A test to check the 2D scissors rect clamping and to reproduce the following bug on i965:
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108999 --- tests/general/CMakeLists.gl.txt | 1 + tests/general/viewport-scissors-clamp.c | 143 ++++++++++++++++++++++++ tests/opengl.py | 1 + 3 files changed, 145 insertions(+) create mode 100644 tests/general/viewport-scissors-clamp.c diff --git a/tests/general/CMakeLists.gl.txt b/tests/general/CMakeLists.gl.txt index 83189fc42..e60e47cbe 100644 --- a/tests/general/CMakeLists.gl.txt +++ b/tests/general/CMakeLists.gl.txt @@ -132,5 +132,6 @@ piglit_add_executable (clear-accum clear-accum.c) piglit_add_executable (vs-point_size-zero vs-point_size-zero.c) piglit_add_executable (triangle-guardband-viewport triangle-guardband-viewport.c) piglit_add_executable (teximage-scale-bias teximage-scale-bias.c) +piglit_add_executable (viewport-scissors-clamp viewport-scissors-clamp.c) # vim: ft=cmake: diff --git a/tests/general/viewport-scissors-clamp.c b/tests/general/viewport-scissors-clamp.c new file mode 100644 index 000000000..590e294a3 --- /dev/null +++ b/tests/general/viewport-scissors-clamp.c @@ -0,0 +1,143 @@ +/* + * Copyright © 2019 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. + * + * Author: + * Eleni Maria Stea <es...@igalia.com> + */ + +/* The purpose of this test is to validate the 2d scissors bbox clamping + * when the Y is flipped (0 on top). It can be used to reproduce this bug: + * https://bugs.freedesktop.org/show_bug.cgi?id=108999 + * and test the fix: https://patchwork.freedesktop.org/series/53830/ + */ + +#include "piglit-util-gl.h" + +int win_width = 800; +int win_height = 600; + +PIGLIT_GL_TEST_CONFIG_BEGIN + +config.supports_gl_compat_version = 20; +config.window_width = win_width; +config.window_height = win_height; +config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB; +config.khr_no_error_support = PIGLIT_NO_ERRORS; + +PIGLIT_GL_TEST_CONFIG_END + +static int piglit_error; +static unsigned int vao, vbo; +static unsigned int sdrprog; +static const float varr[] = { -1, -1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1 }; + +static const char *vsdr_src = + "attribute vec4 vertex;\n" + "void main()\n" "{\n" "gl_Position = vertex;\n" "}\n"; + +static const char *fsdr_src = + "void main()\n" + "{\n" "gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n" "}\n"; + +void +piglit_init(int argc, char **argv) +{ + unsigned int vsdr, fsdr; + int status; + + glGenBuffers(1, &vbo); + glBindBuffer(GL_ARRAY_BUFFER, vbo); + glBufferData(GL_ARRAY_BUFFER, sizeof varr, varr, GL_STATIC_DRAW); + + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindVertexArray(0); + + /* create shaders */ + + vsdr = glCreateShader(GL_VERTEX_SHADER); + glShaderSource(vsdr, 1, &vsdr_src, 0); + glCompileShader(vsdr); + glGetShaderiv(vsdr, GL_COMPILE_STATUS, &status); + if (!status) { + fprintf(stderr, "failed to compile vertex shader\n"); + piglit_error = 1; + return; + } + fsdr = glCreateShader(GL_FRAGMENT_SHADER); + glShaderSource(fsdr, 1, &fsdr_src, 0); + glCompileShader(fsdr); + glGetShaderiv(fsdr, GL_COMPILE_STATUS, &status); + if (!status) { + fprintf(stderr, "failed to compile pixel shader\n"); + piglit_error = 1; + return; + } + + sdrprog = glCreateProgram(); + glAttachShader(sdrprog, vsdr); + glAttachShader(sdrprog, fsdr); + + glBindAttribLocation(sdrprog, 0, "vertex"); + glLinkProgram(sdrprog); + + glGetProgramiv(sdrprog, GL_LINK_STATUS, &status); + if (!status) { + fprintf(stderr, "failed to link program\n"); + piglit_error = 1; + return; + } + + glUseProgram(sdrprog); + + if (glGetError() != GL_NO_ERROR) + piglit_error = 1; +} + +enum piglit_result +piglit_display(void) +{ + if (piglit_error) + return PIGLIT_FAIL; + + glBindVertexArray(vao); + + glViewport(2, 602, 262, 296); + + glDrawArrays(GL_TRIANGLES, 0, 6); + + glViewport(0, 0, 800, 600); + + glDrawArrays(GL_TRIANGLES, 0, 6); + + glBindVertexArray(0); + + if (glGetError() != GL_NO_ERROR) + return PIGLIT_FAIL; + + piglit_swap_buffers(); + + return PIGLIT_PASS; +} diff --git a/tests/opengl.py b/tests/opengl.py index 8e84e2cfc..dff843d6d 100644 --- a/tests/opengl.py +++ b/tests/opengl.py @@ -878,6 +878,7 @@ with profile.test_list.group_manager( g(['incomplete-cubemap', 'format'], 'incomplete-cubemap-format') g(['gl-2.0-texture-units']) g(['gl-2.0-uniform-neg-location']) + g(['viewport-scissors-clamp']) with profile.test_list.group_manager( PiglitGLTest, -- 2.20.1 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit
