[Piglit] [PATCH] xor-copypixels: simple test of glCopyPixels in XOR mode

[Charmaine Lee]

Reviewed-by: Charmaine Lee <charmainel at vmware.com>
________________________________________
From: Brian Paul <brianp at vmware.com>
Sent: Monday, May 16, 2016 12:58 PM
To: piglit at lists.freedesktop.org
Cc: Charmaine Lee; Brian Paul
Subject: [PATCH] xor-copypixels: simple test of glCopyPixels in XOR mode

---
 tests/all.py                        |   1 +
 tests/spec/gl-1.1/CMakeLists.gl.txt |   1 +
 tests/spec/gl-1.1/xor-copypixels.c  | 132 ++++++++++++++++++++++++++++++++++++
 3 files changed, 134 insertions(+)
 create mode 100644 tests/spec/gl-1.1/xor-copypixels.c

diff --git a/tests/all.py b/tests/all.py
index 97ce02a..e804891 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -886,6 +886,7 @@ with profile.group_manager(
     g(['geterror-inside-begin'], run_concurrent=False)
     g(['glinfo'])
     g(['gl-1.1-xor'])
+    g(['gl-1.1-xor-copypixels'])
     g(['hiz'], run_concurrent=False)
     g(['infinite-spot-light'], run_concurrent=False)
     g(['line-aa-width'], run_concurrent=False)
diff --git a/tests/spec/gl-1.1/CMakeLists.gl.txt b/tests/spec/gl-1.1/CMakeLists.gl.txt
index 300e6fd..1fa0928 100644
--- a/tests/spec/gl-1.1/CMakeLists.gl.txt
+++ b/tests/spec/gl-1.1/CMakeLists.gl.txt
@@ -9,5 +9,6 @@ link_libraries (
 )

 piglit_add_executable (gl-1.1-xor xor.c)
+piglit_add_executable (gl-1.1-xor-copypixels xor-copypixels.c)

 # vim: ft=cmake:
diff --git a/tests/spec/gl-1.1/xor-copypixels.c b/tests/spec/gl-1.1/xor-copypixels.c
new file mode 100644
index 0000000..93a382a
--- /dev/null
+++ b/tests/spec/gl-1.1/xor-copypixels.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2016 VMware, Inc.
+ *
+ * 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.
+ */
+
+
+/**
+ * Basic test glCopyPixels in XOR mode.
+ *
+ * Brian Paul
+ * May 2016
+ */
+
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+       config.supports_gl_compat_version = 11;
+       config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+static const float black[4] = {0, 0, 0, 0};
+
+
+static void
+draw_test_pattern(void)
+{
+       glPushMatrix();
+       glTranslatef(-0.5, 0, 0);
+       glScalef(0.5, 1, 1);
+
+       /* draw background colored quad */
+       glBegin(GL_TRIANGLE_FAN);
+       glColor3f(1, 0, 0);
+       glVertex2f(-1, -1);
+       glColor3f(0, 1, 0);
+       glVertex2f( 1, -1);
+       glColor3f(0, 0, 1);
+       glVertex2f( 1,  1);
+       glColor3f(1, 1, 0);
+       glVertex2f(-1,  1);
+       glEnd();
+
+       /* draw lines */
+       glColor3f(1, 1, 1);
+       glBegin(GL_LINE_STRIP);
+       glVertex2f(0, -0.9);
+       glVertex2f(0.9, 0);
+       glVertex2f(0, 0.9);
+       glVertex2f(-0.9, 0);
+       glVertex2f(0, -0.9);
+       glEnd();
+       glPopMatrix();
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+       bool pass = true;
+       int x2 = piglit_width / 2;
+       GLfloat pixel[4];
+
+       glMatrixMode(GL_PROJECTION);
+       glLoadIdentity();
+       glOrtho(-1, 1, -1, 1, -1, 1);
+
+       glViewport(0, 0, piglit_width, piglit_height);
+
+       glClear(GL_COLOR_BUFFER_BIT);
+
+       draw_test_pattern();
+
+       /* copy image from left to right side of window */
+       glWindowPos2i(x2, 0);
+       glCopyPixels(0, 0, x2, piglit_height, GL_COLOR);
+
+       /* Check that the copy did something */
+       glReadPixels(piglit_width * 3 / 4, piglit_height / 2, 1, 1,
+                    GL_RGBA, GL_FLOAT, pixel);
+       if (pixel[0] == 0.0 ||
+           pixel[1] == 0.0 ||
+           pixel[2] == 0.0) {
+               printf("glCopyPixels appeared to fail.\n");
+               pass = false;
+       }
+
+       /* copy the image again (left to right, but with XOR) */
+       glLogicOp(GL_XOR);
+       glEnable(GL_COLOR_LOGIC_OP);
+       glCopyPixels(0, 0, x2, piglit_height, GL_COLOR);
+
+       /* now the right half of the window show be black again */
+       if (!piglit_probe_rect_rgba(x2, 0, x2, piglit_height, black)) {
+               printf("XOR glCopyPixels failed to erase image\n");
+               pass = false;
+       }
+
+       glDisable(GL_COLOR_LOGIC_OP);
+
+       piglit_present_results();
+
+       piglit_check_gl_error(GL_NO_ERROR);
+
+       return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+       /* nothing */
+}
--
1.9.1