diff options
author | Thiago Marcos P. Santos <thiago@mapbox.com> | 2016-08-17 15:55:51 +0300 |
---|---|---|
committer | Thiago Marcos P. Santos <thiago@mapbox.com> | 2016-08-22 16:52:02 +0300 |
commit | 547af7475ef0004cbf7542a57e23de62e8590cc3 (patch) | |
tree | 5504a40458744ec23ea04c4539fe4e56ba430101 /platform/qt | |
parent | 6761b325fb18ff31a05177678d8a0ad81c5c0d81 (diff) | |
download | qtlocation-mapboxgl-547af7475ef0004cbf7542a57e23de62e8590cc3.tar.gz |
[Qt] Implement a Qt headless renderer
Using legacy QGLWidget because we support Qt4.
Diffstat (limited to 'platform/qt')
-rw-r--r-- | platform/qt/config.cmake | 9 | ||||
-rw-r--r-- | platform/qt/qt.cmake | 7 | ||||
-rw-r--r-- | platform/qt/test/headless_view_qt.cpp | 106 |
3 files changed, 113 insertions, 9 deletions
diff --git a/platform/qt/config.cmake b/platform/qt/config.cmake index 46cc98eb81..f22e4c827b 100644 --- a/platform/qt/config.cmake +++ b/platform/qt/config.cmake @@ -40,15 +40,20 @@ macro(mbgl_platform_core) endif() endmacro() -# TODO: Implement a Qt headless view, using offscreen -# graphics system. macro(mbgl_platform_test) target_sources(mbgl-test PRIVATE test/src/main.cpp + PRIVATE platform/qt/test/headless_view_qt.cpp + PRIVATE platform/default/headless_display.cpp + PRIVATE platform/default/headless_view.cpp ) set_source_files_properties( test/src/main.cpp PROPERTIES COMPILE_FLAGS -DWORK_DIRECTORY="${CMAKE_SOURCE_DIR}" ) + + target_link_libraries(mbgl-test + ${MBGL_QT_LIBRARIES} + ) endmacro() diff --git a/platform/qt/qt.cmake b/platform/qt/qt.cmake index 9033bcfe37..0122f8922d 100644 --- a/platform/qt/qt.cmake +++ b/platform/qt/qt.cmake @@ -29,10 +29,6 @@ set(MBGL_QT_FILES # Misc PRIVATE platform/default/log_stderr.cpp - # Headless headless_view_cgl - PRIVATE platform/default/headless_display.cpp - PRIVATE platform/default/headless_view.cpp - # Platform integration PRIVATE platform/qt/src/async_task.cpp PRIVATE platform/qt/src/async_task_impl.hpp @@ -77,7 +73,6 @@ endif() if (CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin") list(APPEND MBGL_QT_FILES PRIVATE platform/darwin/src/nsthread.mm - PRIVATE platform/darwin/src/headless_view_cgl.cpp ) list(APPEND MBGL_QT_LIBRARIES PRIVATE "-framework Foundation" @@ -86,10 +81,8 @@ if (CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin") else() list(APPEND MBGL_QT_FILES PRIVATE platform/default/thread.cpp - PRIVATE platform/default/headless_view_glx.cpp ) list(APPEND MBGL_QT_LIBRARIES PRIVATE -lGL - PRIVATE -lX11 ) endif() diff --git a/platform/qt/test/headless_view_qt.cpp b/platform/qt/test/headless_view_qt.cpp new file mode 100644 index 0000000000..03ecb741ab --- /dev/null +++ b/platform/qt/test/headless_view_qt.cpp @@ -0,0 +1,106 @@ +#include <mbgl/platform/default/headless_display.hpp> +#include <mbgl/platform/default/headless_view.hpp> + +#include <QApplication> +#include <QGLContext> +#include <QGLWidget> + +#if QT_VERSION >= 0x050000 +#include <QOpenGLContext> +#endif + +namespace mbgl { + +gl::glProc HeadlessView::initializeExtension(const char* name) { +#if QT_VERSION >= 0x050000 + QOpenGLContext* thisContext = QOpenGLContext::currentContext(); + return thisContext->getProcAddress(name); +#else + const QGLContext* thisContext = QGLContext::currentContext(); + return reinterpret_cast<mbgl::gl::glProc>(thisContext->getProcAddress(name)); +#endif +} + +void HeadlessView::createContext() { + static const char* argv[] = { "mbgl" }; + static int argc = 1; + static auto* app = new QApplication(argc, const_cast<char**>(argv)); + + Q_UNUSED(app); + + glContext = new QGLWidget; +} + +void HeadlessView::destroyContext() { + delete glContext; +} + +void HeadlessView::resizeFramebuffer() { + const unsigned int w = dimensions[0] * pixelRatio; + const unsigned int h = dimensions[1] * pixelRatio; + + // Create depth/stencil buffer + MBGL_CHECK_ERROR(glGenRenderbuffersEXT(1, &fboDepthStencil)); + MBGL_CHECK_ERROR(glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, fboDepthStencil)); + MBGL_CHECK_ERROR(glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, w, h)); + MBGL_CHECK_ERROR(glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0)); + + MBGL_CHECK_ERROR(glGenRenderbuffersEXT(1, &fboColor)); + MBGL_CHECK_ERROR(glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, fboColor)); + MBGL_CHECK_ERROR(glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA8, w, h)); + MBGL_CHECK_ERROR(glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0)); + + MBGL_CHECK_ERROR(glGenFramebuffersEXT(1, &fbo)); + MBGL_CHECK_ERROR(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo)); + + MBGL_CHECK_ERROR(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, fboColor)); + MBGL_CHECK_ERROR(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER_EXT, fboDepthStencil)); + + GLenum status = MBGL_CHECK_ERROR(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT)); + + if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { + std::string error("Couldn't create framebuffer: "); + switch (status) { + case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT: (error += "incomplete attachment"); break; + case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT: error += "incomplete missing attachment"; break; + case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT: error += "incomplete dimensions"; break; + case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT: error += "incomplete formats"; break; + case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT: error += "incomplete draw buffer"; break; + case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT: error += "incomplete read buffer"; break; + case GL_FRAMEBUFFER_UNSUPPORTED: error += "unsupported"; break; + default: error += "other"; break; + } + throw std::runtime_error(error); + } + + MBGL_CHECK_ERROR(glViewport(0, 0, w, h)); +} + +void HeadlessView::clearBuffers() { + MBGL_CHECK_ERROR(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)); + + if (fbo) { + MBGL_CHECK_ERROR(glDeleteFramebuffersEXT(1, &fbo)); + fbo = 0; + } + + if (fboColor) { + MBGL_CHECK_ERROR(glDeleteRenderbuffersEXT(1, &fboColor)); + fboColor = 0; + } + + if (fboDepthStencil) { + MBGL_CHECK_ERROR(glDeleteRenderbuffersEXT(1, &fboDepthStencil)); + fboDepthStencil = 0; + } +} + +void HeadlessView::activateContext() { + glContext->makeCurrent(); +} + +void HeadlessView::deactivateContext() { + glContext->doneCurrent(); +} + +} // namespace mbgl |