diff --git a/src/FrameBuffer.cpp b/src/FrameBuffer.cpp
index d11fae34..1f185f17 100644
--- a/src/FrameBuffer.cpp
+++ b/src/FrameBuffer.cpp
@@ -932,7 +932,7 @@ void FrameBufferList::renderBuffer(u32 _address)
 
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
-	OGLRender::TexturedRectParams params(0.0f, 0.0f, width, height, 0.0f, 0.0f, width - 1.0f, height - 1.0f, false, false, pFilteredBuffer);
+	OGLRender::TexturedRectParams params(0.0f, 0.0f, width, height, 0.0f, 0.0f, width - 1.0f, height - 1.0f, 1.0f, 1.0f, false, false, pFilteredBuffer);
 	ogl.getRender().drawTexturedRect(params);
 
 	glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
@@ -1782,7 +1782,7 @@ void RDRAMtoFrameBuffer::CopyFromRDRAM(u32 _address, bool _bCFB)
 
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_pCurBuffer->m_FBO);
 	OGLRender::TexturedRectParams params((float)x0, (float)y0, (float)width, (float)height,
-										 0.0f, 0.0f, width - 1.0f, height - 1.0f,
+										 0.0f, 0.0f, width - 1.0f, height - 1.0f, 1.0f, 1.0f,
 										 false, true, m_pCurBuffer);
 	video().getRender().drawTexturedRect(params);
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frameBufferList().getCurrent()->m_FBO);
diff --git a/src/OpenGL.cpp b/src/OpenGL.cpp
index a46ad5d1..d4761b2f 100644
--- a/src/OpenGL.cpp
+++ b/src/OpenGL.cpp
@@ -1147,18 +1147,18 @@ void OGLRender::drawTexturedRect(const TexturedRectParams & _params)
 			f32 shiftScaleT = 1.0f;
 			getTextureShiftScale(t, cache, shiftScaleS, shiftScaleT);
 			if (_params.uls > _params.lrs) {
-				texST[t].s0 = (_params.uls + 1.0f) * shiftScaleS - gSP.textureTile[t]->fuls;
+				texST[t].s0 = (_params.uls + _params.dsdx) * shiftScaleS - gSP.textureTile[t]->fuls;
 				texST[t].s1 = _params.lrs * shiftScaleS - gSP.textureTile[t]->fuls;
 			} else {
 				texST[t].s0 = _params.uls * shiftScaleS - gSP.textureTile[t]->fuls;
-				texST[t].s1 = (_params.lrs + 1.0f) * shiftScaleS - gSP.textureTile[t]->fuls;
+				texST[t].s1 = (_params.lrs + _params.dsdx) * shiftScaleS - gSP.textureTile[t]->fuls;
 			}
 			if (_params.ult > _params.lrt) {
-				texST[t].t0 = (_params.ult + 1.0f) * shiftScaleT - gSP.textureTile[t]->fult;
+				texST[t].t0 = (_params.ult + _params.dtdy) * shiftScaleT - gSP.textureTile[t]->fult;
 				texST[t].t1 = _params.lrt * shiftScaleT - gSP.textureTile[t]->fult;
 			} else {
 				texST[t].t0 = _params.ult * shiftScaleT - gSP.textureTile[t]->fult;
-				texST[t].t1 = (_params.lrt + 1.0f) * shiftScaleT - gSP.textureTile[t]->fult;
+				texST[t].t1 = (_params.lrt + _params.dtdy) * shiftScaleT - gSP.textureTile[t]->fult;
 			}
 
 			if (cache.current[t]->frameBufferTexture) {
diff --git a/src/OpenGL.h b/src/OpenGL.h
index 081c2d3f..fba15d26 100644
--- a/src/OpenGL.h
+++ b/src/OpenGL.h
@@ -86,13 +86,16 @@ public:
 	{
 		float ulx, uly, lrx, lry;
 		float uls, ult, lrs, lrt;
+		float dsdx, dtdy;
 		bool flip, forceAjustScale;
 		const FrameBuffer * pBuffer;
 		TexturedRectParams(float _ulx, float _uly, float _lrx, float _lry,
 						   float _uls, float _ult, float _lrs, float _lrt,
+						   float _dsdx, float _dtdy,
 						   bool _flip, bool _forceAjustScale, const FrameBuffer * _pBuffer) :
 			ulx(_ulx), uly(_uly), lrx(_lrx), lry(_lry),
 			uls(_uls), ult(_ult), lrs(_lrs), lrt(_lrt),
+			dsdx(_dsdx), dtdy(_dtdy),
 			flip(_flip), forceAjustScale(_forceAjustScale), pBuffer(_pBuffer)
 		{}
 	};
diff --git a/src/gDP.cpp b/src/gDP.cpp
index bde26b81..ecd90ffc 100644
--- a/src/gDP.cpp
+++ b/src/gDP.cpp
@@ -867,7 +867,8 @@ void gDPTextureRectangle( f32 ulx, f32 uly, f32 lrx, f32 lry, s32 tile, f32 s, f
 		lrt = t + (lry - uly - 1) * dtdy;
 	}
 
-	OGLRender::TexturedRectParams params(ulx, uly, lrx, lry, s, t, lrs, lrt, (RSP.cmd == G_TEXRECTFLIP), false, frameBufferList().getCurrent());
+	OGLRender::TexturedRectParams params(ulx, uly, lrx, lry, s, t, lrs, lrt, fabsf(dsdx), fabsf(dtdy),
+                                        (RSP.cmd == G_TEXRECTFLIP), false, frameBufferList().getCurrent());
 	video().getRender().drawTexturedRect(params);
 
 	gSP.textureTile[0] = textureTileOrg[0];