From: Nicolai Hähnle <nicolai.haeh...@amd.com>
Test the extremes of # of GS output vertices / components per GS input
primitive.
Existing tests only cover cases of high # of components per vertex, but
not cases of low # of components per vertex and high # of output vertices.
---
tests/opengl.py | 1 +
.../execution/geometry/CMakeLists.gl.txt | 1 +
.../execution/geometry/gs-max-output.cpp | 549 ++++++++++++++++++
3 files changed, 551 insertions(+)
create mode 100644 tests/spec/glsl-1.50/execution/geometry/gs-max-output.cpp
diff --git a/tests/opengl.py b/tests/opengl.py
index c599eb180..903a95809 100644
--- a/tests/opengl.py
+++ b/tests/opengl.py
@@ -1398,20 +1398,21 @@ with profile.test_list.group_manager(
os.path.join('spec', 'glsl-1.50', 'minimum-maximums.txt')],
'built-in constants',
override_class=BuiltInConstantsTest)
g(['built-in-constants',
os.path.join('spec', 'glsl-1.50', 'minimum-maximums-compat.txt')],
'built-in constants compatibility',
override_class=BuiltInConstantsTest)
g(['glsl-1.50-gs-emits-too-few-verts'], 'gs-emits-too-few-verts')
g(['glsl-1.50-geometry-end-primitive-optional-with-points-out'],
'gs-end-primitive-optional-with-points-out')
+ g(['glsl-1.50-gs-max-output', '-scan', '1', '20'], 'gs-max-output')
g(['glsl-1.50-gs-max-output-components'], 'gs-max-output-components')
g(['glsl-1.50-getshaderiv-may-return-GS'], 'getshaderiv-may-return-GS')
g(['glsl-1.50-query-gs-prim-types'], 'query-gs-prim-types')
g(['glsl-1.50-transform-feedback-type-and-size'],
'transform-feedback-type-and-size')
g(['glsl-1.50-transform-feedback-vertex-id'],
'transform-feedback-vertex-id')
g(['glsl-1.50-transform-feedback-builtins'], 'transform-feedback-builtins')
for draw in ['', 'indexed']:
diff --git a/tests/spec/glsl-1.50/execution/geometry/CMakeLists.gl.txt
b/tests/spec/glsl-1.50/execution/geometry/CMakeLists.gl.txt
index 0d76adc06..c6d21f080 100644
--- a/tests/spec/glsl-1.50/execution/geometry/CMakeLists.gl.txt
+++ b/tests/spec/glsl-1.50/execution/geometry/CMakeLists.gl.txt
@@ -13,14 +13,15 @@ piglit_add_executable (glsl-1.50-geometry-end-primitive
end-primitive.c)
piglit_add_executable
(glsl-1.50-geometry-end-primitive-optional-with-points-out
geometry-end-primitive-optional-with-points-out.c)
piglit_add_executable (glsl-1.50-geometry-primitive-id-restart
primitive-id-restart.c)
piglit_add_executable (glsl-1.50-geometry-primitive-types primitive-types.c)
piglit_add_executable (glsl-1.50-geometry-tri-strip-ordering-with-prim-restart
tri-strip-ordering-with-prim-restart.c)
piglit_add_executable (glsl-1.50-gs-emits-too-few-verts
gs-emits-too-few-verts.c)
piglit_add_executable (glsl-1.50-getshaderiv-may-return-GS
getshaderiv-may-return-GS.c)
piglit_add_executable (glsl-1.50-gs-mismatch-prim-type gs-mismatch-prim-type.c)
piglit_add_executable (glsl-1.50-query-gs-prim-types query-gs-prim-types.c)
piglit_add_executable (glsl-1.50-gs-input-layout-qualifiers
gs-input-layout-qualifiers.c)
piglit_add_executable (glsl-1.50-gs-output-layout-qualifiers
gs-output-layout-qualifiers.c)
+piglit_add_executable (glsl-1.50-gs-max-output gs-max-output.cpp)
piglit_add_executable (glsl-1.50-gs-max-output-components
gs-max-output-components.c)
piglit_add_executable (glsl-1.50-transform-feedback-type-and-size
transform-feedback-type-and-size.c)
piglit_add_executable (glsl-1.50-transform-feedback-vertex-id
transform-feedback-vertex-id.c)
piglit_add_executable (glsl-1.50-transform-feedback-builtins
transform-feedback-builtins.c)
diff --git a/tests/spec/glsl-1.50/execution/geometry/gs-max-output.cpp
b/tests/spec/glsl-1.50/execution/geometry/gs-max-output.cpp
new file mode 100644
index 000000000..eb9292655
--- /dev/null
+++ b/tests/spec/glsl-1.50/execution/geometry/gs-max-output.cpp
@@ -0,0 +1,549 @@
+/*
+ * Copyright (c) 2018 Advanced Micro Devices
+ *
+ * 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 gs-max-output.cpp
+ *
+ * Stress the limits of what a geometry shader can output using a generic
+ * geometry shader with points as input and output primitives, allowing
+ * arbitrary:
+ * - number of input instances (instanced draws)
+ * - number of input points per instance
+ * - number of invocations (GS instances)
+ * - number of output vertices per invocation
+ * - number of output components per vertex
+ */
+
+#include "piglit-util-gl.h"
+
+#include <map>
+#include <vector>
+
+#define WINDOW_SIZE 256
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 32;
+ config.supports_gl_core_version = 32;
+ config.window_width = WINDOW_SIZE;
+ config.window_height = WINDOW_SIZE;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+ config.khr_no_error_support = PIGLIT_NO_ERRORS;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+#define PASTE(x) #x
+#define STR(x) PASTE(x)
+
+struct testcase {
+ unsigned num_instances; /* draw instances */
+ unsigned num_points; /* draw size / count */
+ unsigned num_invocations; /* GS invocations / instances */
+ unsigned num_outputs; /* # vertex ouput per GS invocation */
+ unsigned num_components; /* # extra components per GS output vertex */
+
+
+};
+
+struct fragmentshaderkey {
+ unsigned num_components;
+
+ bool operator<(const fragmentshaderkey &o) const {
+ return num_components < o.num_components;
+ }
+};
+
+struct geometryshaderkey {
+ unsigned num_invocations;
+ unsigned num_outputs;
+ unsigned num_components;
+
+ bool operator<(const geometryshaderkey &o) const {
+ if (num_invocations < o.num_invocations)
+ return true;
+ if (num_invocations > o.num_invocations)
+ return false;
+ if (num_outputs < o.num_outputs)
+ return true;
+ if (num_outputs > o.num_outputs)
+ return false;
+ return num_components < o.num_components;
+ }
+};
+
+static std::map<fragmentshaderkey, GLuint> fragmentshaders;
+static std::map<geometryshaderkey, GLuint> testprograms;
+
+static const struct testcase default_testcase = {
+ .num_instances = 1,
+ .num_points = 1,
+ .num_invocations = 1,
+ .num_outputs = 1,
+ .num_components = 0,
+};
+
+static GLuint vs_shader;
+static GLuint vao;
+static std::vector<testcase> testcases;
+static GLuint max_gs_invocations;
+static GLuint max_gs_out_vertices;
+static GLuint max_gs_total_out_components;
+static GLuint max_gs_out_components;
+static unsigned max_gs_out_vertices_real;
+
