[Piglit] [PATCH 05/13] arb_shader_storage_buffer_object: add test for GL_MAX_SHADER_STORAGE_BUFFER_SIZE

Samuel Iglesias Gonsalvez siglesias at igalia.com
Wed May 13 23:17:17 PDT 2015


Signed-off-by: Samuel Iglesias Gonsalvez <siglesias at igalia.com>
---
 tests/all.py                                       |  12 ++
 .../CMakeLists.gl.txt                              |   1 +
 .../maxshaderstorageblocksize.c                    | 240 +++++++++++++++++++++
 3 files changed, 253 insertions(+)
 create mode 100644 tests/spec/arb_shader_storage_buffer_object/maxshaderstorageblocksize.c

diff --git a/tests/all.py b/tests/all.py
index 2c1664e..a0b26fd 100755
--- a/tests/all.py
+++ b/tests/all.py
@@ -4035,6 +4035,18 @@ with profile.group_manager(
         grouptools.join('spec', 'arb_shader_storage_buffer_object')) as g:
     g(['arb_shader_storage_buffer_object-minmax'], 'minmax')
     g(['arb_shader_storage_buffer_object-rendering'], 'rendering')
+    g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize '], 'maxshaderstorageblocksize')
+
+with profile.group_manager(
+        PiglitGLTest,
+        grouptools.join('spec', 'arb_shader_storage_buffer_object',
+                        'maxshaderstorageblocksize')) as g:
+    g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize', 'vs'], 'vs')
+    g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize', 'vsexceed'],
+      'vsexceed')
+    g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize', 'fs'], 'fs')
+    g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize', 'fsexceed'],
+      'fsexceed')
 
 with profile.group_manager(
         PiglitGLTest,
diff --git a/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt b/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
index 7f38b4b..ee2f51a 100644
--- a/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
@@ -10,5 +10,6 @@ link_libraries (
 
