Initial Chrome OS support.

Samples and end2end tests mostly work.  Only one config, and no input.

BUG=angleproject:1297

Change-Id: I5b69babccc5b97e486d86e1721a0a1740ad80941
Reviewed-on: https://chromium-review.googlesource.com/319460
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>

src/libANGLE/Display.cpp

@@ -44,6 +44,8 @@
 #       include "libANGLE/renderer/gl/glx/DisplayGLX.h"
 #   elif defined(ANGLE_PLATFORM_APPLE)
 #       include "libANGLE/renderer/gl/cgl/DisplayCGL.h"
+#   elif defined(ANGLE_USE_OZONE)
+#       include "libANGLE/renderer/gl/egl/ozone/DisplayOzone.h"
 #   else
 #       error Unsupported OpenGL platform.
 #   endif
@@ -146,6 +148,8 @@ rx::DisplayImpl *CreateDisplayFromAttribs(const AttributeMap &attribMap)
         impl = new rx::DisplayGLX();
 #elif defined(ANGLE_PLATFORM_APPLE)
         impl = new rx::DisplayCGL();
+#elif defined(ANGLE_USE_OZONE)
+        impl = new rx::DisplayOzone();
 #else
         // No display available
         UNREACHABLE();
@@ -170,6 +174,9 @@ rx::DisplayImpl *CreateDisplayFromAttribs(const AttributeMap &attribMap)
         impl = new rx::DisplayGLX();
 #elif defined(ANGLE_PLATFORM_APPLE)
         impl = new rx::DisplayCGL();
+#elif defined(ANGLE_USE_OZONE)
+        // This might work but has never been tried, so disallow for now.
+        impl = nullptr;
 #else
 #error Unsupported OpenGL platform.
 #endif
@@ -184,6 +191,8 @@ rx::DisplayImpl *CreateDisplayFromAttribs(const AttributeMap &attribMap)
           impl = new rx::DisplayWGL();
 #elif defined(ANGLE_USE_X11)
           impl = new rx::DisplayGLX();
+#elif defined(ANGLE_USE_OZONE)
+          impl = new rx::DisplayOzone();
 #else
           // No GLES support on this platform, fail display creation.
           impl = nullptr;

