Index: sdlmain.cpp
===================================================================
--- sdlmain.cpp	(revision 4225)
+++ sdlmain.cpp	(working copy)
@@ -720,6 +720,7 @@
 		// No borders
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+		GLfloat tex_offset=0.0;
 		if (!sdl.opengl.bilinear || ( (sdl.clip.h % height) == 0 && (sdl.clip.w % width) == 0) ) {
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@@ -726,6 +727,7 @@
 		} else {
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			tex_offset=0.5/(GLfloat)texsize;
 		}

 		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, texsize, texsize, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, 0);
@@ -742,8 +744,8 @@
 		glMatrixMode (GL_MODELVIEW);
 		glLoadIdentity ();

-		GLfloat tex_width=((GLfloat)(width)/(GLfloat)texsize);
-		GLfloat tex_height=((GLfloat)(height)/(GLfloat)texsize);
+		GLfloat tex_width=((GLfloat)(width)/(GLfloat)texsize)-tex_offset;
+		GLfloat tex_height=((GLfloat)(height)/(GLfloat)texsize)-tex_offset;

 		if (glIsList(sdl.opengl.displaylist)) glDeleteLists(sdl.opengl.displaylist, 1);
 		sdl.opengl.displaylist = glGenLists(1);
@@ -751,13 +753,13 @@
 		glBindTexture(GL_TEXTURE_2D, sdl.opengl.texture);
 		glBegin(GL_QUADS);
 		// lower left
-		glTexCoord2f(0,tex_height); glVertex2f(-1.0f,-1.0f);
+		glTexCoord2f(tex_offset,tex_height); glVertex2f(-1.0f,-1.0f);
 		// lower right
 		glTexCoord2f(tex_width,tex_height); glVertex2f(1.0f, -1.0f);
 		// upper right
-		glTexCoord2f(tex_width,0); glVertex2f(1.0f, 1.0f);
+		glTexCoord2f(tex_width,tex_offset); glVertex2f(1.0f, 1.0f);
 		// upper left
-		glTexCoord2f(0,0); glVertex2f(-1.0f, 1.0f);
+		glTexCoord2f(tex_offset,tex_offset); glVertex2f(-1.0f, 1.0f);
 		glEnd();
 		glEndList();
 		sdl.desktop.type=SCREEN_OPENGL;