[Piglit] [PATCH 13/13] arb_shader_atomic_counters: Test the atomicity of atomic built-in functions.
Francisco Jerez
currojerez at riseup.net
Tue Oct 8 03:14:17 CEST 2013
---
tests/all.tests | 1 +
.../arb_shader_atomic_counters/CMakeLists.gl.txt | 1 +
tests/spec/arb_shader_atomic_counters/unique-id.c | 219 +++++++++++++++++++++
3 files changed, 221 insertions(+)
create mode 100644 tests/spec/arb_shader_atomic_counters/unique-id.c
diff --git a/tests/all.tests b/tests/all.tests
index 1c5dc9c..b928e91 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -3180,6 +3180,7 @@ arb_shader_atomic_counters['max-counters'] = concurrent_test('arb_shader_atomic_
arb_shader_atomic_counters['minmax'] = concurrent_test('arb_shader_atomic_counters-minmax')
arb_shader_atomic_counters['multiple-defs'] = concurrent_test('arb_shader_atomic_counters-multiple-defs')
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')
profile.tests['hiz'] = hiz
profile.tests['fast_color_clear'] = fast_color_clear
diff --git a/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt b/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
index 8eb3692..25b56ba 100644
--- a/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_atomic_counters/CMakeLists.gl.txt
@@ -20,5 +20,6 @@ add_executable (arb_shader_atomic_counters-max-counters max-counters.c common.c)
add_executable (arb_shader_atomic_counters-minmax minmax.c common.c)
add_executable (arb_shader_atomic_counters-multiple-defs multiple-defs.c common.c)
add_executable (arb_shader_atomic_counters-semantics semantics.c common.c)
+add_executable (arb_shader_atomic_counters-unique-id unique-id.c common.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_shader_atomic_counters/unique-id.c b/tests/spec/arb_shader_atomic_counters/unique-id.c
new file mode 100644
index 0000000..2858ad3
--- /dev/null
+++ b/tests/spec/arb_shader_atomic_counters/unique-id.c
@@ -0,0 +1,219 @@
+/*
+ * 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 unique-id.c
+ *
+ * Tests that concurrent execution of atomic operations on the same
+ * counter yield unique values for each vertex or fragment shader
+ * thread.
+ */
+
+#include "common.h"
+
+#define L 256
+#define N (L * L)
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_core_version = 31;
+
+ config.window_width = L;
+ config.window_height = L;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static bool
+check(int dx, int dy, uint32_t start_value, uint32_t end_value)
+{
+ const uint32_t base = MIN2(start_value, end_value);
+ const uint32_t size = MAX2(start_value, end_value) - base;
+ uint32_t pixels[L][L];
+ uint32_t *frequency = malloc(size * sizeof(uint32_t));
+ int x, y;
+
+ memset(frequency, 0, size * sizeof(uint32_t));
+ glReadPixels(0, 0, L, L, GL_RED_INTEGER, GL_UNSIGNED_INT, pixels);
+
+ for (y = 0; y < L; y += dy) {
+ for (x = 0; x < L; x += dx) {
+ uint32_t v = pixels[y][x] - base;
+
+ if (v >= size) {
+ printf("Probe value at (%d, %d)\n", x, y);
+ printf(" Observed: 0x%08x\n", v);
+ printf(" Value outside expected window.\n");
+ return false;
+ }
+
+ if (size > 1 && frequency[v]++) {
+ printf("Probe value at (%d, %d)\n", x, y);
+ printf(" Observed: 0x%08x\n", v);
+ printf(" Value not unique.\n");
+ return false;
+ }
+ }
+ }
+
+ free(frequency);
+ return true;
+}
+
+static bool
+run_test_vertex(const char *op, uint32_t start_value, uint32_t end_value)
+{
+ const char *fs_source = "#version 140\n"
+ "smooth in vec4 vcolor;\n"
+ "out ivec4 fcolor;\n"