src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.h

@@ -0,0 +1,218 @@
+//
+// Copyright (c) 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.
+//
+
+// DisplayOzone.h: Ozone implementation of egl::Display
+
+#ifndef LIBANGLE_RENDERER_GL_EGL_OZONE_DISPLAYOZONE_H_
+#define LIBANGLE_RENDERER_GL_EGL_OZONE_DISPLAYOZONE_H_
+
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <string>
+
+#include "libANGLE/renderer/gl/DisplayGL.h"
+#include "libANGLE/renderer/gl/egl/FunctionsEGLDL.h"
+
+struct gbm_device;
+struct gbm_bo;
+
+namespace rx
+{
+
+class FramebufferGL;
+
+// TODO(fjhenigman) Implement swap control.  The following struct will be used for that.
+// State-tracking data for the swap control to allow DisplayOzone to remember per
+// drawable information for swap control.
+struct SwapControlData final
+{
+    SwapControlData();
+
+    // Set by the drawable
+    int targetSwapInterval;
+
+    // DisplayOzone-side state-tracking
+    int maxSwapInterval;
+    int currentSwapInterval;
+};
+
+class DisplayOzone final : public DisplayGL
+{
+  public:
+    struct NativeWindow
+    {
+        int32_t x;
+        int32_t y;
+        int32_t width;
+        int32_t height;
+        int32_t borderWidth;
+        int32_t borderHeight;
+        int32_t visible;
+        int32_t depth;
+    };
+
+    class Buffer final : angle::NonCopyable
+    {
+      public:
+        Buffer(DisplayOzone *display,
+               uint32_t useFlags,
+               uint32_t gbmFormat,
+               uint32_t drmFormat,
+               uint32_t drmFormatFB,
+               int depthBits,
+               int stencilBits);
+
+        ~Buffer();
+        bool initialize(const NativeWindow *window);
+        bool initialize(int32_t width, int32_t height);
+        void reset();
+        bool resize(int32_t width, int32_t height);
+        FramebufferGL *framebufferGL(const gl::FramebufferState &state);
+        void present();
+        uint32_t getDRMFB();
+        void bindTexImage();
+        GLuint getTexture();
+        int32_t getWidth() const { return mWidth; }
+        int32_t getHeight() const { return mHeight; }
+        GLuint getGLFB() const { return mGLFB; }
+        const NativeWindow *getNative() const { return mNative; }
+
+      private:
+        DisplayOzone *mDisplay;
+        const NativeWindow *mNative;
+        int mWidth;
+        int mHeight;
+        const int mDepthBits;
+        const int mStencilBits;
+        const uint32_t mUseFlags;
+        const uint32_t mGBMFormat;
+        const uint32_t mDRMFormat;
+        const uint32_t mDRMFormatFB;
+        gbm_bo *mBO;
+        int mDMABuf;
+        bool mHasDRMFB;
+        uint32_t mDRMFB;
+        EGLImageKHR mImage;
+        GLuint mColorBuffer;
+        GLuint mDSBuffer;
+        GLuint mGLFB;
+        GLuint mTexture;
+    };
+
+    DisplayOzone();
+    ~DisplayOzone() override;
+
+    egl::Error initialize(egl::Display *display) override;
+    void terminate() override;
+
+    SurfaceImpl *createWindowSurface(const egl::Config *configuration,
+                                     EGLNativeWindowType window,
+                                     const egl::AttributeMap &attribs) override;
+    SurfaceImpl *createPbufferSurface(const egl::Config *configuration,
+                                      const egl::AttributeMap &attribs) override;
+    SurfaceImpl *createPbufferFromClientBuffer(const egl::Config *configuration,
+                                               EGLClientBuffer shareHandle,
+                                               const egl::AttributeMap &attribs) override;
+    SurfaceImpl *createPixmapSurface(const egl::Config *configuration,
+                                     NativePixmapType nativePixmap,
+                                     const egl::AttributeMap &attribs) override;
+
+    egl::ConfigSet generateConfigs() const override;
+
+    bool isDeviceLost() const override;
+    bool testDeviceLost() override;
+    egl::Error restoreLostDevice() override;
+
+    bool isValidNativeWindow(EGLNativeWindowType window) const override;
+
+    egl::Error getDevice(DeviceImpl **device) override;
+
+    std::string getVendorString() const override;
+
+    egl::Error waitClient() const override;
+    egl::Error waitNative(EGLint engine,
+                          egl::Surface *drawSurface,
+                          egl::Surface *readSurface) const override;
+
+    // TODO(fjhenigman) Implement this.
+    // Swap interval can be set globally or per drawable.
+    // This function will make sure the drawable's swap interval is the
+    // one required so that the subsequent swapBuffers acts as expected.
+    void setSwapInterval(EGLSurface drawable, SwapControlData *data);
+
+    egl::Error getDriverVersion(std::string *version) const override;
+
+  private:
+    const FunctionsGL *getFunctionsGL() const override;
+
+    EGLContext initializeContext(EGLConfig config, const egl::AttributeMap &eglAttributes);
+
+    void generateExtensions(egl::DisplayExtensions *outExtensions) const override;
+    void generateCaps(egl::Caps *outCaps) const override;
+
+    GLuint makeShader(GLuint type, const char *src);
+    void drawBuffer(Buffer *buffer);
+    void drawWithBlit(Buffer *buffer);
+    void drawWithTexture(Buffer *buffer);
+    void flushGL();
+    void presentScreen();
+    static void pageFlipHandler(int fd,
+                                unsigned int sequence,
+                                unsigned int tv_sec,
+                                unsigned int tv_usec,
+                                void *data);
+    void pageFlipHandler(unsigned int sequence, uint64_t tv);
+
+    EGLConfig mContextConfig;
+    EGLContext mContext;
+
+    // TODO(fjhenigman) Implement swap control.  The following stuff will be used for that.
+    enum class SwapControl
+    {
+        ABSENT,
+        EXT,
+        MESA,
+        SGI,
+    };
+    SwapControl mSwapControl;
+    int mMinSwapInterval;
+    int mMaxSwapInterval;
+    int mCurrentSwapInterval;
+
+    FunctionsEGLDL *mEGL;
+    FunctionsGL *mFunctionsGL;
+
+    gbm_device *mGBM;
+    drmModeConnectorPtr mConnector;
+    drmModeModeInfoPtr mMode;
+    drmModeCrtcPtr mCRTC;
+    bool mSetCRTC;
+
+    int32_t mWidth;
+    int32_t mHeight;
+
+    // Three scanout buffers cycle through four states.  The state of a buffer
+    // is indicated by which of these pointers points to it.
+    // TODO(fjhenigman) It might be simpler/clearer to use a ring buffer.
+    Buffer *mScanning;
+    Buffer *mPending;
+    Buffer *mDrawing;
+    Buffer *mUnused;
+
+    GLuint mProgram;
+    GLuint mVertexShader;
+    GLuint mFragmentShader;
+    GLuint mVertexBuffer;
+    GLuint mIndexBuffer;
+    GLint mCenterUniform;
+    GLint mWindowSizeUniform;
+    GLint mBorderSizeUniform;
+    GLint mDepthUniform;
+};
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_GL_EGL_OZONE_DISPLAYOZONE_H_

src/libANGLE/renderer/gl/egl/ozone/SurfaceOzone.cpp

@@ -0,0 +1,96 @@
+//
+// Copyright (c) 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.
+//
+
+// SurfaceOzone.cpp: Ozone implementation of egl::SurfaceGL
+
+#include "libANGLE/renderer/gl/egl/ozone/SurfaceOzone.h"
+
+#include "libANGLE/renderer/gl/FramebufferGL.h"
+#include "libANGLE/renderer/gl/egl/ozone/DisplayOzone.h"
+
+namespace rx
+{
+
+SurfaceOzone::SurfaceOzone(RendererGL *renderer, DisplayOzone::Buffer *buffer)
+    : SurfaceGL(renderer), mBuffer(buffer)
+{
+}
+
+SurfaceOzone::~SurfaceOzone()
+{
+    delete mBuffer;
+}
+
+egl::Error SurfaceOzone::initialize()
+{
+    return egl::Error(EGL_SUCCESS);
+}
+
+FramebufferImpl *SurfaceOzone::createDefaultFramebuffer(const gl::FramebufferState &state)
+{
+    return mBuffer->framebufferGL(state);
+}
+
+egl::Error SurfaceOzone::makeCurrent()
+{
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error SurfaceOzone::swap()
+{
+    mBuffer->present();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error SurfaceOzone::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error SurfaceOzone::querySurfacePointerANGLE(EGLint attribute, void **value)
+{
+    UNIMPLEMENTED();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error SurfaceOzone::bindTexImage(gl::Texture *texture, EGLint buffer)
+{
+    mBuffer->bindTexImage();
+    return egl::Error(EGL_SUCCESS);
+}
+
+egl::Error SurfaceOzone::releaseTexImage(EGLint buffer)
+{
+    return egl::Error(EGL_SUCCESS);
+}
+
+void SurfaceOzone::setSwapInterval(EGLint interval)
+{
+    mSwapControl.targetSwapInterval = interval;
+}
+
+EGLint SurfaceOzone::getWidth() const
+{
+    return mBuffer->getWidth();
+}
+
+EGLint SurfaceOzone::getHeight() const
+{
+    return mBuffer->getHeight();
+}
+
+EGLint SurfaceOzone::isPostSubBufferSupported() const
+{
+    UNIMPLEMENTED();
+    return EGL_FALSE;
+}
+
+EGLint SurfaceOzone::getSwapBehavior() const
+{
+    return EGL_BUFFER_PRESERVED;
+}
+}  // namespace rx

