[Piglit] [PATCH 7/8] GL_ARB_texture_buffer_object: Test for a bug in i965 with glBufferData().

[Eric Anholt]

---
 tests/all.tests                                    |   1 +
 .../arb_texture_buffer_object/CMakeLists.gl.txt    |   1 +
 tests/spec/arb_texture_buffer_object/data-sync.c   | 102 +++++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 tests/spec/arb_texture_buffer_object/data-sync.c

diff --git a/tests/all.tests b/tests/all.tests
index f08878e..beeaa84 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -1406,6 +1406,7 @@ add_plain_test(arb_explicit_attrib_location, 'glsl-explicit-location-05')
 
 arb_texture_buffer_object = Group()
 spec['ARB_texture_buffer_object'] = arb_texture_buffer_object
+arb_texture_buffer_object['data-sync'] = concurrent_test('arb_texture_buffer_object-data-sync')
 arb_texture_buffer_object['dlist'] = concurrent_test('arb_texture_buffer_object-dlist')
 arb_texture_buffer_object['formats (FS, 3.1 core)'] = concurrent_test('arb_texture_buffer_object-formats fs core')
 arb_texture_buffer_object['formats (VS, 3.1 core)'] = concurrent_test('arb_texture_buffer_object-formats vs core')
diff --git a/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt b/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
index e4c616d..5019e52 100644
--- a/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_buffer_object/CMakeLists.gl.txt
@@ -10,6 +10,7 @@ link_libraries (
 	${OPENGL_glu_LIBRARY}
 )
 
+piglit_add_executable (arb_texture_buffer_object-data-sync data-sync.c)
 piglit_add_executable (arb_texture_buffer_object-dlist dlist.c)
 piglit_add_executable (arb_texture_buffer_object-formats formats.c)
 piglit_add_executable (arb_texture_buffer_object-get get.c)
diff --git a/tests/spec/arb_texture_buffer_object/data-sync.c b/tests/spec/arb_texture_buffer_object/data-sync.c
new file mode 100644
index 0000000..310156c
--- /dev/null
+++ b/tests/spec/arb_texture_buffer_object/data-sync.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright © 2013 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 data-sync.c
+ *
+ * Tests that glBufferData() synchronizes correctly with TBO rendering.
+ *
+ * Caught a bug in the i965 driver after a core Mesa refactor.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+	config.supports_gl_compat_version = 10;
+	config.supports_gl_core_version = 31;
+
+	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+PIGLIT_GL_TEST_CONFIG_END
+
+enum piglit_result
+piglit_display(void)
+{
+	static const char *vs_source =
+		"#version 140\n"
+		"in vec4 piglit_vertex;\n"
+		"void main()\n"
+		"{\n"
+		"	gl_Position = piglit_vertex;\n"
+		"}\n";
+
+	static const char *fs_source =
+		"#version 140\n"
+		"uniform samplerBuffer s;\n"
+		"void main()\n"
+		"{\n"
+		"	gl_FragColor = texelFetch(s, 0);\n"
+		"}\n";
+
+	bool pass = true;
+	GLuint tex, bo;
+	GLuint prog;
+	float green[] = {0, 1, 0, 0};
+	float blue[] =  {0, 0, 1, 0};
+	uint8_t g_rgba8[] = {0x00, 0xff, 0x00, 0x00};
+	uint8_t b_rgba8[] = {0x00, 0x00, 0xff, 0x00};
+
+	prog = piglit_build_simple_program(vs_source, fs_source);
+	glUseProgram(prog);
+
+        glGenBuffers(1, &bo);
+        glBindBuffer(GL_TEXTURE_BUFFER, bo);
+	glBufferData(GL_TEXTURE_BUFFER, sizeof(g_rgba8), g_rgba8,
+		     GL_STREAM_DRAW);
+
+	glGenTextures(1, &tex);
+	glBindTexture(GL_TEXTURE_BUFFER, tex);
+	glTexBuffer(GL_TEXTURE_BUFFER, GL_RGBA8, bo);
+
+	piglit_draw_rect(-1, -1, 1, 2);
+	glBufferData(GL_TEXTURE_BUFFER, sizeof(b_rgba8), b_rgba8,
+		     GL_STREAM_DRAW);
+	piglit_draw_rect(0, -1, 1, 2);
+
+	pass = pass && piglit_probe_rect_rgba(0, 0,
+					      piglit_width / 2, piglit_height,
+					      green);
+	pass = pass && piglit_probe_rect_rgba(piglit_width / 2, 0,
+					      piglit_width / 2, piglit_height,
+					      blue);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	piglit_require_GLSL_version(140);
+	if (piglit_get_gl_version() < 31)
+		piglit_require_extension("GL_ARB_texture_buffer_object");
+}
-- 
1.8.4.rc3