1 files changed, 210 insertions, 0 deletions
diff --git a/Runtime/Graphics/RenderTexture.h b/Runtime/Graphics/RenderTexture.h
new file mode 100644
index 0000000..44e7281
--- /dev/null
+++ b/Runtime/Graphics/RenderTexture.h
@@ -0,0 +1,210 @@
+#pragma once
+
+#include "Texture.h"
+#include "Runtime/GfxDevice/GfxDeviceTypes.h"
+#include "Runtime/GfxDevice/GfxDeviceObjects.h"
+#include "Runtime/Utilities/BitUtility.h"
+#include "Runtime/Utilities/LinkedList.h"
+#include "Runtime/Modules/ExportModules.h"
+
+namespace ShaderLab {
+	struct FastPropertyName;
+	class TexEnv;
+}
+
+enum {
+	kScreenOffscreen = -1,
+};
+
+
+class EXPORT_COREMODULE RenderTexture : public Texture
+{
+public:
+
+	DECLARE_OBJECT_SERIALIZE (RenderTexture)
+	REGISTER_DERIVED_CLASS (RenderTexture, Texture)
+
+	RenderTexture (MemLabelId label, ObjectCreationMode mode);
+	// virtual ~RenderTexture (); declared-by-macro
+
+	void SetWidth (int width);
+	int GetWidth () const { return m_Width; }
+
+	void SetHeight (int height);
+	int GetHeight () const { return m_Height; }
+
+	void SetDepthFormat( DepthBufferFormat depth );
+	DepthBufferFormat GetDepthFormat() const { return static_cast<DepthBufferFormat>(m_DepthFormat); }
+
+	bool GetIsPowerOfTwo () const { return IsPowerOfTwo(m_Width) && IsPowerOfTwo(m_Height); }
+
+	void SetDimension (TextureDimension dim);
+	virtual TextureDimension GetDimension() const { return m_Dimension; }
+
+	void SetVolumeDepth(int v);
+	int GetVolumeDepth() const { return m_VolumeDepth; }
+
+	void SetAntiAliasing(int aa);
+	int GetAntiAliasing() const { return m_AntiAliasing; }
+	bool IsAntiAliased() const { return m_AntiAliasing > 1; }
+
+	void SetMipMap( bool mipmap );
+	bool GetMipMap() const { return m_MipMap; }
+
+	void SetGenerateMips (bool v);
+	bool GetGenerateMips() const { return m_GenerateMips; }
+
+	void SetSRGBReadWrite(bool sRGB);
+	bool GetSRGBReadWrite() const { return m_SRGB; }
+
+	void SetEnableRandomWrite(bool v);
+	bool GetEnableRandomWrite() const { return m_EnableRandomWrite; }
+
+	void SetCreatedFromScript( bool fromScript ) { m_CreatedFromScript = fromScript; }
+	bool GetCreatedFromScript() const { return m_CreatedFromScript; }
+
+	void SetSampleOnlyDepth( bool sampleOnly ) { m_SampleOnlyDepth = sampleOnly; }
+	bool GetSampleOnlyDepth() const { return m_SampleOnlyDepth; }
+
+	RenderTextureFormat GetColorFormat() const { return static_cast<RenderTextureFormat>(m_ColorFormat); }
+	void SetColorFormat( RenderTextureFormat format );
+
+	virtual bool HasMipMap () const { return m_MipMap; }
+	virtual int CountMipmaps() const { return 1; } //@TODO ?
+
+	enum {
+		kFlagDontSetViewport  = (1<<0),
+		kFlagForceResolve     = (1<<1),    // Force resolve to texture: Used by MSAA targets and Xbox 360
+		kFlagDontRestoreColor = (1<<2),    // Xbox 360 specific: do not restore old contents to EDRAM
+		kFlagDontRestoreDepth = (1<<3),    // Xbox 360 specific: do not restore old contents to EDRAM
+		kFlagDontRestore      = kFlagDontRestoreColor | kFlagDontRestoreDepth,
+	};
+
+	static void FindAndSetSRGBWrite( RenderTexture* newActive );
+
+	// Makes the render texture the current render target. If texture is NULL the back buffer is activated.
+	static void SetActive( RenderTexture* texture, int mipLevel = 0, CubemapFace face = kCubeFaceUnknown, UInt32 flags = 0 );
+	static bool SetActive(int count, RenderSurfaceHandle* colors, RenderSurfaceHandle depth, RenderTexture* rt, int mipLevel = 0, CubemapFace face=kCubeFaceUnknown, UInt32 flags=0);
+
+	// Returns the active render texture.
+	// NULL means the main window is active.
+	static RenderTexture* GetActive();
+
+	// Does card support RTs, and built with Unity Pro, and not manually disabled?
+	static bool IsEnabled ();
+	// this should not be used... it's there only to support RenderTexture.enabled in scripts, in case anyone uses it.
+	static void SetEnabled (bool enable);
+
+	// Destroys all render textures created
+	static void ReleaseAll ();
+
+	// Creates the render texture.
