32b6f2fa03
Original author: Tiago Vignatti <tvignatti@gmail.com> Calling X11 window system is superfluous for headless rendering. This patch implements EGL platform using GBM, which is slightly more simple than the GLX path when using X11. In principle there are no big advantages in terms of performance etc. My motivation behind this was to get in touch with the code and the project. For testing I'm using: $ unset DISPLAY && ./build/linux-x86_64/Debug/mbgl-test v2: rebased patch against the new cmake changes; walk through render node to find a valid one; remove EGLSurface completely cause windows are not needed here.
630 lines
22 KiB
C++
630 lines
22 KiB
C++
#include <mbgl/platform/default/glfw_view.hpp>
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#include <mbgl/annotation/annotation.hpp>
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#include <mbgl/sprite/sprite_image.hpp>
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#include <mbgl/style/transition_options.hpp>
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#include <mbgl/gl/gl.hpp>
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#include <mbgl/gl/extension.hpp>
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#include <mbgl/gl/context.hpp>
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#include <mbgl/platform/log.hpp>
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#include <mbgl/platform/platform.hpp>
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#include <mbgl/util/string.hpp>
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#include <mbgl/util/chrono.hpp>
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#include <mbgl/map/camera.hpp>
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#include <mbgl/gl/state.hpp>
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#include <mbgl/gl/value.hpp>
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#include <cassert>
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#include <cstdlib>
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void glfwError(int error, const char *description) {
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mbgl::Log::Error(mbgl::Event::OpenGL, "GLFW error (%i): %s", error, description);
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assert(false);
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}
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GLFWView::GLFWView(bool fullscreen_, bool benchmark_)
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: fullscreen(fullscreen_), benchmark(benchmark_) {
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glfwSetErrorCallback(glfwError);
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std::srand(std::time(nullptr));
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if (!glfwInit()) {
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mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize glfw");
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exit(1);
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}
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GLFWmonitor *monitor = nullptr;
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if (fullscreen) {
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monitor = glfwGetPrimaryMonitor();
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auto videoMode = glfwGetVideoMode(monitor);
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width = videoMode->width;
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height = videoMode->height;
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}
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#ifdef DEBUG
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glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE);
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#endif
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#ifdef GL_ES_VERSION_2_0
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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#endif
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glfwWindowHint(GLFW_RED_BITS, 8);
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glfwWindowHint(GLFW_GREEN_BITS, 8);
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glfwWindowHint(GLFW_BLUE_BITS, 8);
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glfwWindowHint(GLFW_ALPHA_BITS, 8);
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glfwWindowHint(GLFW_STENCIL_BITS, 8);
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glfwWindowHint(GLFW_DEPTH_BITS, 16);
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window = glfwCreateWindow(width, height, "Mapbox GL", monitor, nullptr);
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if (!window) {
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glfwTerminate();
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mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize window");
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exit(1);
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}
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glfwSetWindowUserPointer(window, this);
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glfwMakeContextCurrent(window);
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if (benchmark) {
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// Disables vsync on platforms that support it.
