[Piglit] [PATCH 08/14] arb_direct_state_access: Add a test for glVertexArrayElementBuffer

[Fredrik Höglund]

This test verifies that glVertexArrayElementBuffer works as expected.
---
 tests/all.py                                       |   1 +
 .../spec/arb_direct_state_access/CMakeLists.gl.txt |   1 +
 .../vao-element-array-buffer.c                     | 123 +++++++++++++++++++++
 3 files changed, 125 insertions(+)
 create mode 100644 tests/spec/arb_direct_state_access/vao-element-array-buffer.c

diff --git a/tests/all.py b/tests/all.py
index 442f5b6..6b44069 100755
--- a/tests/all.py
+++ b/tests/all.py
@@ -4285,6 +4285,7 @@ with profile.group_manager(
     g(['arb_direct_state_access-vao-attrib-format'], 'vao-attrib-format')
     g(['arb_direct_state_access-vao-attrib-binding'], 'vao-attrib-binding')
     g(['arb_direct_state_access-vao-binding-divisor'], 'vao-binding-divisor')
+    g(['arb_direct_state_access-vao-element-array-buffer'], 'vao-element-array-buffer')
 
 with profile.group_manager(
         PiglitGLTest,
diff --git a/tests/spec/arb_direct_state_access/CMakeLists.gl.txt b/tests/spec/arb_direct_state_access/CMakeLists.gl.txt
index e45da46..fe17530 100644
--- a/tests/spec/arb_direct_state_access/CMakeLists.gl.txt
+++ b/tests/spec/arb_direct_state_access/CMakeLists.gl.txt
@@ -41,4 +41,5 @@ piglit_add_executable (arb_direct_state_access-vao-attrib-enabledisable vao-attr
 piglit_add_executable (arb_direct_state_access-vao-attrib-format vao-attrib-format.c dsa-utils.c)
 piglit_add_executable (arb_direct_state_access-vao-attrib-binding vao-attrib-binding.c dsa-utils.c)
 piglit_add_executable (arb_direct_state_access-vao-binding-divisor vao-binding-divisor.c dsa-utils.c)
+piglit_add_executable (arb_direct_state_access-vao-element-array-buffer vao-element-array-buffer.c)
 # vim: ft=cmake:
diff --git a/tests/spec/arb_direct_state_access/vao-element-array-buffer.c b/tests/spec/arb_direct_state_access/vao-element-array-buffer.c
new file mode 100644
index 0000000..8e0a9e1
--- /dev/null
+++ b/tests/spec/arb_direct_state_access/vao-element-array-buffer.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2015 Fredrik Höglund
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS AND/OR THEIR SUPPLIERS 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 vao-element-array-buffer.c
+ *
+ * Verifies that glVertexArrayElementBuffer works as expected.
+ */
+
+#include "piglit-util-gl.h"
+
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_core_version = 31;
+	config.supports_gl_compat_version = 20;
+
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+
+enum piglit_result
+piglit_display(void)
+{
+	/* unreached */
+	return PIGLIT_FAIL;
+}
+
+
+static bool
+check_ibo_binding_(GLuint vao, GLuint expected, int line)
+{
+	GLuint value;
+	glGetVertexArrayiv(vao, GL_ELEMENT_ARRAY_BUFFER_BINDING,
+	                   (GLint *) &value);
+
+	if (value != expected) {
+		fprintf(stderr, "GL_ELEMENT_ARRAY_BUFFER_BINDING was %u, "
+				"expected %u (%s:%d)\n",
+		        value, expected, __FILE__, line);
+		return false;
+	}
+
+	return true;
+}
+
+
+#define check_ibo_binding(vao, expected) \
+	check_ibo_binding_(vao, expected, __LINE__)
+
+
+void
+piglit_init(int argc, char *argv[])
+{
+	GLuint vao, ibo;
+	bool pass = true;
+
+	piglit_require_extension("GL_ARB_direct_state_access");
+	piglit_require_extension("GL_ARB_vertex_array_object");
+
+	/* Create a buffer object */
+	glCreateBuffers(1, &ibo);
+
+	/* Create a VAO and verify that no element array buffer is
+	 * bound by default
+	 */
+	glCreateVertexArrays(1, &vao);
+	pass = check_ibo_binding(vao, 0) && pass;
+
+	/* Bind the buffer object as an element array buffer and verify
+	 * that it was successfully bound
+	 */
+	glVertexArrayElementBuffer(vao, ibo);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+	pass = check_ibo_binding(vao, ibo) && pass;
+
+	/* Unbind the buffer object from the VAO and verify that it was
+	 * successfully unbound
+	 */
+	glVertexArrayElementBuffer(vao, 0);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+	pass = check_ibo_binding(vao, 0) && pass;
+
+	glDeleteVertexArrays(1, &vao);
+
+	/* The ARB_direct_state_access spec says:
+	 *
+	 *    "An INVALID_OPERATION error is generated by
+	 *     VertexArrayElementBuffer if <vaobj> is not
+	 *     [compatibility profile: zero or] the name of an existing
+	 *     vertex array object."
+	 */
+	glGenVertexArrays(1, &vao);
+	glVertexArrayElementBuffer(vao, ibo);
+	pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
+	glDeleteVertexArrays(1, &vao);
+
+	glDeleteBuffers(1, &ibo);
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
-- 
2.1.4