summaryrefslogtreecommitdiff
path: root/tests/spec/ext_texture_array
diff options
context:
space:
mode:
authorBrian Paul <brianp@vmware.com>2013-07-24 09:11:03 -0600
committerBrian Paul <brianp@vmware.com>2013-09-03 08:49:35 -0600
commit68e9a23be3ed242ac7312d41ef003ebb284891f4 (patch)
tree36763fd7700b8e81798ac31ffd3a7e5352862070 /tests/spec/ext_texture_array
parent6e6b1752ec018caa7566b2eb88530155179b53fd (diff)
ext_texture_array-gen-mipmap: test texture array mipmap generation
Test compressed formats too, to check for a Mesa bug.
Diffstat (limited to 'tests/spec/ext_texture_array')
-rw-r--r--tests/spec/ext_texture_array/CMakeLists.gl.txt1
-rw-r--r--tests/spec/ext_texture_array/gen-mipmap.c137
2 files changed, 138 insertions, 0 deletions
diff --git a/tests/spec/ext_texture_array/CMakeLists.gl.txt b/tests/spec/ext_texture_array/CMakeLists.gl.txt
index 5b109622d..048e0d334 100644
--- a/tests/spec/ext_texture_array/CMakeLists.gl.txt
+++ b/tests/spec/ext_texture_array/CMakeLists.gl.txt
@@ -11,3 +11,4 @@ link_libraries (
piglit_add_executable (ext_texture_array-maxlayers maxlayers.c)
piglit_add_executable (ext_texture_array-compressed compressed.c)
+piglit_add_executable (ext_texture_array-gen-mipmap gen-mipmap.c)
diff --git a/tests/spec/ext_texture_array/gen-mipmap.c b/tests/spec/ext_texture_array/gen-mipmap.c
new file mode 100644
index 000000000..f0a306f71
--- /dev/null
+++ b/tests/spec/ext_texture_array/gen-mipmap.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2013 VMware, Inc.
+ *
+ * Permission is hereby, 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 glGenerateMipmaps with a texture array.
+ * In particular, test with texture compression to expose a Mesa bug.
+ * See https://bugs.freedesktop.org/show_bug.cgi?id=66850
+ *
+ * Brian Paul
+ * 24 July 2013
+ */
+
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+ config.supports_gl_compat_version = 10;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+/* texture size */
+#define WIDTH 128
+#define HEIGHT 64
+#define DEPTH 3
+#define BPP 4 /* GL_RGBA/ubyte */
+
+
+static bool
+run_test(GLenum internalFormat)
+{
+ unsigned char *buf, *buf2;
+ int level;
+ GLuint tex;
+ bool pass = true;
+
+ buf = malloc(WIDTH * HEIGHT * DEPTH * BPP);
+ buf2 = malloc(WIDTH * HEIGHT * DEPTH * BPP);
+
+ /* Create 2D array texture */
+ memset(buf, 255, WIDTH * HEIGHT * DEPTH * BPP); /* white */
+ glGenTextures(1, &tex);
+ glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
+ glTexImage3D(GL_TEXTURE_2D_ARRAY, 0,
+ internalFormat,
+ WIDTH, HEIGHT, DEPTH, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE,
+ buf);
+
+ glGenerateMipmap(GL_TEXTURE_2D_ARRAY);
+
+ /* now read back texture images and test */
+ for (level = 0; (WIDTH >> level) > 0; level++) {
+ int x, y, z, level_size, row_len;
+
+ memset(buf2, 0, WIDTH * HEIGHT * DEPTH * BPP);
+
+ glGetTexImage(GL_TEXTURE_2D_ARRAY, level,
+ GL_RGBA, GL_UNSIGNED_BYTE, buf2);
+
+ /* test center texel */
+ x = (WIDTH >> level) / 2;
+ y = (HEIGHT >> level) / 2;
+
+ level_size = (WIDTH >> level) * (HEIGHT >> level) * BPP;
+ row_len = (WIDTH >> level) * BPP;
+
+ for (z = 0; z < DEPTH; z++) {
+ int pos = z * level_size + y * row_len + x * BPP;
+
+ if (buf2[pos + 0] != 255 ||
+ buf2[pos + 1] != 255 ||
+ buf2[pos + 2] != 255 ||
+ buf2[pos + 3] != 255) {
+ printf("Probe at level %d, x %d, y %d, z %d = "
+ " (%u, %u, %u, %u),"
+ " expected (255,255,255,255)\n",
+ level, x, y, z,
+ buf2[pos + 0],
+ buf2[pos + 1],
+ buf2[pos + 2],
+ buf2[pos + 3]);
+ printf("Internal tex format %s\n",
+ piglit_get_gl_enum_name(internalFormat));
+ pass = false;
+ break;
+ }
+ }
+ }
+
+ free(buf);
+ free(buf2);
+
+ return pass;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+
+ pass = run_test(GL_RGBA) && pass;
+ if (piglit_is_extension_supported("GL_ARB_texture_compression")) {
+ pass = run_test(GL_COMPRESSED_RGBA) && pass;
+ pass = run_test(GL_COMPRESSED_RGB) && pass;
+ }
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_extension("GL_EXT_texture_array");
+}