[Piglit] [PATCH V2] etc2: Add test to verify texturing with etc2 miptree

Anuj Phogat anuj.phogat at gmail.com
Wed Nov 21 13:50:07 PST 2012


This test make use of code from an existing etc1 test in
tests/spec/oes_compressed_etc1_rgb8_texture

Verifies texturing with following etc2 formats:
GL_COMPRESSED_RGB8_ETC2
GL_COMPRESSED_SRGB8_ETC2
GL_COMPRESSED_RGBA8_ETC2_EAC
GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
GL_COMPRESSED_R11_EAC
GL_COMPRESSED_RG11_EAC
GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2

Each format requires a compressed and decompressed texture data file,
which are added as a part of this commit. Tests for above formats
currently passes on 'gles3' branch using Intel hardware.

Signed formats are excluded from this test case because the decompressed
image (.ppm) generated by ericsson's etcpack tool converts a decoded
16 bit signed data to 16 bit unsigned data by adding 2 ^ 15. But gles 3.0
specification doesn't suggest this conversion. This conversion results in
a slightly different image than the decoded image by mesa.

GL_COMPRESSED_SIGNED_R11_EAC
GL_COMPRESSED_SIGNED_RG11_EAC

Note: mesa (gles3 branch) passes all etc2 conformance tests on intel h/w
including the signed formats.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 tests/spec/CMakeLists.txt                          |    1 +
 tests/spec/gles-3.0/CMakeLists.gles2.txt           |   11 +
 tests/spec/gles-3.0/CMakeLists.txt                 |    1 +
 .../gles-3.0/oes_compressed_etc2_texture-miptree.c |  312 ++++++++++++++++++++
 .../waffles-compressed-etc2-r11-64x32-miptree.ktx  |  Bin 0 -> 1476 bytes
 .../waffles-compressed-etc2-rg11-64x32-miptree.ktx |  Bin 0 -> 2860 bytes
 .../waffles-compressed-etc2-rgb8-64x32-miptree.ktx |  Bin 0 -> 1476 bytes
 ...ompressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx |  Bin 0 -> 1476 bytes
 ...waffles-compressed-etc2-rgba8-64x32-miptree.ktx |  Bin 0 -> 2860 bytes
 ...waffles-compressed-etc2-srgb8-64x32-miptree.ktx |  Bin 0 -> 1476 bytes
 ...-compressed-etc2-srgb8-alpha8-64x32-miptree.ktx |  Bin 0 -> 2860 bytes
 ...mpressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx |  Bin 0 -> 1476 bytes
 ...waffles-decompressed-etc2-r11-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...affles-decompressed-etc2-rg11-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...affles-decompressed-etc2-rgb8-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...ompressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...ffles-decompressed-etc2-rgba8-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...ffles-decompressed-etc2-srgb8-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...ecompressed-etc2-srgb8-alpha8-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 ...mpressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx |  Bin 0 -> 11016 bytes
 20 files changed, 325 insertions(+), 0 deletions(-)
 create mode 100644 tests/spec/gles-3.0/CMakeLists.gles2.txt
 create mode 100644 tests/spec/gles-3.0/CMakeLists.txt
 create mode 100644 tests/spec/gles-3.0/oes_compressed_etc2_texture-miptree.c
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-r11-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-rg11-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-rgba8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-srgb8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-srgb8-alpha8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-compressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-r11-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-rg11-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-rgb8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-rgba8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-alpha8-64x32-miptree.ktx
 create mode 100644 tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx

diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
index c2a7886..46a91bd 100644
--- a/tests/spec/CMakeLists.txt
+++ b/tests/spec/CMakeLists.txt
@@ -51,6 +51,7 @@ add_subdirectory (gl-2.0)
 add_subdirectory (gl-2.1)
 add_subdirectory (gl-3.0)
 add_subdirectory (gl-3.1)
+add_subdirectory (gles-3.0)
 add_subdirectory (glx_arb_create_context)
 add_subdirectory (glx_ext_import_context)
 add_subdirectory (glx_oml_sync_control)
diff --git a/tests/spec/gles-3.0/CMakeLists.gles2.txt b/tests/spec/gles-3.0/CMakeLists.gles2.txt
new file mode 100644
index 0000000..2bfd529
--- /dev/null
+++ b/tests/spec/gles-3.0/CMakeLists.gles2.txt
@@ -0,0 +1,11 @@
+include_directories(
+	${GLEXT_INCLUDE_DIR}
+	${OPENGL_INCLUDE_PATH}
+)
+
+link_libraries(
+        piglitutil_${piglit_target_api}
+        ${OPENGL_gles2_LIBRARY}
+        )
+
+piglit_add_executable(oes_compressed_etc2_texture-miptree oes_compressed_etc2_texture-miptree.c)
diff --git a/tests/spec/gles-3.0/CMakeLists.txt b/tests/spec/gles-3.0/CMakeLists.txt
new file mode 100644
index 0000000..144a306
--- /dev/null
+++ b/tests/spec/gles-3.0/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/spec/gles-3.0/oes_compressed_etc2_texture-miptree.c b/tests/spec/gles-3.0/oes_compressed_etc2_texture-miptree.c
new file mode 100644
index 0000000..d76c541
--- /dev/null
+++ b/tests/spec/gles-3.0/oes_compressed_etc2_texture-miptree.c
@@ -0,0 +1,312 @@
+/*
+ * 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 ETC2 miptree of a real image.
+ *
+ * This test uses two data files for each etc2 format:
+ * The file waffles-compressed-etc2-xxxx-64x32-mipmap.ktx contains a full
+ * miptree in compressed ETC2 format of a 2D texture of waffles and fruit [1].
+ * The base level size is 64x32 pixels.
+ * The file waffles-decompressed-xxxx-64x32-mipmap.ktx contains a parallel
+ * miptree in corresponding decompressed format. Each of its images was
+ * obtained by decompressing the corresponding ETC2 image with etcpack [2].
+ *
+ * This test draws each miplevel i of the ETC2 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 ETC2 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] etcpack version 2.60 is the reference ETC2 compression tool, available at:
+ * http://devtools.ericsson.com/etc.
+ */
+
+#include "piglit-util-gl-common.h"
+#include "piglit_ktx.h"
+
+static const int num_levels = 7;
+static const int level0_width = 64;
+static const int level0_height = 32;
+static const int num_vertices = 4;
+static const int window_width = 128;
+static const int window_height = 64;
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_es2 = true;
+	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",
+	                  "gles-3.0",
+	                  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
+print_usage_and_exit(char *prog_name)
+{
+        printf("Usage: %s <format>\n"
+               "  where <format> is one of:\n"
+	       "    rgb8\n"
+	       "    srgb8\n"
+	       "    rgba8\n"
+	       "    srgb8-alpha8\n"
+	       "    r11\n"
+	       "    rg11\n"
+	       "    rgb8-punchthrough-alpha1\n"
+	       "    srgb8-punchthrough-alpha1\n", prog_name);
+	piglit_report_result(PIGLIT_FAIL);
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	static const char *compressed_filename;
+	static const char *decompressed_filename;
+	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"
+		"\n"
+		"uniform sampler2D tex;\n"
+		"varying vec2 tex_coord;\n"
+		"\n"
+		"void main()\n"
+		"{\n"
+		"    gl_FragColor = texture2D(tex, tex_coord);\n"
+		"}\n";
+
+	/* Draw a square triangle fan. */
+	const GLfloat vertices[8] = {
+		0, 0,
+		1, 0,
+		1, 1,
+		0, 1,
+	};
+
+	GLuint vs;
+	GLuint fs;
+
+	GLint vertex_loc;
+	GLuint vertex_buf;
+
+	if (argc < 2)
+		print_usage_and_exit(argv[0]);
+
+	if (strcmp(argv[1], "rgb8") == 0) {
+		compressed_filename =
+			"waffles-compressed-etc2-rgb8-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-rgb8-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "srgb8") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-srgb8-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-srgb8-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "rgba8") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-rgba8-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-rgba8-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "srgb8-alpha8") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-srgb8-alpha8-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-srgb8-alpha8-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "r11") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-r11-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-r11-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "rg11") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-rg11-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-rg11-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "rgb8-punchthrough-alpha1") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx";