+static const char vs_text[] =
+ "#version 150\n"
+ "\n"
+ "uniform int u_verts_per_instance;\n"
+ "\n"
+ "out int vs_gs_id;\n"
+ "\n"
+ "void main() {\n"
+ " vs_gs_id = gl_InstanceID * u_verts_per_instance + gl_VertexID;\n"
+ "}\n";
+
+/* Those numbers really don't matter much for what we're trying to do here. */
+#define GEN_SEQUENCE \
+ "int seq_next(int x) {\n" \
+ " x = (x + 1) * 709900053;\n" \
+ " x = x ^ (x >> 17);\n" \
+ " return x;\n" \
+ "}\n"
+
+static const char gs_text[] =
+ "#version 150\n"
+ "#extension GL_ARB_gpu_shader5 : require\n"
+ "\n"
+ "#define NUM_INVOCATIONS %d\n"
+ "#define NUM_OUT_VERTICES %d\n"
+ "#define NUM_PAYLOAD_COMPONENTS %d\n"
+ "\n"
+ "layout(points, invocations = NUM_INVOCATIONS) in;\n"
+ "layout(points, max_vertices = NUM_OUT_VERTICES) out;\n"
+ "\n"
+ "in int vs_gs_id[];\n"
+ "#if NUM_PAYLOAD_COMPONENTS\n"
+ "flat out int gs_ps_data[NUM_PAYLOAD_COMPONENTS];\n"
+ "#endif\n"
+ "\n"
+ GEN_SEQUENCE
+ "\n"
+ "void main() {\n"
+ " for (int i = 0; i < NUM_OUT_VERTICES; ++i) {\n"
+ " int id = (vs_gs_id[0] * NUM_INVOCATIONS + gl_InvocationID) *
NUM_OUT_VERTICES + i;\n"
+ " int x = id %% " STR(WINDOW_SIZE) ";\n"
+ " int y = id / " STR(WINDOW_SIZE) ";\n"
+ " gl_Position.x = (float(x) + 0.5) / " STR(WINDOW_SIZE) " * 2.0 -
1.0;\n"
+ " gl_Position.y = (float(y) + 0.5) / " STR(WINDOW_SIZE) " * 2.0 -
1.0;\n"
+ " gl_Position.z = 0.0;\n"
+ " gl_Position.w = 1.0;\n"
+ "\n"
+ "#if NUM_PAYLOAD_COMPONENTS\n"
+ " int val = id;\n"
+ " for (int j = 0; j < NUM_PAYLOAD_COMPONENTS; ++j) {\n"
+ " gs_ps_data[j] = val;\n"
+ " val = seq_next(val);\n"
+ " }\n"
+ "#endif\n"
+ "\n"
+ " EmitVertex();\n"
+ " }\n"
+ "}\n";
+
+static const char fs_text[] =
+ "#version 150\n"
+ "\n"
+ "#define NUM_PAYLOAD_COMPONENTS %d\n"
+ "\n"
+ "#if NUM_PAYLOAD_COMPONENTS\n"
+ "flat in int gs_ps_data[NUM_PAYLOAD_COMPONENTS];\n"
+ "#endif\n"
+ "out vec4 out_color;\n"
+ "\n"
+ GEN_SEQUENCE
+ "\n"
+ "void main() {\n"
+ "#if NUM_PAYLOAD_COMPONENTS\n"
+ " int id = int(gl_FragCoord.y) * " STR(WINDOW_SIZE) " +
int(gl_FragCoord.x);\n"
+ " int val = id;\n"
+ " for (int j = 0; j < NUM_PAYLOAD_COMPONENTS; ++j) {\n"
+ " if (val != gs_ps_data[j]) {\n"
+ " out_color.x = 1.0;\n"
+ " out_color.y = float(j) / (NUM_PAYLOAD_COMPONENTS - 1);\n"
+ " out_color.z = float(val & 0xff) / 255;\n"
+ " out_color.w = float(gs_ps_data[j] & 0xff) / 255;\n"
+ " return;\n"
+ " }\n"
+ " val = seq_next(val);\n"
+ " }\n"
+ "#endif\n"
+ " out_color = vec4(0, 1, 0, 1);\n"
+ "}\n";
+
+static void
+print_testcase(const struct testcase *tc)
+{
+ printf("Case: instances = %u points = %u invocations = %u "
+ "outputs = %u components = %u\n",
+ tc->num_instances, tc->num_points, tc->num_invocations,
+ tc->num_outputs, tc->num_components);
+}
+
+static void
+add_testcase(const struct testcase *tc)
+{
+ if (tc->num_instances > 64 * 1024 ||
+ tc->num_points > 64 * 1024 ||
+ tc->num_invocations > 64 * 1024 ||
+ tc->num_outputs > 64 * 1024 ||
+ tc->num_components > 64 * 1024) {
+ fprintf(stderr, "Excessive test case size. Are you sure?\n");
+ print_testcase(tc);
+ exit(1);
+ }
+
+ /* Check against implementation-defined limits. */
