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#include <mbgl/platform/default/headless_backend.hpp>
#include <mbgl/platform/default/headless_display.hpp>
#include <mbgl/platform/log.hpp>
#include <cassert>
#include <GL/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <gbm.h>
namespace mbgl {
gl::glProc HeadlessBackend::initializeExtension(const char* name) {
return eglGetProcAddress(name);
}
void HeadlessBackend::createContext() {
auto dpy = display->dpy;
auto config = display->config;
assert(dpy != EGL_NO_DISPLAY);
assert(glContext == EGL_NO_CONTEXT);
assert(config != nullptr);
eglBindAPI(EGL_OPENGL_API);
glContext = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL);
if (glContext == EGL_NO_CONTEXT) {
mbgl::Log::Error(mbgl::Event::OpenGL, "eglCreateContext() returned error 0x%04x",
eglGetError());
throw std::runtime_error("Error creating GL context object");
}
}
void HeadlessBackend::destroyContext() {
if (glContext) {
auto dpy = display->dpy;
if (!eglDestroyContext(dpy, glContext)) {
throw std::runtime_error("Failed to destroy context.");
}
glContext = nullptr;
}
}
void HeadlessBackend::activateContext() {
auto dpy = display->dpy;
if (!eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, glContext)) {
throw std::runtime_error("Switching OpenGL context failed.\n");
}
}
void HeadlessBackend::deactivateContext() {
auto dpy = display->dpy;
if (!eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)) {
throw std::runtime_error("Removing OpenGL context failed.\n");
}
}
} // namespace mbgl
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