 piglit_add_executable (arb_shader_storage_buffer_object-minmax minmax.c)
 piglit_add_executable (arb_shader_storage_buffer_object-rendering rendering.c)
+piglit_add_executable (arb_shader_storage_buffer_object-maxshaderstorageblocksize maxshaderstorageblocksize.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_shader_storage_buffer_object/maxshaderstorageblocksize.c b/tests/spec/arb_shader_storage_buffer_object/maxshaderstorageblocksize.c
new file mode 100644
index 0000000..90f4a8d
--- /dev/null
+++ b/tests/spec/arb_shader_storage_buffer_object/maxshaderstorageblocksize.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright © 2015 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 maxshaderstorageblocksize.c
+ *
+ * Tests linking and drawing with shader storage buffer objects of size
+ * MAX_SHADER_STORAGE_BLOCK_SIZE.
+ *
+ * Based on ARB_uniform_buffer_object's maxuniformblocksize.c
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 20;
+
+	config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static enum {
+	VS,
+	VS_EXCEED,
+	FS,
+	FS_EXCEED,
+} mode;
+
+static void
+usage(const char *name)
+{
+	fprintf(stderr, "usage: %s <vs | vsexceed | fs | fsexceed>\n",
+		name);
+	piglit_report_result(PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	const char *vs_ssbo_template =
+		"#extension GL_ARB_shader_storage_buffer_object : enable\n"
+		"#extension GL_ARB_uniform_buffer_object : enable\n"
+		"\n"
+		"varying vec4 vary;"
+		"\n"
+		"layout(std140) buffer ssbo {\n"
+		"	vec4 v[%d];\n"
+		"};\n"
+		"uniform int i;\n"
+		"\n"
+		"void main() {\n"
+		"	gl_Position = gl_Vertex;\n"
+		"	vary = v[i];\n"
+		"}\n";
+
+	const char *fs_template =
+		"#extension GL_ARB_shader_storage_buffer_object : enable\n"
+		"\n"
+		"varying vec4 vary;"
+		"\n"
+		"void main() {\n"
+		"	gl_FragColor = vary;\n"
+		"}\n";
+
+	const char *vs_template =
+		"#extension GL_ARB_shader_storage_buffer_object : enable\n"
+		"\n"
+		"void main() {\n"
+		"	gl_Position = gl_Vertex;\n"
+		"}\n";
+
+	const char *fs_ssbo_template =
+		"#extension GL_ARB_shader_storage_buffer_object : enable\n"
+		"#extension GL_ARB_uniform_buffer_object : enable\n"
+		"\n"
+		"layout(std140) buffer ssbo {\n"
+		"	vec4 v[%d];\n"
+		"};\n"
+		"uniform int i;\n"
+		"\n"
+		"void main() {\n"
+		"	gl_FragColor = v[i];\n"
+		"}\n";
+
+	char *vs_source, *fs_source;
+	GLint max_size, vec4s, i_location;
+	GLuint vs, fs, prog, bo;
+	GLenum target;
+	float *data;
+	size_t size;
+	bool pass = true;
+	bool link_should_fail;
+	const float green[4] = { 0, 1, 0, 0 };
+	int test_index;
+
+	piglit_require_extension("GL_ARB_shader_storage_buffer_object");
+	piglit_require_extension("GL_ARB_uniform_buffer_object");
+
+	glGetIntegerv(GL_MAX_SHADER_STORAGE_BLOCK_SIZE, &max_size);
+	printf("Max shader storage block size: %d\n", max_size);
+	vec4s = max_size / 4 / 4;
+
+	switch (mode) {
+	case VS:
+		target = GL_VERTEX_SHADER;
+		link_should_fail = false;
+		test_index = vec4s - 1;
+		break;
+	case VS_EXCEED:
+		target = GL_VERTEX_SHADER;
+		link_should_fail = true;
+		vec4s++;
+		test_index = vec4s - 2;
+		break;
+	case FS:
+		target = GL_FRAGMENT_SHADER;
+		link_should_fail = false;
+		test_index = vec4s - 1;
+		break;
+	case FS_EXCEED:
+		target = GL_FRAGMENT_SHADER;
+		link_should_fail = true;
+		vec4s++;
+		test_index = vec4s - 2;
+		break;
+	default:
+		assert(false);
+		target = GL_NONE;
+		link_should_fail = false;
+	}
+
+	switch (target) {
+	case GL_VERTEX_SHADER:
+		asprintf(&vs_source, vs_ssbo_template, vec4s);
+		asprintf(&fs_source, "%s", fs_template);
+		printf("Testing VS with shader storage block vec4 v[%d]\n", vec4s);
+		break;
+	case GL_FRAGMENT_SHADER:
+		asprintf(&vs_source, "%s", vs_template);
+		asprintf(&fs_source, fs_ssbo_template, vec4s);
+		printf("Testing FS with shader storage block vec4 v[%d]\n", vec4s);
+		break;
+	default:
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
+	fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
+
+	prog = glCreateProgram();
+	glAttachShader(prog, vs);
+	glAttachShader(prog, fs);
+	glLinkProgram(prog);
+
+	if (link_should_fail) {
+		if (!piglit_link_check_status_quiet(prog)) {
+			printf("Failed to link with shader storage block vec4 "
+			       "v[%d]\n", vec4s);
+			piglit_report_result(PIGLIT_PASS);
+		}
+	} else {
+		if (!piglit_link_check_status_quiet(prog)) {
+			fprintf(stderr,
+				"Failed to link with shader storage block vec4 "
+				"v[%d]\n", vec4s);
+			return PIGLIT_FAIL;
+		}
+	}
+
+	size = vec4s * 4 * sizeof(float);
+	glGenBuffers(1, &bo);
+	glBindBuffer(GL_SHADER_STORAGE_BUFFER, bo);
+	glBufferData(GL_SHADER_STORAGE_BUFFER, size, NULL, GL_DYNAMIC_DRAW);
+	data = glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_READ_WRITE);
+	memset(data, 0, size);
+
+	/* The whole shader storage buffer will be zeros, except for the
+	 * entry at v[test_index] which will be green.
+	 */
+	data[test_index * 4 + 0] = green[0];
+	data[test_index * 4 + 1] = green[1];
+	data[test_index * 4 + 2] = green[2];
+	data[test_index * 4 + 3] = green[3];
+	glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
+
+	glUseProgram(prog);
+	i_location = glGetUniformLocation(prog, "i");
+	glUniform1i(i_location, test_index);
+
+	glShaderStorageBlockBinding(prog, 0, 0);
+	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, bo);
+	piglit_draw_rect(-1, -1, 2, 2);
+
+	pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
+
+	glDeleteProgram(prog);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	if (argc < 2)
+		usage(argv[0]);
+
+	if (strcmp(argv[1], "vs") == 0)
+		mode = VS;
+	else if (strcmp(argv[1], "vsexceed") == 0)
+		mode = VS_EXCEED;
+	else if (strcmp(argv[1], "fs") == 0)
+		mode = FS;
+	else if (strcmp(argv[1], "fsexceed") == 0)
+		mode = FS_EXCEED;
+	else
+		usage(argv[0]);
+}
-- 
2.1.0



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