Test both MS and per-sample shaded cases. With MS, there should be no additional invocations, while with per-sample shading, each sample should be counted.
Signed-off-by: Ilia Mirkin <[email protected]> --- v1 -> v2: properly account for double-drawing of the seam at MS4 without per-sample shading. tests/spec/arb_framebuffer_no_attachments/atomic.c | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/tests/spec/arb_framebuffer_no_attachments/atomic.c b/tests/spec/arb_framebuffer_no_attachments/atomic.c index 0c62ac3..382c938 100644 --- a/tests/spec/arb_framebuffer_no_attachments/atomic.c +++ b/tests/spec/arb_framebuffer_no_attachments/atomic.c @@ -157,6 +157,36 @@ piglit_init(int argc, char **argv) pass &= compare_counter(4, "glViewport"); + /* Reset counter and add samples to the default fb */ + reset_counter(); + glViewport(0, 0, piglit_width, piglit_height); + glFramebufferParameteri(GL_FRAMEBUFFER, + GL_FRAMEBUFFER_DEFAULT_SAMPLES, 4); + + piglit_draw_rect(-1, -1, 2, 2); + + if (piglit_width == piglit_height) { + /* The seam gets double-drawn */ + pass &= compare_counter((piglit_width + 1) * piglit_height, + "MS4"); + } else { + piglit_report_subtest_result(PIGLIT_SKIP, "MS4"); + } + + if (piglit_is_extension_supported("GL_ARB_sample_shading")) { + /* Reset counter and enable per-sample shading */ + reset_counter(); + glEnable(GL_SAMPLE_SHADING_ARB); + glMinSampleShadingARB(1.0); + + piglit_draw_rect(-1, -1, 2, 2); + + pass &= compare_counter(piglit_width * piglit_height * 4, + "Per-sample"); + } else { + piglit_report_subtest_result(PIGLIT_SKIP, "Per-sample"); + } + glDeleteFramebuffers(1, &fbo); glDeleteVertexArrays(1, &vao); glDeleteBuffers(1, &buffer); -- 2.4.10 _______________________________________________ Piglit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/piglit
