diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_light.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_light.cpp
index 073d39176..e5c3cff6e 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_light.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_light.cpp
@@ -139,8 +139,13 @@ void	CDriverGL::setLightInternal(uint8 num, const CLight& light)
 		else
 		{
 			// Deactivate spot properties
+#ifdef USE_OPENGLES
+			glLightf (lightNum, GL_SPOT_CUTOFF, 180.f);
+			glLightf (lightNum, GL_SPOT_EXPONENT, 0.f);
+#else
 			glLighti (lightNum, GL_SPOT_CUTOFF, 180);
 			glLighti (lightNum, GL_SPOT_EXPONENT, 0);
+#endif
 		}
 
 		// Flag this light as dirt.
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_matrix.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_matrix.cpp
index 0e5cea073..4106c38f2 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_matrix.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_matrix.cpp
@@ -15,24 +15,35 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "stdopengl.h"
-
 #include "driver_opengl.h"
+
 namespace NL3D {
 
 // ***************************************************************************
 void CDriverGL::setFrustum(float left, float right, float bottom, float top, float znear, float zfar, bool perspective)
 {
-	H_AUTO_OGL(CDriverGL_setFrustum)
+	H_AUTO_OGL(CDriverGL_setFrustum);
+
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
+
 	if (perspective)
 	{
+#ifdef USE_OPENGLES
+		glFrustumf(left,right,bottom,top,znear,zfar);
+#else
 		glFrustum(left,right,bottom,top,znear,zfar);
+#endif
 	}
 	else
 	{
+#ifdef USE_OPENGLES
+		glOrthof(left,right,bottom,top,znear,zfar);
+#else
 		glOrtho(left,right,bottom,top,znear,zfar);
+#endif
 	}
+
 	_ProjMatDirty = true;
 
 	// Backup znear and zfar for zbias setup
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_states.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_states.cpp
index fb4f14dc2..e0c79c504 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_states.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_states.cpp
@@ -144,33 +144,62 @@ void			CDriverGLStates::forceDefaults(uint nbStages)
 	for(stage=0;stage<nbStages; stage++)
 	{
 		// disable texturing.
+#ifdef USE_OPENGLES
+		glActiveTexture(GL_TEXTURE0+stage);
+#else
 		nglActiveTextureARB(GL_TEXTURE0_ARB+stage);
+#endif
+
 		glDisable(GL_TEXTURE_2D);
+
 		if(_TextureCubeMapSupported)
+		{
+#ifdef USE_OPENGLES
+			glDisable(GL_TEXTURE_CUBE_MAP_OES);
+			glDisable(GL_TEXTURE_GEN_STR_OES);
+#else
 			glDisable(GL_TEXTURE_CUBE_MAP_ARB);
-		if(_TextureRectangleSupported)
-			glDisable(GL_TEXTURE_RECTANGLE_NV);
+#endif
+		}
+
 		_TextureMode[stage]= TextureDisabled;
 
 		// Tex gen init
 		_TexGenMode[stage] = 0;
-		glDisable( GL_TEXTURE_GEN_S );
-		glDisable( GL_TEXTURE_GEN_T );
-		glDisable( GL_TEXTURE_GEN_R );
-		glDisable( GL_TEXTURE_GEN_Q );
+
+#ifndef USE_OPENGLES
+		if(_TextureRectangleSupported)
+			glDisable(GL_TEXTURE_RECTANGLE_NV);
+
+		glDisable(GL_TEXTURE_GEN_S);
+		glDisable(GL_TEXTURE_GEN_T);
+		glDisable(GL_TEXTURE_GEN_R);
+		glDisable(GL_TEXTURE_GEN_Q);
+#endif
 	}
 
 	// ActiveTexture current texture to 0.
+#ifdef USE_OPENGLES
+	glActiveTexture(GL_TEXTURE0);
+	glClientActiveTexture(GL_TEXTURE0);
+#else
 	nglActiveTextureARB(GL_TEXTURE0_ARB);
-	_CurrentActiveTextureARB= 0;
 	nglClientActiveTextureARB(GL_TEXTURE0_ARB);
+#endif
+
+	_CurrentActiveTextureARB= 0;
 	_CurrentClientActiveTextureARB= 0;
 
