Add primitive topology tests
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Austin Eng
Austin Eng
parent
d81fd82bde
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d568bdad99
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@ -68,9 +68,10 @@ NXTInternalTarget("tests" nxt_unittests)
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add_executable(nxt_end2end_tests
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${END2END_TESTS_DIR}/BasicTests.cpp
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${END2END_TESTS_DIR}/BufferTests.cpp
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${END2END_TESTS_DIR}/InputStateTests.cpp
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${END2END_TESTS_DIR}/CopyTests.cpp
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${END2END_TESTS_DIR}/DepthStencilStateTests.cpp
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${END2END_TESTS_DIR}/InputStateTests.cpp
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${END2END_TESTS_DIR}/PrimitiveTopologyTests.cpp
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${TESTS_DIR}/End2EndTestsMain.cpp
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${TESTS_DIR}/NXTTest.cpp
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${TESTS_DIR}/NXTTest.h
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@ -0,0 +1,310 @@
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// Copyright 2017 The NXT Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "tests/NXTTest.h"
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#include "common/Assert.h"
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#include "utils/NXTHelpers.h"
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// Primitive topology tests work by drawing the following vertices with all the different primitive topology states:
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// -------------------------------------
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// | |
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// | 1 2 5 |
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// | |
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// | |
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// | |
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// | |
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// | 0 3 4 |
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// | |
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// -------------------------------------
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//
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// Points: This case looks exactly like above
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//
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// Lines
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// -------------------------------------
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// | |
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// | 1 2 5 |
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// | | | | |
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// | | | | |
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// | | | | |
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// | | | | |
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// | 0 3 4 |
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// | |
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// -------------------------------------
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//
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// Line Strip
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// -------------------------------------
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// | |
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// | 1--------2 5 |
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// | | | | |
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// | | | | |
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// | | | | |
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// | | | | |
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// | 0 3--------4 |
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// | |
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// -------------------------------------
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//
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// Triangle
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// -------------------------------------
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// | |
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// | 1--------2 5 |
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// | |xxxxxxx x| |
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// | |xxxxx xxx| |
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// | |xxx xxxxx| |
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// | |x xxxxxxx| |
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// | 0 3--------4 |
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// | |
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// -------------------------------------
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//
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// Triangle Strip
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// -------------------------------------
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// | |
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// | 1--------2 5 |
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// | |xxxxxxxxx x| |
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// | |xxxxxxxxxxx xxx| |
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// | |xxx xxxxxxxxxxx| |
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// | |x xxxxxxxxxx| |
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// | 0 3--------4 |
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// | |
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// -------------------------------------
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//
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// Each of these different states is a superset of some of the previous states,
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// so for every state, we check any new added test locations that are not contained in previous states
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// We also check that the test locations of subsequent states are untouched
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constexpr static unsigned int kRTSize = 32;
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struct TestLocation {
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unsigned int x, y;
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};
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constexpr TestLocation GetMidpoint(const TestLocation& a, const TestLocation& b) noexcept {
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return { (a.x + b.x) / 2, (a.y + b.y) / 2 };
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}
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constexpr TestLocation GetCentroid(const TestLocation& a, const TestLocation& b, const TestLocation& c) noexcept {
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return { (a.x + b.x + c.x) / 3, (a.y + b.y + c.y) / 3 };
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}
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// Offset towards one corner to avoid x or y symmetry false positives
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constexpr static unsigned int kOffset = kRTSize / 8;
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constexpr static TestLocation kPointTestLocations[] = {
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{ kRTSize * 1 / 4 + kOffset, kRTSize * 1 / 4 + kOffset },
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{ kRTSize * 1 / 4 + kOffset, kRTSize * 3 / 4 + kOffset },
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{ kRTSize * 2 / 4 + kOffset, kRTSize * 3 / 4 + kOffset },
