Examples: OpenGL3: Fix BindVertexArray/BindBuffer order (#527)

examples/opengl3_example/imgui_impl_glfw_gl3.cpp

@@ -108,9 +108,9 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data)
     // Restore modified GL state
     glUseProgram(last_program);
     glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindVertexArray(last_vertex_array);
     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);

examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp

@@ -103,9 +103,9 @@ void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data)
 	// Restore modified GL state
 	glUseProgram(last_program);
 	glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindVertexArray(last_vertex_array);
 	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);