[Piglit] [PATCH 16/25] arb_shader_image_load_store: Import test for mipmap level binding.
Francisco Jerez
currojerez at riseup.net
Sun Oct 5 14:00:46 PDT 2014
Test that image loads and stores land in the correct mipmap level of
the texture when a level other than the first is bound to an image
unit.
---
tests/all.py | 1 +
.../arb_shader_image_load_store/CMakeLists.gl.txt | 1 +
tests/spec/arb_shader_image_load_store/level.c | 195 +++++++++++++++++++++
3 files changed, 197 insertions(+)
create mode 100644 tests/spec/arb_shader_image_load_store/level.c
diff --git a/tests/all.py b/tests/all.py
index 4f321e9..1503a4c 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -4255,6 +4255,7 @@ arb_shader_image_load_store['host-mem-barrier'] = concurrent_test('arb_shader_im
arb_shader_image_load_store['indexing'] = concurrent_test('arb_shader_image_load_store-indexing')
arb_shader_image_load_store['invalid'] = concurrent_test('arb_shader_image_load_store-invalid')
arb_shader_image_load_store['layer'] = concurrent_test('arb_shader_image_load_store-layer')
+arb_shader_image_load_store['level'] = concurrent_test('arb_shader_image_load_store-level')
profile.tests['hiz'] = hiz
profile.tests['fast_color_clear'] = fast_color_clear
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 2dfdccf..990c3e0 100644
--- a/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_image_load_store/CMakeLists.gl.txt
@@ -21,5 +21,6 @@ piglit_add_executable(arb_shader_image_load_store-host-mem-barrier host-mem-barr
piglit_add_executable(arb_shader_image_load_store-indexing indexing.c ${depends})
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})
# vim: ft=cmake:
diff --git a/tests/spec/arb_shader_image_load_store/level.c b/tests/spec/arb_shader_image_load_store/level.c
new file mode 100644
index 0000000..5fbdbaf
--- /dev/null
+++ b/tests/spec/arb_shader_image_load_store/level.c
@@ -0,0 +1,195 @@
+/*
+ * 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 level.c
+ *
+ * Test the binding of individual mipmap levels to an image unit by
+ * dumping the whole accessible contents of an image to the
+ * framebuffer and then checking that the observed values match the
+ * bound mipmap level. The same mipmap level is then overwritten by
+ * the shader program after its contents have been read.
+ */
+
+#include "common.h"
+
+/** Window width. */
+#define W 16
+
+/** Window height. */
+#define H 96
+
+/** Total number of pixels in the window and image. */
+#define N (W * H)
+
+/** Maximum number of mipmap levels. */
+#define M 11
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+config.supports_gl_core_version = 32;
+
+config.window_width = W;
+config.window_height = H;
+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 l)
+{
+ const unsigned num_levels = image_num_levels(img);
+ uint32_t pixels[4 * N * M];
+ unsigned i;
+
+ for (i = 0; i < 4 * N * num_levels; ++i)
+ pixels[i] = encode(img.format, i);
+
+ return upload_image_levels(img, num_levels, l, 0, pixels);
+}
+
+static bool
+check_fb(const struct grid_info grid, const struct image_info img, unsigned l)
+{
+ const unsigned offset = 4 * image_level_offset(img, l);
+ const unsigned n = 4 * product(grid.size);
+ uint32_t pixels_fb[4 * N], expect_fb[4 * N];
+ unsigned i;
+
+ if (!download_result(grid, pixels_fb))
+ return false;
+
+ for (i = 0; i < n; ++i) {
+ /*
+ * The framebuffer contents should reflect level l of
+ * the image which is read by the shader program.
+ */
+ expect_fb[i] = encode(grid.format, offset + i);
+ }
+
+ if (!check_pixels_v(image_info_for_grid(grid), pixels_fb, expect_fb)) {
+ printf(" Source: framebuffer\n");
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+check_img(const struct image_info img, unsigned l)
+{
+ const unsigned num_levels = image_num_levels(img);
+ uint32_t pixels_img[4 * N * M], expect_img[4 * N];
+ unsigned i, j;
+
+ if (!download_image_levels(img, num_levels, 0, pixels_img))
+ return false;
+
+ for (j = 0; j < num_levels; ++j) {
+ const struct image_info level_img = image_info_for_level(img, j);
+ const unsigned offset = 4 * image_level_offset(img, j);
+ const unsigned n = 4 * product(level_img.size);
+
+ for (i = 0; i < n; ++i) {
+ if (j == l) {
+ /*
+ * Level l should have been modified
+ * by the shader.
+ */
+ expect_img[i] = encode(img.format, 33);
+ } else {
+ /*
+ * Other levels should have remained
+ * unchanged.
+ */
+ expect_img[i] = encode(img.format, offset + i);
+ }
+ }
+
+ if (!check_pixels_v(level_img, &pixels_img[offset],
+ expect_img)) {
+ printf(" Source: image level %d\n", j);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/**
+ * Bind an individual level of a texture mipmap to an image unit, read
+ * its contents and write back a different value to the same location.
+ */
+static bool
+run_test(const struct image_target_info *target)
+{
+ const unsigned level = 3;
+ const struct image_info img = image_info(
+ target->target, GL_RGBA32F, W, H);
+ const struct image_info level_img = image_info_for_level(img, level);
+ const struct grid_info grid = {
+ GL_FRAGMENT_SHADER_BIT, img.format,
+ image_optimal_extent(level_img.size)
+ };
+ GLuint prog = generate_program(
+ grid, GL_FRAGMENT_SHADER,
+ concat(image_hunk(level_img, ""),
+ hunk("uniform IMAGE_T img;\n"
+ "\n"
+ "GRID_T op(ivec2 idx, GRID_T x) {\n"
+ " GRID_T v = imageLoad(img, IMAGE_ADDR(idx));\n"
+ " imageStore(img, IMAGE_ADDR(idx), DATA_T(33));\n"
+ " return v;\n"
+ "}\n"), NULL));
+ bool ret = prog && init_fb(grid) &&
+ init_image(img, level) &&
+ set_uniform_int(prog, "img", 0) &&
+ draw_grid(grid, prog) &&
+ check_fb(grid, img, level) &&
+ check_img(img, level);
+
+ glDeleteProgram(prog);
+ return ret;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ enum piglit_result status = PIGLIT_PASS;
+ const struct image_target_info *target;
+
+ piglit_require_extension("GL_ARB_shader_image_load_store");
+
+ for (target = image_targets(); target->name; ++target) {
+ if (image_target_mipmapping_dimensions(target))
+ subtest(&status, true, run_test(target),
+ "%s level binding test", target->name);
+ }
+
+ piglit_report_result(status);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ return PIGLIT_FAIL;
+}
--
2.1.1
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