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render: add wlr_renderer_get_time()

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This queries the current GPU time.

[1]: https://registry.khronos.org/OpenGL/extensions/EXT/EXT_disjoint_timer_query.txt

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3025
This commit is contained in:
Simon Ser 2022-09-23 21:55:29 +02:00
parent c07424411a
commit b4765809b5
5 changed files with 45 additions and 0 deletions
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24
render/gles2/renderer.c
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@ -18,6 +18,7 @@
#include "render/gles2.h"
#include "render/pixel_format.h"
#include "types/wlr_matrix.h"
#include "util/time.h"
static const GLfloat verts[] = {
1, 0, // top right
@ -485,6 +486,23 @@ struct wlr_egl *wlr_gles2_renderer_get_egl(struct wlr_renderer *wlr_renderer) {
return renderer->egl;
}
static bool gles2_get_time(struct wlr_renderer *wlr_renderer, struct timespec *t) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
if (!renderer->exts.EXT_disjoint_timer_query) {
return false;
}
GLint64 nsec = 0;
push_gles2_debug(renderer);
renderer->procs.glGetInteger64vEXT(GL_TIMESTAMP_EXT, &nsec);
pop_gles2_debug(renderer);
timespec_from_nsec(t, nsec);
return true;
}
static void gles2_destroy(struct wlr_renderer *wlr_renderer) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
@ -539,6 +557,7 @@ static const struct wlr_renderer_impl renderer_impl = {
.get_drm_fd = gles2_get_drm_fd,
.get_render_buffer_caps = gles2_get_render_buffer_caps,
.texture_from_buffer = gles2_texture_from_buffer,
.get_time = gles2_get_time,
};
void push_gles2_debug_(struct wlr_gles2_renderer *renderer,
@ -768,6 +787,11 @@ struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_egl *egl) {
"glEGLImageTargetRenderbufferStorageOES");
}
if (check_gl_ext(exts_str, "GL_EXT_disjoint_timer_query")) {
renderer->exts.EXT_disjoint_timer_query = true;
load_gl_proc(&renderer->procs.glGetInteger64vEXT, "glGetInteger64vEXT");
}
if (renderer->exts.KHR_debug) {
glEnable(GL_DEBUG_OUTPUT_KHR);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR);