Examples: DirectX10/11/12, Allegro, Marmalade: Render functions early out when display size is zero (minimized). (#2496)
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index b9c4482..937583c 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -61,6 +61,7 @@
- Examples: Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.
- Examples: Vulkan: Added ImGui_ImplVulkan_SetMinImageCount() to change min image count at runtime. (#2071) [@nathanvoglsam]
- Examples: DirectX9: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects(). (#2454)
+- Examples: DirectX10/11/12, Allegro, Marmalade: Render functions early out when display size is zero (minimized). (#2496)
- Examples: GLUT: Fixed existing FreeGLUT example to work with regular GLUT. (#2465) [@andrewwillmott]
- Examples: GLUT: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h. (#2465) [@andrewwillmott]
- Examples: GLUT: Made io.DeltaTime always > 0. (#2430)
diff --git a/examples/imgui_impl_allegro5.cpp b/examples/imgui_impl_allegro5.cpp
index 3b589c3..ca0444f 100644
--- a/examples/imgui_impl_allegro5.cpp
+++ b/examples/imgui_impl_allegro5.cpp
@@ -64,6 +64,10 @@
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
{
+ // Avoid rendering when minimized
+ if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+ return;
+
// Backup Allegro state that will be modified
ALLEGRO_TRANSFORM last_transform = *al_get_current_transform();
ALLEGRO_TRANSFORM last_projection_transform = *al_get_current_projection_transform();
diff --git a/examples/imgui_impl_dx10.cpp b/examples/imgui_impl_dx10.cpp
index ac39434..7bb5885 100644
--- a/examples/imgui_impl_dx10.cpp
+++ b/examples/imgui_impl_dx10.cpp
@@ -59,6 +59,10 @@
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
{
+ // Avoid rendering when minimized
+ if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+ return;
+
ID3D10Device* ctx = g_pd3dDevice;
// Create and grow vertex/index buffers if needed
diff --git a/examples/imgui_impl_dx11.cpp b/examples/imgui_impl_dx11.cpp
index 060d86c..e8d022f 100644
--- a/examples/imgui_impl_dx11.cpp
+++ b/examples/imgui_impl_dx11.cpp
@@ -59,6 +59,10 @@
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
{
+ // Avoid rendering when minimized
+ if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+ return;
+
ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
// Create and grow vertex/index buffers if needed
diff --git a/examples/imgui_impl_dx12.cpp b/examples/imgui_impl_dx12.cpp
index 04fe7fd..45fb4c7 100644
--- a/examples/imgui_impl_dx12.cpp
+++ b/examples/imgui_impl_dx12.cpp
@@ -62,6 +62,10 @@
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
{
+ // Avoid rendering when minimized
+ if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+ return;
+
// FIXME: I'm assuming that this only gets called once per frame!
// If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
g_frameIndex = g_frameIndex + 1;
diff --git a/examples/imgui_impl_marmalade.cpp b/examples/imgui_impl_marmalade.cpp
index f1eaa99..1f2307b 100644
--- a/examples/imgui_impl_marmalade.cpp
+++ b/examples/imgui_impl_marmalade.cpp
@@ -40,6 +40,10 @@
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_Marmalade_RenderDrawData(ImDrawData* draw_data)
{
+ // Avoid rendering when minimized
+ if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+ return;
+
// Render command lists
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
