[09/21] radv: Add EXT_acquire_xlib_display to radv driver

Commit Message

Keith Packard Feb. 14, 2018, 12:31 a.m. UTC

This extension adds the ability to borrow an X RandR output for
temporary use directly by a Vulkan application to the radv driver.

Signed-off-by: Keith Packard <[e-mail]>
---
 src/amd/vulkan/Makefile.am        |  7 +++++++
 src/amd/vulkan/meson.build        |  7 +++++++
 src/amd/vulkan/radv_extensions.py | 11 ++++++-----
 src/amd/vulkan/radv_wsi_display.c | 30 ++++++++++++++++++++++++++++++
 4 files changed, 50 insertions(+), 5 deletions(-)

Patch

diff --git a/src/amd/vulkan/Makefile.am b/src/amd/vulkan/Makefile.am
index 061b8144b88..94ece06e99e 100644
--- a/src/amd/vulkan/Makefile.am
+++ b/src/amd/vulkan/Makefile.am
@@ -81,7 +81,14 @@  AM_CPPFLAGS += \
 	-DVK_USE_PLATFORM_DISPLAY_KHR
 
 VULKAN_SOURCES += $(VULKAN_WSI_DISPLAY_FILES)
+endif
+
+if HAVE_XLIB_LEASE
+AM_CPPFLAGS += \
+	-DVK_USE_PLATFORM_XLIB_XRANDR_EXT \
+	$(XCB_RANDR_CFLAGS)
 
+VULKAN_LIB_DEPS += $(XCB_RANDR_LIBS)
 endif
 
 if HAVE_PLATFORM_X11
diff --git a/src/amd/vulkan/meson.build b/src/amd/vulkan/meson.build
index b7bb1075e7d..0b92a1763a1 100644
--- a/src/amd/vulkan/meson.build
+++ b/src/amd/vulkan/meson.build
@@ -119,6 +119,13 @@  if with_platform_display
   libradv_files += files('radv_wsi_display.c')
 endif
 
+if with_xlib_lease
+  radv_deps += dep_xcb_xrandr
+  radv_flags += [
+    '-DVK_USE_PLATFORM_XLIB_XRANDR_EXT',
+  ]
+endif
+
 libvulkan_radeon = shared_library(
   'vulkan_radeon',
   [libradv_files, radv_entrypoints, radv_extensions_c, vk_format_table_c],
diff --git a/src/amd/vulkan/radv_extensions.py b/src/amd/vulkan/radv_extensions.py
index b04b9bf87b0..df3325d47d4 100644
--- a/src/amd/vulkan/radv_extensions.py
+++ b/src/amd/vulkan/radv_extensions.py
@@ -83,6 +83,7 @@  EXTENSIONS = [
     Extension('VK_KHR_xlib_surface',                      6, 'VK_USE_PLATFORM_XLIB_KHR'),
     Extension('VK_KHR_display',                          23, 'VK_USE_PLATFORM_DISPLAY_KHR'),
     Extension('VK_EXT_direct_mode_display',               1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
+    Extension('VK_EXT_acquire_xlib_display',              1, 'VK_USE_PLATFORM_XLIB_XRANDR_EXT'),
     Extension('VK_KHX_multiview',                         1, '!ANDROID'),
     Extension('VK_EXT_debug_report',                      9, True),
     Extension('VK_EXT_discard_rectangles',                1, True),
@@ -170,12 +171,12 @@  _TEMPLATE = Template(COPYRIGHT + """
 #include "vk_util.h"
 
 /* Convert the VK_USE_PLATFORM_* defines to booleans */
-%for platform in ['ANDROID', 'WAYLAND', 'XCB', 'XLIB', 'DISPLAY']:
-#ifdef VK_USE_PLATFORM_${platform}_KHR
-#   undef VK_USE_PLATFORM_${platform}_KHR
-#   define VK_USE_PLATFORM_${platform}_KHR true
+%for platform in ['ANDROID_KHR', 'WAYLAND_KHR', 'XCB_KHR', 'XLIB_KHR', 'DISPLAY_KHR', 'XLIB_XRANDR_EXT']:
+#ifdef VK_USE_PLATFORM_${platform}
+#   undef VK_USE_PLATFORM_${platform}
+#   define VK_USE_PLATFORM_${platform} true
 #else
-#   define VK_USE_PLATFORM_${platform}_KHR false
+#   define VK_USE_PLATFORM_${platform} false
 #endif
 %endfor
 
diff --git a/src/amd/vulkan/radv_wsi_display.c b/src/amd/vulkan/radv_wsi_display.c
index deaf61ce0df..d7a5956ad97 100644
--- a/src/amd/vulkan/radv_wsi_display.c
+++ b/src/amd/vulkan/radv_wsi_display.c
@@ -152,3 +152,33 @@  radv_ReleaseDisplayEXT(VkPhysicalDevice physical_device,
 				   &pdevice->wsi_device,
 				   display);
 }
+
+#ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
+VkResult
+radv_AcquireXlibDisplayEXT(VkPhysicalDevice     physical_device,
+			   Display              *dpy,
+			   VkDisplayKHR         display)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_acquire_xlib_display(physical_device,
+					&pdevice->wsi_device,
+					dpy,
+					display);
+}
+
+VkResult
+radv_GetRandROutputDisplayEXT(VkPhysicalDevice  physical_device,
+			      Display           *dpy,
+			      RROutput          output,
+			      VkDisplayKHR      *display)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_get_randr_output_display(physical_device,
+					    &pdevice->wsi_device,
+					    dpy,
+					    output,
+					    display);
+}
+#endif /* VK_USE_PLATFORM_XLIB_XRANDR_EXT */