glsl-getactiveuniform-*: New tests for glGetActiveUniform() behavior.

1 files changed, 93 insertions, 0 deletions

diff --git a/tests/shaders/glsl-getactiveuniform-array-size.c b/tests/shaders/glsl-getactiveuniform-array-size.c
new file mode 100644
index 000000000..a630a86d4
--- /dev/null
+++ b/tests/shaders/glsl-getactiveuniform-array-size.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright © 2009 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:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/** @file glsl-vs-sqrt-zero.c
+ *
+ * Tests that sqrt(0.0) in the VS produces 0.0.
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+static GLint prog;
+
+enum piglit_result
+piglit_display(void)
+{
+	/* unreached */
+	return PIGLIT_FAILURE;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLboolean pass = GL_TRUE;
+	GLint vs, fs, len;
+	char *name;
+	GLsizei size;
+	GLenum type;
+
+	if (!GLEW_VERSION_2_0) {
+		printf("Requires OpenGL 2.0\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	vs = piglit_compile_shader(GL_VERTEX_SHADER,
+				   "shaders/glsl-getactiveuniform-array-size.vert");
+	fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
+				   "shaders/glsl-color.frag");
+
+	prog = piglit_link_simple_program(vs, fs);
+
+	glGetProgramiv(prog, GL_ACTIVE_UNIFORM_MAX_LENGTH, &len);
+	name = malloc(len + 20);
+
+	glGetActiveUniform(prog, 0, len + 20, &len, &size, &type, name);
+
+	/* From page 81 (page 89 of the PDF) of the OpenGL 2.1 specification:
+	 *
+	 *     If one or more elements of an array are active,
+	 *     GetActiveUniform will return the name of the array in
+	 *     name, subject to the restrictions listed above. The
+	 *     type of the array is returned in type. The size
+	 *     parameter contains the highest array element index
+	 *     used, plus one.
+	 */
+
+	if (size != 25) {
+		printf("Unexpected active uniform size "
+		       "(saw %d, expected %d)\n", size, 25);
+		pass = GL_FALSE;
+	}
+
+	if (pass)
+		piglit_report_result(PIGLIT_SUCCESS);
+	else
+		piglit_report_result(PIGLIT_FAILURE);
+}