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glfwSwapInterval(0);
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} else {
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glfwSwapInterval(1);
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}
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glfwSetCursorPosCallback(window, onMouseMove);
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glfwSetMouseButtonCallback(window, onMouseClick);
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glfwSetWindowSizeCallback(window, onWindowResize);
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glfwSetFramebufferSizeCallback(window, onFramebufferResize);
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glfwSetScrollCallback(window, onScroll);
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glfwSetKeyCallback(window, onKey);
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mbgl::gl::InitializeExtensions(glfwGetProcAddress);
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glfwGetWindowSize(window, &width, &height);
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glfwGetFramebufferSize(window, &fbWidth, &fbHeight);
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pixelRatio = static_cast<float>(fbWidth) / width;
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glfwMakeContextCurrent(nullptr);
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printf("\n");
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printf("================================================================================\n");
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printf("\n");
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printf("- Press `S` to cycle through bundled styles\n");
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printf("- Press `X` to reset the transform\n");
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printf("- Press `N` to reset north\n");
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printf("- Press `R` to toggle any available `night` style class\n");
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printf("- Press `Z` to cycle through north orientations\n");
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printf("- Prezz `X` to cycle through the viewport modes\n");
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printf("- Press `A` to cycle through Mapbox offices in the world + dateline monument\n");
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printf("- Press `B` to cycle through the color, stencil, and depth buffer\n");
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printf("\n");
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printf("- Press `1` through `6` to add increasing numbers of point annotations for testing\n");
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printf("- Press `7` through `0` to add increasing numbers of shape annotations for testing\n");
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printf("\n");
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printf("- Press `Q` to remove annotations\n");
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printf("- Press `P` to add a random custom runtime imagery annotation\n");
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printf("- Press `L` to add a random line annotation\n");
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printf("- Press `W` to pop the last-added annotation off\n");
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printf("\n");
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printf("- `Control` + mouse drag to rotate\n");
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printf("- `Shift` + mouse drag to tilt\n");
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printf("\n");
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printf("- Press `Tab` to cycle through the map debug options\n");
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printf("- Press `Esc` to quit\n");
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printf("\n");
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printf("================================================================================\n");
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printf("\n");
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}
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GLFWView::~GLFWView() {
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glfwDestroyWindow(window);
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glfwTerminate();
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}
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void GLFWView::setMap(mbgl::Map *map_) {
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map = map_;
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map->addAnnotationIcon("default_marker", makeSpriteImage(22, 22, 1));
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}
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void GLFWView::updateViewBinding() {
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getContext().bindFramebuffer.setCurrentValue(0);
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assert(mbgl::gl::value::BindFramebuffer::Get() == getContext().bindFramebuffer.getCurrentValue());
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getContext().viewport.setCurrentValue({ 0, 0, getFramebufferSize() });
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assert(mbgl::gl::value::Viewport::Get() == getContext().viewport.getCurrentValue());
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}
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void GLFWView::bind() {
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getContext().bindFramebuffer = 0;
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getContext().viewport = { 0, 0, getFramebufferSize() };
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}
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void GLFWView::onKey(GLFWwindow *window, int key, int /*scancode*/, int action, int mods) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (action == GLFW_RELEASE) {
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switch (key) {
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case GLFW_KEY_ESCAPE:
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glfwSetWindowShouldClose(window, true);
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break;
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case GLFW_KEY_TAB:
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view->map->cycleDebugOptions();
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break;
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case GLFW_KEY_X:
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if (!mods)
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view->map->resetPosition();
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break;
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case GLFW_KEY_S:
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if (view->changeStyleCallback)
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view->changeStyleCallback();
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break;
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case GLFW_KEY_R:
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if (!mods) {
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static const mbgl::style::TransitionOptions transition { { mbgl::Milliseconds(300) } };
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view->map->setTransitionOptions(transition);
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if (view->map->hasClass("night")) {
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view->map->removeClass("night");
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} else {
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view->map->addClass("night");
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}
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}
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break;
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#if not MBGL_USE_GLES2
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case GLFW_KEY_B: {
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auto debug = view->map->getDebug();
