Merge remote-tracking branch 'origin/master' into Rendering

# Conflicts:
#	include/Engine/Rendering/RenderQueueFactory.h

src/Engine/Rendering/ImGuiRenderPass.cpp

@@ -0,0 +1,342 @@
+#include "Rendering/ImGuiRenderPass.h"
+
+ImGuiRenderPass::ImGuiRenderPass(IRenderer* renderer, EventBroker* eventBroker)
+    : m_Renderer(renderer)
+    , m_EventBroker(eventBroker)
+{
+    g_Window = renderer->Window();
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;                         // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+
+    ImGuiStyle& style = ImGui::GetStyle();
+    style.Alpha = 1.f;
+    style.WindowPadding = ImVec2(8.f, 7.f);
+    style.WindowRounding = 4.f;
+    style.ChildWindowRounding = 0.f;
+    style.FramePadding = ImVec2(4.f, 2.f);
+    style.FrameRounding = 2.f;
+    style.ItemSpacing = ImVec2(6.f, 2.f);
+    style.ItemInnerSpacing = ImVec2(3.f, 4.f);
+    style.IndentSpacing = 16.f;
+    style.ScrollbarSize = 12;
+    style.ScrollbarRounding = 2.f;
+    style.GrabMinSize = 13.f;
+    style.GrabRounding = 3.f;
+
+    createDeviceObjects();
+    
+    EVENT_SUBSCRIBE_MEMBER(m_EMousePress, &ImGuiRenderPass::OnMousePress);
+    EVENT_SUBSCRIBE_MEMBER(m_EMouseRelease, &ImGuiRenderPass::OnMouseRelease);
+    EVENT_SUBSCRIBE_MEMBER(m_EMouseMove, &ImGuiRenderPass::OnMouseMove);
+    EVENT_SUBSCRIBE_MEMBER(m_EMouseScroll, &ImGuiRenderPass::OnMouseScroll);
+    EVENT_SUBSCRIBE_MEMBER(m_EKeyDown, &ImGuiRenderPass::OnKeyDown);
+    EVENT_SUBSCRIBE_MEMBER(m_EKeyUp, &ImGuiRenderPass::OnKeyUp);
+    EVENT_SUBSCRIBE_MEMBER(m_EKeyboardChar, &ImGuiRenderPass::OnKeyboardChar);
+
+    // Prime the first frame
+    newFrame();
+}
+
+void ImGuiRenderPass::Update(double dt)
+{
+    g_DeltaTime = dt;
+}
+
+void ImGuiRenderPass::Draw()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    ImGui::Render();
+
+    ImDrawData* draw_data = ImGui::GetDrawData();
+
+    // Backup GL state
+    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
+    GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+    GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
+    GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
+    GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
+    GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
+    GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
+    GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
+    GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
+
+    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
+    glEnable(GL_BLEND);
+    glBlendEquation(GL_FUNC_ADD);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_SCISSOR_TEST);
+    glActiveTexture(GL_TEXTURE0);
+
+    // Handle cases of screen coordinates != from framebuffer coordinates (e.g. retina displays)
+    float fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
+
+    // Setup viewport, orthographic projection matrix
+    glViewport(0, 0, (GLsizei)io.DisplaySize.x, (GLsizei)io.DisplaySize.y);
+    const float ortho_projection[4][4] =
+    {
+        { 2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f },
+        { 0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
+        { 0.0f, 0.0f, -1.0f, 0.0f },
+        { -1.0f, 1.0f, 0.0f, 1.0f },
+    };
+    glUseProgram(g_ShaderHandle);
+    glUniform1i(g_AttribLocationTex, 0);
+    glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
+    glBindVertexArray(g_VaoHandle);
+
+    for (int n = 0; n < draw_data->CmdListsCount; n++) {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawIdx* idx_buffer_offset = 0;
+
+        glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+        glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.size() * sizeof(ImDrawVert), (GLvoid*)&cmd_list->VtxBuffer.front(), GL_STREAM_DRAW);
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx), (GLvoid*)&cmd_list->IdxBuffer.front(), GL_STREAM_DRAW);
+
+        for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++) {
+            if (pcmd->UserCallback) {
+                pcmd->UserCallback(cmd_list, pcmd);
+            } else {
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
+                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
+            }
+            idx_buffer_offset += pcmd->ElemCount;
+        }
+    }
+
+    // Restore modified GL state
+    glUseProgram(last_program);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+    glBindVertexArray(last_vertex_array);
+    glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+    glBlendFunc(last_blend_src, last_blend_dst);
+    if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
+    if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
+    if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
+    if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
+
+    // Start next frame
+    newFrame();
+}
+
+bool ImGuiRenderPass::OnMousePress(const Events::MousePress& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MouseDown[e.Button] = true;
+    return false;
