1 files changed, 251 insertions, 0 deletions
diff --git a/Runtime/Graphics/RenderBufferManager.cpp b/Runtime/Graphics/RenderBufferManager.cpp
new file mode 100644
index 0000000..2b0f25a
--- /dev/null
+++ b/Runtime/Graphics/RenderBufferManager.cpp
@@ -0,0 +1,251 @@
+#include "UnityPrefix.h"
+#include "RenderBufferManager.h"
+#include "Runtime/Camera/Camera.h"
+#include "Runtime/Camera/CameraUtil.h"
+#include "Runtime/Camera/RenderManager.h"
+#include "Runtime/GfxDevice/GfxDevice.h"
+#include "RenderTexture.h"
+#include "Runtime/Utilities/BitUtility.h"
+#include "Runtime/Profiler/Profiler.h"
+#if UNITY_XENON
+	#include "PlatformDependent/Xbox360/Source/GfxDevice/TexturesXenon.h"
+#elif UNITY_WII
+	#include "Runtime/Graphics/ScreenManager.h"	
+#endif
+
+#ifndef DEBUG_RB_MANAGER
+#define DEBUG_RB_MANAGER 0
+#endif
+
+using namespace std;
+
+static RenderBufferManager* gRenderBufferManager = NULL;
+
+void RenderBufferManager::InitRenderBufferManager ()
+{
+	Assert(gRenderBufferManager == NULL);
+	gRenderBufferManager = new RenderBufferManager();
+}
+
+void RenderBufferManager::CleanupRenderBufferManager ()
+{
+	Assert(gRenderBufferManager != NULL);
+	delete gRenderBufferManager;
+	gRenderBufferManager = NULL;
+}
+
+RenderBufferManager& GetRenderBufferManager ()
+{
+	Assert(gRenderBufferManager != NULL);
+	return *gRenderBufferManager;
+}
+
+RenderBufferManager* GetRenderBufferManagerPtr ()
+{
+	return gRenderBufferManager;
+}
+
+
+static int CalcSize( int size, int parentSize )
+{
+	switch (size) {
+	case RenderBufferManager::kFullSize:
+		return parentSize;
+	default:
+		#if DEBUGMODE
+		if( size <= 0 ) {
+			AssertString ("Invalid Temp Buffer size");
+			return 128;
+		}
+		#endif
+		return size;
+	}
+}
+
+
+RenderTexture *RenderBufferManager::GetTempBuffer (int width, int height, DepthBufferFormat depthFormat, RenderTextureFormat colorFormat, UInt32 flags, RenderTextureReadWrite colorSpace, int antiAliasing)
+{
+	if( colorFormat == kRTFormatDefault )
+		colorFormat = GetGfxDevice().GetDefaultRTFormat();
+
+	if( colorFormat == kRTFormatDefaultHDR )
+		colorFormat = GetGfxDevice().GetDefaultHDRRTFormat();
+
+	bool sRGB = colorSpace == kRTReadWriteSRGB;
+	const bool createdFromScript = flags & kRBCreatedFromScript;
+	const bool sampleOnlyDepth = flags & kRBSampleOnlyDepth;
+	const TextureDimension dim = (flags & kRBCubemap) ? kTexDimCUBE : kTexDim2D;
+
+	if (colorSpace == kRTReadWriteDefault)
+		sRGB = GetActiveColorSpace() == kLinearColorSpace;
+
+	// only SRGB where it makes sense
+	sRGB = sRGB && (colorFormat != GetGfxDevice().GetDefaultHDRRTFormat());
+
+	if( width <= 0 || height <= 0 )
+	{
+		if (dim != kTexDim2D) {
+			AssertString( "Trying to get a relatively sized RenderBuffer cubemap" );
+			return NULL;
+		}
+		Camera *cam = GetCurrentCameraPtr();
+		if (cam == NULL) {
+			AssertString ("Trying to get a relatively sized RenderBuffer without an active camera.");
+			return NULL;
+		}
+		Rectf r = cam->GetScreenViewportRect();
+#if UNITY_WII
+		GetScreenManager().ScaleViewportToFrameBuffer(r);
+#endif
+		// Figure out pixel size. Get screen extents as ints so we do the rounding correctly.
+		int viewport[4];
+		RectfToViewport(r, viewport);
+		width = viewport[2];
+		height = viewport[3];
+	}
+	
+	if (dim == kTexDimCUBE && (!IsPowerOfTwo(width) || width != height))
+	{
+		AssertString( "Trying to get a non square or non power of two RenderBuffer cubemap" );
+		return NULL;
+	}
+
+	if (antiAliasing < 1 || antiAliasing > 8 || !IsPowerOfTwo(antiAliasing))
+	{
+		AssertString( "Trying to get RenderBuffer with invalid antiAliasing (must be 1, 2, 4 or 8)" );
+		return NULL;
+	}
+	
+	// TODO: actually set & check depth
+
+	// Go over free textures & find the one that matches in parameters.
+	// The main point is: If we used a texture of same dims last frame we'll get that.
