Rename GLES2 driver to OpenGL to prepare for the upgrade to GLES3

- Use lowercase driver names for the `--rendering-driver`
  command line argument.

3 files changed, 9 insertions, 9 deletions

diff --git a/doc/classes/Environment.xml b/doc/classes/Environment.xml
index 57f6e9547a..88c4689b5f 100644
--- a/doc/classes/Environment.xml
+++ b/doc/classes/Environment.xml
@@ -128,10 +128,10 @@
 			The bleed scale of the HDR glow.
 		</member>
 		<member name="glow_hdr_threshold" type="float" setter="set_glow_hdr_bleed_threshold" getter="get_glow_hdr_bleed_threshold" default="1.0">
-			The lower threshold of the HDR glow. When using the GLES2 renderer (which doesn't support HDR), this needs to be below [code]1.0[/code] for glow to be visible. A value of [code]0.9[/code] works well in this case.
+			The lower threshold of the HDR glow. When using the OpenGL renderer (which doesn't support HDR), this needs to be below [code]1.0[/code] for glow to be visible. A value of [code]0.9[/code] works well in this case.
 		</member>
 		<member name="glow_intensity" type="float" setter="set_glow_intensity" getter="get_glow_intensity" default="0.8">
-			The overall brightness multiplier of the glow effect. When using the GLES2 renderer, this should be increased to 1.5 to compensate for the lack of HDR rendering.
+			The overall brightness multiplier of the glow effect. When using the OpenGL renderer, this should be increased to 1.5 to compensate for the lack of HDR rendering.
 		</member>
 		<member name="glow_levels/1" type="float" setter="set_glow_level" getter="get_glow_level" default="0.0">
 			The intensity of the 1st level of glow. This is the most "local" level (least blurry).
@@ -160,7 +160,7 @@
 			If [code]true[/code], glow levels will be normalized so that summed together their intensities equal [code]1.0[/code].
 		</member>
 		<member name="glow_strength" type="float" setter="set_glow_strength" getter="get_glow_strength" default="1.0">
-			The strength of the glow effect. This applies as the glow is blurred across the screen and increases the distance and intensity of the blur. When using the GLES2 renderer, this should be increased to 1.3 to compensate for the lack of HDR rendering.
+			The strength of the glow effect. This applies as the glow is blurred across the screen and increases the distance and intensity of the blur. When using the OpenGL renderer, this should be increased to 1.3 to compensate for the lack of HDR rendering.
 		</member>
 		<member name="reflected_light_source" type="int" setter="set_reflection_source" getter="get_reflection_source" enum="Environment.ReflectionSource" default="0">
 		</member>
diff --git a/doc/classes/NinePatchRect.xml b/doc/classes/NinePatchRect.xml
index 77fd9165bb..636ed368d1 100644
--- a/doc/classes/NinePatchRect.xml
+++ b/doc/classes/NinePatchRect.xml
@@ -68,11 +68,11 @@
 		</constant>
 		<constant name="AXIS_STRETCH_MODE_TILE" value="1" enum="AxisStretchMode">
 			Repeats the center texture across the NinePatchRect. This won't cause any visible distortion. The texture must be seamless for this to work without displaying artifacts between edges.
-			[b]Note:[/b] Only supported when using the GLES3 renderer. When using the GLES2 renderer, this will behave like [constant AXIS_STRETCH_MODE_STRETCH].
+			[b]Note:[/b] Only supported when using the Vulkan renderer. When using the OpenGL renderer, this will behave like [constant AXIS_STRETCH_MODE_STRETCH].
 		</constant>
 		<constant name="AXIS_STRETCH_MODE_TILE_FIT" value="2" enum="AxisStretchMode">
 			Repeats the center texture across the NinePatchRect, but will also stretch the texture to make sure each tile is visible in full. This may cause the texture to be distorted, but less than [constant AXIS_STRETCH_MODE_STRETCH]. The texture must be seamless for this to work without displaying artifacts between edges.
-			[b]Note:[/b] Only supported when using the GLES3 renderer. When using the GLES2 renderer, this will behave like [constant AXIS_STRETCH_MODE_STRETCH].
+			[b]Note:[/b] Only supported when using the Vulkan renderer. When using the OpenGL renderer, this will behave like [constant AXIS_STRETCH_MODE_STRETCH].
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/OS.xml b/doc/classes/OS.xml
index 15cc7b9b65..cc845cc139 100644
--- a/doc/classes/OS.xml
+++ b/doc/classes/OS.xml
@@ -455,12 +455,12 @@
 		</member>
 	</members>
 	<constants>
-		<constant name="VIDEO_DRIVER_GLES2" value="0" enum="VideoDriver">
-			The GLES2 rendering backend. It uses OpenGL ES 2.0 on mobile devices, OpenGL 2.1 on desktop platforms and WebGL 1.0 on the web.
-		</constant>
-		<constant name="VIDEO_DRIVER_VULKAN" value="1" enum="VideoDriver">
+		<constant name="VIDEO_DRIVER_VULKAN" value="0" enum="VideoDriver">
 			The Vulkan rendering backend.
 		</constant>
+		<constant name="VIDEO_DRIVER_OPENGL" value="1" enum="VideoDriver">
+			The OpenGL rendering backend. It uses OpenGL ES 3.0 on mobile devices, OpenGL 3.3 on desktop platforms and WebGL 2.0 on the web.
+		</constant>
 		<constant name="DAY_SUNDAY" value="0" enum="Weekday">
 			Sunday.
 		</constant>