ARB_copy_buffer/targets: New test for spec behavior.

2 files changed, 163 insertions, 0 deletions

diff --git a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
index 7a6343544..b8d5fb8af 100644
--- a/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
+++ b/tests/spec/arb_copy_buffer/CMakeLists.gl.txt
@@ -18,5 +18,6 @@ add_executable (arb_copy_buffer-overlap overlap.c)
 add_executable (arb_copy_buffer-negative-bound-zero negative-bound-zero.c)
 add_executable (arb_copy_buffer-negative-bounds negative-bounds.c)
 add_executable (arb_copy_buffer-negative-mapped negative-mapped.c)
+add_executable (arb_copy_buffer-targets targets.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_copy_buffer/targets.c b/tests/spec/arb_copy_buffer/targets.c
new file mode 100644
index 000000000..5d3c7f4de
--- /dev/null
+++ b/tests/spec/arb_copy_buffer/targets.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright © 2012 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.
+ */
+
+/** @file targets.c
+ *
+ * Tests the following piece of the GL_ARB_copy_buffer spec:
+ *
+ *     "All or part of one buffer object's data store may be copied to
+ *      the data store of another buffer object by calling
+ *
+ *      void CopyBufferSubData(enum readtarget, enum writetarget,
+ *                             intptr readoffset, intptr writeoffset,
+ *                             sizeiptr size);
+ *
+ *      with readtarget and writetarget each set to one of the targets
+ *      ARRAY_BUFFER, COPY_READ_BUFFER, COPY_WRITE_BUFFER,
+ *      ELEMENT_ARRAY_BUFFER, PIXEL_PACK_BUFFER, PIXEL_UNPACK_BUFFER,
+ *      TEXTURE_BUFFER, TRANSFORM_FEEDBACK_BUFFER, or
+ *      UNIFORM_BUFFER. While any of these targets may be used, the
+ *      COPY_READ_BUFFER and COPY_WRITE_BUFFER targets are provided
+ *      specifically for copies, so that they can be done without
+ *      affecting other buffer binding targets that may be in use."
+ *
+ * Specifically, it walks over the available targets and makes sure
+ * that copies work for them.
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+enum piglit_result
+piglit_display(void)
+{
+	/* uncreached */
+	return PIGLIT_FAIL;
+}
+
+static bool
+supported(GLenum target)
+{
+	switch (target) {
+	case GL_ARRAY_BUFFER:
+	case GL_ELEMENT_ARRAY_BUFFER:
+		return piglit_is_extension_supported("GL_ARB_vertex_buffer_object");
+
+	case GL_COPY_READ_BUFFER:
+	case GL_COPY_WRITE_BUFFER:
+		return true;
+
+	case GL_PIXEL_PACK_BUFFER:
+	case GL_PIXEL_UNPACK_BUFFER:
+		return (piglit_is_extension_supported("GL_EXT_pixel_buffer_object") ||
+			piglit_is_extension_supported("GL_ARB_pixel_buffer_object"));
+
+	case GL_TEXTURE_BUFFER:
+		return (piglit_is_extension_supported("GL_EXT_texture_buffer_object") ||
+			piglit_is_extension_supported("GL_ARB_texture_buffer_object"));
+
+	case GL_TRANSFORM_FEEDBACK_BUFFER:
+		return piglit_is_extension_supported("GL_EXT_transform_feedback");
+
+	case GL_UNIFORM_BUFFER:
+		return (piglit_is_extension_supported("GL_EXT_bindable_uniform") ||
+			piglit_is_extension_supported("GL_ARB_uniform_buffer_object"));
+	}
+
+	abort();
+}
+
+static void
+test_copy(GLenum from, GLenum to)
+{
+	GLuint bufs[2];
+	uint8_t data[8];
+	uint8_t bad_data[8];
+	void *ptr;
+	int i;
+
+	glGenBuffers(2, bufs);
+
+	for (i = 0; i < ARRAY_SIZE(data); i++)
+		data[i] = i;
+
+	memset(bad_data, 0xd0, sizeof(bad_data));
+
+	glBindBuffer(from, bufs[0]);
+	glBufferData(from, sizeof(data), data, GL_DYNAMIC_DRAW);
+	glBindBuffer(to, bufs[1]);
+	glBufferData(to, sizeof(bad_data), bad_data, GL_DYNAMIC_DRAW);
+
+	glCopyBufferSubData(from, to, 0, 0, sizeof(data));
+	ptr = glMapBuffer(to, GL_READ_ONLY);
+	if (memcmp(ptr, data, sizeof(data))) {
+		fprintf(stderr, "data not copied\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+	glUnmapBuffer(to);
+
+	glDeleteBuffers(2, bufs);
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	int i, j;
+	GLenum targets[] = {
+		GL_ARRAY_BUFFER,
+		GL_COPY_READ_BUFFER,
+		GL_COPY_WRITE_BUFFER,
+		GL_ELEMENT_ARRAY_BUFFER,
+		GL_PIXEL_PACK_BUFFER,
+		GL_PIXEL_UNPACK_BUFFER,
+		GL_TEXTURE_BUFFER,
+		GL_TRANSFORM_FEEDBACK_BUFFER,
+		GL_UNIFORM_BUFFER,
+	};
+
+	piglit_require_extension("GL_ARB_copy_buffer");
+
+	for (i = 0; i < ARRAY_SIZE(targets); i++) {
+		GLenum from = targets[i];
+
+		if (!supported(from))
+			continue;
+
+		for (j = 0; j < ARRAY_SIZE(targets); j++) {
+			GLenum to = targets[j];
+
+			if (from == to)
+				continue;
+			if (!supported(to))
+				continue;
+
+			test_copy(from, to);
+		}
+	}
+
+	piglit_report_result(PIGLIT_PASS);
+}