+ if (tc->num_outputs > (unsigned)max_gs_out_vertices) {
+ fprintf(stderr, "Too many output vertices (max: %d)\n",
+ max_gs_out_vertices);
+ print_testcase(tc);
+ exit(1);
+ }
+ if (tc->num_outputs * (4 + tc->num_components) >
(unsigned)max_gs_total_out_components) {
+ fprintf(stderr, "Too many output components (max: %d)\n",
+ max_gs_total_out_components);
+ print_testcase(tc);
+ exit(1);
+ }
+ if (tc->num_invocations > (unsigned)max_gs_invocations) {
+ fprintf(stderr, "Too many GS invocations (max: %d)\n",
+ max_gs_invocations);
+ print_testcase(tc);
+ exit(1);
+ }
+
+ /* Compile GS shader and link program */
+ geometryshaderkey gskey;
+ gskey.num_invocations = tc->num_invocations;
+ gskey.num_outputs = tc->num_outputs;
+ gskey.num_components = tc->num_components;
+ if (testprograms.find(gskey) == testprograms.end()) {
+ char *text;
+
+ fragmentshaderkey fskey;
+ fskey.num_components = tc->num_components;
+ auto fsit = fragmentshaders.find(fskey);
+ if (fsit == fragmentshaders.end()) {
+ if (asprintf(&text, fs_text, tc->num_components) < 0)
+ abort();
+ GLuint fs_shader =
+ piglit_compile_shader_text(GL_FRAGMENT_SHADER,
text);
+ free(text);
+
+ fsit = fragmentshaders.insert(std::make_pair(fskey,
fs_shader)).first;
+ }
+
+ if (asprintf(&text, gs_text, tc->num_invocations,
tc->num_outputs,
+ tc->num_components) < 0)
+ abort();
+ GLuint gs_shader =
+ piglit_compile_shader_text(GL_GEOMETRY_SHADER, text);
+ free(text);
+
+ GLuint prog = glCreateProgram();
+ glAttachShader(prog, vs_shader);
+ glAttachShader(prog, gs_shader);
+ glAttachShader(prog, fsit->second);
+ glLinkProgram(prog);
+ if (!piglit_link_check_status(prog))
+ piglit_report_result(PIGLIT_FAIL);
+
+ glDeleteShader(gs_shader);
+
+ testprograms.insert(std::make_pair(gskey, prog));
+ }
+
+ testcases.push_back(*tc);
+}
+
+static bool
+run_testcase(const struct testcase *tc)
+{
+ print_testcase(tc);
+
+ glClearColor(0, 0, 0, 1);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ geometryshaderkey gskey;
+ gskey.num_invocations = tc->num_invocations;
+ gskey.num_outputs = tc->num_outputs;
+ gskey.num_components = tc->num_components;
+ auto progit = testprograms.find(gskey);
+ assert(progit != testprograms.end());
+
+ glUseProgram(progit->second);
+ glUniform1i(glGetUniformLocation(progit->second,
"u_verts_per_instance"),
+ tc->num_points);
+
+ glDrawArraysInstanced(GL_POINTS, 0, tc->num_points, tc->num_instances);
+
+ float expected[WINDOW_SIZE * WINDOW_SIZE * 4];
+ unsigned num_total =
+ tc->num_instances * tc->num_points * tc->num_invocations *
tc->num_outputs;
+ memset(expected, 0, sizeof(expected));
+
+ for (unsigned i = 0; i < WINDOW_SIZE * WINDOW_SIZE; ++i) {
+ if (i < num_total)
+ expected[4 * i + 1] = 1.0;
+ expected[4 * i + 3] = 1.0;
+ }
+
+ return piglit_probe_image_rgba(0, 0, WINDOW_SIZE, WINDOW_SIZE,
expected);
+}
+
+static void
+generate_testcases_max(const testcase &tc, bool explicit_instances, bool
explicit_points)
+{
+ unsigned amplify = tc.num_invocations * tc.num_outputs;
+ double target_in_points = double(WINDOW_SIZE * WINDOW_SIZE) / amplify;
+
+ if (!explicit_instances) {
