[Piglit] [PATCH 2/3] arb_compute_shader: Test spilling with large block sizes.

[Bas Nieuwenhuizen]

Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---
 tests/all.py                                     |   1 +
 tests/spec/arb_compute_shader/CMakeLists.gl.txt  |   1 +
 tests/spec/arb_compute_shader/large-block-size.c | 106 +++++++++++++++++++++++
 3 files changed, 108 insertions(+)
 create mode 100644 tests/spec/arb_compute_shader/large-block-size.c

diff --git a/tests/all.py b/tests/all.py
index da1c257..72c540c 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -4255,6 +4255,7 @@ with profile.group_manager(
     g(['arb_compute_shader-render-and-compute'], 'render-and-compute')
     g(['arb_compute_shader-zero-dispatch-size'], 'zero-dispatch-size')
     g(['arb_compute_shader-conditional-dispatch'], 'conditional-dispatch')
+    g(['arb_compute_shader-large-block-size'], 'large-block-size')
 
 with profile.group_manager(
         PiglitGLTest,
diff --git a/tests/spec/arb_compute_shader/CMakeLists.gl.txt b/tests/spec/arb_compute_shader/CMakeLists.gl.txt
index 02ede80..a264626 100644
--- a/tests/spec/arb_compute_shader/CMakeLists.gl.txt
+++ b/tests/spec/arb_compute_shader/CMakeLists.gl.txt
@@ -19,5 +19,6 @@ piglit_add_executable (arb_compute_shader-local-id local-id.c ${depends})
 piglit_add_executable (arb_compute_shader-render-and-compute render-and-compute.c ${depends})
 piglit_add_executable (arb_compute_shader-zero-dispatch-size zero-dispatch-size.c ${depends})
 piglit_add_executable (arb_compute_shader-conditional-dispatch conditional-dispatch.c)
+piglit_add_executable (arb_compute_shader-large-block-size large-block-size.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_compute_shader/large-block-size.c b/tests/spec/arb_compute_shader/large-block-size.c
new file mode 100644
index 0000000..e34c440
--- /dev/null
+++ b/tests/spec/arb_compute_shader/large-block-size.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2016 Bas Nieuwenhuizen
+ *
+ * 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.
+ */
+
+/*
+ * Tests that shaders with large numbers of variables can still be used with
+ * large blocks. The result has two parts: it should not hang / show VM faults
+ * and it should give the right solution.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_core_version = 42;
+
+	config.window_width = 320;
+	config.window_height = 320;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+const char *cs_source =
+	"#version 420\n"
+	"#extension GL_ARB_compute_shader : require\n"
+	"#extension GL_ARB_shader_storage_buffer_object : require\n"
+	"layout (local_size_x = 1024, local_size_y = 1, local_size_z = 1) in;\n"
+	"layout(binding = 0, std430) buffer Result {\n"
+	"	int result[1024];\n"
+	"};\n"
+	"uniform int a, b, c;\n"
+	"void main() {\n"
+	"	int arr[65];\n"
+	"	arr[0] = a;\n"
+	"	for(int i = 1; i < 65; ++i)\n"
+	"		arr[i] = (arr[i - 1] * a + b) % c;\n"
+	"	for(int i = 63; i >= 0; --i)\n"
+	"		arr[i] = (arr[i + 1] * a + b) % c;\n"
+	"	result[gl_GlobalInvocationID.x] = arr[0];\n"
+	"}\n";
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	unsigned shader, prog, buffer;
+	int *data;
+	int i;
+	bool result = true;
+
+	piglit_require_gl_version(42);
+	piglit_require_extension("GL_ARB_compute_shader");
+	piglit_require_extension("GL_ARB_shader_storage_buffer_object");
+
+	shader = piglit_compile_shader_text(GL_COMPUTE_SHADER, cs_source);
+	prog = piglit_link_simple_program_multiple_shaders(shader, 0);
+	glDeleteShader(shader);
+
+	glGenBuffers(1, &buffer);
+	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, buffer);
+	glBufferData(GL_SHADER_STORAGE_BUFFER, 1024 * sizeof(uint32_t), NULL,
+	             GL_DYNAMIC_DRAW);
+
+	glUseProgram(prog);
+	glUniform1i(glGetUniformLocation(prog, "a"), 3);
+	glUniform1i(glGetUniformLocation(prog, "b"), 557);
+	glUniform1i(glGetUniformLocation(prog, "c"), 65537);
+
+	glDispatchCompute(1, 1, 1);
+
+	data = (int*)glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_READ_ONLY);
+	for (i = 0; i < 1024; ++i)
+		if (data[i] != 2967)
+			result = false;
+
+	glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
+
+	glDeleteProgram(prog);
+	glDeleteBuffers(1, &buffer);
+
+	piglit_report_result(result ? PIGLIT_PASS : PIGLIT_FAIL);
+}
-- 
2.8.0