 	// Depth range
 	_DepthRangeNear = 0.f;
 	_DepthRangeFar = 1.f;
 	_ZBias = 0.f;
+
+#ifdef USE_OPENGLES
+	glDepthRangef (0.f, 1.f);
+#else
 	glDepthRange (0, 1);
+#endif
 
 	// Cull order
 	_CullMode = CCW;
@@ -536,7 +565,9 @@ void			CDriverGLStates::setVertexColorLighted(bool enable)
 		if (_VertexColorLighted)
 		{
 			glEnable (GL_COLOR_MATERIAL);
+#ifndef USE_OPENGLES
 			glColorMaterial (GL_FRONT_AND_BACK, GL_DIFFUSE);
+#endif
 		}
 		else
 		{
@@ -558,9 +589,15 @@ void			CDriverGLStates::setVertexColorLighted(bool enable)
 // ***************************************************************************
 void CDriverGLStates::updateDepthRange()
 {
-	H_AUTO_OGL(CDriverGLStates_updateDepthRange)
+	H_AUTO_OGL(CDriverGLStates_updateDepthRange);
+
 	float delta = _ZBias * (_DepthRangeFar - _DepthRangeNear);
+
+#ifdef USE_OPENGLES
+	glDepthRangef(delta + _DepthRangeNear, delta + _DepthRangeFar);
+#else
 	glDepthRange(delta + _DepthRangeNear, delta + _DepthRangeFar);
+#endif
 }
 
 // ***************************************************************************
@@ -631,9 +668,13 @@ void		CDriverGLStates::setTexGenMode (uint stage, GLint mode)
 				glDisable( GL_TEXTURE_GEN_Q );
 			}
 			// Enable All.
+#ifdef USE_OPENGLES
+			glEnable(GL_TEXTURE_GEN_STR_OES);
+#else
 			glEnable( GL_TEXTURE_GEN_S );
 			glEnable( GL_TEXTURE_GEN_T );
 			glEnable( GL_TEXTURE_GEN_R );
+#endif
 		}
 	}
 }
@@ -649,12 +690,19 @@ void			CDriverGLStates::resetTextureMode()
 
 	if (_TextureCubeMapSupported)
 	{
+#ifdef USE_OPENGLES
+		glDisable(GL_TEXTURE_CUBE_MAP_OES);
+#else
 		glDisable(GL_TEXTURE_CUBE_MAP_ARB);
+#endif
 	}
+
+#ifndef USE_OPENGLES
 	if (_TextureRectangleSupported)
 	{
 		glDisable(GL_TEXTURE_RECTANGLE_NV);
 	}
+#endif
 
 	_TextureMode[_CurrentActiveTextureARB]= TextureDisabled;
 }
@@ -674,11 +722,13 @@ void			CDriverGLStates::setTextureMode(TTextureMode texMode)
 		}
 		else if(oldTexMode == TextureRect)
 		{
+#ifndef USE_OPENGLES
 			if(_TextureRectangleSupported)
 			{
 				glDisable(GL_TEXTURE_RECTANGLE_NV);
 			}
 			else
+#endif
 			{
 				glDisable(GL_TEXTURE_2D);
 			}
@@ -687,7 +737,11 @@ void			CDriverGLStates::setTextureMode(TTextureMode texMode)
 		{
 			if(_TextureCubeMapSupported)
 			{
+#ifdef USE_OPENGLES
+				glDisable(GL_TEXTURE_CUBE_MAP_OES);
+#else
 				glDisable(GL_TEXTURE_CUBE_MAP_ARB);
+#endif
 			}
 			else
 			{
@@ -702,24 +756,30 @@ void			CDriverGLStates::setTextureMode(TTextureMode texMode)
 		}
 		else if(texMode == TextureRect)
 		{
+#ifndef USE_OPENGLES
 			if(_TextureRectangleSupported)
 			{
 				glEnable(GL_TEXTURE_RECTANGLE_NV);
 			}
 			else
+#endif
 			{
-				glDisable(GL_TEXTURE_2D);
+				glEnable(GL_TEXTURE_2D);
 			}
 		}
 		else if(texMode == TextureCubeMap)
 		{
 			if(_TextureCubeMapSupported)
 			{
+#ifdef USE_OPENGLES
+				glEnable(GL_TEXTURE_CUBE_MAP_OES);
+#else
 				glEnable(GL_TEXTURE_CUBE_MAP_ARB);
+#endif
 			}
 			else
 			{
-				glDisable(GL_TEXTURE_2D);
+				glEnable(GL_TEXTURE_2D);
 			}
 		}
 
