From 98b9acf0d3879d9a49f82ff4ff22886033ddcdce Mon Sep 17 00:00:00 2001
From: arnastia <arnastia@gmail.com>
Date: Tue, 25 Jun 2013 19:14:10 +0100
Subject: [PATCH] Add FramebuffersToMem option to allow disabling of reading
 framebuffer contents to memory (defaults to false).

---
 Core/Config.cpp          |  2 ++
 Core/Config.h            |  1 +
 GPU/GLES/Framebuffer.cpp | 60 +++++++++++++++++++++-------------------
 3 files changed, 34 insertions(+), 29 deletions(-)

diff --git a/Core/Config.cpp b/Core/Config.cpp
index 146f20e29fb4..f004f5b604eb 100644
--- a/Core/Config.cpp
+++ b/Core/Config.cpp
@@ -114,6 +114,7 @@ void Config::Load(const char *iniFileName)
 #endif
 	graphics->Get("StretchToDisplay", &bStretchToDisplay, false);
 	graphics->Get("TrueColor", &bTrueColor, true);
+	graphics->Get("FramebuffersToMem", &bFramebuffersToMem, false);
 	graphics->Get("MipMap", &bMipMap, true);
 	graphics->Get("TexScalingLevel", &iTexScalingLevel, 1);
 	graphics->Get("TexScalingType", &iTexScalingType, 0);
@@ -216,6 +217,7 @@ void Config::Save()
 #endif
 		graphics->Set("StretchToDisplay", bStretchToDisplay);
 		graphics->Set("TrueColor", bTrueColor);
+		graphics->Set("FramebuffersToMem", bFramebuffersToMem);
 		graphics->Set("MipMap", bMipMap);
 		graphics->Set("TexScalingLevel", iTexScalingLevel);
 		graphics->Set("TexScalingType", iTexScalingType);
diff --git a/Core/Config.h b/Core/Config.h
index 9881c582bcb3..251d4229a366 100644
--- a/Core/Config.h
+++ b/Core/Config.h
@@ -79,6 +79,7 @@ struct Config
 	bool bFullScreen;
 	int iAnisotropyLevel;
 	bool bTrueColor;
+	bool bFramebuffersToMem;
 	bool bMipMap;
 	int iTexScalingLevel; // 1 = off, 2 = 2x, ..., 5 = 5x
 	int iTexScalingType; // 0 = xBRZ, 1 = Hybrid
diff --git a/GPU/GLES/Framebuffer.cpp b/GPU/GLES/Framebuffer.cpp
index 9ee84bc33a3d..d936f20204be 100644
--- a/GPU/GLES/Framebuffer.cpp
+++ b/GPU/GLES/Framebuffer.cpp
@@ -408,8 +408,9 @@ void FramebufferManager::SetRenderFrameBuffer() {
 
 	// Save current render framebuffer to memory
 	if(currentRenderVfb_) {
-		// TODO: Add a way to disable the call since it is rather expensive.
-		ReadFramebufferToMemory(currentRenderVfb_);
+		if(g_Config.bFramebuffersToMem) {
+			ReadFramebufferToMemory(currentRenderVfb_);
+		}
 	}
 
 	// None found? Create one.
@@ -604,8 +605,9 @@ void FramebufferManager::CopyDisplayToOutput() {
 		glBindTexture(GL_TEXTURE_2D, 0);
 	}
 
-	// TODO: Add a way to disable the call since it is rather expensive.
-	ReadFramebufferToMemory(vfb);
+	if(g_Config.bFramebuffersToMem) {
+		ReadFramebufferToMemory(vfb);
+	}
 
 	if (resized_) {
 		glstate.depthWrite.set(GL_TRUE);
@@ -775,31 +777,31 @@ void FramebufferManager::ReadFramebufferToMemory(VirtualFramebuffer *vfb) {
 
 		int pixelType, pixelSize, pixelFormat, align;
 		switch (vfb->format) {
-				case GE_FORMAT_4444: // 16 bit ABGR
-					pixelType = GL_UNSIGNED_SHORT_4_4_4_4_REV;
-					pixelFormat = GL_RGBA;
-					pixelSize = 2;
-					align = 8;
-					break;
-				case GE_FORMAT_5551: // 16 bit ABGR
-					pixelType = GL_UNSIGNED_SHORT_1_5_5_5_REV;
-					pixelFormat = GL_RGBA;
-					pixelSize = 2;
-					align = 8;
-					break;
-				case GE_FORMAT_565: // 16 bit BGR
-					pixelType = GL_UNSIGNED_SHORT_5_6_5_REV;
-					pixelFormat = GL_RGB;
-					pixelSize = 2;
-					align = 8;
-					break;
-				case GE_FORMAT_8888: // 32 bit ABGR
-				default: // And same as above
-					pixelType = GL_UNSIGNED_INT_8_8_8_8_REV;
-					pixelFormat = GL_RGBA;
-					pixelSize = 4;
-					align = 4;
-					break;
+			case GE_FORMAT_4444: // 16 bit ABGR
+				pixelType = GL_UNSIGNED_SHORT_4_4_4_4_REV;
+				pixelFormat = GL_RGBA;
+				pixelSize = 2;
+				align = 8;
+				break;
+			case GE_FORMAT_5551: // 16 bit ABGR
+				pixelType = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+				pixelFormat = GL_RGBA;
+				pixelSize = 2;
+				align = 8;
+				break;
+			case GE_FORMAT_565: // 16 bit BGR
+				pixelType = GL_UNSIGNED_SHORT_5_6_5_REV;
+				pixelFormat = GL_RGB;
+				pixelSize = 2;
+				align = 8;
+				break;
+			case GE_FORMAT_8888: // 32 bit ABGR
+			default: // And same as above
+				pixelType = GL_UNSIGNED_INT_8_8_8_8_REV;
+				pixelFormat = GL_RGBA;
+				pixelSize = 4;
+				align = 4;
+				break;
 		}
 
 		if (useBufferedRendering_) {