+ testcase tc1 = tc;
+ tc1.num_instances = MAX2(1, (unsigned)(target_in_points /
tc1.num_points));
+ add_testcase(&tc1);
+ }
+
+ if (!explicit_points) {
+ testcase tc1 = tc;
+ tc1.num_points = MAX2(1, (unsigned)(target_in_points /
tc1.num_instances));
+ add_testcase(&tc1);
+ }
+
+ if (!explicit_instances && !explicit_points) {
+ testcase tc1 = tc;
+ tc1.num_instances = MAX2(1, (unsigned)sqrt(target_in_points));
+ tc1.num_points = MAX2(1, (unsigned)(target_in_points /
tc1.num_instances));
+ add_testcase(&tc1);
+ }
+
+ if (explicit_instances && explicit_points)
+ add_testcase(&tc);
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ bool explicit_instances = false;
+ bool explicit_points = false;
+ bool explicit_invocations = false;
+ bool explicit_outputs = false;
+ bool explicit_components = false;
+ bool scan_mode = false;
+ unsigned scan_seed = 0;
+ unsigned scan_count = 0;
+ struct testcase explicit_testcase;
+
+ memcpy(&explicit_testcase, &default_testcase,
sizeof(explicit_testcase));
+
+ int i;
+ for (i = 1; i + 1 < argc; ++i) {
+ if (!strcmp(argv[i], "-instances")) {
+ explicit_testcase.num_instances = atoi(argv[i + 1]);
+ explicit_instances = true;
+ i++;
+ } else if (!strcmp(argv[i], "-points")) {
+ explicit_testcase.num_points = atoi(argv[i + 1]);
+ explicit_points = true;
+ i++;
+ } else if (!strcmp(argv[i], "-invocations")) {
+ explicit_testcase.num_invocations = atoi(argv[i + 1]);
+ explicit_invocations = true;
+ i++;
+ } else if (!strcmp(argv[i], "-outputs")) {
+ explicit_testcase.num_outputs = atoi(argv[i + 1]);
+ explicit_outputs = true;
+ i++;
+ } else if (!strcmp(argv[i], "-components")) {
+ explicit_testcase.num_components = atoi(argv[i + 1]);
+ explicit_components = true;
+ i++;
+ } else if (!strcmp(argv[i], "-scan")) {
+ if (i + 2 >= argc) {
+ fprintf(stderr, "-scan: too few arguments\n");
+ exit(1);
+ }
+ scan_seed = atoi(argv[i + 1]);
+ scan_count = atoi(argv[i + 2]);
+ scan_mode = true;
+ i += 2;
+ } else
+ break;
+ }
+ if (i < argc) {
+ fprintf(stderr, "Unknown argument: %s\n", argv[i]);
+ exit(1);
+ }
+
+ vs_shader = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_text);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+
+ /* Various other GL objects needed by the test */
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+
+ glGetIntegerv(GL_MAX_GEOMETRY_OUTPUT_VERTICES,
(GLint*)&max_gs_out_vertices);
+ glGetIntegerv(GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS,
+ (GLint*)&max_gs_total_out_components);
+ glGetIntegerv(GL_MAX_GEOMETRY_OUTPUT_COMPONENTS,
+ (GLint*)&max_gs_out_components);
+ glGetIntegerv(GL_MAX_GEOMETRY_SHADER_INVOCATIONS,
(GLint*)&max_gs_invocations);
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+
+ max_gs_out_vertices_real = MIN2(max_gs_out_vertices,
+ max_gs_total_out_components / 4);
+
+ if (scan_mode) {
+ srand(scan_seed);
+
+ /* First, generate test cases that max out each of the
dimensions */
+ testcase tc0 = explicit_testcase;
+ if (!explicit_invocations)
+ tc0.num_invocations = max_gs_invocations;
+
+ if (!explicit_outputs) {
+ testcase tc1 = tc0;
+
+ if (!explicit_components) {
