From 9fec876e3240ac3503db748e0f7d9094e86a5602 Mon Sep 17 00:00:00 2001
From: Jonas Kulla <Nyocurio@gmail.com>
Date: Sun, 23 Apr 2017 12:28:34 +0200
Subject: [PATCH] Config: Add "maxTextureSize" entry to artificially limit
 texture sizes

---
 mkxp.conf.sample    | 11 +++++++++++
 src/config.cpp      |  1 +
 src/config.h        |  1 +
 src/glstate.cpp     |  6 +++++-
 src/glstate.h       |  4 +++-
 src/sharedstate.cpp |  1 +
 6 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/mkxp.conf.sample b/mkxp.conf.sample
index b88f216..0062451 100644
--- a/mkxp.conf.sample
+++ b/mkxp.conf.sample
@@ -124,6 +124,17 @@
 # subImageFix=false
 
 
+# Limit the maximum size (width, height) of
+# most textures mkxp will create (exceptions are
+# rendering backbuffers and similar).
+# If set to 0, the hardware maximum is used.
+# This is useful for recording traces that can
+# be played back on machines with lower specs.
+# (default: 0)
+#
+# maxTextureSize=0
+
+
 # Set the base path of the game to '/path/to/game'
 # (default: executable directory)
 #
diff --git a/src/config.cpp b/src/config.cpp
index a58ddab..0fab180 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -166,6 +166,7 @@ void Config::read(int argc, char *argv[])
 	PO_DESC(syncToRefreshrate, bool, false) \
 	PO_DESC(solidFonts, bool, false) \
 	PO_DESC(subImageFix, bool, false) \
+	PO_DESC(maxTextureSize, int, 0) \
 	PO_DESC(gameFolder, std::string, ".") \
 	PO_DESC(anyAltToggleFS, bool, false) \
 	PO_DESC(enableReset, bool, true) \
diff --git a/src/config.h b/src/config.h
index d82698d..f6dc2c4 100644
--- a/src/config.h
+++ b/src/config.h
@@ -49,6 +49,7 @@ struct Config
 	bool solidFonts;
 
 	bool subImageFix;
+	int maxTextureSize;
 
 	std::string gameFolder;
 	bool anyAltToggleFS;
diff --git a/src/glstate.cpp b/src/glstate.cpp
index 73aec31..ff88de7 100644
--- a/src/glstate.cpp
+++ b/src/glstate.cpp
@@ -23,6 +23,7 @@
 #include "shader.h"
 #include "etc.h"
 #include "gl-fun.h"
+#include "config.h"
 
 #include <SDL_rect.h>
 
@@ -111,7 +112,7 @@ GLState::Caps::Caps()
 	gl.GetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
 }
 
-GLState::GLState()
+GLState::GLState(const Config &conf)
 {
 	gl.Disable(GL_DEPTH_TEST);
 
@@ -121,4 +122,7 @@ GLState::GLState()
 	scissorTest.init(false);
 	scissorBox.init(IntRect(0, 0, 640, 480));
 	program.init(0);
+
+	if (conf.maxTextureSize > 0)
+		caps.maxTexSize = conf.maxTextureSize;
 }
diff --git a/src/glstate.h b/src/glstate.h
index 63b0bcb..02830e6 100644
--- a/src/glstate.h
+++ b/src/glstate.h
@@ -27,6 +27,8 @@
 #include <stack>
 #include <assert.h>
 
+struct Config;
+
 template<typename T>
 struct GLProperty
 {
@@ -130,7 +132,7 @@ public:
 
 	} caps;
 
-	GLState();
+	GLState(const Config &conf);
 };
 
 #endif // GLSTATE_H
diff --git a/src/sharedstate.cpp b/src/sharedstate.cpp
index 9872af7..0778da9 100644
--- a/src/sharedstate.cpp
+++ b/src/sharedstate.cpp
@@ -109,6 +109,7 @@ struct SharedStatePrivate
 	      graphics(threadData),
 	      input(*threadData),
 	      audio(*threadData),
+	      _glState(threadData->config),
 	      fontState(threadData->config),
 	      stampCounter(0)
 	{