19-oit: switched to imgui (#1172)

examples/19-oit/oit.cpp

@@ -211,7 +211,6 @@ class ExampleOIT : public entry::AppI
 		m_fbh.idx = bgfx::kInvalidHandle;
 
 		m_mode = 1;
-		m_scrollArea = 0;
 		m_frontToBack = true;
 		m_fadeInOut   = false;
 
@@ -279,30 +278,28 @@ class ExampleOIT : public entry::AppI
 				, uint16_t(m_height)
 				);
 
-			imguiBeginScrollArea("Settings", m_width - m_width / 4 - 10, 10, m_width / 4, m_height / 3, &m_scrollArea);
-			imguiSeparatorLine();
+			ImGui::SetNextWindowPos(ImVec2((float)m_width - (float)m_width / 4.0f - 10.0f, 10.0f) );
+			ImGui::SetNextWindowSize(ImVec2((float)m_width / 4.0f, (float)m_height / 3.0f) );
+			ImGui::Begin("Settings"
+						 , NULL
+						 , ImVec2((float)m_width / 4.0f, (float)m_height / 3.0f)
+						 , ImGuiWindowFlags_AlwaysAutoResize
+						 );
+			
+			ImGui::Separator();
 
-			imguiLabel("Blend mode:");
+			ImGui::Text("Blend mode:");
 
-			m_mode = imguiChoose(m_mode
-				, "None"
-				, "Separate"
-				, "MRT Independent"
-				);
-
-			imguiSeparatorLine();
+			ImGui::RadioButton("None", &m_mode, 0);
+			ImGui::RadioButton("Separate", &m_mode, 1);
+			ImGui::RadioButton("MRT Independent", &m_mode, 2);
 
-			if (imguiCheck("Front to back", m_frontToBack) )
-			{
-				m_frontToBack ^= true;
-			}
-
-			if (imguiCheck("Fade in/out", m_fadeInOut) )
-			{
-				m_fadeInOut ^= true;
-			}
+			ImGui::Separator();
+			
+			ImGui::Checkbox("Front to back", &m_frontToBack);
+			ImGui::Checkbox("Fade in/out", &m_fadeInOut);
 
-			imguiEndScrollArea();
+			ImGui::End();
 			imguiEndFrame();
 
 			// Set view 0 default viewport.
@@ -492,8 +489,7 @@ class ExampleOIT : public entry::AppI
 	uint32_t m_debug;
 	uint32_t m_reset;
 
-	uint32_t m_mode;
-	int32_t  m_scrollArea;
+	int32_t m_mode;
 	bool m_frontToBack;
 	bool m_fadeInOut;