+	// Create is automatically called inside Activate the first time.
+	// Create can fail if RenderTexture::IsEnabled is false
+	bool Create ();
+
+	// Destroys the render texture
+	void Release ();
+
+	// Is the render texture created?
+	bool IsCreated() const { return m_ColorHandle.IsValid() || m_DepthHandle.IsValid(); }
+
+	// Discards the contents of this render texture
+	// Xbox 360: will not restore contents to EDRAM the next time this RenderTexture is set.
+	// GLES: will use combo of glDiscardFramebufferEXT and glClear to avoid both resolve and restore
+	// Other platforms: currently no effect.
+	// NB: we have both because no-arg one had been used directly from scripts, so we keep it for b/c
+	void DiscardContents();
+	void DiscardContents(bool discardColor, bool discardDepth);
+	void MarkRestoreExpected();
+
+	virtual bool ExtractImage (ImageReference* /*image*/, int /*imageIndex*/ = 0) const { return false; }
+	virtual void ApplySettings();
+
+	virtual int GetRuntimeMemorySize() const;
+
+
+	#if UNITY_EDITOR
+	TextureFormat GetEditorUITextureFormat () const { return -1; }
+	#endif
+
+	#if ENABLE_PROFILER || UNITY_EDITOR
+	virtual int GetStorageMemorySize() const { return 0; }
+	static int GetCreatedRenderTextureCount ();
+	static int GetCreatedRenderTextureBytes ();
+	#endif
+
+
+	RenderSurfaceHandle GetColorSurfaceHandle() 		{ return m_ColorHandle; }
+	RenderSurfaceHandle GetResolvedColorSurfaceHandle() { return m_ResolvedColorHandle; }
+	RenderSurfaceHandle GetDepthSurfaceHandle() 		{ return m_DepthHandle; }
+
+
+	virtual int GetDataWidth() const { return m_Width; }
+	virtual int GetDataHeight() const { return m_Height; }
+
+	void AwakeFromLoad(AwakeFromLoadMode mode);
+
+	virtual void UnloadFromGfxDevice(bool /*forceUnloadAll*/) { }
+	virtual void UploadToGfxDevice() { }
+
+	ShaderLab::TexEnv *SetGlobalProperty (const ShaderLab::FastPropertyName& name);
+
+	void GrabPixels (int left, int bottom, int width, int height);
+
+	// Flips vertical texel size to positive or negative if we're not using OpenGL coords
+	void CorrectVerticalTexelSize(bool shouldBePositive);
+
+	const TextureID& GetSecondaryTextureID() { return m_SecondaryTexID; }
+
+	static void SetTemporarilyAllowIndieRenderTexture (bool allow);
+
+private:
+	void DestroySurfaces();
+	void ResolveAntiAliasedSurface();
+	void UpdateTexelSize();
+	bool GetSupportedMipMapFlag(bool mipMap) const;
+
+private:
+	int		m_Width; ///< range {1, 20000}
+	int		m_Height;///< range {1, 20000}
+	int		m_AntiAliasing;///< enum { None = 1, 2xMSAA = 2, 4xMSAA = 4, 8xMSAA = 8 } Anti-aliasing
+	int		m_VolumeDepth;///< range {1, 20000}
+	int		m_ColorFormat; ///< enum { RGBA32 = 0, Depth texture = 1 } Color buffer format
+	int		m_DepthFormat; ///< enum { No depth buffer = 0, 16 bit depth = 1, 24 bit depth = 2 } Depth buffer format
+	TextureDimension m_Dimension;
+	bool	m_MipMap;
+	bool	m_GenerateMips;
+	bool	m_SRGB;
+	bool	m_EnableRandomWrite;
+	bool	m_CreatedFromScript;
+	bool	m_SampleOnlyDepth;
+
+	TextureID m_SecondaryTexID;
+
+	RenderSurfaceHandle m_ColorHandle;
+	RenderSurfaceHandle m_ResolvedColorHandle;
+	RenderSurfaceHandle m_DepthHandle;
+	
+	int		m_RegisteredSizeForStats;
+
+	ListNode<RenderTexture> m_RenderTexturesNode;
+
+	bool m_SecondaryTexIDUsed;
+};
+
+int EstimateRenderTextureSize (int width, int height, int depth, RenderTextureFormat format, DepthBufferFormat depthFormat, TextureDimension dim, bool mipMap);
+
+// return or passed tex (but created if needed) or NULL if RT cannot be created by any reason
+RenderTexture* EnsureRenderTextureIsCreated(RenderTexture* tex);
+
+bool RenderTextureSupportsStencil(RenderTexture* rt);
+
+void RenderTextureDiscardContents(RenderTexture* rt, bool discardColor, bool discardDepth);
+
+#include "Runtime/Scripting/Backend/ScriptingTypes.h"
+struct ScriptingRenderBuffer
+{
+	int m_RenderTextureInstanceID;
+	RenderSurfaceBase* m_BufferPtr;
+};