[Piglit] [PATCH] arb_transform_feedback3: test for an incorrect assert in mesa/st

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This test hits an assert in the state tracker from the API.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 .../spec/arb_transform_feedback3/CMakeLists.gl.txt |  2 +-
 tests/spec/arb_transform_feedback3/begin_end.c     | 78 ++++++++++++++++++++++
 2 files changed, 79 insertions(+), 1 deletion(-)
 create mode 100644 tests/spec/arb_transform_feedback3/begin_end.c

diff --git a/tests/spec/arb_transform_feedback3/CMakeLists.gl.txt b/tests/spec/arb_transform_feedback3/CMakeLists.gl.txt
index 56bf74b..5d93563 100644
--- a/tests/spec/arb_transform_feedback3/CMakeLists.gl.txt
+++ b/tests/spec/arb_transform_feedback3/CMakeLists.gl.txt
@@ -15,5 +15,5 @@ piglit_add_executable (arb_transform_feedback3-draw_using_invalid_stream_index d
 piglit_add_executable (arb_transform_feedback3-set_varyings_with_invalid_args set_varyings_with_invalid_args.c)
 piglit_add_executable (arb_transform_feedback3-set_invalid_varyings set_invalid_varyings.c)
 piglit_add_executable (arb_transform_feedback3-ext_interleaved_two_bufs ext_interleaved_two_bufs.c)
-
+piglit_add_executable (arb_transform_feedback3-begin_end begin_end.c)
 # vim: ft=cmake:
diff --git a/tests/spec/arb_transform_feedback3/begin_end.c b/tests/spec/arb_transform_feedback3/begin_end.c
new file mode 100644
index 0000000..8cedf87
--- /dev/null
+++ b/tests/spec/arb_transform_feedback3/begin_end.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright © 2013 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.
+ */
+
+#include "piglit-util-gl.h"
+#include "xfb3_common.h"
+
+/**
+ * @file begin_end.c 
+ *
+ * This tests for a bug in the gallium state tracker which asserted with
+ * state_tracker/st_cb_xformfb.c:194: st_transform_feedback_get_draw_target: Assertion `0' failed.
+ * This was being hit by ogl conform as well.
+ */
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 32;
+	config.supports_gl_core_version = 32;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+	GLuint prog;
+	GLint max_attrib_n;
+	GLuint buffer;
+	const char * outputVaryings[] = {"gl_Position"};
+	piglit_require_extension("GL_ARB_transform_feedback3");
+
+	glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
+		&max_attrib_n);
+	if (!max_attrib_n) {
+		printf("Maximum number of separete attributes is zero\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	prog = piglit_build_simple_program_multiple_shaders(
+			    GL_VERTEX_SHADER, vs_pass_thru_text, 0);
+	glTransformFeedbackVaryings(prog, 1, &outputVaryings[0], GL_INTERLEAVED_ATTRIBS);
+	glLinkProgram(prog);
+	glUseProgram(prog);
+
+	glGenBuffers(1, &buffer);
+	glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buffer);
+	glBeginTransformFeedback(GL_POINTS);
+	glEndTransformFeedback();
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	/* Should never be reached */
+	return PIGLIT_FAIL;
+}
-- 
2.4.3