There is a hardware bug in i965/gen9+ with provoking vertices. Test if workaround works correctly.
Ref: https://bugs.freedesktop.org/show_bug.cgi?id=103047 v2: - Vertices now have distinctive color - Update message to reflect a nature of the bug which was clarified by Kenneth. He will also provide workaround later. Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com> --- tests/opengl.py | 1 + tests/spec/arb_provoking_vertex/CMakeLists.gl.txt | 1 + .../clipped-geometry-flatshading.c | 81 ++++++++++++++++++++++ 3 files changed, 83 insertions(+) create mode 100644 tests/spec/arb_provoking_vertex/clipped-geometry-flatshading.c diff --git a/tests/opengl.py b/tests/opengl.py index 3109a5e..313b22b 100644 --- a/tests/opengl.py +++ b/tests/opengl.py @@ -2205,6 +2205,7 @@ with profile.test_list.group_manager( g(['arb-provoking-vertex-control'], run_concurrent=False) g(['arb-provoking-vertex-initial'], run_concurrent=False) g(['arb-provoking-vertex-render'], run_concurrent=False) + g(['arb-provoking-vertex-clipped-geometry-flatshading'], run_concurrent=False) g(['arb-quads-follow-provoking-vertex'], run_concurrent=False) g(['arb-xfb-before-flatshading'], run_concurrent=False) diff --git a/tests/spec/arb_provoking_vertex/CMakeLists.gl.txt b/tests/spec/arb_provoking_vertex/CMakeLists.gl.txt index 6dd15bb..3acffc6 100644 --- a/tests/spec/arb_provoking_vertex/CMakeLists.gl.txt +++ b/tests/spec/arb_provoking_vertex/CMakeLists.gl.txt @@ -11,6 +11,7 @@ link_libraries ( piglit_add_executable (arb-provoking-vertex-control provoking-vertex-control.c) piglit_add_executable (arb-provoking-vertex-initial provoking-vertex-initial.c) piglit_add_executable (arb-provoking-vertex-render render.c) +piglit_add_executable (arb-provoking-vertex-clipped-geometry-flatshading clipped-geometry-flatshading.c) piglit_add_executable (arb-quads-follow-provoking-vertex quads-follow-provoking-vertex.c) piglit_add_executable (arb-xfb-before-flatshading xfb-before-flatshading.c) diff --git a/tests/spec/arb_provoking_vertex/clipped-geometry-flatshading.c b/tests/spec/arb_provoking_vertex/clipped-geometry-flatshading.c new file mode 100644 index 0000000..72acb4d --- /dev/null +++ b/tests/spec/arb_provoking_vertex/clipped-geometry-flatshading.c @@ -0,0 +1,81 @@ +/* + * Copyright © 2018 Danylo Piliaiev + * + * 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 provoking vertex works as expected when part of the geometry + * is clipped when flat shading is enabled. + * + * https://bugs.freedesktop.org/show_bug.cgi?id=103047 + */ + +#include "piglit-util-gl.h" + +PIGLIT_GL_TEST_CONFIG_BEGIN + config.supports_gl_compat_version = 10; + config.khr_no_error_support = PIGLIT_NO_ERRORS; +PIGLIT_GL_TEST_CONFIG_END + +void +piglit_init(int argc, char **argv) +{ + piglit_require_extension("GL_EXT_provoking_vertex"); + piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE); + + glShadeModel(GL_FLAT); +} + +enum piglit_result +piglit_display(void) +{ + static const float red[3] = {1, 0, 0}, + green[3] = {0, 1, 0}, + blue[3] = {0, 0, 1}, + yellow[3] = {1, 1, 0}, + cyan[3] = {0, 1, 1}; + + bool pass = true; + + glClear(GL_COLOR_BUFFER_BIT); + glProvokingVertexEXT(GL_LAST_VERTEX_CONVENTION_EXT); + + const int y1 = piglit_height / 3; + + glBegin(GL_TRIANGLE_STRIP); + glColor3fv(cyan); + glVertex3i(piglit_width + 1, y1, 0); + glColor3fv(yellow); + glVertex3i(piglit_width + 2, y1, 0); + glColor3fv(blue); + glVertex3i(piglit_width + 3, y1, 0); + glColor3fv(green); + glVertex3i(piglit_width / 2, y1 * 2, 0); + glColor3fv(red); + glVertex3i(piglit_width - 1, y1 * 2, 0); + glEnd(); + + pass = pass && piglit_probe_pixel_rgb(piglit_width - 2, y1 * 3 / 2, red); + + piglit_present_results(); + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} -- 2.7.4 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit