[Piglit] [PATCH v2] amd_compressed_atc_texture: add miptree test

Jonathan Marek jonathan at marek.ca
Tue Apr 9 20:20:30 UTC 2019


This echoes the ETC1 miptree test, and even uses the same image.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Signed-off-by: Jonathan Marek <jonathan at marek.ca>
---
 tests/spec/CMakeLists.txt                     |   1 +
 .../CMakeLists.gles2.txt                      |   6 +
 .../amd_compressed_atc_texture/CMakeLists.txt |   1 +
 .../spec/amd_compressed_atc_texture/miptree.c | 247 ++++++++++++++++++
 .../waffles-compressed-atc-64x32.ktx          | Bin 0 -> 1464 bytes
 .../waffles-decompressed-rgba-64x32.ktx       | Bin 0 -> 11008 bytes
 6 files changed, 255 insertions(+)
 create mode 100644 tests/spec/amd_compressed_atc_texture/CMakeLists.gles2.txt
 create mode 100644 tests/spec/amd_compressed_atc_texture/CMakeLists.txt
 create mode 100644 tests/spec/amd_compressed_atc_texture/miptree.c
 create mode 100644 tests/spec/amd_compressed_atc_texture/waffles-compressed-atc-64x32.ktx
 create mode 100644 tests/spec/amd_compressed_atc_texture/waffles-decompressed-rgba-64x32.ktx

diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
index 7f0d3a44e..6169041ff 100644
--- a/tests/spec/CMakeLists.txt
+++ b/tests/spec/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_subdirectory (amd_framebuffer_multisample_advanced)
 add_subdirectory (amd_depth_clamp_separate)
+add_subdirectory (amd_compressed_atc_texture)
 add_subdirectory (amd_performance_monitor)
 add_subdirectory (amd_pinned_memory)
 add_subdirectory (arb_arrays_of_arrays)
diff --git a/tests/spec/amd_compressed_atc_texture/CMakeLists.gles2.txt b/tests/spec/amd_compressed_atc_texture/CMakeLists.gles2.txt
new file mode 100644
index 000000000..0509e44ae
--- /dev/null
+++ b/tests/spec/amd_compressed_atc_texture/CMakeLists.gles2.txt
@@ -0,0 +1,6 @@
+include_directories(
+	${GLEXT_INCLUDE_DIR}
+	${OPENGL_INCLUDE_PATH}
+)
+link_libraries(piglitutil_${piglit_target_api})
+piglit_add_executable(amd_compressed_atc_texture-miptree miptree.c)
diff --git a/tests/spec/amd_compressed_atc_texture/CMakeLists.txt b/tests/spec/amd_compressed_atc_texture/CMakeLists.txt
new file mode 100644
index 000000000..144a306f4
--- /dev/null
+++ b/tests/spec/amd_compressed_atc_texture/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/spec/amd_compressed_atc_texture/miptree.c b/tests/spec/amd_compressed_atc_texture/miptree.c
new file mode 100644
index 000000000..386ca9811
--- /dev/null
+++ b/tests/spec/amd_compressed_atc_texture/miptree.c
@@ -0,0 +1,247 @@
+/*
+ * Copyright 2012 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 ATC miptree of a real image.
+ *
+ * Copied from identical ETC1 test.
+ *
+ * This test uses two data files. The file waffles-compressed-atc-64x32.ktx
+ * contains a full miptree in GL_ATC_RGB_AMD format of a 2D texture of
+ * waffles and fruit [1].  The base level size is 64x32 pixels. The file
+ * waffles-decompressed-rgba-64x32.ktx contains a parallel miptree in GL_RGBA
+ * format. Each of its RGBA images was obtained by decompressing the corresponding
+ * ATC image with AMD's Compressonator tool [2].
+ *
+ * This test draws each miplevel i of the ATC texture such that the image's
+ * lower left corner is at (x=0, y=sum(height of miplevel j for j=0 to i-1)),
+ * and it draws each miplevel of the RGB texture to the right of its
+ * corresponding ATC image. Then it compares that the images are identical.
+ *
+ * [1] The reference image is located at http://people.freedesktop.org/~chadversary/permalink/2012-07-09/1574cff2-d091-4421-a3cf-b56c7943d060.jpg.
+ * [2] https://github.com/GPUOpen-Tools/Compressonator
+ *
+ * Compressonator tool is not perfect:
+ * -RGBA is used for the decompressed image because the tool is buggy with RGB.
+ * -red/blue swapped when decompressing ATC (used script to swap red/blue back for test image)
+ * -7th 1x1 mipmap isn't generated (num_levels 6 instead of 7)
+ */
+
+#include "piglit-util-gl.h"
+#include "piglit_ktx.h"
+
+#define num_levels 6
+#define level0_width 64
+#define level0_height 32
+
+#define num_vertices 4
+
+static const int window_width = 2 * level0_width;
+static const int window_height = 2 * level0_height;
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_es_version = 20;
+
+	config.window_width = window_width;
+	config.window_height = window_height;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+
+static GLuint prog;
+
+/* Texture objects. */
+static GLuint compressed_tex;
+static GLuint decompressed_tex;
+
+/**
+ * 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 *filename, GLuint *tex_name)
+{
+	struct piglit_ktx *ktx;
+	const struct piglit_ktx_info *info;
+	char filepath[4096];
+	bool ok = true;
+
+	piglit_join_paths(filepath, sizeof(filepath), 5,
+	                  piglit_source_dir(),
+	                  "tests",
+	                  "spec",
+	                  "amd_compressed_atc_texture",
+	                  filename);
+
+	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_2D);
+	assert(info->pixel_width == level0_width);
+	assert(info->pixel_height== level0_height);
+
+	*tex_name = 0;
+	ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
+	if (!ok)
+		piglit_report_result(PIGLIT_FAIL);
+
+	piglit_ktx_destroy(ktx);
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	static const char compressed_filename[] = "waffles-compressed-atc-64x32.ktx";
+	static const char decompressed_filename[] = "waffles-decompressed-rgba-64x32.ktx";
+
+	const char vs_source[] =
+		"#version 100\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"
+		"attribute vec2 vertex;\n"
+		"varying 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";
+
+	const char fs_source[] =
+		"#version 100\n"
+		"precision highp float;\n"
+		"\n"
+		"uniform sampler2D tex;\n"
+		"varying vec2 tex_coord;\n"
+		"\n"
+		"void main()\n"
+		"{\n"
+		"    vec4 t = texture2D(tex, tex_coord);\n"
+		"    gl_FragColor = vec4(t.rgb, 1.0);\n"
+		"}\n";
+
+	/* Draw a square triangle strip. */
+	const GLfloat vertices[2 * num_vertices] = {
+		0, 0,
+		1, 0,
+		1, 1,
+		0, 1,
+	};
+
+	GLint vertex_loc;
+	GLuint vertex_buf;
+
+	piglit_require_extension("GL_AMD_compressed_ATC_texture");
+
+	load_texture(compressed_filename, &compressed_tex);
+	load_texture(decompressed_filename, &decompressed_tex);
+
+	glClearColor(1.0, 0.0, 0.0, 1.0);
+	glViewport(0, 0, window_width, window_height);
+
+	prog = piglit_build_simple_program(vs_source, fs_source);
+	glUseProgram(prog);
+
+	vertex_loc = glGetAttribLocation(prog, "vertex");
+	glGenBuffers(1, &vertex_buf);
+	glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
+	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);
+	glActiveTexture(GL_TEXTURE0);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
+	            window_width, window_height);
+}
+
+static void
+minify(int *x)
+{
+	assert(*x > 0);
+
+	if (*x > 1)
+		*x >>= 1;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	GLint pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
+	GLint level_pixel_size_loc = glGetUniformLocation(prog, "level_pixel_size");
+
+	int level = 0;
+	int level_width = level0_width;
+	int level_height = level0_height;
+	int y_offset = 0;
+
+	bool pass = true;
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	for (level = 0; level < num_levels; ++level) {
+		glUniform2f(level_pixel_size_loc,
+		            (float) level_width,
+		            (float) level_height);
+
+		/* Draw miplevel of compressed texture. */
+		glBindTexture(GL_TEXTURE_2D, compressed_tex);
+		glUniform2f(pixel_offset_loc, 0, y_offset);
+		glDrawArrays(GL_TRIANGLE_FAN, 0, num_vertices);
+
+		/* Draw miplevel of decompressed texture. */
+		glBindTexture(GL_TEXTURE_2D, decompressed_tex);
+		glUniform2f(pixel_offset_loc, level0_width, y_offset);
+		glDrawArrays(GL_TRIANGLE_FAN, 0, num_vertices);
+
+		y_offset += level_height;
+		minify(&level_width);
+		minify(&level_height);
+	}
+
+	pass = piglit_probe_rect_halves_equal_rgba(0, 0, window_width, window_height);
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
diff --git a/tests/spec/amd_compressed_atc_texture/waffles-compressed-atc-64x32.ktx b/tests/spec/amd_compressed_atc_texture/waffles-compressed-atc-64x32.ktx
new file mode 100644
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diff --git a/tests/spec/amd_compressed_atc_texture/waffles-decompressed-rgba-64x32.ktx b/tests/spec/amd_compressed_atc_texture/waffles-decompressed-rgba-64x32.ktx
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literal 0
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-- 
2.17.1



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