security/initialized-texmemory - test contents of unitialized texture memory

This is the first of a new category of piglit tests that exercise
things related to security.

The first test, initialized-texmemory, creates a texture image with
unspecified contents (pixels=NULL).  We draw a polygon with the texture
and see what we get.  Ideally, we'd get a constant/black image and not
some random VRAM data from another application or another user (like a
window image).  The OpenGL spec doesn't say that texture memory should
be initialized in this situation so if the test fails we return "WARN"
rather than "FAIL".

Reviewed-by: José Fonseca <jfonseca@vmware.com>

3 files changed, 104 insertions, 0 deletions

diff --git a/tests/security/CMakeLists.gl.txt b/tests/security/CMakeLists.gl.txt
new file mode 100644
index 000000000..bddd59162
--- /dev/null
+++ b/tests/security/CMakeLists.gl.txt
@@ -0,0 +1,16 @@
+
+include_directories(
+	${GLEXT_INCLUDE_DIR}
+	${OPENGL_INCLUDE_PATH}
+)
+
+link_libraries (
+	piglitutil
+	${OPENGL_gl_LIBRARY}
+	${OPENGL_glu_LIBRARY}
+)
+
+
+piglit_add_executable (initialized-texmemory initialized-texmemory.c)
+
+# vim: ft=cmake:
diff --git a/tests/security/CMakeLists.txt b/tests/security/CMakeLists.txt
new file mode 100644
index 000000000..144a306f4
--- /dev/null
+++ b/tests/security/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/security/initialized-texmemory.c b/tests/security/initialized-texmemory.c
new file mode 100644
index 000000000..ecca53e73
--- /dev/null
+++ b/tests/security/initialized-texmemory.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright © 2012 VMware, Inc.
+ *
+ * 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.
+ */
+
+/**
+ * Test that texture memory is initialized to a constant color and not
+ * stale data that may show old contents of VRAM.
+ *
+ * To pass this test an OpenGL implementation should initialize the
+ * contents of the new buffer to some fixed value (like all zeros).
+ * But since that's not spec'd by OpenGL, we only return WARN instead of
+ * FAIL if that's not the case.
+ *
+ * Brian Paul
+ * June 2012
+ */
+
+#include "piglit-util.h"
+
+PIGLIT_GL_TEST_MAIN(
+    512 /*window_width*/,
+    512 /*window_height*/,
+    GLUT_RGB | GLUT_DOUBLE)
+
+
+enum piglit_result
+piglit_display(void)
+{
+	GLfloat firstPixel[4];
+	bool pass = true;
+
+        /* init color buffer to red */
+	glClearColor(1, 0, 0, 1);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glEnable(GL_TEXTURE_2D);
+
+        piglit_draw_rect_tex(0, 0, piglit_width, piglit_height,
+                             0.0, 0.0, 1.0, 1.0);
+
+	/* The whole image should be same color */
+	glReadPixels(0, 0, 1, 1, GL_RGBA, GL_FLOAT, firstPixel);
+	pass = piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height,
+				     firstPixel);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+        GLsizei width = 1024, height = 1024;
+	GLuint tex;
+
+        /* Create texture image with pixels=NULL (undefined) */
+	glGenTextures(1, &tex);
+	glBindTexture(GL_TEXTURE_2D, tex);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
+                     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+}