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{ kRTSize * 2 / 4 + kOffset, kRTSize * 1 / 4 + kOffset },
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{ kRTSize * 3 / 4 + kOffset, kRTSize * 1 / 4 + kOffset },
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{ kRTSize * 3 / 4 + kOffset, kRTSize * 3 / 4 + kOffset },
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};
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constexpr static TestLocation kLineTestLocations[] = {
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GetMidpoint(kPointTestLocations[0], kPointTestLocations[1]),
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GetMidpoint(kPointTestLocations[2], kPointTestLocations[3]),
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GetMidpoint(kPointTestLocations[4], kPointTestLocations[5]),
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};
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constexpr static TestLocation kLineStripTestLocations[] = {
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GetMidpoint(kPointTestLocations[1], kPointTestLocations[2]),
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GetMidpoint(kPointTestLocations[3], kPointTestLocations[4]),
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};
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constexpr static TestLocation kTriangleTestLocations[] = {
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GetCentroid(kPointTestLocations[0], kPointTestLocations[1], kPointTestLocations[2]),
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GetCentroid(kPointTestLocations[3], kPointTestLocations[4], kPointTestLocations[5]),
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};
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constexpr static TestLocation kTriangleStripTestLocations[] = {
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GetCentroid(kPointTestLocations[1], kPointTestLocations[2], kPointTestLocations[3]),
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GetCentroid(kPointTestLocations[2], kPointTestLocations[3], kPointTestLocations[4]),
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};
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constexpr static float kRTSizef = static_cast<float>(kRTSize);
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constexpr static float kVertices[] = {
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2.f * (kPointTestLocations[0].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[0].y + 0.5f) / kRTSizef, 0.f, 1.f,
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2.f * (kPointTestLocations[1].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[1].y + 0.5f) / kRTSizef, 0.f, 1.f,
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2.f * (kPointTestLocations[2].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[2].y + 0.5f) / kRTSizef, 0.f, 1.f,
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2.f * (kPointTestLocations[3].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[3].y + 0.5f) / kRTSizef, 0.f, 1.f,
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2.f * (kPointTestLocations[4].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[4].y + 0.5f) / kRTSizef, 0.f, 1.f,
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2.f * (kPointTestLocations[5].x + 0.5f) / kRTSizef - 1.f, 1.f - 2.f * (kPointTestLocations[5].y + 0.5f) / kRTSizef, 0.f, 1.f,
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};
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class PrimitiveTopologyTest : public NXTTest {
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protected:
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void SetUp() override {
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NXTTest::SetUp();
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renderpass = device.CreateRenderPassBuilder()
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.SetAttachmentCount(1)
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.AttachmentSetFormat(0, nxt::TextureFormat::R8G8B8A8Unorm)
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.SetSubpassCount(1)
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.SubpassSetColorAttachment(0, 0, 0)
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.GetResult();
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renderTarget = device.CreateTextureBuilder()
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.SetDimension(nxt::TextureDimension::e2D)
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.SetExtent(kRTSize, kRTSize, 1)
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.SetFormat(nxt::TextureFormat::R8G8B8A8Unorm)
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.SetMipLevels(1)
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.SetAllowedUsage(nxt::TextureUsageBit::OutputAttachment | nxt::TextureUsageBit::TransferSrc)
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.SetInitialUsage(nxt::TextureUsageBit::OutputAttachment)
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.GetResult();
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renderTargetView = renderTarget.CreateTextureViewBuilder().GetResult();
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framebuffer = device.CreateFramebufferBuilder()
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.SetRenderPass(renderpass)
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.SetAttachment(0, renderTargetView)
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.SetDimensions(kRTSize, kRTSize)
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.GetResult();
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vsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Vertex, R"(
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#version 450
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layout(location = 0) in vec4 pos;
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void main() {
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gl_Position = pos;
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})"
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);
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fsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, R"(
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#version 450
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out vec4 fragColor;
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void main() {
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fragColor = vec4(0.0, 1.0, 0.0, 1.0);
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})"
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);
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inputState = device.CreateInputStateBuilder()
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.SetAttribute(0, 0, nxt::VertexFormat::FloatR32G32B32A32, 0)
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.SetInput(0, 4 * sizeof(float), nxt::InputStepMode::Vertex)
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.GetResult();
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vertexBuffer = utils::CreateFrozenBufferFromData(device, kVertices, sizeof(kVertices), nxt::BufferUsageBit::Vertex);
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}
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struct LocationSpec {
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const TestLocation* locations;
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size_t count;
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bool include;
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};
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template <std::size_t N>
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constexpr LocationSpec TestPoints(TestLocation const (&points)[N], bool include) noexcept {
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return { points, N, include };
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}
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// Draw the vertices with the given primitive topology and check the pixel values of the test locations
