From: Ian Romanick <ian.d.roman...@intel.com>
I recently found (by inspection) that
glBlitFramebuffer(GL_STENCIL_BUFFER_BIT) from a GL_READ_FRAMEBUFFER with
a GL_TEXTURE_RECTANGLE target stencil texture would corrupt the
GL_DEPTH_STENCIL_TEXTURE_MODE.
NOTE: The GL_TEXTURE_RECTANGLE subtest fails on GEN8+.
v2: Remove all mention of GL_TEXTURE_3D. Ilia pointed out that even
GL_STENCIL_INDEX is never allowed for GL_TEXTURE_3D targets.
GL_ARB_texture_stencil8 allows GL_STENCIL_INDEX8 with glTexImage3D only
for the array-like texture targets.
Signed-off-by: Ian Romanick <ian.d.roman...@intel.com>
---
tests/all.py | 7 +
tests/spec/arb_stencil_texturing/CMakeLists.gl.txt | 1 +
.../arb_stencil_texturing/blit_corrupts_state.c | 313 +++++++++++++++++++++
3 files changed, 321 insertions(+)
create mode 100644 tests/spec/arb_stencil_texturing/blit_corrupts_state.c
diff --git a/tests/all.py b/tests/all.py
index 9365bc3..31c9b75 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1829,6 +1829,13 @@ with profile.group_manager(
grouptools.join('spec', 'ARB_stencil_texturing')) as g:
g(['arb_stencil_texturing-draw'], 'draw')
+with profile.group_manager(
+ PiglitGLTest,
+ grouptools.join('spec', 'ARB_stencil_texturing', 'glBlitFramebuffer
corrupts state')) as g:
+ for t in ['1D', '2D', 'CUBE_MAP', '1D_ARRAY', '2D_ARRAY',
'CUBE_MAP_ARRAY', '2D_MULTISAMPLE', '2D_MULTISAMPLE_ARRAY', 'RECTANGLE']:
+ target = 'GL_TEXTURE_' + t
+ g(['arb_stencil_texturing-blit_corrupts_state', target], target)
+
# Group ARB_sync
with profile.group_manager(
PiglitGLTest, grouptools.join('spec', 'ARB_sync')) as g:
diff --git a/tests/spec/arb_stencil_texturing/CMakeLists.gl.txt
b/tests/spec/arb_stencil_texturing/CMakeLists.gl.txt
index cb469b7..c9fb0ab 100644
--- a/tests/spec/arb_stencil_texturing/CMakeLists.gl.txt
+++ b/tests/spec/arb_stencil_texturing/CMakeLists.gl.txt
@@ -8,4 +8,5 @@ link_libraries (
${OPENGL_gl_LIBRARY}
)
+piglit_add_executable (arb_stencil_texturing-blit_corrupts_state
blit_corrupts_state.c)
piglit_add_executable (arb_stencil_texturing-draw draw.c)
diff --git a/tests/spec/arb_stencil_texturing/blit_corrupts_state.c
b/tests/spec/arb_stencil_texturing/blit_corrupts_state.c
new file mode 100644
index 0000000..5c84041
--- /dev/null
+++ b/tests/spec/arb_stencil_texturing/blit_corrupts_state.c
@@ -0,0 +1,313 @@
+/*
+ * Copyright © 2016 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.
+ */
+
+/**
+ * \file blit-corrupts-state.c
+ * Tests for a bug in glBlitFramebuffer corrupting
GL_DEPTH_STENCIL_TEXTURE_MODE
+ *
+ * The default state for GL_DEPTH_STENCIL_TEXTURE_MODE is GL_DEPTH_COMPONENT.
+ * Create two GL_DEPTH_STENCIL textures and two framebuffer objects. Attach
+ * one texture to each of the FBOs, and blit stencil from one to the other.
+ * After the blit operation verify that the state of
+ * GL_DEPTH_STENCIL_TEXTURE_MODE has not changed.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 30;
+ config.supports_gl_core_version = 31;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static bool
+check_texture_state(GLenum target, unsigned line)
+{
+ GLint value;
+
+ glGetTexParameteriv(target,
+ GL_DEPTH_STENCIL_TEXTURE_MODE,
+ &value);
+ if (value != GL_DEPTH_COMPONENT) {
+ printf("%s, %d: Expected GL_DEPTH_COMPONENT, got %s "
+ "(0x%04x).\n",
+ __func__, line,
+ piglit_get_gl_enum_name(value),
+ value);
+ return false;
+ }
+
+ return true;
+}
+
+static void
+setup_texture(GLenum target)
+{
+ /* All of the non-multisample targets should have the minification and
+ * the magnification set to GL_NEAREST. Setting the filters for
+ * multisample targets results in a GL error.
+ */
+ if (target != GL_TEXTURE_2D_MULTISAMPLE &&
+ target != GL_TEXTURE_2D_MULTISAMPLE_ARRAY) {
+ glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ }
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ glTexImage1D(target,
+ 0 /* level */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 0 /* border */,
+ GL_DEPTH_STENCIL,
+ GL_UNSIGNED_INT_24_8,
+ NULL);
+ break;
+
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_1D_ARRAY:
+ glTexImage2D(target,
+ 0 /* level */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 16 /* height */,
+ 0 /* border */,
+ GL_DEPTH_STENCIL,
+ GL_UNSIGNED_INT_24_8,
+ NULL);
+ break;
+
+ case GL_TEXTURE_CUBE_MAP:
+ for (unsigned i = 0; i < 6; i++) {
+ glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
+ 0 /* level */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 16 /* height */,
+ 0 /* border */,
+ GL_DEPTH_STENCIL,
+ GL_UNSIGNED_INT_24_8,
+ NULL);
+ }
+ break;
+
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ glTexImage3D(target,
+ 0 /* level */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 16 /* height */,
+ 12 /* depth */,
+ 0 /* border */,
+ GL_DEPTH_STENCIL,
+ GL_UNSIGNED_INT_24_8,
+ NULL);
+ break;
+
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ glTexImage2DMultisample(target,
+ 2 /* samples */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 16 /* height */,
+ GL_TRUE /* fixedsamplelocations */);
+ break;
+
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ glTexImage3DMultisample(target,
+ 2 /* samples */,
+ GL_DEPTH24_STENCIL8,
+ 16 /* width */,
+ 16 /* height */,
+ 2 /* depth */,
+ GL_TRUE /* fixedsamplelocations */);
+ break;
+ }
+}
+
+static void
+setup_fbo(GLenum target, GLenum textarget, GLuint attachment)
+{
+ GLenum status;
+
+ switch (textarget) {
+ case GL_TEXTURE_1D:
+ glFramebufferTexture1D(target, GL_DEPTH_STENCIL_ATTACHMENT,
+ textarget, attachment,
+ 0 /* level */);
+ break;
+
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_RECTANGLE:
+ glFramebufferTexture2D(target, GL_DEPTH_STENCIL_ATTACHMENT,
+ textarget, attachment,
+ 0 /* level */);
+ break;
+
+ case GL_TEXTURE_1D_ARRAY:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ glFramebufferTextureLayer(target, GL_DEPTH_STENCIL_ATTACHMENT,
+ attachment,
+ 0 /* level */,
+ 0 /* layer */);
+ break;
+ }
+
+ status = glCheckFramebufferStatus(target);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ printf("Framebuffer incomplete: %s (0x%04x).\n",
+ piglit_get_gl_enum_name(status),
+ status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+}
+
+#define ENUM(e) # e, e
+
+static const struct {
+ const char *target_name;
+ GLenum target;
+ const char *required_extension;
+} test_vectors[] = {
+ { ENUM(GL_TEXTURE_1D), NULL },
+ { ENUM(GL_TEXTURE_2D), NULL },
+
+ { ENUM(GL_TEXTURE_RECTANGLE), "GL_ARB_texture_rectangle" },
+ { ENUM(GL_TEXTURE_2D_MULTISAMPLE), "GL_ARB_texture_multisample" },
+ { ENUM(GL_TEXTURE_2D_MULTISAMPLE_ARRAY), "GL_ARB_texture_multisample" },
+
+ /**
+ * These do not require any extensions because they are part of OpenGL
+ * 3.0. This is especially important for GL_TEXTURE_CUBE_MAP. This
+ * target existed before 3.0, but it could not be used for
+ * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL formats before then.