src/libANGLE/renderer/gl/egl/ozone/SurfaceOzone.h

@@ -0,0 +1,50 @@
+//
+// Copyright (c) 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.
+//
+
+// SurfaceOzone.h: Ozone implementation of egl::SurfaceGL
+
+#ifndef LIBANGLE_RENDERER_GL_EGL_OZONE_SURFACEOZONE_H_
+#define LIBANGLE_RENDERER_GL_EGL_OZONE_SURFACEOZONE_H_
+
+#include "libANGLE/renderer/gl/SurfaceGL.h"
+#include "libANGLE/renderer/gl/egl/ozone/DisplayOzone.h"
+
+namespace rx
+{
+
+class SurfaceOzone : public SurfaceGL
+{
+  public:
+    SurfaceOzone(RendererGL *renderer, DisplayOzone::Buffer *buffer);
+    ~SurfaceOzone() override;
+
+    FramebufferImpl *createDefaultFramebuffer(const gl::FramebufferState &state) override;
+
+    egl::Error initialize() override;
+    egl::Error makeCurrent() override;
+
+    egl::Error swap() override;
+    egl::Error postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height) override;
+    egl::Error querySurfacePointerANGLE(EGLint attribute, void **value) override;
+    egl::Error bindTexImage(gl::Texture *texture, EGLint buffer) override;
+    egl::Error releaseTexImage(EGLint buffer) override;
+    void setSwapInterval(EGLint interval) override;
+
+    EGLint getWidth() const override;
+    EGLint getHeight() const override;
+
+    EGLint isPostSubBufferSupported() const override;
+    EGLint getSwapBehavior() const override;
+
+  private:
+    DisplayOzone::Buffer *mBuffer;
+
+    // TODO(fjhenigman) Implement swap control.  This will be used for that.
+    SwapControlData mSwapControl;
+};
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_GL_EGL_OZONE_SURFACEOZONE_H_

src/libGLESv2.gypi

@@ -514,6 +514,13 @@
             'libANGLE/renderer/gl/egl/FunctionsEGLDL.cpp',
             'libANGLE/renderer/gl/egl/FunctionsEGLDL.h',
         ],
+        'libangle_gl_ozone_sources':
+        [
+            'libANGLE/renderer/gl/egl/ozone/DisplayOzone.cpp',
+            'libANGLE/renderer/gl/egl/ozone/DisplayOzone.h',
+            'libANGLE/renderer/gl/egl/ozone/SurfaceOzone.cpp',
+            'libANGLE/renderer/gl/egl/ozone/SurfaceOzone.h',
+        ],
         'libangle_gl_cgl_sources':
         [
             'libANGLE/renderer/gl/cgl/DisplayCGL.mm',
@@ -778,6 +785,31 @@
                                 ],
                             },
                         }],
+                        ['use_ozone==1',
+                        {
+                            'defines':
+                            [
+                                'ANGLE_USE_OZONE',
+                            ],
+                            'sources':
+                            [
+                                '<@(libangle_gl_egl_sources)',
+                                '<@(libangle_gl_egl_dl_sources)',
+                                '<@(libangle_gl_ozone_sources)',
+                            ],
+                            'cflags':
+                            [
+                                '<!@(<(pkg-config) --cflags libdrm gbm)',
+                            ],
+                            'link_settings': {
+                                'ldflags': [
+                                    '<!@(<(pkg-config) --libs-only-L --libs-only-other libdrm gbm)',
+                                ],
+                                'libraries': [
+                                    '<!@(<(pkg-config) --libs-only-l libdrm gbm) -ldl',
+                                ],
+                            },
+                        }],
                         ['angle_link_glx==1',
                         {
                             'link_settings':

util/ozone/OzonePixmap.cpp

@@ -0,0 +1,12 @@
+//
+// Copyright (c) 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.
+//
+
+#include "OSPixmap.h"
+
+OSPixmap *CreateOSPixmap()
+{
+    return nullptr;
+}

