| /* |
| * Copyright (C) 2016 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "AcceleratedBackingStoreWayland.h" |
| |
| #if PLATFORM(WAYLAND) && USE(EGL) |
| |
| #include "WaylandCompositor.h" |
| #include "WebPageProxy.h" |
| #include <WebCore/CairoUtilities.h> |
| #include <WebCore/GLContext.h> |
| |
| #if USE(OPENGL_ES) |
| #include <GLES2/gl2.h> |
| #else |
| #include <WebCore/OpenGLShims.h> |
| #endif |
| |
| namespace WebKit { |
| using namespace WebCore; |
| |
| std::unique_ptr<AcceleratedBackingStoreWayland> AcceleratedBackingStoreWayland::create(WebPageProxy& webPage) |
| { |
| if (!WaylandCompositor::singleton().isRunning()) |
| return nullptr; |
| return std::unique_ptr<AcceleratedBackingStoreWayland>(new AcceleratedBackingStoreWayland(webPage)); |
| } |
| |
| AcceleratedBackingStoreWayland::AcceleratedBackingStoreWayland(WebPageProxy& webPage) |
| : AcceleratedBackingStore(webPage) |
| { |
| WaylandCompositor::singleton().registerWebPage(m_webPage); |
| } |
| |
| AcceleratedBackingStoreWayland::~AcceleratedBackingStoreWayland() |
| { |
| WaylandCompositor::singleton().unregisterWebPage(m_webPage); |
| |
| #if GTK_CHECK_VERSION(3, 16, 0) |
| if (m_gdkGLContext && m_gdkGLContext.get() == gdk_gl_context_get_current()) |
| gdk_gl_context_clear_current(); |
| #endif |
| } |
| |
| void AcceleratedBackingStoreWayland::tryEnsureGLContext() |
| { |
| if (m_glContextInitialized) |
| return; |
| |
| m_glContextInitialized = true; |
| |
| #if GTK_CHECK_VERSION(3, 16, 0) |
| GUniqueOutPtr<GError> error; |
| m_gdkGLContext = adoptGRef(gdk_window_create_gl_context(gtk_widget_get_window(m_webPage.viewWidget()), &error.outPtr())); |
| if (m_gdkGLContext) { |
| #if USE(OPENGL_ES) |
| gdk_gl_context_set_use_es(m_gdkGLContext.get(), TRUE); |
| #endif |
| return; |
| } |
| |
| g_warning("GDK is not able to create a GL context, falling back to glReadPixels (slow!): %s", error->message); |
| #endif |
| |
| m_glContext = GLContext::createOffscreenContext(); |
| } |
| |
| bool AcceleratedBackingStoreWayland::makeContextCurrent() |
| { |
| tryEnsureGLContext(); |
| |
| #if GTK_CHECK_VERSION(3, 16, 0) |
| if (m_gdkGLContext) { |
| gdk_gl_context_make_current(m_gdkGLContext.get()); |
| return true; |
| } |
| #endif |
| |
| return m_glContext ? m_glContext->makeContextCurrent() : false; |
| } |
| |
| bool AcceleratedBackingStoreWayland::paint(cairo_t* cr, const IntRect& clipRect) |
| { |
| GLuint texture; |
| IntSize textureSize; |
| if (!WaylandCompositor::singleton().getTexture(m_webPage, texture, textureSize)) |
| return false; |
| |
| cairo_save(cr); |
| |
| #if GTK_CHECK_VERSION(3, 16, 0) |
| if (m_gdkGLContext) { |
| gdk_cairo_draw_from_gl(cr, gtk_widget_get_window(m_webPage.viewWidget()), texture, GL_TEXTURE, m_webPage.deviceScaleFactor(), 0, 0, textureSize.width(), textureSize.height()); |
| cairo_restore(cr); |
| return true; |
| } |
| #endif |
| |
| ASSERT(m_glContext); |
| |
| if (!m_surface || cairo_image_surface_get_width(m_surface.get()) != textureSize.width() || cairo_image_surface_get_height(m_surface.get()) != textureSize.height()) |
| m_surface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, textureSize.width(), textureSize.height())); |
| |
| cairoSurfaceSetDeviceScale(m_surface.get(), m_webPage.deviceScaleFactor(), m_webPage.deviceScaleFactor()); |
| |
| GLuint fb; |
| glGenFramebuffers(1, &fb); |
| glBindFramebuffer(GL_FRAMEBUFFER, fb); |
| glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0); |
| |
| glPixelStorei(GL_PACK_ALIGNMENT, 4); |
| |
| #if USE(OPENGL_ES) |
| unsigned char* data = cairo_image_surface_get_data(m_surface.get()); |
| if (cairo_image_surface_get_stride(m_surface.get()) == textureSize.width() * 4) |
| glReadPixels(0, 0, textureSize.width(), textureSize.height(), GL_RGBA, GL_UNSIGNED_BYTE, data); |
| else { |
| int strideBytes = cairo_image_surface_get_stride(m_surface.get()); |
| for (int i = 0; i < textureSize.height(); i++) { |
| unsigned char* dataOffset = data + i * strideBytes; |
| glReadPixels(0, i, textureSize.width(), 1, GL_RGBA, GL_UNSIGNED_BYTE, dataOffset); |
| } |
| } |
| |
| // Convert to BGRA. |
| int totalBytes = textureSize.width() * textureSize.height() * 4; |
| for (int i = 0; i < totalBytes; i += 4) |
| std::swap(data[i], data[i + 2]); |
| #else |
| glPixelStorei(GL_PACK_ROW_LENGTH, cairo_image_surface_get_stride(m_surface.get()) / 4); |
| glReadPixels(0, 0, textureSize.width(), textureSize.height(), GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, cairo_image_surface_get_data(m_surface.get())); |
| glPixelStorei(GL_PACK_ROW_LENGTH, 0); |
| #endif |
| |
| glBindFramebuffer(GL_FRAMEBUFFER, 0); |
| glDeleteFramebuffers(1, &fb); |
| |
| // The surface can be modified by the web process at any time, so we mark it |
| // as dirty to ensure we always render the updated contents as soon as possible. |
| cairo_surface_mark_dirty(m_surface.get()); |
| |
| // The compositor renders the texture flipped for gdk_cairo_draw_from_gl, fix that here. |
| cairo_matrix_t transform; |
| cairo_matrix_init(&transform, 1, 0, 0, -1, 0, textureSize.height() / m_webPage.deviceScaleFactor()); |
| cairo_transform(cr, &transform); |
| |
| cairo_rectangle(cr, clipRect.x(), clipRect.y(), clipRect.width(), clipRect.height()); |
| cairo_set_source_surface(cr, m_surface.get(), 0, 0); |
| cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
| cairo_fill(cr); |
| |
| cairo_restore(cr); |
| |
| return true; |
| } |
| |
| } // namespace WebKit |
| |
| #endif // PLATFORM(WAYLAND) && USE(EGL) |