Merge pull request #321 from dgkoch/dgkoch_asc5
Add SPIR-V mapping for ARB_shader_clock
diff --git a/extensions/ARB/ARB_shader_clock.txt b/extensions/ARB/ARB_shader_clock.txt
index 7f7b085..c6bca47 100644
--- a/extensions/ARB/ARB_shader_clock.txt
+++ b/extensions/ARB/ARB_shader_clock.txt
@@ -15,6 +15,7 @@
Timothy Lottes, AMD
Graham Sellers, AMD
Daniel Rakos, AMD
+ Daniel Koch, NVIDIA
Notice
@@ -38,8 +39,8 @@
Version
- Last Modified Date: 06/17/2015
- Revision: 4
+ Last Modified Date: 10/29/2019
+ Revision: 5
Number
@@ -58,6 +59,16 @@
counter which may be used to derive local timing information within
a single shader invocation.
+ Mapping to SPIR-V
+ -----------------
+
+ For informational purposes (non-specification), the following is an
+ expected way for an implementation to map GLSL constructs to SPIR-V
+ constructs:
+
+ clock2x32ARB -> OpReadClockKHR with a Scope of Subgroup, Result type of uvec2
+ clockARB -> OpReadClockKHR with a Scope of Subgroup, Result type of uitn64_t
+
New Procedures and Functions
None.
@@ -134,3 +145,4 @@
2 04/20/2015 tlottes Now uint64, noted code motion barrier.
3 04/22/2015 gsellers Add clock2x32ARB. Add interaction with gpu_shader_64.
4 06/17/2015 gsellers General tidyment. Add issue 2.
+ 5 10/28/2019 dgkoch Add mapping to SPIR-V section.