@@ -736,8 +796,11 @@ void			CDriverGLStates::activeTextureARB(uint stage)
 
 	if( _CurrentActiveTextureARB != stage )
 	{
+#ifdef USE_OPENGLES
+		glActiveTexture(GL_TEXTURE0+stage);
+#else
 		nglActiveTextureARB(GL_TEXTURE0_ARB+stage);
-
+#endif
 
 		_CurrentActiveTextureARB= stage;
 	}
@@ -748,7 +811,11 @@ void			CDriverGLStates::forceActiveTextureARB(uint stage)
 {
 	H_AUTO_OGL(CDriverGLStates_forceActiveTextureARB);
 
+#ifdef USE_OPENGLES
+	glActiveTexture(GL_TEXTURE0+stage);
+#else
 	nglActiveTextureARB(GL_TEXTURE0_ARB+stage);
+#endif
 
 	_CurrentActiveTextureARB= stage;
 }
@@ -828,12 +895,15 @@ void			CDriverGLStates::enableSecondaryColorArray(bool enable)
 
 
 		_SecondaryColorArrayEnabled= enable;
+
+#ifndef USE_OPENGLES
 		// If disable
 		if(!enable)
 		{
 			// GeForceFx Bug: Must reset Secondary color to 0 (if comes from a VP), else bugs
 			nglSecondaryColor3ubEXT(0,0,0);
 		}
+#endif
 	}
 }
 
@@ -988,7 +1058,13 @@ void			CDriverGLStates::enableFog(uint enable)
 void CDriverGLStates::forceBindARBVertexBuffer(uint objectID)
 {
 	H_AUTO_OGL(CDriverGLStates_forceBindARBVertexBuffer)
+
+#ifdef USE_OPENGLES
+	glBindBuffer(GL_ARRAY_BUFFER, objectID);
+#else
 	nglBindBufferARB(GL_ARRAY_BUFFER_ARB, objectID);
+#endif
+
 	_CurrARBVertexBuffer = objectID;
 }
 
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_vertex.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_vertex.cpp
index d739aea0b..09ff88748 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_vertex.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_vertex.cpp
@@ -280,8 +280,12 @@ bool CDriverGL::renderLines(CMaterial& mat, uint32 firstIndex, uint32 nlines)
 			}
 			else
 			{
+#ifdef USE_OPENGLES
+				nlerror("not available in OpenGL ES 1.0, only use 16 bits indices");
+#else
 				nlassert(_LastIB._Format == CIndexBuffer::Indices32);
 				glDrawElements(GL_LINES,2*nlines,GL_UNSIGNED_INT,((uint32 *) _LastIB._Values)+firstIndex);
+#endif
 			}
 		}
 	}
@@ -336,8 +340,12 @@ bool CDriverGL::renderTriangles(CMaterial& mat, uint32 firstIndex, uint32 ntris)
 			}
 			else
 			{
+#ifdef USE_OPENGLES
+				nlerror("not available in OpenGL ES 1.0, only use 16 bits indices");
+#else
 				nlassert(_LastIB._Format == CIndexBuffer::Indices32);
 				glDrawElements(GL_TRIANGLES,3*ntris,GL_UNSIGNED_INT, ((uint32 *) _LastIB._Values)+firstIndex);
+#endif
 			}
 		}
 	}
@@ -380,8 +388,12 @@ bool CDriverGL::renderSimpleTriangles(uint32 firstTri, uint32 ntris)
 	}
 	else
 	{
+#ifdef USE_OPENGLES
+		nlerror("not available in OpenGL ES 1.0, only use 16 bits indices");
+#else
 		nlassert(_LastIB._Format == CIndexBuffer::Indices32);
 		glDrawElements(GL_TRIANGLES,3*ntris,GL_UNSIGNED_INT, ((uint32 *) _LastIB._Values)+firstTri);
+#endif
 	}
 
