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author | Thiago Marcos P. Santos <thiago@mapbox.com> | 2016-08-17 15:55:51 +0300 |
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committer | Thiago Marcos P. Santos <thiago@mapbox.com> | 2016-08-22 16:52:02 +0300 |
commit | 547af7475ef0004cbf7542a57e23de62e8590cc3 (patch) | |
tree | 5504a40458744ec23ea04c4539fe4e56ba430101 /platform/qt/test | |
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/test')
-rw-r--r-- | platform/qt/test/headless_view_qt.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
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 |