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https://github.com/RGBCube/serenity
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8cfabbcd93
Each LibGL test can now be tested against a reference QOI image. Initially, these images can be generated by setting `SAVE_OUTPUT` to `true`, which will save a bunch of QOI images to `/home/anon`.
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, Leon Albrecht <leon2002.la@gmail.com>
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* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/LexicalPath.h>
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#include <AK/String.h>
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#include <LibCore/FileStream.h>
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#include <LibGL/GL/gl.h>
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#include <LibGL/GLContext.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/QOIWriter.h>
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#include <LibTest/TestCase.h>
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#ifdef __serenity__
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# define REFERENCE_IMAGE_DIR "/usr/Tests/LibGL/reference-images"
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#else
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# define REFERENCE_IMAGE_DIR "reference-images"
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#endif
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#define SAVE_OUTPUT false
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static NonnullOwnPtr<GL::GLContext> create_testing_context(int width, int height)
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{
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auto bitmap = MUST(Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { width, height }));
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auto context = GL::create_context(*bitmap);
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GL::make_context_current(context);
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return context;
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}
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static void expect_bitmap_equals_reference(Gfx::Bitmap const& bitmap, StringView test_name)
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{
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auto reference_filename = String::formatted("{}.qoi", test_name);
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if constexpr (SAVE_OUTPUT) {
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auto target_path = LexicalPath("/home/anon").append(reference_filename);
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auto qoi_buffer = Gfx::QOIWriter::encode(bitmap);
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auto qoi_output_stream = MUST(Core::OutputFileStream::open(target_path.string()));
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auto number_of_bytes_written = qoi_output_stream.write(qoi_buffer);
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qoi_output_stream.close();
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EXPECT_EQ(number_of_bytes_written, qoi_buffer.size());
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}
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auto reference_image_path = String::formatted(REFERENCE_IMAGE_DIR "/{}", reference_filename);
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auto reference_bitmap = MUST(Gfx::Bitmap::try_load_from_file(reference_image_path));
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EXPECT_EQ(reference_bitmap->visually_equals(bitmap), true);
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}
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TEST_CASE(0001_simple_triangle)
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{
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auto context = create_testing_context(64, 64);
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glFrontFace(GL_CCW);
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glCullFace(GL_BACK);
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glEnable(GL_CULL_FACE);
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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glBegin(GL_TRIANGLES);
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glColor3f(1, 1, 1);
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glVertex2f(0, 1);
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glVertex2f(-1, -1);
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glVertex2f(1, -1);
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glEnd();
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EXPECT_EQ(glGetError(), 0u);
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context->present();
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expect_bitmap_equals_reference(context->frontbuffer(), "0001_simple_triangle");
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}
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TEST_CASE(0002_quad_color_interpolation)
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{
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auto context = create_testing_context(64, 64);
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glFrontFace(GL_CCW);
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glCullFace(GL_BACK);
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glEnable(GL_CULL_FACE);
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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glBegin(GL_QUADS);
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glColor3f(1, 0, 0);
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glVertex2i(-1, -1);
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glColor3f(0, 1, 0);
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glVertex2i(1, -1);
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glColor3f(0, 0, 1);
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glVertex2i(1, 1);
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glColor3f(1, 0, 1);
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glVertex2i(-1, 1);
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glEnd();
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EXPECT_EQ(glGetError(), 0u);
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context->present();
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expect_bitmap_equals_reference(context->frontbuffer(), "0002_quad_color_interpolation");
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}
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