| // Copyright 2016 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_osmesa_win.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/gl/gl_bindings.h" |
| #include "ui/gl/gl_implementation.h" |
| #include "ui/gl/gl_surface_egl.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 { |
| |
| GLSurfaceOSMesaWin::GLSurfaceOSMesaWin(gfx::AcceleratedWidget window) |
| : GLSurfaceOSMesa(SURFACE_OSMESA_RGBA, gfx::Size(1, 1)), |
| window_(window), |
| device_context_(NULL) { |
| DCHECK(window); |
| } |
| |
| GLSurfaceOSMesaWin::~GLSurfaceOSMesaWin() { |
| Destroy(); |
| } |
| |
| bool GLSurfaceOSMesaWin::Initialize(GLSurface::Format format) { |
| if (!GLSurfaceOSMesa::Initialize(format)) |
| return false; |
| |
| device_context_ = GetDC(window_); |
| return true; |
| } |
| |
| void GLSurfaceOSMesaWin::Destroy() { |
| if (window_ && device_context_) |
| ReleaseDC(window_, device_context_); |
| |
| device_context_ = NULL; |
| |
| GLSurfaceOSMesa::Destroy(); |
| } |
| |
| bool GLSurfaceOSMesaWin::IsOffscreen() { |
| return false; |
| } |
| |
| gfx::SwapResult GLSurfaceOSMesaWin::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 GLSurfaceOSMesaWin::SupportsPostSubBuffer() { |
| return true; |
| } |
| |
| gfx::SwapResult GLSurfaceOSMesaWin::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; |
| } |
| |
| } // namespace gl |