diff --git a/basis/opengl/framebuffers/framebuffers-docs.factor b/basis/opengl/framebuffers/framebuffers-docs.factor
index c5507dcce1..6efa63d04e 100644
--- a/basis/opengl/framebuffers/framebuffers-docs.factor
+++ b/basis/opengl/framebuffers/framebuffers-docs.factor
@@ -4,32 +4,32 @@ IN: opengl.framebuffers
 
 HELP: gen-framebuffer
 { $values { "id" integer } }
-{ $description "Wrapper for " { $link glGenFramebuffersEXT } " to handle the common case of generating a single framebuffer ID." } ;
+{ $description "Wrapper for " { $link glGenFramebuffers } " to handle the common case of generating a single framebuffer ID." } ;
 
 HELP: gen-renderbuffer
 { $values { "id" integer } }
-{ $description "Wrapper for " { $link glGenRenderbuffersEXT } " to handle the common case of generating a single render buffer ID." } ;
+{ $description "Wrapper for " { $link glGenRenderbuffers } " to handle the common case of generating a single render buffer ID." } ;
 
 HELP: delete-framebuffer
 { $values { "id" integer } }
-{ $description "Wrapper for " { $link glDeleteFramebuffersEXT } " to handle the common case of deleting a single framebuffer ID." } ;
+{ $description "Wrapper for " { $link glDeleteFramebuffers } " to handle the common case of deleting a single framebuffer ID." } ;
 
 HELP: delete-renderbuffer
 { $values { "id" integer } }
-{ $description "Wrapper for " { $link glDeleteRenderbuffersEXT } " to handle the common case of deleting a single render buffer ID." } ;
+{ $description "Wrapper for " { $link glDeleteRenderbuffers } " to handle the common case of deleting a single render buffer ID." } ;
 
 { gen-framebuffer delete-framebuffer } related-words
 { gen-renderbuffer delete-renderbuffer } related-words
 
 HELP: framebuffer-incomplete?
 { $values { "status/f" "The framebuffer error code, or " { $snippet "f" } " if the framebuffer is render-complete." } }
-{ $description "Checks the framebuffer currently bound by " { $link glBindFramebufferEXT } " or " { $link with-framebuffer } " to see if it is incomplete, i.e., it is not ready to be rendered to." } ;
+{ $description "Checks the framebuffer currently bound by " { $link glBindFramebuffer } " or " { $link with-framebuffer } " to see if it is incomplete, i.e., it is not ready to be rendered to." } ;
 
 HELP: check-framebuffer
-{ $description "Checks the framebuffer currently bound by " { $link glBindFramebufferEXT } " or " { $link with-framebuffer } " with " { $link framebuffer-incomplete? } ", and throws a descriptive error if the framebuffer is incomplete." } ;
+{ $description "Checks the framebuffer currently bound by " { $link glBindFramebuffer } " or " { $link with-framebuffer } " with " { $link framebuffer-incomplete? } ", and throws a descriptive error if the framebuffer is incomplete." } ;
 
 HELP: with-framebuffer
 { $values { "id" "The id of a framebuffer object." } { "quot" "a quotation" } }
-{ $description "Binds framebuffer " { $snippet "id" } " in the dynamic extent of " { $snippet "quot" } ", restoring the window framebuffer when finished." } ;
+{ $description "Binds framebuffer " { $snippet "id" } " for drawing in the dynamic extent of " { $snippet "quot" } ", restoring the window framebuffer when finished." } ;
 
-ABOUT: "gl-utilities"
\ No newline at end of file
+ABOUT: "gl-utilities"
diff --git a/basis/opengl/framebuffers/framebuffers.factor b/basis/opengl/framebuffers/framebuffers.factor
index f3ed8d320d..d3e6d7e25a 100644
--- a/basis/opengl/framebuffers/framebuffers.factor
+++ b/basis/opengl/framebuffers/framebuffers.factor
@@ -5,30 +5,30 @@ alien.c-types ;
 IN: opengl.framebuffers
 
 : gen-framebuffer ( -- id )
-    [ glGenFramebuffersEXT ] (gen-gl-object) ;
+    [ glGenFramebuffers ] (gen-gl-object) ;
 : gen-renderbuffer ( -- id )
-    [ glGenRenderbuffersEXT ] (gen-gl-object) ;
+    [ glGenRenderbuffers ] (gen-gl-object) ;
 
 : delete-framebuffer ( id -- )
-    [ glDeleteFramebuffersEXT ] (delete-gl-object) ;
+    [ glDeleteFramebuffers ] (delete-gl-object) ;
 : delete-renderbuffer ( id -- )
-    [ glDeleteRenderbuffersEXT ] (delete-gl-object) ;
+    [ glDeleteRenderbuffers ] (delete-gl-object) ;
 
