[Piglit] [PATCH 7/7] khr_texture_compression_astc: Add test case for sliced 3d astc textures
Nanley Chery
nanleychery at gmail.com
Wed Jul 27 23:24:19 UTC 2016
On Fri, Jul 22, 2016 at 02:01:37PM -0700, Anuj Phogat wrote:
> V2: Loosen up the tolerence for sRGB tests. This will allow testing sRGB
> formats which have known precision issues in astcenc in void extent
> blocks. See khronos bug#11294 for details.
> Run each subtest separately in all.py
>
> Cc: Nanley Chery <nanley.g.chery at intel.com>
> Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
> Acked-by: Ben Widawsky <ben at bwidawsk.net>
> ---
> Patch is trimmed to keep the size under limit.
> See full patch at: https://github.com/aphogat/piglit.git, branch: review
>
> tests/all.py | 5 +
> .../khr_texture_compression_astc/CMakeLists.gl.txt | 1 +
> .../CMakeLists.gles3.txt | 1 +
>
> diff --git a/tests/all.py b/tests/all.py
> index e2998d0..063453d 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -4360,6 +4360,11 @@ with profile.group_manager(
> 'miptree-gl {}'.format(subtest))
> g(['khr_compressed_astc-miptree_gles2', '-subtest', subtest],
> 'miptree-gles {}'.format(subtest))
> + for subtest in ('hdr', 'ldr', 'srgb'):
> + g(['khr_compressed_astc-sliced-3d-miptree_gl', '-subtest', subtest],
> + 'sliced-3d-miptree-gl {}'.format(subtest))
> + g(['khr_compressed_astc-sliced-3d-miptree_gles3', '-subtest', subtest],
> + 'sliced-3d-miptree-gles {}'.format(subtest))
>
> with profile.group_manager(
> PiglitGLTest,
> diff --git a/tests/spec/khr_texture_compression_astc/CMakeLists.gl.txt b/tests/spec/khr_texture_compression_astc/CMakeLists.gl.txt
> index a70a3ed..089da84 100644
> --- a/tests/spec/khr_texture_compression_astc/CMakeLists.gl.txt
> +++ b/tests/spec/khr_texture_compression_astc/CMakeLists.gl.txt
> @@ -3,6 +3,7 @@ link_libraries (
> )
>
> piglit_add_executable(khr_compressed_astc-miptree_${piglit_target_api} khr_compressed_astc-miptree.c)
> +piglit_add_executable(khr_compressed_astc-sliced-3d-miptree_${piglit_target_api} khr_compressed_astc-sliced-3d-miptree.c)
> piglit_add_executable(khr_compressed_astc-array_${piglit_target_api} khr_compressed_astc-miptree-array.c)
> piglit_add_executable(khr_compressed_astc-basic_${piglit_target_api} khr_compressed_astc-basic.c)
>
> diff --git a/tests/spec/khr_texture_compression_astc/CMakeLists.gles3.txt b/tests/spec/khr_texture_compression_astc/CMakeLists.gles3.txt
> index 60147b2..dfc34e5 100644
> --- a/tests/spec/khr_texture_compression_astc/CMakeLists.gles3.txt
> +++ b/tests/spec/khr_texture_compression_astc/CMakeLists.gles3.txt
> @@ -1,4 +1,5 @@
> link_libraries(piglitutil_${piglit_target_api})
> piglit_add_executable(khr_compressed_astc-array_${piglit_target_api} khr_compressed_astc-miptree-array.c)
> +piglit_add_executable(khr_compressed_astc-sliced-3d-miptree_${piglit_target_api} khr_compressed_astc-sliced-3d-miptree.c)
>
> diff --git a/tests/spec/khr_texture_compression_astc/khr_compressed_astc-sliced-3d-miptree.c b/tests/spec/khr_texture_compression_astc/khr_compressed_astc-sliced-3d-miptree.c
> new file mode 100644
> index 0000000..53f0529
> --- /dev/null
> +++ b/tests/spec/khr_texture_compression_astc/khr_compressed_astc-sliced-3d-miptree.c
> @@ -0,0 +1,409 @@
> +/*
> + * Copyright 2016 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
> + * \brief Test texturing from an ASTC miptree of a real image.
> + *
> + * The files under compressed/SLICED3D/{hdr, ldrl, ldrs} contain full miptrees,
> + * in the GL_*_ASTC_* formats, of a sliced 3D texture of waffles and fruit [1].
