[Piglit] [PATCH piglit] Test doing a meta operation while there is an occlusion query

[Neil Roberts]

This adds a test which calls glClear while there is an occlusion query
in progress. The clear shouldn't affect the sample count in the
occlusion query. However in Mesa if the clear is implemented as a meta
operation then it will currently trigger a bug because the sample
count is not saved correctly and it gets reset to zero.
---
 tests/all.py                                       |   1 +
 tests/spec/arb_occlusion_query/CMakeLists.gl.txt   |   1 +
 .../occlusion_query_meta_save.c                    | 102 +++++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 tests/spec/arb_occlusion_query/occlusion_query_meta_save.c

diff --git a/tests/all.py b/tests/all.py
index b3417a9..d6470d2 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1967,6 +1967,7 @@ add_concurrent_test(arb_occlusion_query, 'occlusion_query')
 add_concurrent_test(arb_occlusion_query, 'occlusion_query_lifetime')
 add_concurrent_test(arb_occlusion_query, 'occlusion_query_meta_fragments')
 add_concurrent_test(arb_occlusion_query, 'occlusion_query_meta_no_fragments')
+add_concurrent_test(arb_occlusion_query, 'occlusion_query_meta_save')
 add_concurrent_test(arb_occlusion_query, 'occlusion_query_order')
 add_concurrent_test(arb_occlusion_query, 'gen_delete_while_active')
 
diff --git a/tests/spec/arb_occlusion_query/CMakeLists.gl.txt b/tests/spec/arb_occlusion_query/CMakeLists.gl.txt
index 188f07d..01a499d 100644
--- a/tests/spec/arb_occlusion_query/CMakeLists.gl.txt
+++ b/tests/spec/arb_occlusion_query/CMakeLists.gl.txt
@@ -13,5 +13,6 @@ piglit_add_executable (occlusion_query occlusion_query.c)
 piglit_add_executable (occlusion_query_lifetime occlusion_query_lifetime.c)
 piglit_add_executable (occlusion_query_meta_no_fragments occlusion_query_meta_no_fragments.c)
 piglit_add_executable (occlusion_query_meta_fragments occlusion_query_meta_fragments.c)
+piglit_add_executable (occlusion_query_meta_save occlusion_query_meta_save.c)
 piglit_add_executable (occlusion_query_order occlusion_query_order.c)
 piglit_add_executable (gen_delete_while_active gen_delete_while_active.c)
diff --git a/tests/spec/arb_occlusion_query/occlusion_query_meta_save.c b/tests/spec/arb_occlusion_query/occlusion_query_meta_save.c
new file mode 100644
index 0000000..927d72e
--- /dev/null
+++ b/tests/spec/arb_occlusion_query/occlusion_query_meta_save.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Neil Roberts <neil at linux.intel.com>
+ */
+
+/**
+ * \file occlusion_query_meta_save.c
+ *
+ * Verify that doing a clear (which is potentially implemented as a
+ * meta operation) doesn't reset the samples-passed count back to
+ * zero.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 10;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+enum piglit_result
+piglit_display(void)
+{
+	GLuint query;
+	GLint result = -1;
+
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+	glClearColor(0.0, 1.0, 0.0, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glGenQueries(1, &query);
+
+	glBeginQuery(GL_SAMPLES_PASSED, query);
+
+	/* Render 64 pixels. This should affect the query */
+	piglit_draw_rect(0, 0, 8, 8);
+
+	/* Clear the framebuffer. This shouldn't affect the query */
+	glClearColor(0.0, 0.0, 1.0, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	/* Render another 64 pixels. This should continue adding to
+	 * the query */
+	piglit_draw_rect(4, 0, 8, 8);
+
+	glEndQuery(GL_SAMPLES_PASSED);
+
+	glGetQueryObjectiv(query, GL_QUERY_RESULT, &result);
+
+	glDeleteQueries(1, &query);
+
+	piglit_present_results();
+
+	if (result != 128) {
+		printf("Occlusion query resulted in %d samples "
+		       "(expected 128)\n",
+		       result);
+		return PIGLIT_FAIL;
+	} else {
+		return PIGLIT_PASS;
+	}
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLint query_bits;
+
+	piglit_require_extension("GL_ARB_occlusion_query");
+
+	/* It is legal for a driver to support the query API but not have
+	 * any query bits.  I wonder how many applications actually check for
+	 * this case...
+	 */
+	glGetQueryiv(GL_SAMPLES_PASSED, GL_QUERY_COUNTER_BITS, &query_bits);
+	if (query_bits == 0)
+		piglit_report_result(PIGLIT_SKIP);
+}
-- 
1.9.3