arb_copy_buffer-intra-buffer-copy: new GL_ARB_copy_buffer test

To exercise copying within a single buffer.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

2 files changed, 96 insertions, 0 deletions

diff --git a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
index 3feaca8cf..9cd338dc6 100644
--- a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
+++ b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
@@ -13,6 +13,7 @@ piglit_add_executable (copybuffersubdata copybuffersubdata.c)
 piglit_add_executable (arb_copy_buffer-data-sync data-sync.c)
 piglit_add_executable (arb_copy_buffer-dlist dlist.c)
 piglit_add_executable (arb_copy_buffer-get get.c)
+piglit_add_executable (arb_copy_buffer-intra-buffer-copy intra-buffer-copy.c)
 piglit_add_executable (arb_copy_buffer-overlap overlap.c)
 piglit_add_executable (arb_copy_buffer-negative-bound-zero negative-bound-zero.c)
 piglit_add_executable (arb_copy_buffer-negative-bounds negative-bounds.c)
diff --git a/tests/spec/arb_copy_buffer/intra-buffer-copy.c b/tests/spec/arb_copy_buffer/intra-buffer-copy.c
new file mode 100644
index 000000000..04f980847
--- /dev/null
+++ b/tests/spec/arb_copy_buffer/intra-buffer-copy.c
@@ -0,0 +1,95 @@
+/*
+ * 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.
+ */
+
+/**
+ * Simple test of copying within a single buffer.
+ *
+ * Brian Paul
+ * 21 June 2016
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+	config.supports_gl_compat_version = 15;
+	config.supports_gl_core_version = 31;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+void
+piglit_init(int argc, char *argv[])
+{
+	bool pass = true;
+	GLuint buffer;
+	GLubyte data[250], *map;
+	int i;
+
+	piglit_require_extension("GL_ARB_copy_buffer");
+
+	glGenBuffers(1, &buffer);
+	glBindBuffer(GL_COPY_READ_BUFFER, buffer);
+	glBindBuffer(GL_COPY_WRITE_BUFFER, buffer);
+
+	/* create empty buffer */
+	glBufferData(GL_COPY_READ_BUFFER, 1000, NULL, GL_STREAM_COPY);
+
+	/* fill last 250 of 1000 bytes */
+	for (i = 0; i < 250; i++)
+		data[i] = i;
+	glBufferSubData(GL_COPY_READ_BUFFER, 750, 250, data);
+
+	/* copy last 250 bytes to offset 500 */
+	glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
+			    750, 500, 250);
+
+	/* copy last 500 bytes to start of buffer */
+	glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
+			    500, 0, 500);
+
+	/* check results */
+	map = glMapBuffer(GL_COPY_READ_BUFFER, GL_READ_ONLY);
+	assert(map);
+
+	for (i = 0; i < 1000; i++) {
+		if (map[i] != i % 250) {
+			printf("Wrong buffer value at position %u.\n", i);
+			printf("Expected %u, found %u\n", i % 250, map[i]);
+			pass = false;
+			break;
+		}
+	}
+
+	glUnmapBuffer(GL_COPY_READ_BUFFER);
+
+	glDeleteBuffers(1, &buffer);
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	/* unreachable */
+	return PIGLIT_FAIL;
+}