+	FreeTextures::iterator found = m_FreeTextures.end();
+	for( FreeTextures::iterator i = m_FreeTextures.begin(); i != m_FreeTextures.end(); ++i )
+	{
+		RenderTexture* rt = i->second;
+		if( !rt 
+		   || rt->GetDepthFormat() != depthFormat 
+		   || rt->GetColorFormat() != colorFormat 
+		   || rt->GetDimension() != dim
+		   //@TODO: Only matters on OSX as DX can just set sampler state...
+		   || rt->GetSRGBReadWrite() != sRGB
+		   || rt->GetAntiAliasing() != antiAliasing
+		   || rt->GetSampleOnlyDepth() != sampleOnlyDepth )
+			continue;
+		int tw = rt->GetWidth();
+		int th = rt->GetHeight();
+		
+		if (tw == width && th == height) { 	// If the texture is same size
+			found = i;
+			break;
+		}
+	}
+	
+	// We didn't find any.
+	if (found == m_FreeTextures.end() || !found->second)
+	{
+		m_TempBuffers++;
+		RenderTexture *tex = NEW_OBJECT (RenderTexture);
+		tex->Reset();
+
+		tex->SetHideFlags(Object::kDontSave);
+		tex->SetName (Format ("TempBuffer %d", m_TempBuffers).c_str());
+		tex->SetWidth(width);
+		tex->SetHeight(height);
+		tex->SetColorFormat( colorFormat );
+		tex->SetDepthFormat( depthFormat );
+		tex->SetDimension (dim);
+		tex->SetSRGBReadWrite (sRGB);
+		tex->SetAntiAliasing (antiAliasing);
+		tex->SetSampleOnlyDepth (sampleOnlyDepth);
+		tex->AwakeFromLoad(kInstantiateOrCreateFromCodeAwakeFromLoad);
+		m_TakenTextures.insert (tex);
+		#if DEBUG_RB_MANAGER
+		printf_console ("RBM: new texture %ix%i fmt=%i\n", width, height, colorFormat);
+		#endif
+		return tex;
+	}
+
+	// We found one. Move it from free to taken
+	RenderTexture *tex = found->second;
+	Assert (tex->GetWidth() == width && tex->GetHeight() == height);
+	m_TakenTextures.insert (tex);
+	m_FreeTextures.erase (found);
+
+	// Set it's parameters (filtering etc.) as if it was newly created
+	tex->GetSettings().Reset();
+	tex->GetSettings().m_WrapMode = kTexWrapClamp;
+	tex->ApplySettings();
+
+	tex->SetCreatedFromScript (createdFromScript);
+
+	// Automatically DiscardContents when createdFromScript - user can't expect any valid content.
+	if (createdFromScript)
+		tex->DiscardContents();
+
+	return tex;
+}
+
+PROFILER_INFORMATION(gRenderBufferCollect, "RenderTexture.GarbageCollectTemporary", kProfilerRender)
+
+void RenderBufferManager::GarbageCollect (int framesDelay)
+{
+	++m_CurrentRBMFrame;
+	
+	for (FreeTextures::iterator i = m_FreeTextures.begin(); i != m_FreeTextures.end();)
+	{
+		// Should only ever compare the difference since frame wraps around
+		int frameDiff = m_CurrentRBMFrame - i->first;
+		if( frameDiff > framesDelay || frameDiff < 0 )
+		{
+			PROFILER_AUTO(gRenderBufferCollect, NULL);
+			#if DEBUG_RB_MANAGER
+			printf_console ("RBM: kill unused texture (currframe=%i usedframe=%i)\n", m_CurrentRBMFrame, i->first);
+			#endif
+
+			FreeTextures::iterator j = i;
+			i++;
+			DestroySingleObject(j->second);
+			m_FreeTextures.erase (j);
+		}
+		else
+		{
+			i++;
+		}
+	}
+}
+
+
+void RenderBufferManager::Cleanup ()
+{
+	for (TakenTextures::iterator i=m_TakenTextures.begin();i != m_TakenTextures.end();i++)
+	{
+		DestroySingleObject(*i);
+	}
+	m_TakenTextures.clear();
+
+	for (FreeTextures::iterator i=m_FreeTextures.begin();i != m_FreeTextures.end();i++)
+	{
+		DestroySingleObject(i->second);
+	}
+	m_FreeTextures.clear();
+	#if DEBUG_RB_MANAGER
+	printf_console( "RBM: destroy all textures\n" );
+	#endif
+}
+	
+void RenderBufferManager::ReleaseTempBuffer (RenderTexture *rTex)
+{
+	if (!rTex)
+		return;
+	
+	if (!m_TakenTextures.count (PPtr<RenderTexture> (rTex)))
+	{
+		ErrorStringObject ("Attempting to release RenderTexture that were not gotten as a temp buffer", rTex);
+		return;
+	}
+
+	m_TakenTextures.erase (PPtr<RenderTexture> (rTex));
+	m_FreeTextures.push_back (make_pair (m_CurrentRBMFrame, PPtr<RenderTexture> (rTex)));
+}