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if (debug & mbgl::MapDebugOptions::StencilClip) {
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debug &= ~mbgl::MapDebugOptions::StencilClip;
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debug |= mbgl::MapDebugOptions::DepthBuffer;
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} else if (debug & mbgl::MapDebugOptions::DepthBuffer) {
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debug &= ~mbgl::MapDebugOptions::DepthBuffer;
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} else {
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debug |= mbgl::MapDebugOptions::StencilClip;
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}
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view->map->setDebug(debug);
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} break;
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#endif // MBGL_USE_GLES2
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case GLFW_KEY_N:
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if (!mods)
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view->map->resetNorth();
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break;
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case GLFW_KEY_Z:
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view->nextOrientation();
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break;
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case GLFW_KEY_Q: {
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auto result = view->map->queryPointAnnotations({ {}, { double(view->getSize().width), double(view->getSize().height) } });
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printf("visible point annotations: %lu\n", result.size());
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} break;
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case GLFW_KEY_C:
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view->clearAnnotations();
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break;
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case GLFW_KEY_P:
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view->addRandomCustomPointAnnotations(1);
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break;
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case GLFW_KEY_L:
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view->addRandomLineAnnotations(1);
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break;
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case GLFW_KEY_A: {
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// XXX Fix precision loss in flyTo:
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// https://github.com/mapbox/mapbox-gl-native/issues/4298
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static const std::vector<mbgl::LatLng> places = {
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mbgl::LatLng { -16.796665, -179.999983 }, // Dateline monument
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mbgl::LatLng { 12.9810542, 77.6345551 }, // Mapbox Bengaluru, India
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mbgl::LatLng { -13.15607,-74.21773 }, // Mapbox Peru
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mbgl::LatLng { 37.77572, -122.4158818 }, // Mapbox SF, USA
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mbgl::LatLng { 38.91318,-77.03255 }, // Mapbox DC, USA
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};
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static size_t nextPlace = 0;
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mbgl::CameraOptions cameraOptions;
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cameraOptions.center = places[nextPlace++];
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cameraOptions.zoom = 20;
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cameraOptions.pitch = 30;
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mbgl::AnimationOptions animationOptions(mbgl::Seconds(10));
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view->map->flyTo(cameraOptions, animationOptions);
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nextPlace = nextPlace % places.size();
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} break;
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}
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}
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if (action == GLFW_RELEASE || action == GLFW_REPEAT) {
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switch (key) {
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case GLFW_KEY_W: view->popAnnotation(); break;
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case GLFW_KEY_1: view->addRandomPointAnnotations(1); break;
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case GLFW_KEY_2: view->addRandomPointAnnotations(10); break;
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case GLFW_KEY_3: view->addRandomPointAnnotations(100); break;
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case GLFW_KEY_4: view->addRandomPointAnnotations(1000); break;
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case GLFW_KEY_5: view->addRandomPointAnnotations(10000); break;
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case GLFW_KEY_6: view->addRandomPointAnnotations(100000); break;
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case GLFW_KEY_7: view->addRandomShapeAnnotations(1); break;
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case GLFW_KEY_8: view->addRandomShapeAnnotations(10); break;
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case GLFW_KEY_9: view->addRandomShapeAnnotations(100); break;
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case GLFW_KEY_0: view->addRandomShapeAnnotations(1000); break;
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}
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}
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}
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mbgl::Color GLFWView::makeRandomColor() const {
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const float r = 1.0f * (float(std::rand()) / RAND_MAX);
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const float g = 1.0f * (float(std::rand()) / RAND_MAX);
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const float b = 1.0f * (float(std::rand()) / RAND_MAX);
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return { r, g, b, 1.0f };
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}
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mbgl::Point<double> GLFWView::makeRandomPoint() const {
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const double x = width * double(std::rand()) / RAND_MAX;
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const double y = height * double(std::rand()) / RAND_MAX;
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mbgl::LatLng latLng = map->latLngForPixel({ x, y });
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return { latLng.longitude, latLng.latitude };
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}
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std::shared_ptr<const mbgl::SpriteImage>
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GLFWView::makeSpriteImage(int width, int height, float pixelRatio) {
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const int r = 255 * (double(std::rand()) / RAND_MAX);
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const int g = 255 * (double(std::rand()) / RAND_MAX);
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const int b = 255 * (double(std::rand()) / RAND_MAX);
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const int w = std::ceil(pixelRatio * width);
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const int h = std::ceil(pixelRatio * height);
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mbgl::PremultipliedImage image({ static_cast<uint32_t>(w), static_cast<uint32_t>(h) });
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auto data = reinterpret_cast<uint32_t*>(image.data.get());
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const int dist = (w / 2) * (w / 2);
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for (int y = 0; y < h; y++) {
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for (int x = 0; x < w; x++) {
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const int dx = x - w / 2;
