Function FlushDebug

engine/render/src/render/debug_renderer.cpp:242–297

    }

    void FlushDebug(HRenderContext render_context, uint32_t render_order)
    {
        if (!render_context->m_DebugRenderer.m_RenderContext)
            return;
        DebugRenderer& debug_renderer = render_context->m_DebugRenderer;
        uint32_t total_vertex_count = 0;
        uint32_t total_render_objects = 0;
        dmGraphics::SetVertexBufferData(debug_renderer.m_VertexBuffer, 0, 0, dmGraphics::BUFFER_USAGE_STREAM_DRAW);
        for (uint32_t i = 0; i < MAX_DEBUG_RENDER_TYPE_COUNT; ++i)
        {
            DebugRenderTypeData& type_data = debug_renderer.m_TypeData[i];
            RenderObject& ro = type_data.m_RenderObject;
            uint32_t vertex_count = ro.m_VertexCount;
            if (vertex_count > 0)
            {
                ro.m_VertexStart = total_vertex_count;
                total_vertex_count += vertex_count;
                total_render_objects++;
            }
        }

        dmGraphics::SetVertexBufferData(debug_renderer.m_VertexBuffer, total_vertex_count * sizeof(DebugVertex), 0, dmGraphics::BUFFER_USAGE_STREAM_DRAW);

        dmRender::RenderListEntry* render_list = dmRender::RenderListAlloc(render_context, total_render_objects);
        dmRender::HRenderListDispatch dispatch = dmRender::RenderListMakeDispatch(render_context, &DebugRenderListDispatch, &debug_renderer);
        dmRender::RenderListEntry* write_ptr = render_list;

        // Upgrade the batch key, since we might submit these render object multiple times
        // during a frame (because render scripts might draw lines, and then we are forced to flush
        // debug rendering during command queue execution, and thus submit the same objects again).
        //
        // TODO: Rewrite this so we can flush only what has been added since last time.
        //
        debug_renderer.m_RenderBatchVersion++;

        for (uint32_t i = 0; i < MAX_DEBUG_RENDER_TYPE_COUNT; ++i)
        {
            DebugRenderTypeData& type_data = debug_renderer.m_TypeData[i];
            RenderObject& ro = type_data.m_RenderObject;
            uint32_t vertex_count = ro.m_VertexCount;
            if (vertex_count > 0)
            {
                dmGraphics::SetVertexBufferSubData(debug_renderer.m_VertexBuffer, ro.m_VertexStart * sizeof(DebugVertex), vertex_count * sizeof(DebugVertex), type_data.m_ClientBuffer);
                write_ptr->m_MinorOrder = 0;
                write_ptr->m_MajorOrder = RENDER_ORDER_AFTER_WORLD;
                write_ptr->m_Order = render_order;
                write_ptr->m_UserData = (uintptr_t) &ro;
                write_ptr->m_BatchKey = debug_renderer.m_RenderBatchVersion;
                write_ptr->m_TagListKey = dmRender::GetMaterialTagListKey(ro.m_Material);
                write_ptr->m_Dispatch = dispatch;
                write_ptr++;
            }
        }

        dmRender::RenderListSubmit(render_context, render_list, write_ptr);
    }
}