[Piglit] [PATCH 16/23] arb_shader_image_load_store: Import test for the maximum texture size.

Francisco Jerez currojerez at riseup.net
Sat Jan 31 07:41:38 PST 2015


Test that images work as expected up to the maximum texture dimensions
reported by the implementation for each target.  The test is carried
out one dimension at a time to avoid creating huge textures (a 16Kx16K
RGBA32F texture is already 4GB), but this is not always possible
because e.g. both dimensions of a cubemap necessarily have to be
equal.  There is a hard-coded limit for the total texture size (which
is especially stringent in quick mode) to make sure that the
implementation doesn't make us do anything stupid like creating a 32 GB
cubemap array texture.
---
 tests/all.py                                       |   1 +
 tests/quick.py                                     |   1 +
 .../arb_shader_image_load_store/CMakeLists.gl.txt  |   1 +
 tests/spec/arb_shader_image_load_store/max-size.c  | 197 +++++++++++++++++++++
 4 files changed, 200 insertions(+)
 create mode 100644 tests/spec/arb_shader_image_load_store/max-size.c

diff --git a/tests/all.py b/tests/all.py
index 0a36a93..32637be 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -4437,6 +4437,7 @@ arb_shader_image_load_store['invalid'] = PiglitGLTest('arb_shader_image_load_sto
 arb_shader_image_load_store['layer'] = PiglitGLTest('arb_shader_image_load_store-layer', run_concurrent=True)
 arb_shader_image_load_store['level'] = PiglitGLTest('arb_shader_image_load_store-level', run_concurrent=True)
 arb_shader_image_load_store['max-images'] = PiglitGLTest('arb_shader_image_load_store-max-images', run_concurrent=True)
+arb_shader_image_load_store['max-size'] = PiglitGLTest('arb_shader_image_load_store-max-size', run_concurrent=True)
 
 profile.tests['hiz'] = hiz
 profile.tests['fast_color_clear'] = fast_color_clear
diff --git a/tests/quick.py b/tests/quick.py
index 72b3b19..77cbefb 100644
--- a/tests/quick.py
+++ b/tests/quick.py
@@ -15,3 +15,4 @@ del profile.tests['shaders']['glsl-vs-unroll-explosion']
 
 profile.tests['spec']['ARB_shader_image_load_store']['coherency'].command += ["--quick"]
 profile.tests['spec']['ARB_shader_image_load_store']['host-mem-barrier'].command += ["--quick"]
+profile.tests['spec']['ARB_shader_image_load_store']['max-size'].command += ["--quick"]
diff --git a/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt b/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt
index 2871b48..461628c 100644
--- a/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt
@@ -23,5 +23,6 @@ piglit_add_executable(arb_shader_image_load_store-invalid invalid.c ${depends})
 piglit_add_executable(arb_shader_image_load_store-layer layer.c ${depends})
 piglit_add_executable(arb_shader_image_load_store-level level.c ${depends})
 piglit_add_executable(arb_shader_image_load_store-max-images max-images.c ${depends})
+piglit_add_executable(arb_shader_image_load_store-max-size max-size.c ${depends})
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_shader_image_load_store/max-size.c b/tests/spec/arb_shader_image_load_store/max-size.c
new file mode 100644
index 0000000..bd08091
--- /dev/null
+++ b/tests/spec/arb_shader_image_load_store/max-size.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 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 max-size.c
+ *
+ * Check that images work as expected up to the maximum texture size
+ * reported for each target.
+ */
+
+#include "common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+config.supports_gl_core_version = 32;
+
+config.window_width = 1;
+config.window_height = 1;
+config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static bool
+init_image(const struct image_info img, unsigned unit)
+{
+        const unsigned n = image_num_components(img.format) * product(img.size);
+        uint32_t *pixels = malloc(sizeof(uint32_t) * n);
+        bool ret;
+        int i;
+
+        for (i = 0; i < n; ++i)
+                pixels[i] = (unit == 0 ? encode(img.format, i) : 0);
+
+        ret = upload_image(img, unit, pixels);
+
+        free(pixels);
+        return ret;
+}
+
+static bool
+check(const struct image_info img)
+{
+        const unsigned n = image_num_components(img.format) * product(img.size);
+        uint32_t *pixels = malloc(sizeof(uint32_t) * n);
+        uint32_t *expect = malloc(sizeof(uint32_t) * n);
+        bool ret;
+        int i;
+
+        for (i = 0; i < n; ++i)
+                expect[i] = encode(img.format, i);
+
+        ret = download_image(img, 1, pixels) &&
+                check_pixels_v(img, pixels, expect);
+
+        free(expect);
+        free(pixels);
+        return ret;
+}
+
+static bool
+run_test(const struct image_target_info *target,
+         const struct image_extent size)
+{
+        const struct grid_info grid = {
+                GL_FRAGMENT_SHADER_BIT,
+                get_image_format(GL_RGBA32F),
+                image_optimal_extent(size)
+        };
+        const struct image_info img = {
+                target, grid.format, size,
+                image_format_epsilon(grid.format)
+        };
+        GLuint prog = generate_program(
+                grid, GL_FRAGMENT_SHADER,
+                concat(image_hunk(img, ""),
+                       hunk("readonly uniform IMAGE_T src_img;\n"
+                            "writeonly uniform IMAGE_T dst_img;\n"
+                            "\n"
+                            "GRID_T op(ivec2 idx, GRID_T x) {\n"
+                            "        imageStore(dst_img, IMAGE_ADDR(idx),"
+                            "                imageLoad(src_img, IMAGE_ADDR(idx)));\n"
+                            "        return x;\n"
+                            "}\n"), NULL));
+        bool ret = prog && init_fb(grid) &&
+                init_image(img, 0) &&
+                init_image(img, 1) &&
+                set_uniform_int(prog, "src_img", 0) &&
+                set_uniform_int(prog, "dst_img", 1)  &&
+                draw_grid(grid, prog) &&
+                check(img);
+
+        glDeleteProgram(prog);
+        return ret;
+}
+
+static struct image_extent
+get_test_extent(const struct image_target_info *target, unsigned d)
+{
+        const struct image_extent ls = image_target_limits(target);
+        const unsigned high = ~0, low = 8;
+        struct image_extent ext;
+        int i;
+
+        for (i = 0; i < 4; ++i)
+                set_idx(ext, i, MIN2(get_idx(ls, i), (i == d ? high : low)));
+
+        if (target->target == GL_TEXTURE_CUBE_MAP ||
+            target->target == GL_TEXTURE_CUBE_MAP_ARRAY) {
+                /* Cube maps have to be square and the number of faces
+                 * should be a multiple of six. */
+                ext.y = ext.x;
+                ext.z = 6 * MAX2(ext.z / 6, 1);
+
+        } else if (image_target_samples(target) > 1) {
+                /* Use the maximum number of samples to keep things
+                 * interesting. */
+                ext.x = image_target_samples(target);
+        }
+
+        return ext;
+}
+
+static bool
+should_test_dimension(const struct image_target_info *target, int d)
+{
+        const struct image_extent ls = image_target_limits(target);
+
+        return get_idx(ls, d) > 1 &&
+                /* Skip second cube map dimension as faces have to be
+                 * square. */
+                !(target->target == GL_TEXTURE_CUBE_MAP && d >= 1) &&
+                !(target->target == GL_TEXTURE_CUBE_MAP_ARRAY && d == 1) &&
+                /* Skip sample dimension. */
+                !(image_target_samples(target) > 1 && d == 0);
+}
+
+static bool
+is_test_reasonable(bool quick, const struct image_extent size)
+{
+        /* Set an arbitrary limit on the number of texels so the test
+         * doesn't take forever. */
+        return product(size) < (quick ? 4 : 64) * 1024 * 1024;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+        const bool quick = (argc >= 2 && !strcmp(argv[1], "--quick"));
+        enum piglit_result status = PIGLIT_PASS;
+        const struct image_target_info *target;
+        int d;
+
+        piglit_require_extension("GL_ARB_shader_image_load_store");
+
+        for (target = image_targets(); target->name; ++target) {
+                for (d = 0; d < 4; ++d) {
+                        if (should_test_dimension(target, d)) {
+                                const struct image_extent size =
+                                        get_test_extent(target, d);
+
+                                subtest(&status,
+                                        is_test_reasonable(quick, size),
+                                        run_test(target, size),
+                                        "image%s max size test/%dx%dx%dx%d",
+                                        target->name,
+                                        size.x, size.y, size.z, size.w);
+                        }
+                }
+        }
+
+        piglit_report_result(status);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+        return PIGLIT_FAIL;
+}
-- 
2.1.3



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