 : framebuffer-incomplete? ( -- status/f )
-    GL_FRAMEBUFFER_EXT glCheckFramebufferStatusEXT
-    dup GL_FRAMEBUFFER_COMPLETE_EXT = f rot ? ;
+    GL_DRAW_FRAMEBUFFER glCheckFramebufferStatus
+    dup GL_FRAMEBUFFER_COMPLETE = f rot ? ;
 
 : framebuffer-error ( status -- * )
     { 
-        { GL_FRAMEBUFFER_COMPLETE_EXT [ "framebuffer complete" ] }
-        { GL_FRAMEBUFFER_UNSUPPORTED_EXT [ "framebuffer configuration unsupported" ] }
-        { GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT [ "framebuffer incomplete (incomplete attachment)" ] }
-        { GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT [ "framebuffer incomplete (missing attachment)" ] }
+        { GL_FRAMEBUFFER_COMPLETE [ "framebuffer complete" ] }
+        { GL_FRAMEBUFFER_UNSUPPORTED [ "framebuffer configuration unsupported" ] }
+        { GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT [ "framebuffer incomplete (incomplete attachment)" ] }
+        { GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT [ "framebuffer incomplete (missing attachment)" ] }
         { GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT [ "framebuffer incomplete (dimension mismatch)" ] }
         { GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT [ "framebuffer incomplete (format mismatch)" ] }
-        { GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT [ "framebuffer incomplete (draw buffer(s) have no attachment)" ] }
-        { GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT [ "framebuffer incomplete (read buffer has no attachment)" ] }
-        { GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT [ "framebuffer incomplete (multisample counts don't match)" ] }
+        { GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER [ "framebuffer incomplete (draw buffer(s) have no attachment)" ] }
+        { GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER [ "framebuffer incomplete (read buffer has no attachment)" ] }
+        { GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE [ "framebuffer incomplete (multisample counts don't match)" ] }
         [ drop gl-error "unknown framebuffer error" ]
     } case throw ;
 
@@ -36,19 +36,19 @@ IN: opengl.framebuffers
     framebuffer-incomplete? [ framebuffer-error ] when* ;
 
 : with-framebuffer ( id quot -- )
-    [ GL_FRAMEBUFFER_EXT swap glBindFramebufferEXT ] dip
-    [ GL_FRAMEBUFFER_EXT 0 glBindFramebufferEXT ] [ ] cleanup ; inline
+    [ GL_DRAW_FRAMEBUFFER swap glBindFramebuffer ] dip
+    [ GL_DRAW_FRAMEBUFFER 0 glBindFramebuffer ] [ ] cleanup ; inline
 
 : with-draw-read-framebuffers ( draw-id read-id quot -- )
     [
-        [ GL_DRAW_FRAMEBUFFER_EXT swap glBindFramebufferEXT ]
-        [ GL_READ_FRAMEBUFFER_EXT swap glBindFramebufferEXT ] bi*
+        [ GL_DRAW_FRAMEBUFFER swap glBindFramebuffer ]
+        [ GL_READ_FRAMEBUFFER swap glBindFramebuffer ] bi*
     ] dip
     [ 
-        GL_DRAW_FRAMEBUFFER_EXT 0 glBindFramebufferEXT
-        GL_READ_FRAMEBUFFER_EXT 0 glBindFramebufferEXT
+        GL_DRAW_FRAMEBUFFER 0 glBindFramebuffer
+        GL_READ_FRAMEBUFFER 0 glBindFramebuffer
     ] [ ] cleanup ; inline
 
 : framebuffer-attachment ( attachment -- id )
-    GL_FRAMEBUFFER_EXT swap GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
-    0 <uint> [ glGetFramebufferAttachmentParameterivEXT ] keep *uint ;
+    GL_FRAMEBUFFER swap GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME
+    0 <uint> [ glGetFramebufferAttachmentParameteriv ] keep *uint ;
diff --git a/basis/opengl/opengl-docs.factor b/basis/opengl/opengl-docs.factor
index b773833280..1e4112d5d4 100644
--- a/basis/opengl/opengl-docs.factor
+++ b/basis/opengl/opengl-docs.factor
@@ -45,7 +45,7 @@ HELP: bind-texture-unit
 { $description "Binds texture " { $snippet "id" } " to texture target " { $snippet "target" } " of texture unit " { $snippet "unit" } ". Equivalent to " { $snippet "unit glActiveTexture target id glBindTexture" } "." } ;
 
