diff --git a/btgui/OpenGLTrueTypeFont/fontstash.cpp b/btgui/OpenGLTrueTypeFont/fontstash.cpp
index a43b7ff5f..803e155e1 100644
--- a/btgui/OpenGLTrueTypeFont/fontstash.cpp
+++ b/btgui/OpenGLTrueTypeFont/fontstash.cpp
@@ -494,10 +494,10 @@ static int get_quad(struct sth_stash* stash, struct sth_font* fnt, struct sth_gl
 	ry = (*y + scale * float(glyph->yoff));
 	
 	q->x0 = rx;
-    q->y0 = ry + 1.5*0.5f*float(isize)/10.f;
+    q->y0 = ry + 1.5f*0.5f*float(isize)/10.f;
 
 	q->x1 = rx + scale * float(glyph->x1 - glyph->x0_);
-    q->y1 = ry + scale * float(glyph->y1 - glyph->y0)+ 1.5*0.5f*float(isize)/10.f;
+    q->y1 = ry + scale * float(glyph->y1 - glyph->y0)+ 1.5f*0.5f*float(isize)/10.f;
 	
 	q->s0 = float(glyph->x0_) * stash->itw;
 	q->t0 = float(glyph->y0) * stash->ith;
@@ -637,13 +637,13 @@ void sth_draw_texture(struct sth_stash* stash,
 		q.x1 = q.x0+width;
 		q.y1 = q.y0+height;
 
-		v = setv(v, q.x0, q.y0, 0,0,screenwidth,screenheight);
-		v = setv(v, q.x1, q.y0, 1,0,screenwidth,screenheight);
-		v = setv(v, q.x1, q.y1, 1,1,screenwidth,screenheight);
+		v = setv(v, q.x0, q.y0, 0,0,(float)screenwidth,(float)screenheight);
+		v = setv(v, q.x1, q.y0, 1,0,(float)screenwidth,(float)screenheight);
+		v = setv(v, q.x1, q.y1, 1,1,(float)screenwidth,(float)screenheight);
 
-		v = setv(v, q.x0, q.y0, 0,0,screenwidth,screenheight);
-		v = setv(v, q.x1, q.y1, 1,1,screenwidth,screenheight);
-		v = setv(v, q.x0, q.y1, 0,1,screenwidth,screenheight);
+		v = setv(v, q.x0, q.y0, 0,0,(float)screenwidth,(float)screenheight);
+		v = setv(v, q.x1, q.y1, 1,1,(float)screenwidth,(float)screenheight);
+		v = setv(v, q.x0, q.y1, 0,1,(float)screenwidth,(float)screenheight);
 		texture->nverts += 6;
 	}
 	
@@ -703,13 +703,13 @@ void sth_draw_text(struct sth_stash* stash,
         {
             v = &texture->newverts[texture->nverts];
 
-            v = setv(v, q.x0, q.y0, q.s0, q.t0,screenwidth,screenheight);
-            v = setv(v, q.x1, q.y0, q.s1, q.t0,screenwidth,screenheight);
-            v = setv(v, q.x1, q.y1, q.s1, q.t1,screenwidth,screenheight);
+            v = setv(v, q.x0, q.y0, q.s0, q.t0,(float)screenwidth,(float)screenheight);
+            v = setv(v, q.x1, q.y0, q.s1, q.t0,(float)screenwidth,(float)screenheight);
+            v = setv(v, q.x1, q.y1, q.s1, q.t1,(float)screenwidth,(float)screenheight);
 
-            v = setv(v, q.x0, q.y0, q.s0, q.t0,screenwidth,screenheight);
-            v = setv(v, q.x1, q.y1, q.s1, q.t1,screenwidth,screenheight);
-            v = setv(v, q.x0, q.y1, q.s0, q.t1,screenwidth,screenheight);
+            v = setv(v, q.x0, q.y0, q.s0, q.t0,(float)screenwidth,(float)screenheight);
+            v = setv(v, q.x1, q.y1, q.s1, q.t1,(float)screenwidth,(float)screenheight);
+            v = setv(v, q.x0, q.y1, q.s0, q.t1,(float)screenwidth,(float)screenheight);
 
             texture->nverts += 6;
         }
diff --git a/btgui/OpenGLWindow/GLInstancingRenderer.cpp b/btgui/OpenGLWindow/GLInstancingRenderer.cpp
index b5e96ab3c..e214c3220 100644
--- a/btgui/OpenGLWindow/GLInstancingRenderer.cpp
+++ b/btgui/OpenGLWindow/GLInstancingRenderer.cpp
@@ -178,7 +178,7 @@ struct InternalDataRenderer : public GLInstanceRendererInternalData
 
