[24/30] libcamera: software_isp: egl: Add eglBenchMark
diff mbox series

Message ID 20260618122245.946138-25-bryan.odonoghue@linaro.org
State New
Headers show
Series
  • RFC/RFT: gpuisp: Multipass with speed optimisations on top
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Commit Message

Bryan O'Donoghue June 18, 2026, 12:22 p.m. UTC 
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
---
 include/libcamera/internal/egl.h | 52 ++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

Patch
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diff --git a/include/libcamera/internal/egl.h b/include/libcamera/internal/egl.h
index 0e57678e8..8f905416a 100644
--- a/include/libcamera/internal/egl.h
+++ b/include/libcamera/internal/egl.h
@@ -127,6 +127,8 @@  public:
 	void syncOutput();
 	void flushOutput();
 
+	friend class eGLBenchMark;
+
 private:
 	LIBCAMERA_DISABLE_COPY_AND_MOVE(eGL)
 
@@ -152,4 +154,54 @@  private:
 	PFNGLGETQUERYOBJECTUIVPROC glGetQueryObjectui64v;
 	PFNGLGENQUERIESPROC glGenQueries;
 };
+
+class eGLBenchMark {
+public:
+	eGLBenchMark() {}
+	~eGLBenchMark() {}
+
+	void init(void)
+	{
+		glGenQueries(1, &glQueryTimeId_); 
+	}
+
+	void begin(eGL &egl)
+	{
+		egl.glBeginQuery(GL_TIME_ELAPSED_EXT, glQueryTimeId_);
+	}
+
+	void end(eGL &egl)
+	{
+		egl.glEndQuery(GL_TIME_ELAPSED_EXT);
+	}
+
+	GLuint64 getTimeElapsedSync(eGL &egl)
+	{
+		// Caution sync will wait until result is available
+		return getTimeElapsed(egl, true);
+	}
+
+	GLuint64 getTimeElapsedAsync(eGL &egl)
+	{
+		return getTimeElapsed(egl, false);
+	}
+
+private:
+	GLuint glQueryTimeId_;
+
+	GLuint64 getTimeElapsed(eGL &egl, bool sync)
+	{
+		GLuint time_elapsed_ns = 0;
+		GLuint available = 0;
+
+		if (!sync)
+			egl.glGetQueryObjectuiv(glQueryTimeId_, GL_QUERY_RESULT_AVAILABLE, &available);
+
+		if (available || sync)
+			egl.glGetQueryObjectui64v(glQueryTimeId_, GL_QUERY_RESULT, &time_elapsed_ns);
+
+		return time_elapsed_ns;
+	}
+};
+
 } //namespace libcamera