This extension adds a single function to query the current GPU timestamp, just like glGetInteger64v(GL_TIMESTAMP, ×tamp). This function is needed to complete the implementation of GOOGLE_display_timing, which needs to be able to correlate GPU and CPU timestamps.
v2: Adopt Jason Ekstrand's coding conventions
Declare variables at first use, eliminate extra whitespace between types and names. Wrap lines to 80 columns.
Add extension to list in alphabetical order
Suggested-by: Jason Ekstrand jason.ekstrand@intel.com
Signed-off-by: Keith Packard keithp@keithp.com --- include/vulkan/vk_mesa_query_timestamp.h | 41 ++++++++++++++++++++++++ src/vulkan/registry/vk.xml | 15 +++++++++ 2 files changed, 56 insertions(+) create mode 100644 include/vulkan/vk_mesa_query_timestamp.h
diff --git a/include/vulkan/vk_mesa_query_timestamp.h b/include/vulkan/vk_mesa_query_timestamp.h new file mode 100644 index 00000000000..4e0b50cb9cc --- /dev/null +++ b/include/vulkan/vk_mesa_query_timestamp.h @@ -0,0 +1,41 @@ +/* + * Copyright © 2018 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#ifndef __VK_MESA_QUERY_TIMESTAMP_H__ +#define __VK_MESA_QUERY_TIMESTAMP_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +typedef VkResult (VKAPI_PTR *PFN_vkQueryCurrentTimestampMESA)( + VkDevice device, uint64_t *timestamp); + +VKAPI_ATTR VkResult VKAPI_CALL vkQueryCurrentTimestampMESA( + VkDevice device, uint64_t *timestamp); + +#ifdef __cplusplus +} +#endif + +#endif /* __VK_MESA_QUERY_TIMESTAMP_H__ */ + diff --git a/src/vulkan/registry/vk.xml b/src/vulkan/registry/vk.xml index 7018bbe8421..3a5cecdc8e3 100644 --- a/src/vulkan/registry/vk.xml +++ b/src/vulkan/registry/vk.xml @@ -6102,6 +6102,11 @@ server. <param><type>uint32_t</type> <name>maxDrawCount</name></param> <param><type>uint32_t</type> <name>stride</name></param> </command> + <command> + <proto><type>VkResult</type> <name>vkQueryCurrentTimestampMESA</name></proto> + <param><type>VkDevice</type> <name>device</name></param> + <param><type>uint64_t</type>* <name>pTimestamp</name></param> + </command> </commands>
<feature api="vulkan" name="VK_VERSION_1_0" number="1.0" comment="Vulkan core API interface definitions"> @@ -8826,5 +8831,15 @@ server. <enum value=""VK_KHR_extension_211"" name="VK_KHR_EXTENSION_211_EXTENSION_NAME"/> </require> </extension> + <extension name="VK_MESA_query_timestamp" number="212" + type="device" author="MESA" + contact="Keith Packard @keithp" + supported="vulkan"> + <require> + <enum value="1" name="VK_MESA_QUERY_TIMESTAMP_SPEC_VERSION"/> + <enum value=""VK_MESA_query_timestamp"" name="VK_MESA_QUERY_TIMESTAMP_NAME"/> + <command name="vkQueryCurrentTimestampMESA"/> + </require> + </extension> </extensions> </registry>