1 files changed, 30 insertions, 44 deletions

diff --git a/indra/llrender/llrendertarget.h b/indra/llrender/llrendertarget.h
index ae8613d9be..6dc84d978d 100644..100755
--- a/indra/llrender/llrendertarget.h
+++ b/indra/llrender/llrendertarget.h
@@ -28,7 +28,6 @@
 #define LL_LLRENDERTARGET_H
 
 // LLRenderTarget is unavailible on the mapserver since it uses FBOs.
-#if !LL_MESA_HEADLESS
 
 #include "llgl.h"
 #include "llrender.h"
@@ -57,34 +56,40 @@
 
 */
 
-class LLMultisampleBuffer;
-
 class LLRenderTarget
 {
 public:
 	//whether or not to use FBO implementation
-	static BOOL sUseFBO; 
+	static bool sUseFBO; 
+	static U32 sBytesAllocated;
+	static U32 sCurFBO;
+	static U32 sCurResX;
+	static U32 sCurResY;
+
 
 	LLRenderTarget();
-	virtual ~LLRenderTarget();
+	~LLRenderTarget();
 
 	//allocate resources for rendering
 	//must be called before use
 	//multiple calls will release previously allocated resources
-	void allocate(U32 resx, U32 resy, U32 color_fmt, BOOL depth, BOOL stencil, LLTexUnit::eTextureType usage = LLTexUnit::TT_TEXTURE, BOOL use_fbo = FALSE);
+	bool allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage = LLTexUnit::TT_TEXTURE, bool use_fbo = false, S32 samples = 0);
 
-	//provide this render target with a multisample resource.
-	void setSampleBuffer(LLMultisampleBuffer* buffer);
+	//resize existing attachments to use new resolution and color format
+	// CAUTION: if the GL runs out of memory attempting to resize, this render target will be undefined
+	// DO NOT use for screen space buffers or for scratch space for an image that might be uploaded
+	// DO use for render targets that resize often and aren't likely to ruin someone's day if they break
+	void resize(U32 resx, U32 resy);
 
 	//add color buffer attachment
 	//limit of 4 color attachments per render target
-	virtual void addColorAttachment(U32 color_fmt);
+	bool addColorAttachment(U32 color_fmt);
 
 	//allocate a depth texture
-	virtual void allocateDepth();
+	bool allocateDepth();
 
 	//share depth buffer with provided render target
-	virtual void shareDepthBuffer(LLRenderTarget& target);
+	void shareDepthBuffer(LLRenderTarget& target);
 
 	//free any allocated resources
 	//safe to call redundantly
@@ -92,11 +97,8 @@ public:
 
 	//bind target for rendering
 	//applies appropriate viewport
-	virtual void bindTarget();
+	void bindTarget();
 
-	//unbind target for rendering
-	static void unbindTarget();
-	
 	//clear render targer, clears depth buffer if present,
 	//uses scissor rect if in copy-to-texture mode
 	void clear(U32 mask = 0xFFFFFFFF);
@@ -113,9 +115,10 @@ public:
 	LLTexUnit::eTextureType getUsage(void) const { return mUsage; }
 
 	U32 getTexture(U32 attachment = 0) const;
+	U32 getNumTextures() const;
 
 	U32 getDepth(void) const { return mDepth; }
-	BOOL hasStencil() const { return mStencil; }
+	bool hasStencil() const { return mStencil; }
 
 	void bindTexture(U32 index, S32 channel);
 
@@ -125,7 +128,7 @@ public:
 	// call bindTarget once, do all your rendering, call flush once
 	// if fetch_depth is TRUE, every effort will be made to copy the depth buffer into 
 	// the current depth texture.  A depth texture will be allocated if needed.
-	void flush(BOOL fetch_depth = FALSE);
+	void flush(bool fetch_depth = FALSE);
 
 	void copyContents(LLRenderTarget& source, S32 srcX0, S32 srcY0, S32 srcX1, S32 srcY1,
 						S32 dstX0, S32 dstY0, S32 dstX1, S32 dstY1, U32 mask, U32 filter);
@@ -136,45 +139,28 @@ public:
 	//Returns TRUE if target is ready to be rendered into.
 	//That is, if the target has been allocated with at least
 	//one renderable attachment (i.e. color buffer, depth buffer).
-	BOOL isComplete() const;
+	bool isComplete() const;
 
 	static LLRenderTarget* getCurrentBoundTarget() { return sBoundTarget; }
 
 protected:
-	friend class LLMultisampleBuffer;
 	U32 mResX;
 	U32 mResY;
 	std::vector<U32> mTex;
+	std::vector<U32> mInternalFormat;
 	U32 mFBO;
+	U32 mPreviousFBO;
+	U32 mPreviousResX;
+	U32 mPreviousResY;
+
 	U32 mDepth;
-	BOOL mStencil;
-	BOOL mUseDepth;
-	BOOL mRenderDepth;
+	bool mStencil;
+	bool mUseDepth;
+	bool mRenderDepth;
 	LLTexUnit::eTextureType mUsage;
-	U32 mSamples;
-	LLMultisampleBuffer* mSampleBuffer;
-
-	static LLRenderTarget* sBoundTarget;
 	
+	static LLRenderTarget* sBoundTarget;
 };
 
-class LLMultisampleBuffer : public LLRenderTarget
-{
-public:
-	LLMultisampleBuffer();
-	virtual ~LLMultisampleBuffer();
-
-	void releaseSampleBuffer();
-
-	virtual void bindTarget();
-	void bindTarget(LLRenderTarget* ref);
-	virtual void allocate(U32 resx, U32 resy, U32 color_fmt, BOOL depth, BOOL stencil, LLTexUnit::eTextureType usage, BOOL use_fbo);
-	void allocate(U32 resx, U32 resy, U32 color_fmt, BOOL depth, BOOL stencil, LLTexUnit::eTextureType usage, BOOL use_fbo, U32 samples);
-	virtual void addColorAttachment(U32 color_fmt);
-	virtual void allocateDepth();
-};
-
-#endif //!LL_MESA_HEADLESS
-
 #endif