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const int dy = y - h / 2;
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const int diff = dist - (dx * dx + dy * dy);
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if (diff > 0) {
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const int a = std::min(0xFF, diff) * 0xFF / dist;
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// Premultiply the rgb values with alpha
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data[w * y + x] =
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(a << 24) | ((a * r / 0xFF) << 16) | ((a * g / 0xFF) << 8) | (a * b / 0xFF);
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}
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}
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}
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return std::make_shared<mbgl::SpriteImage>(std::move(image), pixelRatio);
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}
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void GLFWView::nextOrientation() {
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using NO = mbgl::NorthOrientation;
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switch (map->getNorthOrientation()) {
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case NO::Upwards: map->setNorthOrientation(NO::Rightwards); break;
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case NO::Rightwards: map->setNorthOrientation(NO::Downwards); break;
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case NO::Downwards: map->setNorthOrientation(NO::Leftwards); break;
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default: map->setNorthOrientation(NO::Upwards); break;
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}
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}
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void GLFWView::addRandomCustomPointAnnotations(int count) {
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for (int i = 0; i < count; i++) {
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static int spriteID = 1;
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const auto name = std::string{ "marker-" } + mbgl::util::toString(spriteID++);
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map->addAnnotationIcon(name, makeSpriteImage(22, 22, 1));
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spriteIDs.push_back(name);
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annotationIDs.push_back(map->addAnnotation(mbgl::SymbolAnnotation { makeRandomPoint(), name }));
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}
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}
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void GLFWView::addRandomPointAnnotations(int count) {
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for (int i = 0; i < count; ++i) {
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annotationIDs.push_back(map->addAnnotation(mbgl::SymbolAnnotation { makeRandomPoint(), "default_marker" }));
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}
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}
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void GLFWView::addRandomLineAnnotations(int count) {
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for (int i = 0; i < count; ++i) {
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mbgl::LineString<double> lineString;
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for (int j = 0; j < 3; ++j) {
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lineString.push_back(makeRandomPoint());
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}
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annotationIDs.push_back(map->addAnnotation(mbgl::LineAnnotation { lineString, 1.0f, 2.0f, { makeRandomColor() } }));
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}
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}
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void GLFWView::addRandomShapeAnnotations(int count) {
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for (int i = 0; i < count; ++i) {
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mbgl::Polygon<double> triangle;
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triangle.push_back({ makeRandomPoint(), makeRandomPoint(), makeRandomPoint() });
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annotationIDs.push_back(map->addAnnotation(mbgl::FillAnnotation { triangle, 0.5f, { makeRandomColor() }, { makeRandomColor() } }));
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}
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}
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void GLFWView::clearAnnotations() {
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for (const auto& id : annotationIDs) {
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map->removeAnnotation(id);
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}
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annotationIDs.clear();
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}
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void GLFWView::popAnnotation() {
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if (annotationIDs.empty()) {
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return;
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}
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map->removeAnnotation(annotationIDs.back());
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annotationIDs.pop_back();
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}
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void GLFWView::onScroll(GLFWwindow *window, double /*xOffset*/, double yOffset) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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double delta = yOffset * 40;
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bool isWheel = delta != 0 && std::fmod(delta, 4.000244140625) == 0;
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double absDelta = delta < 0 ? -delta : delta;
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double scale = 2.0 / (1.0 + std::exp(-absDelta / 100.0));
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// Make the scroll wheel a bit slower.
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if (!isWheel) {
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scale = (scale - 1.0) / 2.0 + 1.0;
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}
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// Zooming out.
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if (delta < 0 && scale != 0) {
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scale = 1.0 / scale;
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}
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view->map->scaleBy(scale, mbgl::ScreenCoordinate { view->lastX, view->lastY });
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}
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void GLFWView::onWindowResize(GLFWwindow *window, int width, int height) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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view->width = width;
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view->height = height;
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view->map->setSize({ static_cast<uint32_t>(view->width), static_cast<uint32_t>(view->height) });
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}
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void GLFWView::onFramebufferResize(GLFWwindow *window, int width, int height) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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view->fbWidth = width;
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view->fbHeight = height;
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// This is only triggered when the framebuffer is resized, but not the window. It can
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// happen when you move the window between screens with a different pixel ratio.
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// We are forcing a repaint my invalidating the view, which triggers a rerender with the
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// new framebuffer dimensions.
