tests/angle_end2end_tests.gypi

@@ -50,6 +50,7 @@
             '<(angle_path)/tests/angle_tests/VertexAttributeTest.cpp',
             '<(angle_path)/tests/angle_tests/ViewportTest.cpp',
             '<(angle_path)/tests/standalone_tests/EGLThreadTest.cpp',
+            '<(angle_path)/tests/standalone_tests/EGLQueryContextTest.cpp',
         ],
     },
     'dependencies':

tests/standalone_tests/EGLQueryContextTest.cpp

@@ -0,0 +1,151 @@
+//
+// Copyright (c) 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 <EGL/egl.h>
+#include <EGL/eglext.h>
+#include "gtest/gtest.h"
+
+template <int clientVersion>
+class EGLQueryContextTest : public testing::Test
+{
+  public:
+    virtual void SetUp()
+    {
+        PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT = reinterpret_cast<PFNEGLGETPLATFORMDISPLAYEXTPROC>(eglGetProcAddress("eglGetPlatformDisplayEXT"));
+        EXPECT_TRUE(eglGetPlatformDisplayEXT != NULL);
+
+        EGLint dispattrs[] =
+        {
+            EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
+            EGL_NONE
+        };
+        mDisplay = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, dispattrs);
+        EXPECT_TRUE(mDisplay != EGL_NO_DISPLAY);
+        EXPECT_TRUE(eglInitialize(mDisplay, NULL, NULL) != EGL_FALSE);
+
+        EGLint ncfg;
+        EGLint cfgattrs[] =
+        {
+            EGL_RED_SIZE, 8,
+            EGL_GREEN_SIZE, 8,
+            EGL_BLUE_SIZE, 8,
+            EGL_RENDERABLE_TYPE, clientVersion == 3 ? EGL_OPENGL_ES3_BIT : EGL_OPENGL_ES2_BIT,
+            EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
+            EGL_NONE
+        };
+        EXPECT_TRUE(eglChooseConfig(mDisplay, cfgattrs, &mConfig, 1, &ncfg) != EGL_FALSE);
+        EXPECT_TRUE(ncfg == 1);
+
+        EGLint ctxattrs[] =
+        {
+            EGL_CONTEXT_CLIENT_VERSION, clientVersion,
+            EGL_NONE
+        };
+        mContext = eglCreateContext(mDisplay, mConfig, NULL, ctxattrs);
+        EXPECT_TRUE(mContext != EGL_NO_CONTEXT);
+
+        EGLint surfattrs[] =
+        {
+            EGL_WIDTH, 16,
+            EGL_HEIGHT, 16,
+            EGL_NONE
+        };
+        mSurface = eglCreatePbufferSurface(mDisplay, mConfig, surfattrs);
+        EXPECT_TRUE(mSurface != EGL_NO_SURFACE);
+    }
+
+    virtual void TearDown()
+    {
+        eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        eglDestroyContext(mDisplay, mContext);
+        eglDestroySurface(mDisplay, mSurface);
+        eglTerminate(mDisplay);
+    }
+
+    EGLDisplay mDisplay;
+    EGLConfig mConfig;
+    EGLContext mContext;
+    EGLSurface mSurface;
+};
+
+typedef EGLQueryContextTest<2> EGLQueryContextTestES2;
+
+typedef EGLQueryContextTest<3> EGLQueryContextTestES3;
+
+
+TEST_F(EGLQueryContextTestES2, GetConfigID)
+{
+    EGLint configId, contextConfigId;
+    EXPECT_TRUE(eglGetConfigAttrib(mDisplay, mConfig, EGL_CONFIG_ID, &configId) != EGL_FALSE);
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_CONFIG_ID, &contextConfigId) != EGL_FALSE);
+    EXPECT_TRUE(configId == contextConfigId);
+}
+
+TEST_F(EGLQueryContextTestES2, GetClientType)
+{
+    EGLint clientType;
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_CONTEXT_CLIENT_TYPE, &clientType) != EGL_FALSE);
+    EXPECT_TRUE(clientType == EGL_OPENGL_ES_API);
+}
+
+TEST_F(EGLQueryContextTestES2, GetClientVersion)
+{
+    EGLint clientVersion;
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_CONTEXT_CLIENT_VERSION, &clientVersion) != EGL_FALSE);
+    EXPECT_TRUE(clientVersion == 2);
+}
+
+TEST_F(EGLQueryContextTestES2, GetRenderBufferNoSurface)
+{
+    EGLint renderBuffer;
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_RENDER_BUFFER, &renderBuffer) != EGL_FALSE);
+    EXPECT_TRUE(renderBuffer == EGL_NONE);
+}
+
+TEST_F(EGLQueryContextTestES2, GetRenderBufferBoundSurface)
+{
+    EGLint renderBuffer, contextRenderBuffer;
+    EXPECT_TRUE(eglQuerySurface(mDisplay, mSurface, EGL_RENDER_BUFFER, &renderBuffer) != EGL_FALSE);
+    EXPECT_TRUE(eglMakeCurrent(mDisplay, mSurface, mSurface, mContext) != EGL_FALSE);
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_RENDER_BUFFER, &contextRenderBuffer) != EGL_FALSE);
+    EXPECT_TRUE(renderBuffer == contextRenderBuffer);
+}
+
+TEST_F(EGLQueryContextTestES2, BadDisplay)
+{
+    EGLint val;
+    EXPECT_TRUE(eglQueryContext(EGL_NO_DISPLAY, mContext, EGL_CONTEXT_CLIENT_TYPE, &val) == EGL_FALSE);
+    EXPECT_TRUE(eglGetError() == EGL_BAD_DISPLAY);
+}
+
+TEST_F(EGLQueryContextTestES2, NotInitialized)
+{
+    EGLint val;
+    eglTerminate(mDisplay);
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_CONTEXT_CLIENT_TYPE, &val) == EGL_FALSE);
+    EXPECT_TRUE(eglGetError() == EGL_NOT_INITIALIZED);
+}
+
+TEST_F(EGLQueryContextTestES2, BadContext)
+{
+    EGLint val;
+    EXPECT_TRUE(eglQueryContext(mDisplay, EGL_NO_CONTEXT, EGL_CONTEXT_CLIENT_TYPE, &val) == EGL_FALSE);
+    EXPECT_TRUE(eglGetError() == EGL_BAD_CONTEXT);
+}
+
+TEST_F(EGLQueryContextTestES2, BadAttribute)
+{
+    EGLint val;
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_HEIGHT, &val) == EGL_FALSE);
+    EXPECT_TRUE(eglGetError() == EGL_BAD_ATTRIBUTE);
+}
+
+TEST_F(EGLQueryContextTestES3, GetClientVersion)
+{
+    EGLint clientVersion;
+    EXPECT_TRUE(eglQueryContext(mDisplay, mContext, EGL_CONTEXT_CLIENT_VERSION, &clientVersion) != EGL_FALSE);
+    EXPECT_TRUE(clientVersion == 3);
+}