Add puglGetViewHint()

This allows retrieving properties of the view that may be needed, such as the
actual bit depth (which may vary from the suggested depth provided as a hint).

1 files changed, 86 insertions, 0 deletions

diff --git a/test/test_gl_hints.c b/test/test_gl_hints.c
new file mode 100644
index 0000000..9830e2e
--- /dev/null
+++ b/test/test_gl_hints.c
@@ -0,0 +1,86 @@
+/*
+  Copyright 2020 David Robillard <d@drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/*
+  Tests that all hints are set to real values after a view is realized.
+*/
+
+#undef NDEBUG
+
+#include "test_utils.h"
+
+#include "pugl/pugl.h"
+#include "pugl/pugl_gl.h"
+
+#include <assert.h>
+
+static PuglStatus
+onEvent(PuglView* view, const PuglEvent* event)
+{
+	(void)view;
+	(void)event;
+
+	return PUGL_SUCCESS;
+}
+
+int
+main(void)
+{
+	PuglWorld* const world = puglNewWorld(PUGL_PROGRAM, 0);
+	PuglView* const  view  = puglNewView(world);
+
+	// Set up view
+	puglSetClassName(world, "Pugl Test");
+	puglSetBackend(view, puglGlBackend());
+	puglSetEventFunc(view, onEvent);
+	puglSetDefaultSize(view, 512, 512);
+
+	// Set all hints that support it to PUGL_DONT_CARE
+	assert(!puglSetViewHint(view, PUGL_RED_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_GREEN_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_BLUE_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_ALPHA_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_DEPTH_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_STENCIL_BITS, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_SAMPLES, PUGL_DONT_CARE));
+	assert(!puglSetViewHint(view, PUGL_DOUBLE_BUFFER, PUGL_DONT_CARE));
+
+	// Realize view and print all hints for debugging convenience
+	assert(!puglRealize(view));
+
+	// Check that no hints are set to PUGL_DONT_CARE
+	assert(puglGetViewHint(view, PUGL_USE_COMPAT_PROFILE) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_USE_DEBUG_CONTEXT) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_CONTEXT_VERSION_MAJOR) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_CONTEXT_VERSION_MINOR) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_RED_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_GREEN_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_BLUE_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_ALPHA_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_DEPTH_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_STENCIL_BITS) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_SAMPLES) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_DOUBLE_BUFFER) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_SWAP_INTERVAL) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_RESIZABLE) != PUGL_DONT_CARE);
+	assert(puglGetViewHint(view, PUGL_IGNORE_KEY_REPEAT) != PUGL_DONT_CARE);
+
+	// Tear down
+	puglFreeView(view);
+	puglFreeWorld(world);
+
+	return 0;
+}