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

[Brian Paul]

---
 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