ext_gpu_shader4: add compiler tests for everything

[piglit.git] / tests / spec / khr_texture_compression_astc / khr_compressed_astc-sliced-3d-miptree.c

/*
 * 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 and used to create a sliced
 * 3D texture with depth=8.
 * 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].
 *
 * 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,
};

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);
        assert(info->pixel_depth == LEVEL0_DEPTH);

        *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 result = true;
        int level = 0;

        for (; level < NUM_LEVELS; ++level) {
                int w = LEVEL0_WIDTH >> level;
                int h = LEVEL0_HEIGHT >> level;
                int d = LEVEL0_DEPTH >> level;
                bool pass = true;
                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);

                /* Check the textures (or error-colors) for equivalence. */
                if (check_error) {
                        pass = piglit_probe_rect_rgba(x, y, w, h,
                                                      error_color);
                } else {
                        /* Draw miplevel of decompressed texture. */
                        glBindTexture(GL_TEXTURE_3D, decompressed_tex);
                        glUniform2f(pixel_offset_loc, LEVEL0_WIDTH + x, y);
                        glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);

                        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);
                        result = false;
                }

                /* Update the next miplevel arrangement */
                if (level == 1)
                        x += w;
                else
                        y += h;
        }

        piglit_present_results();
        return result;
}

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++) {
                /* 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);
                }
                for (slice = 0 ; slice < LEVEL0_DEPTH; slice++) {
                        /* 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;
                        }
                }
                /* Delete bound textures */
                glDeleteTextures(1, &tex_compressed);
                if (!check_error)
                        glDeleteTextures(1, &tex_decompressed);

        }
        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);
}