 HELP: set-draw-buffers
-{ $values { "buffers" "A sequence of buffer words (e.g. " { $snippet "GL_BACK" } ", " { $snippet "GL_COLOR_ATTACHMENT0_EXT" } ")"} }
+{ $values { "buffers" "A sequence of buffer words (e.g. " { $snippet "GL_BACK" } ", " { $snippet "GL_COLOR_ATTACHMENT0" } ")"} }
 { $description "Wrapper for " { $link glDrawBuffers } ". Sets up the buffers named in the sequence for simultaneous drawing." } ;
 
 HELP: do-attribs
diff --git a/basis/opengl/shaders/shaders.factor b/basis/opengl/shaders/shaders.factor
index a946fd16f4..1561138522 100755
--- a/basis/opengl/shaders/shaders.factor
+++ b/basis/opengl/shaders/shaders.factor
@@ -65,7 +65,7 @@ PREDICATE: fragment-shader < gl-shader (fragment-shader?) ;
     glCreateProgram 
     [
         [ swap [ glAttachShader ] with each ]
-        [ swap [ first2 swap glBindFragDataLocationEXT ] with each ] bi-curry bi*
+        [ swap [ first2 swap glBindFragDataLocation ] with each ] bi-curry bi*
     ]
     [ glLinkProgram ]
     [ ] tri
diff --git a/basis/opengl/textures/textures-tests.factor b/basis/opengl/textures/textures-tests.factor
index 220d2e8e87..895298fe54 100644
--- a/basis/opengl/textures/textures-tests.factor
+++ b/basis/opengl/textures/textures-tests.factor
@@ -26,14 +26,14 @@ ${ GL_RGBA8 GL_BGRA GL_UNSIGNED_BYTE }
 ${ GL_RGBA8 GL_BGRA GL_UNSIGNED_INT_8_8_8_8_REV }
 [ ARGB ubyte-components (image-format) ] unit-test
 
-${ GL_RGBA32F_ARB GL_RGBA GL_FLOAT }
+${ GL_RGBA32F GL_RGBA GL_FLOAT }
 [ RGBA float-components (image-format) ] unit-test
 
-${ GL_RGBA32UI_EXT GL_BGRA_INTEGER_EXT GL_UNSIGNED_INT }
+${ GL_RGBA32UI GL_BGRA_INTEGER GL_UNSIGNED_INT }
 [ BGRA uint-integer-components (image-format) ] unit-test
 
-${ GL_RGB9_E5_EXT GL_RGB GL_UNSIGNED_INT_5_9_9_9_REV_EXT }
+${ GL_RGB9_E5 GL_RGB GL_UNSIGNED_INT_5_9_9_9_REV }
 [ BGR u-9-9-9-e5-components (image-format) ] unit-test
 
-${ GL_R11F_G11F_B10F_EXT GL_RGB GL_UNSIGNED_INT_10F_11F_11F_REV_EXT }
+${ GL_R11F_G11F_B10F GL_RGB GL_UNSIGNED_INT_10F_11F_11F_REV }
 [ BGR float-11-11-10-components (image-format) ] unit-test
diff --git a/extra/bunny/outlined/outlined.factor b/extra/bunny/outlined/outlined.factor
index 8856032488..858689738f 100755
--- a/extra/bunny/outlined/outlined.factor
+++ b/extra/bunny/outlined/outlined.factor
@@ -120,14 +120,13 @@ TUPLE: bunny-outlined
     framebuffer framebuffer-dim ;
 
 : outlining-supported? ( -- ? )
-    "2.0" {
+    "3.0" {
         "GL_ARB_shader_objects"
         "GL_ARB_draw_buffers"
         "GL_ARB_multitexture"
-    } has-gl-version-or-extensions? {
         "GL_EXT_framebuffer_object"
         "GL_ARB_texture_float"
-    } has-gl-extensions? and ;
+    } has-gl-version-or-extensions? ;
 
 : pass1-program ( -- program )
     vertex-shader-source <vertex-shader> check-gl-shader
@@ -154,14 +153,14 @@ TUPLE: bunny-outlined
     GL_TEXTURE_2D 0 iformat dim first2 0 xformat GL_UNSIGNED_BYTE f glTexImage2D ;
 
 :: (attach-framebuffer-texture) ( texture attachment -- )
-    GL_FRAMEBUFFER_EXT attachment GL_TEXTURE_2D texture 0 glFramebufferTexture2DEXT
+    GL_DRAW_FRAMEBUFFER attachment GL_TEXTURE_2D texture 0 glFramebufferTexture2D
     gl-error ;
 
