| // Copyright (c) 2012 The Chromium 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 "ui/gl/gl_surface.h" |
| |
| #include <dwmapi.h> |
| |
| #include <memory> |
| |
| #include "base/command_line.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/win/windows_version.h" |
| #include "ui/gfx/native_widget_types.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_implementation.h" |
| #include "ui/gl/gl_surface_egl.h" |
| #include "ui/gl/gl_surface_osmesa.h" |
| #include "ui/gl/gl_surface_stub.h" |
| #include "ui/gl/gl_surface_wgl.h" |
| #include "ui/gl/vsync_provider_win.h" |
| |
| // From ANGLE's egl/eglext.h. |
| #if !defined(EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE) |
| #define EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE \ |
| reinterpret_cast<EGLNativeDisplayType>(-2) |
| #endif |
| |
| namespace gl { |
| |
| // This OSMesa GL surface can use GDI to swap the contents of the buffer to a |
| // view. |
| class NativeViewGLSurfaceOSMesa : public GLSurfaceOSMesa { |
| public: |
| explicit NativeViewGLSurfaceOSMesa(gfx::AcceleratedWidget window); |
| |
| // Implement subset of GLSurface. |
| bool Initialize(GLSurface::Format format) override; |
| void Destroy() override; |
| bool IsOffscreen() override; |
| gfx::SwapResult SwapBuffers() override; |
| bool SupportsPostSubBuffer() override; |
| gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override; |
| |
| private: |
| ~NativeViewGLSurfaceOSMesa() override; |
| |
| gfx::AcceleratedWidget window_; |
| HDC device_context_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceOSMesa); |
| }; |
| |
| NativeViewGLSurfaceOSMesa::NativeViewGLSurfaceOSMesa( |
| gfx::AcceleratedWidget window) |
| : GLSurfaceOSMesa(SURFACE_OSMESA_RGBA, gfx::Size(1, 1)), |
| window_(window), |
| device_context_(NULL) { |
| DCHECK(window); |
| } |
| |
| NativeViewGLSurfaceOSMesa::~NativeViewGLSurfaceOSMesa() { |
| Destroy(); |
| } |
| |
| bool NativeViewGLSurfaceOSMesa::Initialize(GLSurface::Format format) { |
| if (!GLSurfaceOSMesa::Initialize(format)) |
| return false; |
| |
| device_context_ = GetDC(window_); |
| return true; |
| } |
| |
| void NativeViewGLSurfaceOSMesa::Destroy() { |
| if (window_ && device_context_) |
| ReleaseDC(window_, device_context_); |
| |
| device_context_ = NULL; |
| |
| GLSurfaceOSMesa::Destroy(); |
| } |
| |
| bool NativeViewGLSurfaceOSMesa::IsOffscreen() { |
| return false; |
| } |
| |
| gfx::SwapResult NativeViewGLSurfaceOSMesa::SwapBuffers() { |
| DCHECK(device_context_); |
| |
| gfx::Size size = GetSize(); |
| |
| // Note: negating the height below causes GDI to treat the bitmap data as row |
| // 0 being at the top. |
| BITMAPV4HEADER info = { sizeof(BITMAPV4HEADER) }; |
| info.bV4Width = size.width(); |
| info.bV4Height = -size.height(); |
| info.bV4Planes = 1; |
| info.bV4BitCount = 32; |
| info.bV4V4Compression = BI_BITFIELDS; |
| info.bV4RedMask = 0x000000FF; |
| info.bV4GreenMask = 0x0000FF00; |
| info.bV4BlueMask = 0x00FF0000; |
| info.bV4AlphaMask = 0xFF000000; |
| |
| // Copy the back buffer to the window's device context. Do not check whether |
| // StretchDIBits succeeds or not. It will fail if the window has been |
| // destroyed but it is preferable to allow rendering to silently fail if the |
| // window is destroyed. This is because the primary application of this |
| // class of GLContext is for testing and we do not want every GL related ui / |
| // browser test to become flaky if there is a race condition between GL |
| // context destruction and window destruction. |
| StretchDIBits(device_context_, |
| 0, 0, size.width(), size.height(), |
| 0, 0, size.width(), size.height(), |
| GetHandle(), |
