[Piglit] [PATCH 2/7] egl-context-preemption: Add check for high priority contexts.

[Rafael Antognolli]

Check if we can create high priority contexts, otherwise just fail the
test immediately. There's no reason to test for preemption if we can't
create high priority contexts.
---
 tests/egl/egl-context-preemption.c | 57 ++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/tests/egl/egl-context-preemption.c b/tests/egl/egl-context-preemption.c
index 82a698aa1..9d5aa42ee 100644
--- a/tests/egl/egl-context-preemption.c
+++ b/tests/egl/egl-context-preemption.c
@@ -58,6 +58,40 @@ struct test_profile {
 static bool small = false;
 static int total_objects = 0;
 
+static EGLint
+check_priority(EGLDisplay dpy, EGLContext ctx, EGLint *expected)
+{
+	EGLint value;
+	EGLBoolean status =
+		eglQueryContext(dpy, ctx, EGL_CONTEXT_PRIORITY_LEVEL_IMG, &value);
+
+	if (status == EGL_FALSE) {
+		piglit_loge("eglQueryContext failed\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	if (expected && value != *expected) {
+		piglit_loge("%s fail: priority value 0x%x, expected 0x%x\n",
+			__func__, value, *expected);
+		piglit_loge("Can't create high priority context.\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+	return value;
+}
+
+static EGLContext
+create_context(EGLDisplay dpy, EGLint *attr)
+{
+	EGLContext ctx =
+		eglCreateContext(dpy, EGL_NO_CONFIG_MESA, EGL_NO_CONTEXT, attr);
+
+	if (ctx == EGL_NO_CONTEXT) {
+		piglit_loge("could not create EGL context, attr 0x%x\n", attr[1]);
+		piglit_report_result(PIGLIT_FAIL);
+	}
+	return ctx;
+}
+
 static const char *vs_text =
 	"#version 330 core\n"
 	"layout (location = 0) in vec3 aPos;\n"
@@ -304,6 +338,27 @@ piglit_display(void)
 	return result;
 }
 
+static void
+check_high_context_priority_creation(EGLDisplay dpy)
+{
+	EGLint attr[] = {
+		EGL_CONTEXT_PRIORITY_LEVEL_IMG,
+		EGL_CONTEXT_PRIORITY_HIGH_IMG,
+		EGL_NONE
+	};
+	EGLContext ctx = create_context(dpy, attr);
+	if (ctx == EGL_NO_CONTEXT) {
+		piglit_loge("failed to create context");
+		piglit_check_egl_error(EGL_SUCCESS);
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	EGLint expected = EGL_CONTEXT_PRIORITY_HIGH_IMG;
+	check_priority(dpy, ctx, &expected);
+
+	eglDestroyContext(dpy, ctx);
+}
+
 void
 piglit_init(int argc, char **argv)
 {
@@ -312,6 +367,8 @@ piglit_init(int argc, char **argv)
 	dpy = eglGetCurrentDisplay();
 	piglit_require_egl_extension(dpy, "EGL_IMG_context_priority");
 
+	check_high_context_priority_creation(dpy);
+
 	if (piglit_strip_arg(&argc, argv, "small"))
 		small = true;
 
-- 
2.19.0