bgfx with nuklear ui

[VladSerhiienko]

Currently, I'm learning bgfx and trying to integrate nuklear gui library into my project.
In nk_sdl_device_create function I initialize nuklear and create bgfx resources (vertex declation, buffers and font atlas texture).
The file where I'm rendering mesh generated by nuklear is here
https://github.com/VladSerhiienko/FbxPipeline/blob/master/FbxPipeline/FbxViewer/NuklearSdlBgfx.cpp in nk_sdl_render function.
I made the shader very trivial gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); and I expect to see some red rects. I see none. I printed debug stats and checked via renderdoc, the problem is there were no draw calls made.

I need help on this issue, I'm sure there is smth very trivial I'm missing in the code, here is what i do in nk_sdl_render :

bgfx::setViewRect( 0, 0, 0, display_width, display_height );
bgfx::setState( BGFX_STATE_RGB_WRITE | BGFX_STATE_ALPHA_WRITE | BGFX_STATE_BLEND_EQUATION_ADD |
                    BGFX_STATE_BLEND_FUNC( BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA ) );

....

// I checked if the vertices and indices are ok, they are ok
bgfx::updateDynamicVertexBuffer(dev->vertexBufferHandle, 0, fbxv::bgfxUtils::makeReleasableRef( sdl.ogl.vertexBuffer.memory.ptr, sdl.ogl.vertexBuffer.allocated ) );
bgfx::updateDynamicIndexBuffer(dev->elementBufferHandle, 0, fbxv::bgfxUtils::makeReleasableRef( sdl.ogl.elementBuffer.memory.ptr, sdl.ogl.elementBuffer.allocated ) );

...

// Then in the loop for each command I do:
        bgfx::setScissor( ( GLint )( cmd->clip_rect.x * scale.x ),
                          ( GLint )( ( height - ( GLint )( cmd->clip_rect.y + cmd->clip_rect.h ) ) * scale.y ),
                          ( GLint )( cmd->clip_rect.w * scale.x ),
                          ( GLint )( cmd->clip_rect.h * scale.y ) );

        auto &textureHandle = *(bgfx::TextureHandle *) cmd->texture.ptr;
        bgfx::setTexture( 0, dev->textureUniformHandle, textureHandle );

        bgfx::setViewTransform( 0, view, ortho );
        bgfx::setVertexBuffer( dev->vertexBufferHandle );
        bgfx::setIndexBuffer( dev->elementBufferHandle, offset, cmd->elem_count );
        drawcallCount += bgfx::submit( 0, dev->textureProgramHandle );

        offset += cmd->elem_count;

I took the code from the nuklear sdl3 demo here https://github.com/vurtun/nuklear/blob/master/demo/sdl_opengl3/nuklear_sdl_gl3.h

[VladSerhiienko]

Solved, my bad :\

[htmlboss]

Any chance you would share your fix?