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view->invalidate();
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}
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void GLFWView::onMouseClick(GLFWwindow *window, int button, int action, int modifiers) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (button == GLFW_MOUSE_BUTTON_RIGHT ||
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(button == GLFW_MOUSE_BUTTON_LEFT && modifiers & GLFW_MOD_CONTROL)) {
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view->rotating = action == GLFW_PRESS;
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view->map->setGestureInProgress(view->rotating);
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} else if (button == GLFW_MOUSE_BUTTON_LEFT && (modifiers & GLFW_MOD_SHIFT)) {
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view->pitching = action == GLFW_PRESS;
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view->map->setGestureInProgress(view->pitching);
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} else if (button == GLFW_MOUSE_BUTTON_LEFT) {
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view->tracking = action == GLFW_PRESS;
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view->map->setGestureInProgress(view->tracking);
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if (action == GLFW_RELEASE) {
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double now = glfwGetTime();
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if (now - view->lastClick < 0.4 /* ms */) {
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if (modifiers & GLFW_MOD_SHIFT) {
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view->map->scaleBy(0.5, mbgl::ScreenCoordinate { view->lastX, view->lastY }, mbgl::Milliseconds(500));
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} else {
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view->map->scaleBy(2.0, mbgl::ScreenCoordinate { view->lastX, view->lastY }, mbgl::Milliseconds(500));
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}
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}
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view->lastClick = now;
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}
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}
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}
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void GLFWView::onMouseMove(GLFWwindow *window, double x, double y) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (view->tracking) {
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double dx = x - view->lastX;
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double dy = y - view->lastY;
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if (dx || dy) {
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view->map->setLatLng(
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view->map->latLngForPixel(mbgl::ScreenCoordinate(x - dx, y - dy)),
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mbgl::ScreenCoordinate(x, y));
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}
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} else if (view->rotating) {
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view->map->rotateBy({ view->lastX, view->lastY }, { x, y });
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} else if (view->pitching) {
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const double dy = y - view->lastY;
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if (dy) {
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view->map->setPitch(view->map->getPitch() - dy / 2);
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}
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}
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view->lastX = x;
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view->lastY = y;
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}
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void GLFWView::run() {
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auto callback = [&] {
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if (glfwWindowShouldClose(window)) {
|
|
runLoop.stop();
|
|
return;
|
|
}
|
|
|
|
glfwPollEvents();
|
|
|
|
if (dirty) {
|
|
const double started = glfwGetTime();
|
|
|
|
glfwMakeContextCurrent(window);
|
|
|
|
updateViewBinding();
|
|
map->render(*this);
|
|
|
|
glfwSwapBuffers(window);
|
|
|
|
report(1000 * (glfwGetTime() - started));
|
|
if (benchmark) {
|
|
invalidate();
|
|
}
|
|
|
|
dirty = false;
|
|
}
|
|
};
|
|
|
|
frameTick.start(mbgl::Duration::zero(), mbgl::Milliseconds(1000 / 60), callback);
|
|
#if defined(__APPLE__)
|
|
while (!glfwWindowShouldClose(window)) runLoop.run();
