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egl: Support NV_context_priority_realtime

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This extension extends EGL_IMG_context_priority with a new
EGL_CONTEXT_PRIORITY_REALTIME_NV attribute.

Effectively, Gallium drivers would need to implement
PIPE_CONTEXT_REALTIME_PRIORITY flag in context_create and expose
PIPE_CONTEXT_PRIORITY_REALTIME on PIPE_CAP_CONTEXT_PRIORITY_MASK to
enable this extension.

Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30989>
This commit is contained in:
Mary Guillemard 2024-09-03 13:23:19 +02:00 • committed by Marge Bot
parent d12950539c
commit 43db7e5323
9 changed files with 50 additions and 6 deletions
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15
src/egl/drivers/dri2/egl_dri2.c
View file

@ -674,6 +674,18 @@ dri2_setup_screen(_EGLDisplay *disp)
disp->Extensions.IMG_context_priority =
dri_get_screen_param(dri2_dpy->dri_screen_render_gpu, PIPE_CAP_CONTEXT_PRIORITY_MASK);
/**
* FIXME: Some drivers currently misreport what context priorities the user
* can use and fail context creation. This cause issues on Android where the
* display process would try to use realtime priority. This is also a spec
* violation for IMG_context_priority.
*/
#ifndef HAVE_ANDROID_PLATFORM
disp->Extensions.NV_context_priority_realtime =
disp->Extensions.IMG_context_priority &
(1 << __EGL_CONTEXT_PRIORITY_REALTIME_BIT);
#endif
disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
if (pscreen->is_format_supported(pscreen, PIPE_FORMAT_B8G8R8A8_SRGB,
@ -1145,6 +1157,9 @@ dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
unsigned val;
switch (dri2_ctx->base.ContextPriority) {
case EGL_CONTEXT_PRIORITY_REALTIME_NV:
val = __DRI_CTX_PRIORITY_REALTIME;
break;
case EGL_CONTEXT_PRIORITY_HIGH_IMG:
val = __DRI_CTX_PRIORITY_HIGH;
break;

3
src/egl/drivers/haiku/egl_haiku.cpp
View file

@ -361,6 +361,9 @@ haiku_initialize_impl(_EGLDisplay *disp, void *platformDisplay)
disp->Extensions.IMG_context_priority =
hgl_dpy->disp->fscreen->screen->get_param(hgl_dpy->disp->fscreen->screen,
PIPE_CAP_CONTEXT_PRIORITY_MASK);
disp->Extensions.NV_context_priority_realtime =
disp->Extensions.IMG_context_priority &
(1 << __EGL_CONTEXT_PRIORITY_REALTIME_BIT);
disp->Extensions.EXT_pixel_format_float = EGL_TRUE;

3
src/egl/drivers/wgl/egl_wgl.c
View file

@ -271,6 +271,9 @@ wgl_initialize_impl(_EGLDisplay *disp, HDC hdc)
/* Report back to EGL the bitmask of priorities supported */
disp->Extensions.IMG_context_priority = wgl_dpy->screen->get_param(
wgl_dpy->screen, PIPE_CAP_CONTEXT_PRIORITY_MASK);
disp->Extensions.NV_context_priority_realtime =
disp->Extensions.IMG_context_priority &
(1 << __EGL_CONTEXT_PRIORITY_REALTIME_BIT);
disp->Extensions.EXT_pixel_format_float = EGL_TRUE;

1
src/egl/main/eglapi.c
View file

@ -606,6 +606,7 @@ _eglCreateExtensionsString(_EGLDisplay *disp)
_EGL_CHECK_EXTENSION(NOK_swap_region);
_EGL_CHECK_EXTENSION(NOK_texture_from_pixmap);
_EGL_CHECK_EXTENSION(NV_context_priority_realtime);
_EGL_CHECK_EXTENSION(NV_post_sub_buffer);
_EGL_CHECK_EXTENSION(WL_bind_wayland_display);