+	} else if (strcmp(argv[1], "srgb8-punchthrough-alpha1") == 0){
+		compressed_filename =
+			"waffles-compressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx";
+		decompressed_filename =
+			"waffles-decompressed-etc2-srgb8-pt-alpha1-64x32-miptree.ktx";
+	} else {
+	        printf("Invalid format\n");
+		print_usage_and_exit(argv[0]);
+        }
+
+	if((strcmp(argv[1], "rgba8") == 0) |
+	   (strcmp(argv[1], "srgb8-alpha8") == 0) |
+	   (strcmp(argv[1], "rgb8-punchthrough-alpha1") == 0) |
+	   (strcmp(argv[1], "srgb8-punchthrough-alpha1") == 0))
+	{
+		/* Enable blending */
+		glEnable(GL_BLEND);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+	}
+
+	load_texture(compressed_filename, &compressed_tex);
+	load_texture(decompressed_filename, &decompressed_tex);
+
+	glClearColor(0.3, 0.5, 1.0, 1.0);
+	glViewport(0, 0, window_width, window_height);
+
+	vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
+	fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
+	prog = piglit_link_simple_program(vs, fs);
+	assert(prog != 0);
+	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/gles-3.0/waffles-compressed-etc2-r11-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-r11-64x32-miptree.ktx
new file mode 100644
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diff --git a/tests/spec/gles-3.0/waffles-compressed-etc2-rg11-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-rg11-64x32-miptree.ktx
new file mode 100644
index 0000000000000000000000000000000000000000..a2a952a8ec2e118fa332dc15168274ef6e60c854
GIT binary patch
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diff --git a/tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-64x32-miptree.ktx
new file mode 100644
index 0000000000000000000000000000000000000000..a1df9f2cf5b5c8d410e0b5af6a325f7384f21a8b
GIT binary patch
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diff --git a/tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-rgb8-pt-alpha1-64x32-miptree.ktx
new file mode 100644
index 0000000000000000000000000000000000000000..38aa1a1337ed00c3f4863ecfcc049caebbd773be
GIT binary patch
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diff --git a/tests/spec/gles-3.0/waffles-compressed-etc2-rgba8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-rgba8-64x32-miptree.ktx
new file mode 100644
index 0000000000000000000000000000000000000000..4ae0670182af450ad3162790847900b98ac78c0c
GIT binary patch
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diff --git a/tests/spec/gles-3.0/waffles-compressed-etc2-srgb8-alpha8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-compressed-etc2-srgb8-alpha8-64x32-miptree.ktx
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diff --git a/tests/spec/gles-3.0/waffles-decompressed-etc2-r11-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-decompressed-etc2-r11-64x32-miptree.ktx
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diff --git a/tests/spec/gles-3.0/waffles-decompressed-etc2-rg11-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-decompressed-etc2-rg11-64x32-miptree.ktx
new file mode 100644
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diff --git a/tests/spec/gles-3.0/waffles-decompressed-etc2-rgb8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-decompressed-etc2-rgb8-64x32-miptree.ktx
new file mode 100644
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diff --git a/tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-64x32-miptree.ktx
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diff --git a/tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-alpha8-64x32-miptree.ktx b/tests/spec/gles-3.0/waffles-decompressed-etc2-srgb8-alpha8-64x32-miptree.ktx
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literal 0
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-- 
1.7.7.6



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