 			if (deltay<0 || m_cameraDistance>1)
 			{
-				m_cameraDistance -= deltay*0.1;
+				m_cameraDistance -= deltay*0.1f;
 				if (m_cameraDistance<1)
 					m_cameraDistance=1;
 			} else
@@ -234,8 +234,8 @@ struct InternalDataRenderer : public GLInstanceRendererInternalData
 			}
 			if (m_rightMouseButton)
 			{
-					m_cameraDistance -= xDelta*0.01;
-					m_cameraDistance -= yDelta*0.01;
+					m_cameraDistance -= xDelta*0.01f;
+					m_cameraDistance -= yDelta*0.01f;
 					if (m_cameraDistance<1)
 						m_cameraDistance=1;
 					if (m_cameraDistance>1000)
@@ -1205,7 +1205,7 @@ void GLInstancingRenderer::getMouseDirection(float* dir, int x, int y)
 	float farPlane = 10000.f;
 	rayForward*= farPlane;
 
-	b3Vector3 rightOffset;
+//	b3Vector3 rightOffset;
 	b3Vector3 vertical = m_data->m_cameraUp;
 
 	b3Vector3 hor;
@@ -1270,9 +1270,9 @@ void writeTextureToPng(int textureWidth, int textureHeight, const char* fileName
 			{
 				//printf("val[%d,%d]=%f\n", i,j,val);
 			}
-			pixels[(j*textureWidth+i)*numComponents]=orgPixels[(j*textureWidth+i)]*255.f;
-			pixels[(j*textureWidth+i)*numComponents+1]=0.f;//255.f;
-			pixels[(j*textureWidth+i)*numComponents+2]=0.f;//255.f;
+			pixels[(j*textureWidth+i)*numComponents]=char(orgPixels[(j*textureWidth+i)]*255.f);
+			pixels[(j*textureWidth+i)*numComponents+1]=0;//255.f;
+			pixels[(j*textureWidth+i)*numComponents+2]=0;//255.f;
 			pixels[(j*textureWidth+i)*numComponents+3]=255;
 
 		
diff --git a/src/Bullet3Collision/NarrowPhaseCollision/shared/b3ContactConvexConvexSAT.h b/src/Bullet3Collision/NarrowPhaseCollision/shared/b3ContactConvexConvexSAT.h
index b3d0c8031..65b333902 100644
--- a/src/Bullet3Collision/NarrowPhaseCollision/shared/b3ContactConvexConvexSAT.h
+++ b/src/Bullet3Collision/NarrowPhaseCollision/shared/b3ContactConvexConvexSAT.h
@@ -370,7 +370,7 @@ inline int b3ClipHullHullSingle(
 			B3_PROFILE("overlap");
 
 			b3Float4 normalOnSurfaceB = (b3Float4&)hostNormal;
-			b3Float4 centerOut;
+//			b3Float4 centerOut;
 			
 			b3Int4 contactIdx;
 			contactIdx.x = 0;
@@ -461,7 +461,7 @@ inline int b3ContactConvexConvexSAT(
     //printf("numvertsB = %d\n",hullB.m_numVertices);
     
 	
-	b3Float4 contactsOut[B3_MAX_VERTS];
+//	b3Float4 contactsOut[B3_MAX_VERTS];
 	int contactCapacity = B3_MAX_VERTS;
 	int numContactsOut=0;
 
diff --git a/src/Bullet3Collision/NarrowPhaseCollision/shared/b3FindSeparatingAxis.h b/src/Bullet3Collision/NarrowPhaseCollision/shared/b3FindSeparatingAxis.h
index 039130016..d7fde0501 100644
--- a/src/Bullet3Collision/NarrowPhaseCollision/shared/b3FindSeparatingAxis.h
+++ b/src/Bullet3Collision/NarrowPhaseCollision/shared/b3FindSeparatingAxis.h
@@ -149,7 +149,7 @@ inline bool b3FindSeparatingAxis(	const b3ConvexPolyhedronData& hullA, const b3C
 		}
 	}
 
-	b3Vector3 edgeAstart,edgeAend,edgeBstart,edgeBend;
+//	b3Vector3 edgeAstart,edgeAend,edgeBstart,edgeBend;
 
 	int curEdgeEdge = 0;
 	// Test edges