 	// Profiling.
@@ -608,6 +620,9 @@ bool CDriverGL::renderRawQuads(CMaterial& mat, uint32 startIndex, uint32 numQuad
 			}
 			else
 			{
+#ifdef USE_OPENGLES
+				nlerror("not available in OpenGL ES 1.0, only use 16 bits indices");
+#else
 				// indices fits on 32 bits
 				GLint indices[QUAD_BATCH_SIZE];
 				GLint *curr = indices;
@@ -625,6 +640,7 @@ bool CDriverGL::renderRawQuads(CMaterial& mat, uint32 startIndex, uint32 numQuad
 				}
 				while(curr != end);
 				glDrawElements(GL_TRIANGLES, 6 * numQuadsToDraw, GL_UNSIGNED_INT, indices);
+#endif
 			}
 			numLeftQuads -= numQuadsToDraw;
 			currIndex += 4 * numQuadsToDraw;
@@ -665,10 +681,12 @@ void		CDriverGL::setupUVPtr(uint stage, CVertexBufferInfo &VB, uint uvId)
 			// Setup ATI VBHard or std ptr.
 			switch(VB.VBMode)
 			{
+#ifndef USE_OPENGLES
 				case CVertexBufferInfo::HwATI:
 					nglArrayObjectATI(GL_TEXTURE_COORD_ARRAY, numTexCoord, GL_FLOAT, VB.VertexSize, VB.VertexObjectId,
 						              (ptrdiff_t) VB.ValuePtr[CVertexBuffer::TexCoord0+uvId]);
 				break;
+#endif
 				case CVertexBufferInfo::HwARB:
 					_DriverGLStates.bindARBVertexBuffer(VB.VertexObjectId);
 					// with arb buffers, position is relative to the start of the stream
@@ -811,6 +829,21 @@ const uint		CDriverGL::NumCoordinatesType[CVertexBuffer::NumType]=
 // ***************************************************************************
 const uint		CDriverGL::GLType[CVertexBuffer::NumType]=
 {
+#ifdef USE_OPENGLES
+	GL_FLOAT,	// Double1
+	GL_FLOAT,	// Float1
+	GL_SHORT,	// Short1
+	GL_FLOAT,	// Double2
+	GL_FLOAT,	// Float2
+	GL_SHORT,	// Short2
+	GL_FLOAT,	// Double3
+	GL_FLOAT,	// Float3
+	GL_SHORT,	// Short3
+	GL_FLOAT,	// Double4
+	GL_FLOAT,	// Float4
+	GL_SHORT,	// Short4
+	GL_UNSIGNED_BYTE	// UChar4
+#else
 	GL_DOUBLE,	// Double1
 	GL_FLOAT,	// Float1
 	GL_SHORT,	// Short1
@@ -824,6 +857,7 @@ const uint		CDriverGL::GLType[CVertexBuffer::NumType]=
 	GL_FLOAT,	// Float4
 	GL_SHORT,	// Short4
 	GL_UNSIGNED_BYTE	// UChar4
+#endif
 };
 