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void DoTest(nxt::PrimitiveTopology primitiveTopology, const std::vector<LocationSpec> &locationSpecs) {
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nxt::RenderPipeline pipeline = device.CreateRenderPipelineBuilder()
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.SetSubpass(renderpass, 0)
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.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
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.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
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.SetInputState(inputState)
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.SetPrimitiveTopology(primitiveTopology)
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.GetResult();
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renderTarget.TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
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static const uint32_t zeroOffset = 0;
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nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
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.BeginRenderPass(renderpass, framebuffer)
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.BeginRenderSubpass()
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.SetRenderPipeline(pipeline)
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.SetVertexBuffers(0, 1, &vertexBuffer, &zeroOffset)
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.DrawArrays(6, 1, 0, 0)
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.EndRenderSubpass()
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.EndRenderPass()
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.GetResult();
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queue.Submit(1, &commands);
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for (auto& locationSpec : locationSpecs) {
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for (size_t i = 0; i < locationSpec.count; ++i) {
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// If this pixel is included, check that it is green. Otherwise, check that it is black
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RGBA8 color = locationSpec.include ? RGBA8(0, 255, 0, 255) : RGBA8(0, 0, 0, 0);
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EXPECT_PIXEL_RGBA8_EQ(color, renderTarget, locationSpec.locations[i].x, locationSpec.locations[i].y)
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<< "Expected (" << locationSpec.locations[i].x << ", " << locationSpec.locations[i].y << ") to be " << color;
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}
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}
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}
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nxt::RenderPass renderpass;
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nxt::Texture renderTarget;
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nxt::TextureView renderTargetView;
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nxt::Framebuffer framebuffer;
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nxt::ShaderModule vsModule;
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nxt::ShaderModule fsModule;
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nxt::InputState inputState;
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nxt::Buffer vertexBuffer;
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};
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// Test Point primitive topology
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TEST_P(PrimitiveTopologyTest, Point) {
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DoTest(nxt::PrimitiveTopology::Point, {
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// Check that the points are drawn
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TestPoints(kPointTestLocations, true),
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// Check that line and triangle locations are untouched
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TestPoints(kLineTestLocations, false),
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TestPoints(kLineStripTestLocations, false),
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TestPoints(kTriangleTestLocations, false),
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TestPoints(kTriangleStripTestLocations, false),
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});
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}
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// Test Line primitive topology
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TEST_P(PrimitiveTopologyTest, Line) {
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DoTest(nxt::PrimitiveTopology::Line, {
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// Check that lines are drawn
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TestPoints(kLineTestLocations, true),
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// Check that line strip and triangle locations are untouched
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TestPoints(kLineStripTestLocations, false),
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TestPoints(kTriangleTestLocations, false),
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TestPoints(kTriangleStripTestLocations, false),
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});
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}
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// Test LineStrip primitive topology
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TEST_P(PrimitiveTopologyTest, LineStrip) {
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DoTest(nxt::PrimitiveTopology::LineStrip, {
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// Check that lines are drawn
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TestPoints(kLineTestLocations, true),
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TestPoints(kLineStripTestLocations, true),
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// Check that triangle locations are untouched
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TestPoints(kTriangleTestLocations, false),
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TestPoints(kTriangleStripTestLocations, false),
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});
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}
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// Test Triangle primitive topology
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TEST_P(PrimitiveTopologyTest, Triangle) {
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DoTest(nxt::PrimitiveTopology::Triangle, {
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// Check that triangles are drawn
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TestPoints(kTriangleTestLocations, true),
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// Check that triangle strip locations are untouched
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TestPoints(kTriangleStripTestLocations, false),
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});
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}
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// Test TriangleStrip primitive topology
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TEST_P(PrimitiveTopologyTest, TriangleStrip) {
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DoTest(nxt::PrimitiveTopology::TriangleStrip, {
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TestPoints(kTriangleTestLocations, true),
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TestPoints(kTriangleStripTestLocations, true),
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});
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}
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NXT_INSTANTIATE_TEST(PrimitiveTopologyTest, D3D12Backend, MetalBackend)
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