+}
+
+bool ImGuiRenderPass::OnMouseRelease(const Events::MouseRelease& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MouseDown[e.Button] = false;
+    return false;
+}
+
+bool ImGuiRenderPass::OnMouseMove(const Events::MouseMove& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MousePos.x = e.X;
+    io.MousePos.y = e.Y;
+    return true;
+}
+
+bool ImGuiRenderPass::OnMouseScroll(const Events::MouseScroll& e)
+{
+    g_MouseWheel += (float)e.DeltaY;
+    return true;
+}
+
+bool ImGuiRenderPass::OnKeyDown(const Events::KeyDown& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeysDown[e.KeyCode] = true;
+    return true;
+}
+
+bool ImGuiRenderPass::OnKeyUp(const Events::KeyUp& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeysDown[e.KeyCode] = false;
+    return true;
+}
+
+bool ImGuiRenderPass::OnKeyboardChar(const Events::KeyboardChar& e)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if (e.Char > 0 && e.Char < 0x10000) {
+        io.AddInputCharacter((unsigned short)e.Char);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool ImGuiRenderPass::createDeviceObjects()
+{
+    // Backup GL state
+    GLint last_texture, last_array_buffer, last_vertex_array;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+
+    const GLchar *vertex_shader =
+        "#version 330\n"
+        "uniform mat4 ProjMtx;\n"
+        "in vec2 Position;\n"
+        "in vec2 UV;\n"
+        "in vec4 Color;\n"
+        "out vec2 Frag_UV;\n"
+        "out vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "	Frag_UV = UV;\n"
+        "	Frag_Color = Color;\n"
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* fragment_shader =
+        "#version 330\n"
+        "uniform sampler2D Texture;\n"
+        "in vec2 Frag_UV;\n"
+        "in vec4 Frag_Color;\n"
+        "out vec4 Out_Color;\n"
+        "void main()\n"
+        "{\n"
+        "	Out_Color = Frag_Color * texture( Texture, Frag_UV.st);\n"
+        "}\n";
+
+    g_ShaderHandle = glCreateProgram();
+    g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
+    g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
+    glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
+    glCompileShader(g_VertHandle);
+    glCompileShader(g_FragHandle);
+    glAttachShader(g_ShaderHandle, g_VertHandle);
+    glAttachShader(g_ShaderHandle, g_FragHandle);
+    glLinkProgram(g_ShaderHandle);
+
+    g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
+    g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
+    g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position");
+    g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV");
+    g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
+
+    glGenBuffers(1, &g_VboHandle);
+    glGenBuffers(1, &g_ElementsHandle);
+
+    glGenVertexArrays(1, &g_VaoHandle);
+    glBindVertexArray(g_VaoHandle);
+    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+    glEnableVertexAttribArray(g_AttribLocationPosition);
+    glEnableVertexAttribArray(g_AttribLocationUV);
+    glEnableVertexAttribArray(g_AttribLocationColor);
+
+#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
+    glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos));
+    glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
+    glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
+#undef OFFSETOF
+
+    createFontsTexture();
+
+    // Restore modified GL state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindVertexArray(last_vertex_array);
+
+    return true;
+}
+
+bool ImGuiRenderPass::createFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+
+    io.Fonts->AddFontFromFileTTF("Fonts/DroidSans.ttf", 13.f);
+    //io.Fonts->AddFontFromFileTTF("Fonts/ProggyClean.ttf", 13.f);
+    //io.Fonts->AddFontFromFileTTF("Fonts/ProggyTiny.ttf", 10.f);
+    //io.Fonts->AddFontFromFileTTF("Fonts/Karla-Regular.ttf", 15.0f);
+
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
+
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGenTextures(1, &g_FontTexture);
+    glBindTexture(GL_TEXTURE_2D, g_FontTexture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
+
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+
+    return true;
+}
+
+void ImGuiRenderPass::newFrame()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    int display_w, display_h;
+    glfwGetWindowSize(g_Window, &w, &h);
+    glfwGetFramebufferSize(g_Window, &display_w, &display_h);
+    io.DisplaySize = ImVec2((float)w, (float)h);
+    io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
+
+    io.DeltaTime = g_DeltaTime;
+
+    io.KeyCtrl = glfwGetKey(g_Window, GLFW_KEY_LEFT_CONTROL) || glfwGetKey(g_Window, GLFW_KEY_RIGHT_CONTROL);
+    io.KeyShift = glfwGetKey(g_Window, GLFW_KEY_LEFT_SHIFT) || glfwGetKey(g_Window, GLFW_KEY_RIGHT_SHIFT);
+    io.KeyAlt = glfwGetKey(g_Window, GLFW_KEY_LEFT_ALT) || glfwGetKey(g_Window, GLFW_KEY_RIGHT_ALT);
+
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0;
+
+    m_EventBroker->Process<ImGuiRenderPass>();
+
+    ImGui::NewFrame();
+}
+