|
|
#else
|
|
runLoop.run();
|
|
#endif
|
|
}
|
|
|
|
float GLFWView::getPixelRatio() const {
|
|
return pixelRatio;
|
|
}
|
|
|
|
mbgl::Size GLFWView::getSize() const {
|
|
return { static_cast<uint32_t>(width), static_cast<uint32_t>(height) };
|
|
}
|
|
|
|
mbgl::Size GLFWView::getFramebufferSize() const {
|
|
return { static_cast<uint32_t>(fbWidth), static_cast<uint32_t>(fbHeight) };
|
|
}
|
|
|
|
void GLFWView::activate() {
|
|
glfwMakeContextCurrent(window);
|
|
}
|
|
|
|
void GLFWView::deactivate() {
|
|
glfwMakeContextCurrent(nullptr);
|
|
}
|
|
|
|
void GLFWView::invalidate() {
|
|
dirty = true;
|
|
glfwPostEmptyEvent();
|
|
}
|
|
|
|
void GLFWView::report(float duration) {
|
|
frames++;
|
|
frameTime += duration;
|
|
|
|
const double currentTime = glfwGetTime();
|
|
if (currentTime - lastReported >= 1) {
|
|
frameTime /= frames;
|
|
mbgl::Log::Info(mbgl::Event::OpenGL, "Frame time: %6.2fms (%6.2f fps)", frameTime,
|
|
1000 / frameTime);
|
|
frames = 0;
|
|
frameTime = 0;
|
|
lastReported = currentTime;
|
|
}
|
|
}
|
|
|
|
void GLFWView::setChangeStyleCallback(std::function<void()> callback) {
|
|
changeStyleCallback = callback;
|
|
}
|
|
|
|
void GLFWView::setShouldClose() {
|
|
glfwSetWindowShouldClose(window, true);
|
|
glfwPostEmptyEvent();
|
|
}
|
|
|
|
void GLFWView::setWindowTitle(const std::string& title) {
|
|
glfwSetWindowTitle(window, (std::string { "Mapbox GL: " } + title).c_str());
|
|
}
|
|
|
|
void GLFWView::setMapChangeCallback(std::function<void(mbgl::MapChange)> callback) {
|
|
this->mapChangeCallback = callback;
|
|
}
|
|
|
|
void GLFWView::notifyMapChange(mbgl::MapChange change) {
|
|
if (mapChangeCallback) {
|
|
mapChangeCallback(change);
|
|
}
|
|
}
|
|
|
|
namespace mbgl {
|
|
namespace platform {
|
|
|
|
#ifndef GL_ES_VERSION_2_0
|
|
void showDebugImage(std::string name, const char *data, size_t width, size_t height) {
|
|
glfwInit();
|
|
|
|
static GLFWwindow *debugWindow = nullptr;
|
|
if (!debugWindow) {
|
|
debugWindow = glfwCreateWindow(width, height, name.c_str(), nullptr, nullptr);
|
|
if (!debugWindow) {
|
|
glfwTerminate();
|
|
fprintf(stderr, "Failed to initialize window\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
GLFWwindow *currentWindow = glfwGetCurrentContext();
|
|
|
|
glfwSetWindowSize(debugWindow, width, height);
|
|
glfwMakeContextCurrent(debugWindow);
|
|
|
|
int fbWidth, fbHeight;
|
|
glfwGetFramebufferSize(debugWindow, &fbWidth, &fbHeight);
|
|
float scale = static_cast<float>(fbWidth) / static_cast<float>(width);
|
|
|
|
{
|
|
gl::PreserveState<gl::value::PixelZoom> pixelZoom;
|
|
gl::PreserveState<gl::value::RasterPos> rasterPos;
|
|
|
|
MBGL_CHECK_ERROR(glPixelZoom(scale, -scale));
|
|
MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, 1.0f));
|
|
MBGL_CHECK_ERROR(glDrawPixels(width, height, GL_LUMINANCE, GL_UNSIGNED_BYTE, data));
|
|
}
|
|
|
|
glfwSwapBuffers(debugWindow);
|
|
|
|
glfwMakeContextCurrent(currentWindow);
|
|
}
|
|
|
|
void showColorDebugImage(std::string name, const char *data, size_t logicalWidth, size_t logicalHeight, size_t width, size_t height) {
|
|
glfwInit();
|
|
|
|
static GLFWwindow *debugWindow = nullptr;
|
|
if (!debugWindow) {
|
|
debugWindow = glfwCreateWindow(logicalWidth, logicalHeight, name.c_str(), nullptr, nullptr);
|
|
if (!debugWindow) {
|
|
glfwTerminate();
|
|
fprintf(stderr, "Failed to initialize window\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
GLFWwindow *currentWindow = glfwGetCurrentContext();
|
|
|
|
glfwSetWindowSize(debugWindow, logicalWidth, logicalHeight);
|
|
glfwMakeContextCurrent(debugWindow);
|
|
|
|
int fbWidth, fbHeight;
|
|
glfwGetFramebufferSize(debugWindow, &fbWidth, &fbHeight);
|
|
float xScale = static_cast<float>(fbWidth) / static_cast<float>(width);
|
|
float yScale = static_cast<float>(fbHeight) / static_cast<float>(height);
|
|
|
|
{
|
|
gl::PreserveState<gl::value::ClearColor> clearColor;
|
|
gl::PreserveState<gl::value::Blend> blend;
|
|
gl::PreserveState<gl::value::BlendFunc> blendFunc;
|
|
gl::PreserveState<gl::value::PixelZoom> pixelZoom;
|
|
gl::PreserveState<gl::value::RasterPos> rasterPos;
|
|
|
|
MBGL_CHECK_ERROR(glClearColor(0.8, 0.8, 0.8, 1));
|
|
MBGL_CHECK_ERROR(glClear(GL_COLOR_BUFFER_BIT));
|
|
MBGL_CHECK_ERROR(glEnable(GL_BLEND));
|
|
MBGL_CHECK_ERROR(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
|
|
MBGL_CHECK_ERROR(glPixelZoom(xScale, -yScale));
|
|
MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, 1.0f));
|
|
MBGL_CHECK_ERROR(glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, data));
|
|
}
|
|
|
|
glfwSwapBuffers(debugWindow);
|
|
|
|
glfwMakeContextCurrent(currentWindow);
|
|
}
|
|
#endif
|
|
|
|
} // namespace platform
|
|
} // namespace mbgl
|