[Mesa-dev] [PATCH 18/21] radv: Add new VK_MESA_query_timestamp extension to radv driver

[Keith Packard]

This extension adds a single function to query the current GPU
timestamp, just like glGetInteger64v(GL_TIMESTAMP, &timestamp). This
function is needed to complete the implementation of
GOOGLE_display_timing, which needs to be able to coorelate GPU and CPU
timestamps.

Signed-off-by: Keith Packard <keithp at keithp.com>
---
 src/amd/vulkan/Makefile.am        | 3 +++
 src/amd/vulkan/meson.build        | 8 ++++----
 src/amd/vulkan/radv_device.c      | 8 ++++++++
 src/amd/vulkan/radv_extensions.py | 1 +
 4 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/amd/vulkan/Makefile.am b/src/amd/vulkan/Makefile.am
index 94ece06e99e..86dfb0265d6 100644
--- a/src/amd/vulkan/Makefile.am
+++ b/src/amd/vulkan/Makefile.am
@@ -129,12 +129,14 @@ libvulkan_radeon_la_SOURCES = $(VULKAN_GEM_FILES)
 
 vulkan_api_xml = $(top_srcdir)/src/vulkan/registry/vk.xml
 vk_android_native_buffer_xml = $(top_srcdir)/src/vulkan/registry/vk_android_native_buffer.xml
+vk_mesa_query_timestamp_xml = $(top_srcdir)/src/vulkan/registry/vk_mesa_query_timestamp.xml
 
 radv_entrypoints.c: radv_entrypoints_gen.py radv_extensions.py $(vulkan_api_xml)
 	$(MKDIR_GEN)
 	$(AM_V_GEN)$(PYTHON2) $(srcdir)/radv_entrypoints_gen.py \
 		--xml $(vulkan_api_xml) \
 		--xml $(vk_android_native_buffer_xml) \
+		--xml $(vk_mesa_query_timestamp_xml) \
 		--outdir $(builddir)
 radv_entrypoints.h: radv_entrypoints.c
 
@@ -144,6 +146,7 @@ radv_extensions.c: radv_extensions.py \
 	$(AM_V_GEN)$(PYTHON2) $(srcdir)/radv_extensions.py \
 		--xml $(vulkan_api_xml) \
 		--xml $(vk_android_native_buffer_xml) \
+		--xml $(vk_mesa_query_timestamp_xml) \
 		--out $@
 
 vk_format_table.c: vk_format_table.py \
diff --git a/src/amd/vulkan/meson.build b/src/amd/vulkan/meson.build
index 0b92a1763a1..34f578476c0 100644
--- a/src/amd/vulkan/meson.build
+++ b/src/amd/vulkan/meson.build
@@ -20,10 +20,10 @@
 
 radv_entrypoints = custom_target(
   'radv_entrypoints.[ch]',
-  input : ['radv_entrypoints_gen.py', vk_api_xml],
+  input : ['radv_entrypoints_gen.py', vk_api_xml, vk_android_native_buffer_xml, vk_mesa_query_timestamp_xml],
   output : ['radv_entrypoints.h', 'radv_entrypoints.c'],
   command : [
-    prog_python2, '@INPUT0@', '--xml', '@INPUT1@', '--outdir',
+    prog_python2, '@INPUT0@', '--xml', '@INPUT1@', '--xml', '@INPUT2@', '--xml', '@INPUT3@', '--outdir',
     meson.current_build_dir()
   ],
   depend_files : files('radv_extensions.py'),
@@ -31,10 +31,10 @@ radv_entrypoints = custom_target(
 
 radv_extensions_c = custom_target(
   'radv_extensions.c',
-  input : ['radv_extensions.py', vk_api_xml, vk_android_native_buffer_xml],
+  input : ['radv_extensions.py', vk_api_xml, vk_android_native_buffer_xml, vk_mesa_query_timestamp_xml],
   output : ['radv_extensions.c'],
   command : [
-    prog_python2, '@INPUT0@', '--xml', '@INPUT1@', '--xml', '@INPUT2@', '--out', '@OUTPUT@',
+    prog_python2, '@INPUT0@', '--xml', '@INPUT1@', '--xml', '@INPUT2@', '--xml', '@INPUT3@', '--out', '@OUTPUT@',
   ],
 )
 
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 8ae7391c891..09c5ca8edcc 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -4083,3 +4083,11 @@ radv_DebugReportMessageEXT(VkInstance _instance,
 	vk_debug_report(&instance->debug_report_callbacks, flags, objectType,
 	                object, location, messageCode, pLayerPrefix, pMessage);
 }
+
+VkResult radv_QueryCurrentTimestampMESA(VkDevice _device, uint64_t *timestamp)
+{
+	RADV_FROM_HANDLE(radv_device, device, _device);
+
+	*timestamp = device->ws->query_value(device->ws, RADEON_TIMESTAMP);
+	return VK_SUCCESS;
+}
diff --git a/src/amd/vulkan/radv_extensions.py b/src/amd/vulkan/radv_extensions.py
index 42b8d996b6a..0e7b18dc104 100644
--- a/src/amd/vulkan/radv_extensions.py
+++ b/src/amd/vulkan/radv_extensions.py
@@ -95,6 +95,7 @@ EXTENSIONS = [
     Extension('VK_AMD_draw_indirect_count',               1, True),
     Extension('VK_AMD_rasterization_order',               1, 'device->rad_info.chip_class >= VI && device->rad_info.max_se >= 2'),
     Extension('VK_AMD_shader_info',                       1, True),
+    Extension('VK_MESA_query_timestamp',                  1, True),
 ]
 
 class VkVersion:
-- 
2.15.1