[Piglit] [PATCH] arb_shader_atomic_counters: Test respecification of a bound ABO

[Chris Forbes]

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 tests/all.py                                       |   1 +
 .../arb_shader_atomic_counters/CMakeLists.gl.txt   |   1 +
 .../arb_shader_atomic_counters/respecify-buffer.c  | 115 +++++++++++++++++++++
 3 files changed, 117 insertions(+)
 create mode 100644 tests/spec/arb_shader_atomic_counters/respecify-buffer.c

diff --git a/tests/all.py b/tests/all.py
index 665c88b..31704aa 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -4233,6 +4233,7 @@ arb_shader_atomic_counters['multiple-defs'] = concurrent_test('arb_shader_atomic
 arb_shader_atomic_counters['semantics'] = concurrent_test('arb_shader_atomic_counters-semantics')
 arb_shader_atomic_counters['unique-id'] = concurrent_test('arb_shader_atomic_counters-unique-id')
 arb_shader_atomic_counters['unused-result'] = concurrent_test('arb_shader_atomic_counters-unused-result')
+arb_shader_atomic_counters['respecify-buffer'] = concurrent_test('arb_shader_atomic_counters-respecify-buffer')
 
 arb_derivative_control = {}
 spec['ARB_derivative_control'] = arb_derivative_control
diff --git a/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt b/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
index 0f678d1..386b794 100644
--- a/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
@@ -22,5 +22,6 @@ piglit_add_executable (arb_shader_atomic_counters-multiple-defs multiple-defs.c
 piglit_add_executable (arb_shader_atomic_counters-semantics semantics.c common.c)
 piglit_add_executable (arb_shader_atomic_counters-unique-id unique-id.c common.c)
 piglit_add_executable (arb_shader_atomic_counters-unused-result unused-result.c common.c)
+piglit_add_executable (arb_shader_atomic_counters-respecify-buffer respecify-buffer.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_shader_atomic_counters/respecify-buffer.c b/tests/spec/arb_shader_atomic_counters/respecify-buffer.c
new file mode 100644
index 0000000..c932e3e
--- /dev/null
+++ b/tests/spec/arb_shader_atomic_counters/respecify-buffer.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright © 2014 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 respecify-buffer.c
+ *
+ * Tests that the required state is reemitted when the buffer backing
+ * an atomic counter is respecified; taking care not to dirty too much
+ * other state which would mask flagging problems.
+ *
+ * This demonstrates a mesa bug.
+ */
+
+#include "common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+        config.supports_gl_core_version = 31;
+
+        config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+int data[] = { 0, 1, 2, 3 };
+
+float red[] = { 1, 0, 0 };
+float green[] = { 0, 1, 0 };
+float blue[] = { 0, 0, 1 };
+float white[] = { 1, 1, 1 };
+
+enum piglit_result
+piglit_display(void)
+{
+	bool pass = true;
+	int i;
+
+	glViewport(0, 0, piglit_width, piglit_height);
+
+	glClearColor(0.2, 0.2, 0.2, 0.2);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	for (i = 0; i < 4; i++) {
+		/* respecify the buffer */
+		glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(*data),
+			     &data[i], GL_STATIC_DRAW);
+
+		piglit_draw_rect(i % 2 - 1, i / 2 - 1, 1, 1);
+	}
+
+	pass = piglit_probe_pixel_rgb(piglit_width / 4,
+				      piglit_height / 4, red);
+	pass = piglit_probe_pixel_rgb(3 * piglit_width / 4,
+				      piglit_height / 4, green);
+	pass = piglit_probe_pixel_rgb(piglit_width / 4,
+				      3 * piglit_height / 4, blue);
+	pass = piglit_probe_pixel_rgb(3 * piglit_width / 4,
+				      3 * piglit_height / 4, white);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLuint prog;
+	GLuint abo;
+
+	piglit_require_extension("GL_ARB_shader_atomic_counters");
+
+	prog = piglit_build_simple_program(
+		"#version 140\n"
+		"in vec4 piglit_vertex;\n"
+		"void main() {\n"
+		"	gl_Position = piglit_vertex;\n"
+		"}\n",
+
+		"#version 140\n"
+		"#extension GL_ARB_shader_atomic_counters: require\n"
+		"layout(binding=0) uniform atomic_uint x;\n"
+		"void main() {\n"
+		"	uint n = atomicCounter(x);\n"
+		"	if (n == 0u) gl_FragColor = vec4(1,0,0,0);\n"
+		"	else if (n == 1u) gl_FragColor = vec4(0,1,0,0);\n"
+		"	else if (n == 2u) gl_FragColor = vec4(0,0,1,0);\n"
+		"	else gl_FragColor = vec4(1,1,1,0);\n"
+		"}\n");
+
+	glUseProgram(prog);
+
+	glGenBuffers(1, &abo);
+	glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, abo);
+	glBufferData(GL_ATOMIC_COUNTER_BUFFER, 4, NULL, GL_STATIC_DRAW);
+	glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, abo);
+}
-- 
2.1.2