1 files changed, 39 insertions, 5 deletions

diff --git a/indra/llrender/llrendertarget.cpp b/indra/llrender/llrendertarget.cpp
index c1b96a43da..429b91c878 100644..100755
--- a/indra/llrender/llrendertarget.cpp
+++ b/indra/llrender/llrendertarget.cpp
@@ -53,11 +53,19 @@ void check_framebuffer_status()
 bool LLRenderTarget::sUseFBO = false;
 U32 LLRenderTarget::sCurFBO = 0;
 
+
+extern S32 gGLViewport[4];
+
+U32 LLRenderTarget::sCurResX = 0;
+U32 LLRenderTarget::sCurResY = 0;
+
 LLRenderTarget::LLRenderTarget() :
 	mResX(0),
 	mResY(0),
 	mFBO(0),
 	mPreviousFBO(0),
+	mPreviousResX(0),
+	mPreviousResY(0),
 	mDepth(0),
 	mStencil(0),
 	mUseDepth(false),
@@ -109,8 +117,8 @@ void LLRenderTarget::resize(U32 resx, U32 resy, U32 color_fmt)
 
 bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo, S32 samples)
 {
-	resx = llmin(resx, (U32) 4096);
-	resy = llmin(resy, (U32) 4096);
+	resx = llmin(resx, (U32) gGLManager.mGLMaxTextureSize);
+	resy = llmin(resy, (U32) gGLManager.mGLMaxTextureSize);
 
 	stop_glerror();
 	release();
@@ -390,13 +398,12 @@ void LLRenderTarget::bindTarget()
 {
 	if (mFBO)
 	{
-		mPreviousFBO = sCurFBO;
-
 		stop_glerror();
 		
+		mPreviousFBO = sCurFBO;
 		glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
 		sCurFBO = mFBO;
-
+		
 		stop_glerror();
 		if (gGLManager.mHasDrawBuffers)
 		{ //setup multiple render targets
@@ -418,7 +425,12 @@ void LLRenderTarget::bindTarget()
 		stop_glerror();
 	}
 
+	mPreviousResX = sCurResX;
+	mPreviousResY = sCurResY;
 	glViewport(0, 0, mResX, mResY);
+	sCurResX = mResX;
+	sCurResY = mResY;
+
 	sBoundTarget = this;
 }
 
@@ -458,6 +470,12 @@ U32 LLRenderTarget::getTexture(U32 attachment) const
 	return mTex[attachment];
 }
 
+U32 LLRenderTarget::getNumTextures() const
+{
+	return mTex.size();
+}
+
+
 void LLRenderTarget::bindTexture(U32 index, S32 channel)
 {
 	gGL.getTexUnit(channel)->bindManual(mUsage, getTexture(index));
@@ -489,6 +507,20 @@ void LLRenderTarget::flush(bool fetch_depth)
 		stop_glerror();
 		glBindFramebuffer(GL_FRAMEBUFFER, mPreviousFBO);
 		sCurFBO = mPreviousFBO;
+
+		if (mPreviousFBO)
+		{
+			glViewport(0, 0, mPreviousResX, mPreviousResY);
+			sCurResX = mPreviousResX;
+			sCurResY = mPreviousResY;
+		}
+		else
+		{
+			glViewport(gGLViewport[0],gGLViewport[1],gGLViewport[2],gGLViewport[3]);
+			sCurResX = gGLViewport[2];
+			sCurResY = gGLViewport[3];
+		}
+						
 		stop_glerror();
 	}
 }
@@ -579,3 +611,5 @@ void LLRenderTarget::getViewport(S32* viewport)
 	viewport[3] = mResY;
 }
 
+
+