 // ***************************************************************************
@@ -926,6 +960,7 @@ void		CDriverGL::setupGlArraysStd(CVertexBufferInfo &vb)
 			}
 		}
 		break;
+#ifndef USE_OPENGLES
 		case CVertexBufferInfo::HwATI:
 		{
 			// setup vertex ptr.
@@ -963,9 +998,12 @@ void		CDriverGL::setupGlArraysStd(CVertexBufferInfo &vb)
 				nglArrayObjectATI(GL_COLOR_ARRAY, 4, GL_UNSIGNED_BYTE, vb.VertexSize, vb.VertexObjectId, (ptrdiff_t)  vb.ValuePtr[CVertexBuffer::PrimaryColor]);
 			}
 			else
+			{
 				_DriverGLStates.enableColorArray(false);
+			}
 		}
 		break;
+#endif
 		default:
 			nlassert(0);
 		break;
@@ -1035,7 +1073,9 @@ void		CDriverGL::toggleGlArraysForARBVertexProgram()
 	// If last was a VertexProgram setup, and now it is a standard GL array setup.
 	if( _LastSetupGLArrayVertexProgram && !isVertexProgramEnabled () )
 	{
+#ifndef USE_OPENGLES
 		if (_Extensions.ATITextureEnvCombine3)
+#endif
 		{
 			// fix for ATI : when switching from Vertex Program to fixed Pipe, must clean texture, otherwise texture may be disabled in next render
 			// (seems to be a driver bug)
@@ -1046,12 +1086,16 @@ void		CDriverGL::toggleGlArraysForARBVertexProgram()
 				// activate the texture, or disable texturing if NULL.
 				activateTexture(stage, NULL);
 			}
+
+#ifndef USE_OPENGLES
 			glBegin(GL_QUADS);
 			glVertex4f(0.f, 0.f, 0.f, 1.f);
 			glVertex4f(0.f, 0.f, 0.f, 1.f);
 			glVertex4f(0.f, 0.f, 0.f, 1.f);
 			glVertex4f(0.f, 0.f, 0.f, 1.f);
 			glEnd();
+#endif
+
 			for(uint stage=0 ; stage<inlGetNumTextStages() ; stage++)
 			{
 				// activate the texture, or disable texturing if NULL.
@@ -1185,7 +1229,9 @@ void		CDriverGL::setupGlArraysForNVVertexProgram(CVertexBufferInfo &vb)
 					{
 						// Secondary color
 						_DriverGLStates.enableSecondaryColorArray(true);
-						nglSecondaryColorPointerEXT(4,GL_UNSIGNED_BYTE, vb.VertexSize, vb.ValuePtr[value]);
+#ifndef USE_OPENGLES
+						nglSecondaryColorPointerEXT(4, GL_UNSIGNED_BYTE, vb.VertexSize, vb.ValuePtr[value]);
+#endif
 					}
 				}
 				else
@@ -1199,7 +1245,9 @@ void		CDriverGL::setupGlArraysForNVVertexProgram(CVertexBufferInfo &vb)
 
 					// Active this value
 					_DriverGLStates.enableVertexAttribArray(glIndex, true);
+#ifndef USE_OPENGLES
 					nglVertexAttribPointerNV (glIndex, NumCoordinatesType[type], GLType[type], vb.VertexSize, vb.ValuePtr[value]);
+#endif
 				}
 			}
 			// Else normal case, can't do anything for other values with UChar4....
@@ -1207,7 +1255,9 @@ void		CDriverGL::setupGlArraysForNVVertexProgram(CVertexBufferInfo &vb)
 			{
 				// Active this value
 				_DriverGLStates.enableVertexAttribArray(glIndex, true);
+#ifndef USE_OPENGLES
 				nglVertexAttribPointerNV (glIndex, NumCoordinatesType[type], GLType[type], vb.VertexSize, vb.ValuePtr[value]);
+#endif
 			}
 		}
 		else
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
index 7eadb54a8..ce436dcc6 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
@@ -1420,7 +1420,8 @@ void *CVertexBufferHardARB::lock()
 // ***************************************************************************
 void CVertexBufferHardARB::unlock()
 {
-	H_AUTO_OGL(CVertexBufferHardARB_unlock)
+	H_AUTO_OGL(CVertexBufferHardARB_unlock);
+
 	_VertexPtr = NULL;
 	if (_Invalid) return;
 	if (!_VertexObjectId) return;
@@ -1434,7 +1435,17 @@ void CVertexBufferHardARB::unlock()
 	#ifdef NL_DEBUG
 		_Unmapping = true;
 	#endif
-	GLboolean unmapOk = nglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
+	GLboolean unmapOk = false;
+
+#ifdef USE_OPENGLES
+	if (_Driver->_Extensions.OESMapBuffer)
+	{
+		unmapOk = nglUnmapBufferOES(GL_ARRAY_BUFFER);
+	}
+#else
+	unmapOk = nglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
+#endif
+
 	#ifdef NL_DEBUG
 		_Unmapping = false;
 	#endif