[Piglit] [PATCH 1/1] viewport-scissors-clamp: to test the 2d scissors rect clamping
Eleni Maria Stea
estea at igalia.com
Wed Feb 20 20:22:18 UTC 2019
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 <estea at 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
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