> + * The base level size was shrunken to 160x106 pixels. The files under the
> + * decompressed/SLICED3D/{hdr, ldrl, ldrs} directory contain the same miptree in
> + * GL_RGBA format. Each miplevel was obtained by decompressing the corresponding
> + * ASTC texture with astcenc [2].
> + *
I think this description should mention the depth of the 3D textures.
> + * This test draws miplevels of the compressed textures in a space-efficient
> + * manner. It does the same when drawing the decompressed texture on the right.
> + * Each miplevel of both images are compared for equality after being drawn.
> + *
> + * [1] The reference image is located at:
> + * http://people.freedesktop.org/~chadversary/permalink/2012-07-09/1574cff2-d091-4421-a3cf-b56c7943d060.jpg.
> + * [2] astcenc is the reference ASTC compression tool, available at:
> + * http://malideveloper.arm.com/develop-for-mali/tools/software-tools/astc-evaluation-codec/.
> + */
> +
> +#include "piglit-util-gl.h"
> +#include "piglit_ktx.h"
> +
> +#define NUM_LEVELS 3
> +#define LEVEL0_WIDTH 160
> +#define LEVEL0_HEIGHT 106
> +#define LEVEL0_DEPTH 8
> +
> +#define NUM_VERTICES 4
> +
> +static GLuint prog;
> +
> +static struct piglit_gl_test_config *piglit_config;
> +
> +enum test_type
> +{
> + TEST_TYPE_HDR,
> + TEST_TYPE_LDR,
> + TEST_TYPE_SRGB,
> + TEST_TYPE_SRGB_FP,
> +};
Since the srgb-fp test won't be executed, I think we should remove the
enum and related references.
> +
> +enum piglit_result
> +test_miptrees(void* input_type);
> +
> +static enum test_type ldr_test = TEST_TYPE_LDR;
> +static enum test_type hdr_test = TEST_TYPE_HDR;
> +static enum test_type srgb_test = TEST_TYPE_SRGB;
> +static enum test_type srgb_fp_test = TEST_TYPE_SRGB_FP;
> +static const struct piglit_subtest subtests[] = {
> + {
> + "LDR Profile",
> + "ldr",
> + test_miptrees,
> + &ldr_test,
> + },
> + {
> + "HDR Profile",
> + "hdr",
> + test_miptrees,
> + &hdr_test,
> + },
> + {
> + "sRGB decode",
> + "srgb",
> + test_miptrees,
> + &srgb_test,
> + },
> + {
> + "sRGB decode full precision",
> + "srgb-fp",
> + test_miptrees,
> + &srgb_fp_test,
> + },
> + {NULL},
> +};
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + piglit_config = &config;
> + config.supports_gl_compat_version = 11;
> + config.supports_gl_es_version = 30;
> +
> + config.window_width = 2 * LEVEL0_WIDTH;
> + config.window_height = LEVEL0_HEIGHT + (LEVEL0_HEIGHT >> 1);
> + config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
> +
> + config.subtests = subtests;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +/**
> + * The \a filename is relative to the current test's source directory.
> + *
> + * A new texture is created and returned in \a tex_name.
> + */
> +static void
> +load_texture(const char *dir1, const char *dir2,
> + const char *block_dim_str, GLuint *tex_name)
> +{
> + struct piglit_ktx *ktx;
> + const struct piglit_ktx_info *info;
> + char filepath[4096];
> + char cur_file[20];
> + bool ok = true;
> +
> + /* Generate filename for compressed texture */
> + snprintf(cur_file, sizeof(cur_file), "waffles-%s.ktx",
> + block_dim_str);
> +
> + piglit_join_paths(filepath, sizeof(filepath), 7,
> + piglit_source_dir(),
> + "tests",
> + "spec",
> + "khr_texture_compression_astc",
> + dir1,
> + dir2,
> + cur_file);
> +
> + ktx = piglit_ktx_read_file(filepath);
> + if (ktx == NULL)
> + piglit_report_result(PIGLIT_FAIL);
> +
> + info = piglit_ktx_get_info(ktx);
> + assert(info->num_miplevels == NUM_LEVELS);
> + assert(info->target == GL_TEXTURE_3D);
> + assert(info->pixel_width == LEVEL0_WIDTH);
> + assert(info->pixel_height == LEVEL0_HEIGHT);
> +
I think we might as well assert the pixel depth here.
> + *tex_name = 0;
> + ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
> + if (!ok)
> + piglit_report_result(PIGLIT_FAIL);
> +
> + piglit_ktx_destroy(ktx);
> +}
> +
> +/** Compares the compressed texture against the decompressed texture */
> +bool draw_compare_levels(bool check_error,
> + GLint level_pixel_size_loc, GLint pixel_offset_loc,
> + GLint slice_loc, GLint depth_loc, GLint slice,
> + GLuint compressed_tex, GLuint decompressed_tex)
> +{
> + /* Fully-saturated magenta */
> + static const float error_color[4] = {1.0, 0.0, 1.0, 1.0};
> +
> + unsigned y = 0;
> + unsigned x = 0;
> + bool pass = true;
> + int level = 0;
> +
> + for (; level < NUM_LEVELS; ++level) {
> + int w = LEVEL0_WIDTH >> level;
> + int h = LEVEL0_HEIGHT >> level;
> + int d = LEVEL0_DEPTH >> level;
> + pass = true;
Setting pass to true here seems dangerous. I can imagine a case in which
level 1 comparison fails, but level 2 passes. An error would be printed,
but the test wouldn't fail.
> + glUniform2f(level_pixel_size_loc, (float) w, (float) h);
> + glUniform1f(slice_loc, slice);
> + glUniform1f(depth_loc, d);
> +
> + /* Draw miplevel of compressed texture. */
> + glBindTexture(GL_TEXTURE_3D, compressed_tex);
> + glUniform2f(pixel_offset_loc, x, y);
> + glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
> +
> + /* Draw miplevel of decompressed texture. */
> + if (!check_error) {
> + glBindTexture(GL_TEXTURE_3D, decompressed_tex);
> + glUniform2f(pixel_offset_loc, LEVEL0_WIDTH + x, y);
> + glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
> + }
> +
> + /* Check the textures (or error-colors) for equivalence. */
> + if (pass) {
> + if (check_error) {
> + pass = piglit_probe_rect_rgba(x, y, w, h,
> + error_color);
> + } else {
> + pass = piglit_probe_rects_equal(x, y,
> + LEVEL0_WIDTH + x, y,
> + w, h, GL_RGBA);
> + }
> +
> + if (!pass)
> + piglit_loge("Slice: %d, Miplevel: %d",
> + slice, level);
> + }
> +
> + /* Update the next miplevel arrangement */
> + if (level == 1)
> + x += w;
> + else
> + y += h;
> + }
> +
> + /* Delete bound textures */
> + glDeleteTextures(1, &compressed_tex);
> + glDeleteTextures(1, &decompressed_tex);
> +
> + piglit_present_results();
> + return pass;
> +}
> +
> +enum piglit_result
> +test_miptrees(void* input_type)
> +{
> + GLint slice_loc, depth_loc, pixel_offset_loc, level_pixel_size_loc;
> + const enum test_type subtest = *(enum test_type*) input_type;
> + const bool is_srgb_test = subtest == TEST_TYPE_SRGB;
> + const bool is_hdr_test = subtest == TEST_TYPE_HDR;
> +
> + static const char * tests[4] = {"hdr", "ldrl", "ldrs", "ldrs"};
> + static const char * block_dim_str[14] = {
> + "4x4",
> + "5x4",
> + "5x5",
> + "6x5",
> + "6x6",
> + "8x5",
> + "8x6",
> + "8x8",
> + "10x5",
> + "10x6",
> + "10x8",
> + "10x10",
> + "12x10",
> + "12x12"
> + };
> +
> + piglit_require_extension("GL_KHR_texture_compression_astc_ldr");
> +
> + pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
> + level_pixel_size_loc = glGetUniformLocation(prog, "level_pixel_size");
> + slice_loc = glGetUniformLocation(prog, "slice");
> + depth_loc = glGetUniformLocation(prog, "depth");
> +
> + /* Check for error color if an LDR-only sys reading an HDR
> + * texture. No need to draw a reference mipmap in this case.
> + */
> + const bool has_hdr = piglit_is_extension_supported(
> + "GL_KHR_texture_compression_astc_hdr");
> + const bool check_error = is_hdr_test && !has_hdr;
> + int slice, block_dims = 0;
> +
> + if (!has_hdr)
> + piglit_require_extension(
> + "GL_KHR_texture_compression_astc_sliced_3d");
> +
> + if (is_srgb_test)
> + /* Loosen up the tolerence for sRGB tests. This will allow testing
> + * sRGB formats which have known precision issues in void extent
> + * blocks. See khronos bug#11294 for details.
> + */
> + piglit_set_tolerance_for_bits(7, 7, 7, 7);
> + else
> + piglit_set_tolerance_for_bits(8, 8, 8, 8);
> +
> + for ( ; block_dims < ARRAY_SIZE(block_dim_str); block_dims++) {
> + for (slice = 0 ; slice < LEVEL0_DEPTH; slice++) {
I think the slice for loop should be moved further down so that we don't
reload the same textures unnecessarily.
- Nanley
> +
> + /* Texture objects. */
> + GLuint tex_compressed = 0;
> + GLuint tex_decompressed = 0;
> +
> + /* Load texture for current submode and block size */
> + load_texture("compressed/SLICED3D", tests[subtest],
> + block_dim_str[block_dims],
> + &tex_compressed);
> + if (!check_error) {
> + load_texture("decompressed/SLICED3D",
> + tests[subtest],
> + block_dim_str[block_dims],
> + &tex_decompressed);
> + }
> +
> + /* Draw and compare each level of the two textures */
> + glClear(GL_COLOR_BUFFER_BIT);
> + if (!draw_compare_levels(check_error,
> + level_pixel_size_loc,
> + pixel_offset_loc,
> + slice_loc, depth_loc,
> + slice,
> + tex_compressed,
> + tex_decompressed)) {
> + piglit_loge("Mode: %s Block: %s.",
> + tests[subtest],
> + block_dim_str[block_dims]);
> + return PIGLIT_FAIL;
> + }
> + }
> + block_dims++;
> + }
> + return PIGLIT_PASS;
> +}
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + static const char vs_source[] =
> + "#version 300 es\n"
> + "\n"
> + "uniform vec2 window_pixel_size;\n"
> + "uniform vec2 level_pixel_size;\n"
> + "uniform vec2 pixel_offset;\n"
> + "\n"
> + "// vertex is some corner of the unit square [0,1]^2 \n"
> + "in vec2 vertex;\n"
> + "out vec2 tex_coord;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " vec2 pos = vertex;\n"
> + " pos *= level_pixel_size;\n"
> + " pos += pixel_offset;\n"
> + " pos /= 0.5 * window_pixel_size;\n"
> + " pos -= vec2(1, 1);\n"
> + " gl_Position = vec4(pos.xy, 0.0, 1.0);\n"
> + "\n"
> + " tex_coord = vertex;\n"
> + "}\n";
> +
> + static const char fs_source[] =
> + "#version 300 es\n"
> + "precision highp float;\n"
> + "\n"
> + "uniform highp sampler3D tex;\n"
> + "uniform float slice;\n"
> + "uniform float depth;\n"
> + "in vec2 tex_coord;\n"
> + "out vec4 fragment_color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " vec4 t = texture(tex, vec3(tex_coord.x, tex_coord.y,\n"
> + " slice / (depth - 1.0)));\n"
> + " fragment_color = vec4(t.rgb, 1.0);\n"
> + "}\n";
> +
> + /* Vertices to draw a square triangle strip. */
> + static const GLfloat vertices[2 * NUM_VERTICES] = {
> + 0, 0,
> + 1, 0,
> + 1, 1,
> + 0, 1,
> + };
> +
> + GLint vertex_loc;
> + GLuint vertex_buf;
> + GLuint vao;
> +
> + if (!piglit_is_gles())
> + piglit_require_extension("GL_ARB_ES3_compatibility");
> +
> + glClearColor(0.9098, 0.8314, 0.7843, 1.0);
> + glViewport(0, 0, piglit_width, piglit_height);
> +
> + glGenBuffers(1, &vertex_buf);
> + glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
> +
> + glGenVertexArrays(1, &vao);
> + glBindVertexArray(vao);
> +
> + prog = piglit_build_simple_program(vs_source, fs_source);
> + glReleaseShaderCompiler();
> + glUseProgram(prog);
> +
> + vertex_loc = glGetAttribLocation(prog, "vertex");
> + glEnableVertexAttribArray(vertex_loc);
> + glVertexAttribPointer(vertex_loc, 2, GL_FLOAT, GL_FALSE, 0, NULL);
> + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
> + GL_STATIC_DRAW);
> +
> + glUniform1i(glGetUniformLocation(prog, "tex"), 0);
> + glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
> + piglit_width, piglit_height);
> +}
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> + return piglit_run_selected_subtests(piglit_config->subtests,
> + piglit_config->selected_subtests,
> + piglit_config->num_selected_subtests,
> + PIGLIT_SKIP);
> +}
> --
> 2.5.5
>
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