Checks a Mesa bug in glGetTexImage(GL_DEPTH_STENCIL/GL_UNSIGNED_INT_24_8)
---
tests/all.py | 1 +
.../ext_packed_depth_stencil/CMakeLists.gl.txt | 1 +
tests/spec/ext_packed_depth_stencil/getteximage.c | 196 ++++++++++++++++++++
3 files changed, 198 insertions(+)
create mode 100644 tests/spec/ext_packed_depth_stencil/getteximage.c
diff --git a/tests/all.py b/tests/all.py
index 590c832..d433abb 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -2522,6 +2522,7 @@ add_depthstencil_render_miplevels_tests(
'ds=z24_s8'))
ext_packed_depth_stencil['fbo-clear-formats stencil'] =
concurrent_test('fbo-clear-formats GL_EXT_packed_depth_stencil stencil')
ext_packed_depth_stencil['DEPTH_STENCIL texture'] =
concurrent_test('ext_packed_depth_stencil-depth-stencil-texture')
+ext_packed_depth_stencil['getteximage'] =
concurrent_test('ext_packed_depth_stencil-getteximage')
oes_packed_depth_stencil = Group()
spec['OES_packed_depth_stencil'] = oes_packed_depth_stencil
diff --git a/tests/spec/ext_packed_depth_stencil/CMakeLists.gl.txt
b/tests/spec/ext_packed_depth_stencil/CMakeLists.gl.txt
index 2f47328..99439f0 100644
--- a/tests/spec/ext_packed_depth_stencil/CMakeLists.gl.txt
+++ b/tests/spec/ext_packed_depth_stencil/CMakeLists.gl.txt
@@ -11,5 +11,6 @@ link_libraries (
piglit_add_executable (ext_packed_depth_stencil-depth-stencil-texture
depth-stencil-texture.c)
piglit_add_executable (ext_packed_depth_stencil-readpixels-24_8
readpixels-24_8.c)
+piglit_add_executable (ext_packed_depth_stencil-getteximage getteximage.c)
# vim: ft=cmake:
diff --git a/tests/spec/ext_packed_depth_stencil/getteximage.c
b/tests/spec/ext_packed_depth_stencil/getteximage.c
new file mode 100644
index 0000000..0627449
--- /dev/null
+++ b/tests/spec/ext_packed_depth_stencil/getteximage.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright © 2014 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.
+ */
+
+/**
+ * \file getteximage.c
+ *
+ * Test glGetTexImage with packed depth/stencil formats.
+ *
+ * This exercises a bug in Mesa where we failed to do proper texel
+ * conversion for depth/stencil values in glGetTexImage. But, the bug
+ * would only appear depending on whether the driver stores depth/stencil
+ * textures as z24s8 versus s8z24.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+ config.supports_gl_compat_version = 12;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+#define WIDTH 16
+#define HEIGHT 16
+
+
+static bool
+test_z24_s8(void)
+{
+ GLuint tex[WIDTH * HEIGHT];
+ GLuint buf[WIDTH * HEIGHT];
+ GLuint i;
+
+ /* init tex data */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ GLuint s = 255 - (i & 255);
+ GLuint z = i * 100;
+ tex[i] = (z << 24) | s;
+ }
+
+ /* create texture */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8,
+ WIDTH, HEIGHT, 0,
+ GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, tex);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return false;
+
+ /* read back the texture */
+ glGetTexImage(GL_TEXTURE_2D, 0,
+ GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, buf);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return false;
+
+ /* compare */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ if (buf[i] != tex[i]) {
+ printf("Wrong texel data at position %d: "
+ "Expected 0x%08x, found 0x%08x\n",
+ i, tex[i], buf[i]);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
+static bool
+test_z32_s8(void)
+{
+ const double epsilon = 2.0 / (float) 0xffffff; /* 2-bit error */
+ GLuint tex[2 * WIDTH * HEIGHT];
+ GLuint buf[2 * WIDTH * HEIGHT];
+ GLuint i;
+ GLfloat *ftex = (GLfloat *) tex;
+ GLfloat *fbuf = (GLfloat *) buf;
+
+ /* init tex data */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ GLuint s = 255 - (i & 255);
+ GLfloat z = (float) i / (float) (WIDTH * HEIGHT - 1);
+ ftex[i*2+0] = z;
+ tex[i*2+1] = s;
+ }
+
+ /* create texture */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH32F_STENCIL8,
+ WIDTH, HEIGHT, 0,
+ GL_DEPTH_STENCIL,
+ GL_FLOAT_32_UNSIGNED_INT_24_8_REV, tex);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return false;
+
+ /* read back the texture as float32/stencil8 */
+ glGetTexImage(GL_TEXTURE_2D, 0,
+ GL_DEPTH_STENCIL,
+ GL_FLOAT_32_UNSIGNED_INT_24_8_REV, buf);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return false;
+
+ /* compare */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ if (fbuf[i*2+0] != ftex[i*2+0]) {
+ printf("Wrong depth data at position %d: "
+ "Expected %g, found %g\n",
+ i, ftex[i*2+0], fbuf[i*2+0]);
+ return false;
+ }
+ if (buf[i*2+1] != tex[i*2+1]) {
+ printf("Wrong stencil data at position %d: "
+ "Expected 0x%08x, found 0x%08x\n",
+ i, tex[i*2+1], buf[i*2+1]);
+ return false;
+ }
+ }
+
+ /* read back the texture as depth24/stencil8 */
+ glGetTexImage(GL_TEXTURE_2D, 0,
+ GL_DEPTH_STENCIL,
+ GL_UNSIGNED_INT_24_8, buf);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return false;
+
+ /* compare */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ GLuint s = buf[i] & 0xff;
+ GLfloat z = (buf[i] >> 8) / (float) 0xffffff;
+ if (fabs(z - ftex[i*2+0]) > epsilon) {
+ printf("Wrong depth data at position %d: "
+ "Expected %g, found %g\n",
+ i, ftex[i*2+0], z);
+ return false;
+ }
+ if (s != tex[i*2+1]) {
+ printf("Wrong stencil data at position %d: "
+ "Expected 0x%02x, found 0x%02x\n",
+ i, tex[i*2+1], s);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ bool pass;
+
+ if (piglit_get_gl_version() < 30
+ && !(piglit_is_extension_supported("GL_EXT_packed_depth_stencil") &&
+ piglit_is_extension_supported("GL_ARB_framebuffer_object"))) {
+ printf("OpenGL 3.0 or GL_EXT_packed_depth_stencil + "
+ "GL_ARB_framebuffer_object is required.\n");
+ piglit_report_result(PIGLIT_SKIP);
+ }
+
+ pass = test_z24_s8();
+
+ if (piglit_get_gl_version() >= 30 ||
+ piglit_is_extension_supported("GL_NV_depth_buffer_float")) {
+ pass = test_z32_s8() && pass;
+ }
+
+ piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ /* unused */
+ return PIGLIT_FAIL;
+}
--
1.7.10.4
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