+ */
+ /*@{*/
+ { ENUM(GL_TEXTURE_1D_ARRAY), NULL },
+ { ENUM(GL_TEXTURE_2D_ARRAY), NULL },
+ { ENUM(GL_TEXTURE_CUBE_MAP), NULL },
+ /*@}*/
+
+ { ENUM(GL_TEXTURE_CUBE_MAP_ARRAY), "GL_ARB_texture_cube_map_array" },
+};
+
+static NORETURN void
+usage_and_exit(const char *name)
+{
+ printf("Usage: %s <target>\n\n"
+ "Where <target> is one of:\n",
+ name);
+
+ for (unsigned i = 0; i < ARRAY_SIZE(test_vectors); i++) {
+ if (test_vectors[i].required_extension == NULL)
+ printf("\t%s\n",
+ test_vectors[i].target_name);
+ else
+ printf("\t%s (requires %s)\n",
+ test_vectors[i].target_name,
+ test_vectors[i].required_extension);
+ }
+
+ piglit_report_result(PIGLIT_FAIL);
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ GLuint tex[2];
+ GLuint fbo[2];
+ bool pass = true;
+ GLenum target = 0;
+
+ piglit_require_extension("GL_ARB_stencil_texturing");
+
+ if (argc != 2)
+ usage_and_exit(argv[0]);
+
+ for (unsigned i = 0; i < ARRAY_SIZE(test_vectors); i++) {
+ if (strcmp(argv[1], test_vectors[i].target_name) == 0) {
+ if (test_vectors[i].required_extension != NULL)
+
piglit_require_extension(test_vectors[i].required_extension);
+
+ target = test_vectors[i].target;
+ break;
+ }
+ }
+
+ if (target == 0)
+ usage_and_exit(argv[0]);
+
+ glGenTextures(ARRAY_SIZE(tex), tex);
+ glGenFramebuffers(ARRAY_SIZE(fbo), fbo);
+
+ glBindTexture(target, tex[0]);
+ setup_texture(target);
+ pass = check_texture_state(target, __LINE__) && pass;
+
+ glBindTexture(target, tex[1]);
+ setup_texture(target);
+ pass = check_texture_state(target, __LINE__) && pass;
+
+ glBindTexture(target, 0);
+
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo[0]);
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo[1]);
+
+ setup_fbo(GL_DRAW_FRAMEBUFFER, target, tex[0]);
+ setup_fbo(GL_READ_FRAMEBUFFER, target, tex[1]);
+
+ glBlitFramebuffer(0, 0, 15, 15,
+ 0, 0, 15, 15,
+ GL_STENCIL_BUFFER_BIT, GL_NEAREST);
+
+ glBindTexture(target, tex[0]);
+ pass = check_texture_state(target, __LINE__) && pass;
+
+ glBindTexture(target, tex[1]);
+ pass = check_texture_state(target, __LINE__) && pass;
+
+ glBindTexture(target, 0);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+ glDeleteTextures(ARRAY_SIZE(tex), tex);
+ glDeleteFramebuffers(ARRAY_SIZE(fbo), fbo);
+
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+ piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ /* UNREACHABLE */
+ return PIGLIT_FAIL;
+}
--
2.5.0
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