An implementation might have up to 4 (!) buffers in its queue, so
render a bunch of frames and make sure each frame has a valid age.
---
tests/glx/glx-buffer-age.c | 50 +++++++++++++++++++++++++++++-----------------
1 file changed, 32 insertions(+), 18 deletions(-)
diff --git a/tests/glx/glx-buffer-age.c b/tests/glx/glx-buffer-age.c
index 35a9e0c..74902bd 100644
--- a/tests/glx/glx-buffer-age.c
+++ b/tests/glx/glx-buffer-age.c
@@ -52,43 +52,57 @@ enum piglit_result
draw(Display *dpy)
{
GLXContext ctx;
- GLboolean pass;
+ bool pass = true;
unsigned int age;
int i;
- static GLfloat colors[3][4] = {{1.0, 0.0, 0.0, 1.0},
- {0.0, 1.0, 0.0, 1.0},
- {0.0, 0.0, 1.0, 1.0}};
- GLfloat probe[4];
- enum piglit_result result;
+ static GLfloat colors[5][4] = {
+ {1.0, 0.0, 0.0, 1.0},
+ {0.0, 1.0, 0.0, 1.0},
+ {0.0, 0.0, 1.0, 1.0},
+ {1.0, 0.0, 1.0, 1.0},
+ {0.0, 1.0, 1.0, 1.0}
+ };
ctx = piglit_get_glx_context(dpy, visinfo);
glXMakeCurrent(dpy, window, ctx);
piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
- for (i = 0; i < 3; i++) {
+ glXQueryDrawable(dpy, window, GLX_BACK_BUFFER_AGE_EXT, &age);
+ if (age != 0) {
+ fprintf(stderr, "Initial age was %d, should be 0\n", age);
+ pass = false;
+ }
+
+ for (i = 0; i < 5; i++) {
glClearColor(colors[i][0],
colors[i][1],
colors[i][2],
colors[i][3]);
glClear(GL_COLOR_BUFFER_BIT);
glXSwapBuffers(dpy, window);
- }
- glXQueryDrawable(dpy, window, GLX_BACK_BUFFER_AGE_EXT, &age);
-
- if (age == 0 || age > 3) {
- result = PIGLIT_SKIP;
- goto out;
+ glXQueryDrawable(dpy, window, GLX_BACK_BUFFER_AGE_EXT, &age);
+ printf("Frame %d: age %d\n", i + 1, age);
+
+ if (age > 0) {
+ int color_i = i - (age - 1);
+ if (color_i < 0) {
+ fprintf(stderr, "too old\n");
+ pass = false;
+ } else {
+ pass = piglit_probe_rect_rgba(0, 0,
+ piglit_width,
+ piglit_height,
+ colors[color_i])
+ && pass;
+ }
+ }
}
- pass = piglit_probe_pixel_rgba_silent(0, 0, colors[3 - age], probe);
- result = pass ? PIGLIT_PASS : PIGLIT_FAIL;
-
-out:
glXMakeCurrent(dpy, None, NULL);
glXDestroyContext(dpy, ctx);
- return result;
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
--
1.9.0
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