util/ozone/OzoneWindow.cpp

@@ -0,0 +1,82 @@
+//
+// Copyright (c) 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.
+//
+
+// OzoneWindow.cpp: Implementation of OSWindow for Ozone
+
+#include "ozone/OzoneWindow.h"
+
+int OzoneWindow::sLastDepth = 0;
+
+OzoneWindow::OzoneWindow()
+{
+}
+
+OzoneWindow::~OzoneWindow()
+{
+}
+
+bool OzoneWindow::initialize(const std::string &name, size_t width, size_t height)
+{
+    mNative.x = mX = 0;
+    mNative.y = mY = 0;
+    mNative.width = mWidth = width;
+    mNative.height = mHeight = height;
+    mNative.borderWidth  = 5;
+    mNative.borderHeight = 5;
+    mNative.visible      = 0;
+    mNative.depth        = sLastDepth++;
+    return true;
+}
+
+void OzoneWindow::destroy()
+{
+}
+
+EGLNativeWindowType OzoneWindow::getNativeWindow() const
+{
+    return reinterpret_cast<EGLNativeWindowType>(&mNative);
+}
+
+EGLNativeDisplayType OzoneWindow::getNativeDisplay() const
+{
+    return EGL_DEFAULT_DISPLAY;
+}
+
+void OzoneWindow::messageLoop()
+{
+}
+
+void OzoneWindow::setMousePosition(int x, int y)
+{
+}
+
+bool OzoneWindow::setPosition(int x, int y)
+{
+    mNative.x = mX = x;
+    mNative.y = mY = y;
+    return true;
+}
+
+bool OzoneWindow::resize(int width, int height)
+{
+    mNative.width = mWidth = width;
+    mNative.height = mHeight = height;
+    return true;
+}
+
+void OzoneWindow::setVisible(bool isVisible)
+{
+    mNative.visible = isVisible;
+}
+
+void OzoneWindow::signalTestEvent()
+{
+}
+
+OSWindow *CreateOSWindow()
+{
+    return new OzoneWindow();
+}

util/ozone/OzoneWindow.h

@@ -0,0 +1,54 @@
+//
+// Copyright (c) 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.
+//
+
+// OzoneWindow.h: Definition of the implementation of OSWindow for Ozone
+
+#ifndef UTIL_OZONE_WINDOW_H
+#define UTIL_OZONE_WINDOW_H
+
+#include <string>
+
+#include "OSWindow.h"
+
+class OzoneWindow : public OSWindow
+{
+  public:
+    OzoneWindow();
+    ~OzoneWindow();
+
+    bool initialize(const std::string &name, size_t width, size_t height) override;
+    void destroy() override;
+
+    EGLNativeWindowType getNativeWindow() const override;
+    EGLNativeDisplayType getNativeDisplay() const override;
+
+    void messageLoop() override;
+
+    void setMousePosition(int x, int y) override;
+    bool setPosition(int x, int y) override;
+    bool resize(int width, int height) override;
+    void setVisible(bool isVisible) override;
+
+    void signalTestEvent() override;
+
+  private:
+    struct Native
+    {
+        int32_t x;
+        int32_t y;
+        int32_t width;
+        int32_t height;
+        int32_t borderWidth;
+        int32_t borderHeight;
+        int32_t visible;
+        int32_t depth;
+    };
+
+    Native mNative;
+    static int sLastDepth;
+};
+
+#endif  // UTIL_OZONE_WINDOW_H

util/util.gyp

@@ -66,6 +66,12 @@
             'x11/X11Window.cpp',
             'x11/X11Window.h',
         ],
+        'util_ozone_sources':
+        [
+            'ozone/OzonePixmap.cpp',
+            'ozone/OzoneWindow.cpp',
+            'ozone/OzoneWindow.h',
+        ],
         'util_osx_sources':
         [
             'osx/OSX_system_utils.cpp',
@@ -162,6 +168,13 @@
                         ],
                     },
                 }],
+                ['use_ozone==1',
+                {
+                    'sources':
+                    [
+                        '<@(util_ozone_sources)',
+                    ],
+                }],
                 ['OS=="mac"',
                 {
                     'sources':