Texture for ImGui

[wecand0]

I want to get texture from framebuffer and to render this texture like this https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples#example-for-opengl-users
Is it possible to get it? The platform: linux+glfw

As I can understand in platform/glfw/glfw_gl_backend.cpp there is GLFWGLRenderableResource, in this class we can get context where there is method getContext(), am I in the right way?

[louwers]

Hi @wecand0 did you manage to figure it out?

[wecand0]

still not, I reckon that I need this ID from here

maplibre-native/src/mbgl/gl/texture2d.cpp

Line 116 in 9cfb695

platform::GLuint Texture2D::getTextureID() const noexcept {

It it right approach?
PS I know we had conversation before, I wrote additional SDK for developing for Linux+glfw(implemented drawing any geojson(circles with radius, hexagons and etc), if it is fruitful for project - a bit later I can share my source code.

May be it would be very great to integrate ImGui in maplibre-native as it is made for thousands projects for debugging+custom interface.
I found this project with ImGui + maps -> https://github.com/tangrams/tangram-es/tree/main/platforms/common but it is a bit rip

[louwers]

You can use a CustomLayer if you want to have low level access into the rendering loop of MapLibre Native and draw stuff with OpenGL yourself. Here is an example:

maplibre-native/test/api/custom_layer.test.cpp

Line 39 in 10955fb

class TestLayer : public mbgl::style::CustomLayerHost {