src/Engine/Rendering/PickingPass.cpp

@@ -93,12 +93,15 @@ void PickingPass::Draw(RenderQueueCollection& rq)
     GLERROR("PickingPass Error");
 
     //Publish pick event every frame with the pick data that can be picked by the event
+    int fbWidth;
+    int fbHeight;
+    glfwGetFramebufferSize(m_Renderer->Window(), &fbWidth, &fbHeight);
     Events::Picking pickEvent = Events::Picking(
         &m_PickingBuffer,
         &m_DepthBuffer,
         m_Renderer->Camera()->ProjectionMatrix(),
         m_Renderer->Camera()->ViewMatrix(),
-        m_Renderer->Resolution(),
+        Rectangle(fbWidth, fbHeight),
         &m_PickingColorsToEntity);
 
     m_EventBroker->Publish(pickEvent);

src/Engine/Rendering/RawModel.cpp

@@ -8,7 +8,7 @@ RawModel::RawModel(std::string fileName)
 	if (scene == nullptr) {
 		LOG_ERROR("Failed to load model \"%s\"", fileName.c_str());
 		LOG_ERROR("Assimp error: %s", importer.GetErrorString());
-		return;
+        throw std::runtime_error("Failed to open model file.");
 	}
 
 	auto m = scene->mRootNode->mTransformation;

src/Engine/Rendering/RenderQueueFactory.cpp

@@ -24,15 +24,19 @@ glm::mat4 RenderQueueFactory::ModelMatrix(World* world, EntityID entity)
     return modelMatrix;
 }
 
-
 glm::vec3 RenderQueueFactory::AbsolutePosition(World* world, EntityID entity)
 {
     glm::vec3 position;
 
     do {
         ComponentWrapper transform = world->GetComponent(entity, "Transform");
-        position += (glm::vec3)transform["Position"];
-        entity = world->GetParent(entity);
+        EntityID parent = world->GetParent(entity);
+        if (parent != 0) {
+            position += AbsoluteOrientation(world, parent) * (glm::vec3)transform["Position"];
+        } else {
+            position += (glm::vec3)transform["Position"];
+        }
+        entity = parent;
     } while (entity != 0);
    
     return position;
@@ -53,15 +57,15 @@ glm::quat RenderQueueFactory::AbsoluteOrientation(World* world, EntityID entity)
 
 glm::vec3 RenderQueueFactory::AbsoluteScale(World* world, EntityID entity)
 {
-    ComponentWrapper transform = world->GetComponent(entity, "Transform");
-    glm::vec3 scale = (glm::vec3)transform["Scale"];
+    glm::vec3 scale(1.f);
 
