This extension introduces GL_STENCIL_INDEX as an allowable format for
glTexSubImage, which can trigger a partial update of a depth/stencil
texture.
Exploits an assumption about source row stride in mesa's storage helper
for z32f_s8 stores to trigger failures on (current) mesa.
Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
.../arb_texture_stencil8/CMakeLists.gl.txt | 1 +
tests/spec/arb_texture_stencil8/texsubimage.c | 116 ++++++++++++++++++
2 files changed, 117 insertions(+)
create mode 100644 tests/spec/arb_texture_stencil8/texsubimage.c
diff --git a/tests/spec/arb_texture_stencil8/CMakeLists.gl.txt
b/tests/spec/arb_texture_stencil8/CMakeLists.gl.txt
index d8de83c4d..58b9e625d 100644
--- a/tests/spec/arb_texture_stencil8/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_stencil8/CMakeLists.gl.txt
@@ -12,5 +12,6 @@ piglit_add_executable (arb_texture_stencil8-stencil-texture
stencil-texture.c)
piglit_add_executable (arb_texture_stencil8-draw draw.c)
piglit_add_executable (arb_texture_stencil8-fbo-stencil8 fbo-stencil8.c)
piglit_add_executable (arb_texture_stencil8-getteximage getteximage.c)
+piglit_add_executable (arb_texture_stencil8-texsubimage texsubimage.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_texture_stencil8/texsubimage.c
b/tests/spec/arb_texture_stencil8/texsubimage.c
new file mode 100644
index 000000000..922644597
--- /dev/null
+++ b/tests/spec/arb_texture_stencil8/texsubimage.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2019 Ilia Mirkin
+ *
+ * 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 texsubimage.c
+ *
+ * Test glTexSubImage with format = GL_STENCIL_INDEX. Based on getteximage.c.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+ config.supports_gl_compat_version = 12;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA;
+ config.khr_no_error_support = PIGLIT_NO_ERRORS;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+#define WIDTH 17
+#define HEIGHT 17
+
+static bool
+test_z32f_s8(void)
+{
+ uint32_t tex[WIDTH * HEIGHT * 2];
+ uint32_t buf[WIDTH * HEIGHT * 2];
+ uint8_t update[WIDTH * HEIGHT];
+ bool ret = true;
+ int i;
+
+ /* init tex data */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ tex[2 * i] = 0x3f800000;
+ tex[2 * i + 1] = 0x80;
+ }
+
+ /* 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;
+
+
+ /* update texture */
+ for (i = 0; i < WIDTH * HEIGHT; i++) {
+ tex[2 * i + 1] = update[i] = i & 0xff;
+ }
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, WIDTH, HEIGHT,
+ GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, update);
+
+ /* read back the texture */
+ 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 (buf[2 * i] != tex[2 * i]) {
+ printf("Wrong depth texel data at position (%d,%d): "
+ "Expected 0x%08x, found 0x%08x\n",
+ i % WIDTH, i / WIDTH, tex[2 * i], buf[2 * i]);
+ ret = false;
+ }
+ if (buf[2 * i + 1] != tex[2 * i + 1]) {
+ printf("Wrong stencil texel data at position (%d,%d): "
+ "Expected 0x%08x, found 0x%08x\n",
+ i % WIDTH, i / WIDTH, tex[2 * i + 1], buf[2 * i
+ 1]);
+ ret = false;
+ }
+ }
+
+ return ret;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ bool pass;
+
+ piglit_require_extension("GL_ARB_texture_stencil8");
+
+ pass = test_z32f_s8();
+
+ piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ /* unused */
+ return PIGLIT_FAIL;
+}
--
2.21.0
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