| reinterpret_cast<BITMAPINFO*>(&info), |
| DIB_RGB_COLORS, |
| SRCCOPY); |
| |
| return gfx::SwapResult::SWAP_ACK; |
| } |
| |
| bool NativeViewGLSurfaceOSMesa::SupportsPostSubBuffer() { |
| return true; |
| } |
| |
| gfx::SwapResult NativeViewGLSurfaceOSMesa::PostSubBuffer(int x, |
| int y, |
| int width, |
| int height) { |
| DCHECK(device_context_); |
| |
| gfx::Size size = GetSize(); |
| |
| // Note: negating the height below causes GDI to treat the bitmap data as row |
| // 0 being at the top. |
| BITMAPV4HEADER info = { sizeof(BITMAPV4HEADER) }; |
| info.bV4Width = size.width(); |
| info.bV4Height = -size.height(); |
| info.bV4Planes = 1; |
| info.bV4BitCount = 32; |
| info.bV4V4Compression = BI_BITFIELDS; |
| info.bV4RedMask = 0x000000FF; |
| info.bV4GreenMask = 0x0000FF00; |
| info.bV4BlueMask = 0x00FF0000; |
| info.bV4AlphaMask = 0xFF000000; |
| |
| // Copy the back buffer to the window's device context. Do not check whether |
| // StretchDIBits succeeds or not. It will fail if the window has been |
| // destroyed but it is preferable to allow rendering to silently fail if the |
| // window is destroyed. This is because the primary application of this |
| // class of GLContext is for testing and we do not want every GL related ui / |
| // browser test to become flaky if there is a race condition between GL |
| // context destruction and window destruction. |
| StretchDIBits(device_context_, |
| x, size.height() - y - height, width, height, |
| x, y, width, height, |
| GetHandle(), |
| reinterpret_cast<BITMAPINFO*>(&info), |
| DIB_RGB_COLORS, |
| SRCCOPY); |
| |
| return gfx::SwapResult::SWAP_ACK; |
| } |
| |
| scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface( |
| gfx::AcceleratedWidget window) { |
| TRACE_EVENT0("gpu", "GLSurface::CreateViewGLSurface"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationOSMesaGL: { |
| scoped_refptr<GLSurface> surface( |
| new NativeViewGLSurfaceOSMesa(window)); |
| if (!surface->Initialize()) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationEGLGLES2: { |
| DCHECK(window != gfx::kNullAcceleratedWidget); |
| scoped_refptr<NativeViewGLSurfaceEGL> surface( |
| new NativeViewGLSurfaceEGL(window)); |
| std::unique_ptr<gfx::VSyncProvider> sync_provider; |
| sync_provider.reset(new VSyncProviderWin(window)); |
| if (!surface->Initialize(std::move(sync_provider))) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationDesktopGL: { |
| scoped_refptr<GLSurface> surface(new NativeViewGLSurfaceWGL( |
| window)); |
| if (!surface->Initialize()) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationMockGL: |
| return new GLSurfaceStub; |
| default: |
| NOTREACHED(); |
| return NULL; |
| } |
| } |
| |
| scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface( |
| const gfx::Size& size) { |
| TRACE_EVENT0("gpu", "GLSurface::CreateOffscreenGLSurface"); |
| switch (GetGLImplementation()) { |
| case kGLImplementationOSMesaGL: { |
| scoped_refptr<GLSurface> surface( |
| new GLSurfaceOSMesa(SURFACE_OSMESA_RGBA, size)); |
| if (!surface->Initialize()) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationEGLGLES2: { |
| scoped_refptr<GLSurface> surface(new PbufferGLSurfaceEGL(size)); |
| if (!surface->Initialize()) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationDesktopGL: { |
| scoped_refptr<GLSurface> surface(new PbufferGLSurfaceWGL(size)); |
| if (!surface->Initialize()) |
| return NULL; |
| |
| return surface; |
| } |
| case kGLImplementationMockGL: |
| return new GLSurfaceStub; |
| default: |
| NOTREACHED(); |
| return NULL; |
| } |
| } |
| |
| EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() { |
| return GetDC(NULL); |
| } |
| |
| } // namespace gl |