From 513d2d9a7bb1d207bae5de8cdee177fc2bcb0844 Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Fri, 5 Nov 2021 17:18:14 +1100
Subject: [PATCH] Direct3D9Ex: Also enter reduced performance mode when
 minimised, and showe a message in chat when that happens

---
 src/Graphics_D3D11.c | 3 ++-
 src/Graphics_D3D9.c  | 9 +++++++--
 src/Graphics_GL1.c   | 1 -
 src/Graphics_GL2.c   | 1 -
 src/_GraphicsBase.h  | 7 ++++---
 5 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/Graphics_D3D11.c b/src/Graphics_D3D11.c
index f3c70c44d..88a60b19c 100644
--- a/src/Graphics_D3D11.c
+++ b/src/Graphics_D3D11.c
@@ -52,8 +52,9 @@ static void CreateDeviceAndSwapChain(void) {
 
 	DXGI_SWAP_CHAIN_DESC desc = { 0 };
 	desc.BufferCount = 1;
+	// todo see if BGRA slightly faster
 	desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-	desc.BufferDesc.RefreshRate.Numerator   = 60;
+	desc.BufferDesc.RefreshRate.Numerator   = 60; // TODO just leave at 0? check DXGI docs again
 	desc.BufferDesc.RefreshRate.Denominator = 1;
 	desc.BufferUsage  = DXGI_USAGE_RENDER_TARGET_OUTPUT;
 	desc.OutputWindow = WindowInfo.Handle;
diff --git a/src/Graphics_D3D9.c b/src/Graphics_D3D9.c
index 3770e0bd0..a96cf5c4c 100644
--- a/src/Graphics_D3D9.c
+++ b/src/Graphics_D3D9.c
@@ -814,8 +814,13 @@ void Gfx_EndFrame(void) {
 	IDirect3DDevice9_EndScene(device);
 	cc_result res = IDirect3DDevice9_Present(device, NULL, NULL, NULL, NULL);
 
-	/* Direct3D9Ex returns S_PRESENT_OCCLUDED when e.g. window is minimised */
-	if (res && res != S_PRESENT_OCCLUDED) {
+	/* Direct3D9Ex returns S_PRESENT_OCCLUDED when e.g.window is minimised */
+	if (res == S_PRESENT_OCCLUDED) {
+		TickReducedPerformance(); return;
+	}
+	EndReducedPerformance();
+
+	if (res) {
 		if (res != D3DERR_DEVICELOST) Logger_Abort2(res, "D3D9_EndFrame");
 		/* TODO: Make sure this actually works on all graphics cards. */
 		Gfx_LoseContext(" (Direct3D9 device lost)");
diff --git a/src/Graphics_GL1.c b/src/Graphics_GL1.c
index 670c83a7c..5bb7ba43b 100644
--- a/src/Graphics_GL1.c
+++ b/src/Graphics_GL1.c
@@ -1,7 +1,6 @@
 #include "Core.h"
 #if defined CC_BUILD_GL && !defined CC_BUILD_GLMODERN
 #include "_GraphicsBase.h"
-#include "Chat.h"
 #include "Errors.h"
 #include "Logger.h"
 #include "Window.h"
diff --git a/src/Graphics_GL2.c b/src/Graphics_GL2.c
index 3ff64947b..a93f079e2 100644
--- a/src/Graphics_GL2.c
+++ b/src/Graphics_GL2.c
@@ -1,7 +1,6 @@
 #include "Core.h"
 #if defined CC_BUILD_GL && defined CC_BUILD_GLMODERN
 #include "_GraphicsBase.h"
-#include "Chat.h"
 #include "Errors.h"
 #include "Logger.h"
 #include "Window.h"
diff --git a/src/_GraphicsBase.h b/src/_GraphicsBase.h
index 524665387..cbaac6b7c 100644
--- a/src/_GraphicsBase.h
+++ b/src/_GraphicsBase.h
@@ -8,6 +8,7 @@
 #include "Block.h"
 #include "Options.h"
 #include "Bitmap.h"
+#include "Chat.h"
 
 struct _GfxData Gfx;
 GfxResourceID Gfx_defaultIb;
@@ -96,14 +97,14 @@ static void TickReducedPerformance(void) {
 	Thread_Sleep(100); /* 10 FPS */
 
 	if (reducedPerformance) return;
-	reducedPerformance = true; /* TODO: also log a message in-game? */
-	Platform_LogConst("Entering reduced performance mode");
+	reducedPerformance = true;
+	Chat_AddRaw("&eEntering reduced performance mode (game minimised or hidden)");
 }
 
 static void EndReducedPerformance(void) {
 	if (!reducedPerformance) return;
 	reducedPerformance = false;
-	Platform_LogConst("Exited reduced performance mode");
+	Chat_AddRaw("&eExited reduced performance mode");
 }