+ tc1.num_outputs = max_gs_out_vertices_real;
+ tc1.num_components =
MIN2(max_gs_total_out_components / tc1.num_outputs,
+
max_gs_out_components) - 4;
+ } else {
+ tc1.num_outputs =
MIN2(max_gs_total_out_components / (4 + tc1.num_components),
+
max_gs_out_vertices_real);
+ }
+
+ generate_testcases_max(tc1, explicit_instances,
explicit_points);
+ }
+
+ if (!explicit_components) {
+ testcase tc1 = tc0;
+
+ if (!explicit_outputs) {
+ tc1.num_components = max_gs_out_components - 4;
+ tc1.num_outputs =
MIN2(max_gs_total_out_components / (4 + tc1.num_components),
+
max_gs_out_vertices_real);
+ } else {
+ tc1.num_components =
MIN2(max_gs_total_out_components / tc1.num_outputs,
+
max_gs_out_components) - 4;
+ }
+
+ generate_testcases_max(tc1, explicit_instances,
explicit_points);
+ }
+
+ if (explicit_outputs && explicit_components)
+ generate_testcases_max(tc0, explicit_instances,
explicit_points);
+
+ /* Generate additional tests randomly */
+ while (testcases.size() < scan_count) {
+ testcase tc = explicit_testcase;
+
+ if (!explicit_outputs || !explicit_components) {
+ if (explicit_outputs || rand() & 1) {
+ unsigned max_components =
+
MIN2(max_gs_total_out_components / tc.num_outputs,
+ max_gs_out_components) - 4;
+ tc.num_components = rand() %
(max_components + 1);
+
+ if (!explicit_outputs) {
+ unsigned max_outputs =
+
MIN2(max_gs_total_out_components / (4 + tc.num_components),
+
max_gs_out_vertices_real);
+ tc.num_outputs = 1 + rand() %
max_outputs;
+ }
+ } else {
+ unsigned max_outputs =
+
MIN2(max_gs_total_out_components / (4 + tc.num_components),
+ max_gs_out_vertices_real);
+ tc.num_outputs = 1 + rand() %
max_outputs;
+
+ if (!explicit_components) {
+ unsigned max_components =
+
MIN2(max_gs_total_out_components / tc.num_outputs,
+
max_gs_out_components) - 4;
+ tc.num_components = rand() %
(max_components + 1);
+ }
+ }
+ }
+
+ if (!explicit_invocations)
+ tc.num_invocations = 1 + rand() %
max_gs_invocations;
+
+ unsigned amplify = tc.num_invocations * tc.num_outputs;
+ unsigned target_in_points =
+ MAX2(1, (WINDOW_SIZE * WINDOW_SIZE + amplify -
1) / amplify);
+
+ switch (rand() % 4) {
+ case 0:
+ tc.num_points = 1 + rand() % target_in_points;
+ tc.num_instances = 1 + rand() % (1 +
target_in_points / tc.num_points);
+ break;
+ case 1:
+ tc.num_instances = 1 + rand() %
target_in_points;
+ tc.num_points = 1 + rand() % (1 +
target_in_points / tc.num_instances);
+ break;
+ default: {
+ unsigned min = MAX2(1, sqrt(target_in_points) /
2);
+ unsigned max = MIN2(sqrt(target_in_points) * 3
/ 2,
+ target_in_points);
+ tc.num_instances = min + rand() % (max - min +
1);
+ tc.num_points = 1 + rand() % (1 +
target_in_points / tc.num_instances);
+ break;
+ }
+ }
+
+ add_testcase(&tc);
+ }
+ } else {
+ add_testcase(&explicit_testcase);
+ }
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+
+ for (unsigned i = 0; i < testcases.size(); ++i) {
+ if (!run_testcase(&testcases[i]))
+ pass = false;
+ }
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ pass = false;
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
--
2.17.1
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