[Piglit] [PATCH] ARB_get_program_binary: Test that XFB varying info works on program reload

[Tapani Pälli]

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 .../spec/arb_get_program_binary/CMakeLists.gl.txt  |   1 +
 tests/spec/arb_get_program_binary/xfb-varyings.c   | 126 +++++++++++++++++++++
 2 files changed, 127 insertions(+)
 create mode 100644 tests/spec/arb_get_program_binary/xfb-varyings.c

diff --git a/tests/spec/arb_get_program_binary/CMakeLists.gl.txt b/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
index 0032d9f2a..ea43ba9ae 100644
--- a/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
+++ b/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
@@ -14,5 +14,6 @@ piglit_add_executable (arb_get_program_binary-retrievable_hint retrievable_hint.
 piglit_add_executable (arb_get_program_binary-reset-uniform reset-uniform.c gpb-common.c)
 piglit_add_executable (arb_get_program_binary-restore-implicit-use-program
                        restore-implicit-use-program.c gpb-common.c)
+piglit_add_executable (arb_get_program_binary-xfb-varyings xfb-varyings.c gpb-common.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_get_program_binary/xfb-varyings.c b/tests/spec/arb_get_program_binary/xfb-varyings.c
new file mode 100644
index 000000000..67715a84a
--- /dev/null
+++ b/tests/spec/arb_get_program_binary/xfb-varyings.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2018 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.
+ */
+
+/**
+ * \file xfb-varyings.c
+ *
+ * Ref: https://bugs.freedesktop.org/show_bug.cgi?id=106907
+ *
+ * We test that querying transform feedback varying information via
+ * glGetProgramiv works correctly after restoring a program binary.
+ */
+
+#include "piglit-util-gl.h"
+#include "gpb-common.h"
+#include <stdlib.h>
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 30;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB;
+	config.khr_no_error_support = PIGLIT_NO_ERRORS;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static bool
+get_programiv(GLuint prog, GLenum param, int expected)
+{
+	int val;
+	glGetProgramiv(prog, param, &val);
+	if (val != expected)
+		fprintf(stderr, "error: got %d, expected %d\n", expected, val);
+	return val == expected;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLsizei bin_length;
+	GLenum bin_format;
+	void *binary;
+	int num_formats = 0;
+	bool pass = true;
+	GLuint prog;
+
+	static const char *varyings[] = { "xfb1", "xfb2", NULL };
+	static const char vs_source[] =
+		"varying vec4 xfb1;\n"
+		"varying vec4 xfb2;\n"
+		"void main()\n"
+		"{\n"
+		"    gl_Position = gl_Vertex;\n"
+		"    xfb1 = vec4(1.0);\n"
+		"    xfb2 = vec4(0.0);\n"
+		"}\n";
+
+	piglit_require_extension("GL_ARB_get_program_binary");
+
+	glGetIntegerv(GL_NUM_PROGRAM_BINARY_FORMATS, &num_formats);
+	if (num_formats == 0)
+		piglit_report_result(PIGLIT_SKIP);
+
+	prog = piglit_build_simple_program_unlinked(vs_source, NULL);
+
+	glTransformFeedbackVaryings(prog, 2, varyings, GL_SEPARATE_ATTRIBS);
+
+	glLinkProgram(prog);
+	if (!piglit_link_check_status(prog))
+		piglit_report_result(PIGLIT_FAIL);
+
+	if (!gpb_save_program(prog, &binary, &bin_length, &bin_format)) {
+		fprintf(stderr,
+			"failed to save program with GetProgramBinary\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	/* Delete program and create empty one. */
+	glDeleteProgram(prog);
+	prog = glCreateProgram();
+
+	/* Restore original program. */
+	if (!gpb_restore_program(prog, binary, bin_length, bin_format)) {
+		free(binary);
+		fprintf(stderr, "failed to restore binary program\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+	free(binary);
+
+	/* Query XFB varying information. */
+	if (!get_programiv(prog, GL_TRANSFORM_FEEDBACK_BUFFER_MODE,
+			   GL_SEPARATE_ATTRIBS))
+		piglit_report_result(PIGLIT_FAIL);
+
+	if (!get_programiv(prog, GL_TRANSFORM_FEEDBACK_VARYINGS,
+			   ARRAY_SIZE(varyings) - 1))
+		piglit_report_result(PIGLIT_FAIL);
+
+	glDeleteProgram(prog);
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}
-- 
2.14.4