-    EntityID parent = world->GetParent(entity);
-    if (parent != 0) {
-        return AbsoluteScale(world, parent) * scale;
-    } else {
-        return scale;
-    }
+    do {
+        ComponentWrapper transform = world->GetComponent(entity, "Transform");
+        scale *= (glm::vec3)transform["Scale"];
+        entity = world->GetParent(entity);
+    } while (entity != 0);
+
+    return scale;
 }
 
 void RenderQueueFactory::FillModels(World* world, RenderQueue* renderQueue)
@@ -72,12 +76,19 @@ void RenderQueueFactory::FillModels(World* world, RenderQueue* renderQueue)
     }
 
     for (auto& modelC : *models) {
+        bool visible = modelC["Visible"];
+        if (!visible) {
+            continue;
+        }
         std::string resource = modelC["Resource"];
         if (resource.empty()) {
             continue;
         }
         glm::vec4 color = modelC["Color"];
         Model* model = ResourceManager::Load<Model>(resource);
+        if (model == nullptr) {
+            model = ResourceManager::Load<Model>("Models/Core/Error.obj");
+        }
 
         for (auto texGroup : model->TextureGroups) {
 

src/Engine/Rendering/RenderState.cpp

@@ -9,7 +9,6 @@ bool RenderState::Enable(GLenum GLEnable)
 {
     if(glIsEnabled(GLEnable))
     {
-        LOG_WARNING("Trying to enable somthing that is already enabled.");
         return false;
     }
     m_Enables.push_back(GLEnable);

src/Engine/Rendering/Renderer.cpp

@@ -23,6 +23,8 @@ void Renderer::Initialize()
     m_ScreenQuad = ResourceManager::Load<Model>("Models/Core/ScreenQuad.obj");
     m_UnitQuad = ResourceManager::Load<Model>("Models/Core/UnitQuad.obj");
     m_UnitSphere = ResourceManager::Load<Model>("Models/Core/UnitSphere.obj");
+
+    m_ImGuiRenderPass = new ImGuiRenderPass(this, m_EventBroker);
 }
 
 void Renderer::InitializeWindow()
@@ -98,6 +100,7 @@ void Renderer::Update(double dt)
 {
     m_EventBroker->Process<Renderer>();
     InputUpdate(dt);
+    m_ImGuiRenderPass->Update(dt);
 }
 
 void Renderer::Draw(RenderQueueCollection& rq)
@@ -106,8 +109,13 @@ void Renderer::Draw(RenderQueueCollection& rq)
     //DrawScreenQuad(m_PickingPass->PickingTexture());
     //CullLights();
     
+    glClearColor(255.f / 255, 163.f / 255, 176.f / 255, 1.f);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
     m_DrawScenePass->Draw(rq);
     GLERROR("Renderer::Draw m_DrawScenePass->Draw");
+    m_ImGuiRenderPass->Draw();
 	glfwSwapBuffers(m_Window);
 }
 

src/Engine/Rendering/Util/ScreenCoords.cpp

@@ -32,11 +32,10 @@ glm::vec3 ScreenCoords::ToWorldPos(glm::vec2 screenCoord, float depth, float scr
 ScreenCoords::PixelData ScreenCoords::ToPixelData(float x, float y, FrameBuffer* PickDataBuffer, GLuint DepthBuffer)
 {
     PickDataBuffer->Bind();
-    unsigned char pdata[2];
-    glReadPixels(x, y, 1, 1, GL_RG, GL_UNSIGNED_BYTE, &pdata);
+    unsigned char pdata[3];
+    glReadPixels(x, y, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pdata);
     PickDataBuffer->Unbind();
 
-
     glBindFramebuffer(GL_FRAMEBUFFER, DepthBuffer);
     float depthData;
     glReadPixels(x, y, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &depthData);