Merge pull request #225 from dgkoch/dgkoch_omv2
OVR_multiview/2 clarifications
diff --git a/extensions/OVR/OVR_multiview.txt b/extensions/OVR/OVR_multiview.txt
index 90f192b..5dd1073 100644
--- a/extensions/OVR/OVR_multiview.txt
+++ b/extensions/OVR/OVR_multiview.txt
@@ -36,8 +36,8 @@
Version
- Last Modified Date: July 25, 2018
- Revision: 5
+ Last Modified Date: October 19, 2018
+ Revision: 6
Number
@@ -48,9 +48,12 @@
OpenGL 3.0 or OpenGL ES 3.0 is required.
- This extensions is written against the OpenGL ES 3.2 (November 3, 2016)
+ This extension is written against the OpenGL ES 3.2 (November 3, 2016)
specification and the OpenGL 4.6 (Core Profile) (July 30, 2017)
+ This extension is written against the OpenGL ES Shading Language 3.00.04
+ specification.
+
This extension interacts with OpenGL 3.3, ARB_timer_query, and
EXT_disjoint_timer_query.
@@ -341,6 +344,13 @@
#extension GL_OVR_multiview : <behavior>
+ where <behavior> is as specified in section 3.5.
+
+ A new preprocessor #define is added to the OpenGL ES Shading Language:
+
+ #define GL_OVR_multiview 1
+
+
In section 4.3.8.1 "Input Layout Qualifiers":
Insert a paragraph before the final one ("Fragment shaders cannot ..."):
@@ -779,4 +789,5 @@
of OES_geometry_shader and OES_tessellation_shader to interop.
Clarify what happens when transform feedback is paused.
5 07/25/18 oetuaho Fix off-by-one issue in baseViewIndex + numViews check.
+ 6 10/19/18 dgkoch Add standard boiler plate shader extension language.
diff --git a/extensions/OVR/OVR_multiview2.txt b/extensions/OVR/OVR_multiview2.txt
index 91f6568..bef4431 100644
--- a/extensions/OVR/OVR_multiview2.txt
+++ b/extensions/OVR/OVR_multiview2.txt
@@ -16,6 +16,7 @@
Jan Paul van Waveren, Oculus
Jan-Harald Fredriksen, ARM
Sam Holmes, Qualcomm
+ Daniel Koch, NVIDIA
Status
@@ -23,8 +24,8 @@
Version
- Last Modified Date: Mar 18, 2015
- Author Revision: 0.4
+ Last Modified Date: October 19, 2018
+ Author Revision: 0.5
Number
@@ -35,7 +36,10 @@
OpenGL 3.0 or OpenGL ES 3.0 is required.
- Requires extension OVR_multiview to be implemented.
+ This extension is written against the OpenGL ES Shading Language 3.00.04
+ specification.
+
+ This extension requires OVR_multiview.
Overview
@@ -57,14 +61,43 @@
Including the following line in a shader can be used to control the language
features described in this extension:
- #extension GL_OVR_multiview2
+ #extension GL_OVR_multiview2 : <behavior>
+
+ where <behavior> is as specified in section 3.5.
+
+ A new preprocessor #define is added to the OpenGL ES Shading Language:
+
+ #define GL_OVR_multiview2 1
+
+ If the OVR_multiview2 extension is enabled, the OVR_multiview extension
+ is also implicitly enabled.
+
+ Modifications to Section 7.1 "Built-in Language Variables" (as modified by
+ OVR_multiview):
+
+ Delete the paragraph which states:
+
+ It is a compile- or link-time error if any output variable other
+ than gl_Position is statically dependent on gl_ViewID_OVR. If an
+ output variable other than gl_Position is dynamically dependent on
+ gl_ViewID_OVR, the values are undefined.
Errors
+ None.
+
Issues
+ (1) Does enabling GL_OVR_multiview2 automatically enable GL_OVR_multiview?
+
+ RESOLVED: Yes. This was not specified in early drafts of the extension,
+ but this is the behavior of multiple implementations.
+
Revision History
Rev. Date Author Changes
---- -------- -------- -----------------------------------------
0.1 03/18/15 cass Initial draft
+ 0.5 10/19/18 dgkoch Add standard boiler plate shader extension language.
+ Add issue 1 and clarify that this extension
+ implicitly enables OVR_multiview.