6
src/egl/main/eglcontext.c
View file

@ -413,6 +413,12 @@ _eglParseContextAttribList(_EGLContext *ctx, _EGLDisplay *disp,
int bit;
switch (val) {
case EGL_CONTEXT_PRIORITY_REALTIME_NV:
if (disp->Extensions.NV_context_priority_realtime)
bit = __EGL_CONTEXT_PRIORITY_REALTIME_BIT;
else
bit = -1;
break;
case EGL_CONTEXT_PRIORITY_HIGH_IMG:
bit = __EGL_CONTEXT_PRIORITY_HIGH_BIT;
break;

8
src/egl/main/egldisplay.h
View file

@ -117,9 +117,10 @@ struct _egl_extensions {
EGLBoolean EXT_swap_buffers_with_damage;
unsigned int IMG_context_priority;
#define __EGL_CONTEXT_PRIORITY_LOW_BIT 0
#define __EGL_CONTEXT_PRIORITY_MEDIUM_BIT 1
#define __EGL_CONTEXT_PRIORITY_HIGH_BIT 2
#define __EGL_CONTEXT_PRIORITY_LOW_BIT 0
#define __EGL_CONTEXT_PRIORITY_MEDIUM_BIT 1
#define __EGL_CONTEXT_PRIORITY_HIGH_BIT 2
#define __EGL_CONTEXT_PRIORITY_REALTIME_BIT 3
EGLBoolean KHR_cl_event2;
EGLBoolean KHR_config_attribs;
@ -153,6 +154,7 @@ struct _egl_extensions {
EGLBoolean NOK_texture_from_pixmap;
EGLBoolean NV_post_sub_buffer;
EGLBoolean NV_context_priority_realtime;
EGLBoolean WL_bind_wayland_display;
EGLBoolean WL_create_wayland_buffer_from_image;

3
src/gallium/frontends/dri/dri_context.c
View file

@ -136,6 +136,9 @@ dri_create_context(struct dri_screen *screen,
case __DRI_CTX_PRIORITY_HIGH:
attribs.context_flags |= PIPE_CONTEXT_HIGH_PRIORITY;
break;
case __DRI_CTX_PRIORITY_REALTIME:
attribs.context_flags |= PIPE_CONTEXT_REALTIME_PRIORITY;
break;
default:
break;
}

1
src/gallium/include/mesa_interface.h
View file

@ -1076,6 +1076,7 @@ struct __DRIdri2LoaderExtensionRec {
#define __DRI_CTX_PRIORITY_LOW 0
#define __DRI_CTX_PRIORITY_MEDIUM 1
#define __DRI_CTX_PRIORITY_HIGH 2
#define __DRI_CTX_PRIORITY_REALTIME 3
#define __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR 5
#define __DRI_CTX_RELEASE_BEHAVIOR_NONE 0

16
src/gallium/include/pipe/p_defines.h
View file

@ -413,6 +413,15 @@ enum pipe_flush_flags
*/
#define PIPE_CONTEXT_MEDIA_ONLY (1 << 9)
/**
* Create a realtime priority context.
*
* The context must run at the highest possible priority and be capable of
* preempting the current executing context when commands are flushed
* by such a realtime context.
*/
#define PIPE_CONTEXT_REALTIME_PRIORITY (1 << 10)
/**
* Flags for pipe_context::memory_barrier.
*/
@ -998,9 +1007,10 @@ enum pipe_texture_transfer_mode {
*
* Note that these match __EGL_CONTEXT_PRIORITY_*_BIT.
*/
#define PIPE_CONTEXT_PRIORITY_LOW (1 << 0)
#define PIPE_CONTEXT_PRIORITY_MEDIUM (1 << 1)
#define PIPE_CONTEXT_PRIORITY_HIGH (1 << 2)
#define PIPE_CONTEXT_PRIORITY_LOW (1 << 0)
#define PIPE_CONTEXT_PRIORITY_MEDIUM (1 << 1)
#define PIPE_CONTEXT_PRIORITY_HIGH (1 << 2)
#define PIPE_CONTEXT_PRIORITY_REALTIME (1 << 3)
enum pipe_quirk_texture_border_color_swizzle {
PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 = (1 << 0),