+ "void main() {\n"
+ " fcolor.x = int(round(vcolor.x));\n"
+ "}\n";
+ const char *vs_template = "#version 140\n"
+ "#extension GL_ARB_shader_atomic_counters : enable\n"
+ "\n"
+ "#define OP %s\n"
+ "\n"
+ "layout(binding = 0, offset = 0) uniform atomic_uint x;\n"
+ "in vec4 piglit_vertex;\n"
+ "smooth out vec4 vcolor;\n"
+ "\n"
+ "void main() {\n"
+ " uint y = OP(x);"
+ " vcolor.x = float(y);\n"
+ " gl_Position = piglit_vertex;\n"
+ "}\n";
+ char *vs_source;
+ GLuint prog = glCreateProgram();
+ int ret;
+
+ ret = asprintf(&vs_source, vs_template, op);
+ assert(ret > 0);
+
+ ret = atomic_counters_compile(prog, GL_FRAGMENT_SHADER, fs_source) &&
+ atomic_counters_compile(prog, GL_VERTEX_SHADER, vs_source) &&
+ atomic_counters_draw_rect(prog, 1, &start_value) &&
+ check(L - 1, L - 1, start_value, end_value);
+
+ free(vs_source);
+ glDeleteProgram(prog);
+ return ret;
+}
+
+static bool
+run_test_fragment(const char *op, uint32_t start_value, uint32_t end_value)
+{
+ const char *fs_template = "#version 140\n"
+ "#extension GL_ARB_shader_atomic_counters : enable\n"
+ "\n"
+ "#define OP %s\n"
+ "\n"
+ "layout(binding = 0, offset = 0) uniform atomic_uint x;\n"
+ "out ivec4 fcolor;\n"
+ "\n"
+ "void main() {\n"
+ " fcolor.x = int(OP(x));\n"
+ "}\n";
+ char *fs_source;
+ const char *vs_source = "#version 140\n"
+ "in vec4 piglit_vertex;\n"
+ "\n"
+ "void main() {\n"
+ " gl_Position = piglit_vertex;\n"
+ "}\n";
+ GLuint prog = glCreateProgram();
+ int ret;
+
+ ret = asprintf(&fs_source, fs_template, op);
+ assert(ret > 0);
+
+ ret = atomic_counters_compile(prog, GL_FRAGMENT_SHADER, fs_source) &&
+ atomic_counters_compile(prog, GL_VERTEX_SHADER, vs_source) &&
+ atomic_counters_draw_rect(prog, 1, &start_value) &&
+ check(1, 1, start_value, end_value);
+
+ free(fs_source);
+ glDeleteProgram(prog);
+ return ret;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ GLuint fb, rb, buffer;
+
+ piglit_require_gl_version(31);
+ piglit_require_extension("GL_ARB_shader_atomic_counters");
+
+ glGenFramebuffers(1, &fb);
+ glGenRenderbuffers(1, &rb);
+
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
+ glBindRenderbuffer(GL_RENDERBUFFER, rb);
+
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_R32UI, L, L);
+ glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER, rb);
+
+ glGenBuffers(1, &buffer);
+ glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, buffer);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ enum piglit_result status = PIGLIT_PASS;
+
+ atomic_counters_subtest(&status, GL_VERTEX_SHADER,
+ "Vertex atomic increment atomicity",
+ run_test_vertex,
+ "atomicCounterIncrement", 0, 4);
+
+ atomic_counters_subtest(&status, GL_VERTEX_SHADER,
+ "Vertex atomic decrement atomicity",
+ run_test_vertex,
+ "atomicCounterDecrement", 4, 0);
+
+ atomic_counters_subtest(&status, GL_VERTEX_SHADER,
+ "Vertex atomic read atomicity",
+ run_test_vertex,
+ "atomicCounter", 100, 101);
+
+ atomic_counters_subtest(&status, GL_FRAGMENT_SHADER,
+ "Fragment atomic increment atomicity",
+ run_test_fragment,
+ "atomicCounterIncrement", 0, N);
+
+ atomic_counters_subtest(&status, GL_FRAGMENT_SHADER,
+ "Fragment atomic decrement atomicity",
+ run_test_fragment,
+ "atomicCounterDecrement", N, 0);
+
+ atomic_counters_subtest(&status, GL_FRAGMENT_SHADER,
+ "Fragment atomic read atomicity",
+ run_test_fragment,
+ "atomicCounter", 0, 1);
+
+ piglit_report_result(status);
+ return status;
+}
--
1.8.3.4
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