[Piglit] [PATCH] copybuffersubdata: test GL_ARB_copy_buffer extension

[Brian Paul]

---
 tests/all.tests                   |    1 +
 tests/general/CMakeLists.gl.txt   |    1 +
 tests/general/copybuffersubdata.c |  105 +++++++++++++++++++++++++++++++++++++
 3 files changed, 107 insertions(+), 0 deletions(-)
 create mode 100644 tests/general/copybuffersubdata.c

diff --git a/tests/all.tests b/tests/all.tests
index dba691c..05d1a4e 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -226,6 +226,7 @@ add_plain_test(general, 'blendsquare')
 add_plain_test(general, 'clear-varray-2.0')
 add_plain_test(general, 'copypixels-draw-sync')
 add_plain_test(general, 'copypixels-sync')
+add_plain_test(general, 'copybuffersubdata')
 add_plain_test(general, 'depthrange-clear')
 add_plain_test(general, 'depth_clamp')
 add_plain_test(general, 'depth-clamp-range')
diff --git a/tests/general/CMakeLists.gl.txt b/tests/general/CMakeLists.gl.txt
index f8c5ddf..e8e920a 100644
--- a/tests/general/CMakeLists.gl.txt
+++ b/tests/general/CMakeLists.gl.txt
@@ -21,6 +21,7 @@ add_executable (blendsquare blendsquare.c)
 add_executable (clear-varray-2.0 clear-varray-2.0.c)
 add_executable (copypixels-sync copypixels-sync.c)
 add_executable (copypixels-draw-sync copypixels-draw-sync.c)
+add_executable (copybuffersubdata copybuffersubdata.c)
 add_executable (depth-clamp-range depth-clamp-range.c)
 add_executable (dlist-clear dlist-clear.c)
 add_executable (dlist-fdo3129-01 dlist-fdo3129-01.c)
diff --git a/tests/general/copybuffersubdata.c b/tests/general/copybuffersubdata.c
new file mode 100644
index 0000000..8661e5c
--- /dev/null
+++ b/tests/general/copybuffersubdata.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright © 2012 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.
+ */
+
+/**
+ * Test GL_ARB_copy_buffer
+ *
+ * Brian Paul
+ * Jan 2012
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+
+static GLboolean
+test_copy(void)
+{
+#define BUF_SIZE 600  /* multiple of 100 */
+
+	GLuint bufs[2];
+	char data[BUF_SIZE], *p;
+	int i;
+	int chunk = 100;
+	GLboolean pass = GL_TRUE;
+
+	assert(BUF_SIZE % chunk == 0);
+
+	glGenBuffers(2, bufs);
+
+	for (i = 0; i < BUF_SIZE; i++)
+		data[i] = rand() % 256;
+
+	glBindBufferARB(GL_COPY_READ_BUFFER, bufs[0]);
+	glBufferData(GL_COPY_READ_BUFFER, BUF_SIZE, data, GL_STATIC_DRAW);
+
+	glBindBufferARB(GL_COPY_WRITE_BUFFER, bufs[1]);
+	glBufferData(GL_COPY_WRITE_BUFFER, BUF_SIZE, NULL, GL_DYNAMIC_COPY);
+
+	/* copy from bufs[0] to bufs[1] in chunks */
+	for (i = 0; i < BUF_SIZE / chunk; i++) {
+		int srcOffset = i * chunk;
+		int dstOffset = i * chunk;
+		glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
+				    srcOffset, dstOffset, chunk);
+	}
+
+	/* verify dest buffer */
+	p = glMapBuffer(GL_COPY_WRITE_BUFFER, GL_READ_ONLY);
+	for (i = 0; i < BUF_SIZE; i++) {
+		if (p[i] != data[i]) {
+			printf("expected %d, found %d at location %d\n",
+			       data[i], p[i], i);
+			pass = GL_FALSE;
+			break;
+		}
+	}
+
+	glUnmapBuffer(GL_COPY_WRITE_BUFFER);
+
+	glDeleteBuffers(2, bufs);
+
+	return pass;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_PASS;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	if (!piglit_is_extension_supported("GL_ARB_copy_buffer"))
+		piglit_report_result(PIGLIT_SKIP);
+
+	if (!test_copy())
+		piglit_report_result(PIGLIT_FAIL);
+	else
+		piglit_report_result(PIGLIT_PASS);
+}
-- 
1.7.3.4