 : (make-framebuffer) ( color-texture normal-texture depth-texture -- framebuffer )
     3array gen-framebuffer dup [
-        swap GL_COLOR_ATTACHMENT0_EXT
-             GL_COLOR_ATTACHMENT1_EXT
-             GL_DEPTH_ATTACHMENT_EXT 3array [ (attach-framebuffer-texture) ] 2each
+        swap GL_COLOR_ATTACHMENT0
+             GL_COLOR_ATTACHMENT1
+             GL_DEPTH_ATTACHMENT 3array [ (attach-framebuffer-texture) ] 2each
         check-framebuffer
     ] with-framebuffer ;
 
@@ -182,8 +181,8 @@ MACRO: (framebuffer-texture>>draw) ( iformat xformat setter -- )
 : (make-framebuffer-textures) ( draw dim -- draw color normal depth )
     {
         [ drop ]
-        [ GL_RGBA16F_ARB GL_RGBA [ >>color-texture  ] (framebuffer-texture>>draw) ]
-        [ GL_RGBA16F_ARB GL_RGBA [ >>normal-texture ] (framebuffer-texture>>draw) ]
+        [ GL_RGBA16F GL_RGBA [ >>color-texture  ] (framebuffer-texture>>draw) ]
+        [ GL_RGBA16F GL_RGBA [ >>normal-texture ] (framebuffer-texture>>draw) ]
         [
             GL_DEPTH_COMPONENT32 GL_DEPTH_COMPONENT
             [ >>depth-texture ] (framebuffer-texture>>draw)
@@ -202,17 +201,17 @@ MACRO: (framebuffer-texture>>draw) ( iformat xformat setter -- )
     [ drop ] [ remake-framebuffer ] if ;
 
 : clear-framebuffer ( -- )
-    GL_COLOR_ATTACHMENT0_EXT glDrawBuffer
+    GL_COLOR_ATTACHMENT0 glDrawBuffer
     0.15 0.15 0.15 1.0 glClearColor
     GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT bitor glClear
-    GL_COLOR_ATTACHMENT1_EXT glDrawBuffer
+    GL_COLOR_ATTACHMENT1 glDrawBuffer
     0.0 0.0 0.0 0.0 glClearColor
     GL_COLOR_BUFFER_BIT glClear ;
 
 : (pass1) ( geom draw -- )
     dup framebuffer>> [
         clear-framebuffer
-        { GL_COLOR_ATTACHMENT0_EXT GL_COLOR_ATTACHMENT1_EXT } set-draw-buffers
+        { GL_COLOR_ATTACHMENT0 GL_COLOR_ATTACHMENT1 } set-draw-buffers
         pass1-program>> (draw-cel-shaded-bunny)
     ] with-framebuffer ;
 
diff --git a/extra/spheres/spheres.factor b/extra/spheres/spheres.factor
index b07b7a5ad1..b7431caef8 100755
--- a/extra/spheres/spheres.factor
+++ b/extra/spheres/spheres.factor
@@ -148,14 +148,14 @@ M: spheres-world distance-step
 
 : (make-reflection-depthbuffer) ( -- depthbuffer )
     gen-renderbuffer [
-        GL_RENDERBUFFER_EXT swap glBindRenderbufferEXT
-        GL_RENDERBUFFER_EXT GL_DEPTH_COMPONENT32 (reflection-dim) glRenderbufferStorageEXT
+        GL_RENDERBUFFER swap glBindRenderbuffer
+        GL_RENDERBUFFER GL_DEPTH_COMPONENT32 (reflection-dim) glRenderbufferStorage
     ] keep ;
 
 : (make-reflection-framebuffer) ( depthbuffer -- framebuffer )
     gen-framebuffer dup [
-        swap [ GL_FRAMEBUFFER_EXT GL_DEPTH_ATTACHMENT_EXT GL_RENDERBUFFER_EXT ] dip
-        glFramebufferRenderbufferEXT
+        swap [ GL_DRAW_FRAMEBUFFER GL_DEPTH_ATTACHMENT GL_RENDERBUFFER ] dip
+        glFramebufferRenderbuffer
     ] with-framebuffer ;
 
 : (plane-program) ( -- program )
@@ -244,9 +244,9 @@ M: spheres-world pref-dim*
 
 : (reflection-face) ( gadget face -- )
     swap reflection-texture>> [
-        GL_FRAMEBUFFER_EXT
-        GL_COLOR_ATTACHMENT0_EXT
-    ] 2dip 0 glFramebufferTexture2DEXT
+        GL_DRAW_FRAMEBUFFER
+        GL_COLOR_ATTACHMENT0
+    ] 2dip 0 glFramebufferTexture2D
     check-framebuffer ;
 
 : (draw-reflection-texture) ( gadget -- )