841 lines
38 KiB
C++
841 lines
38 KiB
C++
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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 <array>
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#include <cmath>
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#include "tests/NXTTest.h"
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#include "common/Assert.h"
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#include "common/Constants.h"
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#include "utils/NXTHelpers.h"
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constexpr static unsigned int kRTSize = 64;
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class BlendStateTest : public NXTTest {
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protected:
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void SetUp() override {
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NXTTest::SetUp();
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vsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Vertex, R"(
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#version 450
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void main() {
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const vec2 pos[3] = vec2[3](vec2(-1.f, -1.f), vec2(3.f, -1.f), vec2(-1.f, 3.f));
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gl_Position = vec4(pos[gl_VertexIndex], 0.f, 1.f);
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}
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)");
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bindGroupLayout = device.CreateBindGroupLayoutBuilder()
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.SetBindingsType(nxt::ShaderStageBit::Fragment, nxt::BindingType::UniformBuffer, 0, 1)
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.GetResult();
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pipelineLayout = device.CreatePipelineLayoutBuilder()
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.SetBindGroupLayout(0, bindGroupLayout)
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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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renderpass = device.CreateRenderPassBuilder()
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.SetAttachmentCount(1)
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.SetSubpassCount(1)
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.AttachmentSetFormat(0, nxt::TextureFormat::R8G8B8A8Unorm)
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.SubpassSetColorAttachment(0, 0, 0)
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.GetResult();
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framebuffer = device.CreateFramebufferBuilder()
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.SetRenderPass(renderpass)
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.SetDimensions(kRTSize, kRTSize)
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.SetAttachment(0, renderTargetView)
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.GetResult();
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}
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struct TriangleSpec {
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RGBA8 color;
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std::array<float, 4> blendFactor = {};
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};
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// Set up basePipeline and testPipeline. testPipeline has the given blend state on the first attachment. basePipeline has no blending
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void SetupSingleSourcePipelines(const nxt::BlendState &blendState) {
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nxt::ShaderModule fsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, R"(
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#version 450
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layout(set = 0, binding = 0) uniform myBlock {
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vec4 color;
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} myUbo;
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layout(location = 0) out vec4 fragColor;
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void main() {
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fragColor = myUbo.color;
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}
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)");
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basePipeline = device.CreateRenderPipelineBuilder()
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.SetSubpass(renderpass, 0)
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.SetLayout(pipelineLayout)
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.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
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.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
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.GetResult();
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testPipeline = device.CreateRenderPipelineBuilder()
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.SetSubpass(renderpass, 0)
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.SetLayout(pipelineLayout)
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.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
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.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
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.SetColorAttachmentBlendState(0, blendState)
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.GetResult();
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}
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// Create a bind group to set the colors as a uniform buffer
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template <size_t N>
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nxt::BindGroup MakeBindGroupForColors(std::array<RGBA8, N> colors) {
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std::array<float, 4 * N> data;
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for (unsigned int i = 0; i < N; ++i) {
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data[4 * i + 0] = static_cast<float>(colors[i].r) / 255.f;
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data[4 * i + 1] = static_cast<float>(colors[i].g) / 255.f;
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data[4 * i + 2] = static_cast<float>(colors[i].b) / 255.f;
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data[4 * i + 3] = static_cast<float>(colors[i].a) / 255.f;
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}
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uint32_t bufferSize = static_cast<uint32_t>(4 * N * sizeof(float));
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nxt::Buffer buffer = utils::CreateFrozenBufferFromData(device, &data, bufferSize, nxt::BufferUsageBit::Uniform);
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nxt::BufferView view = buffer.CreateBufferViewBuilder()
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.SetExtent(0, bufferSize)
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.GetResult();
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return device.CreateBindGroupBuilder()
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.SetLayout(bindGroupLayout)
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.SetUsage(nxt::BindGroupUsage::Frozen)
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.SetBufferViews(0, 1, &view)
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.GetResult();
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}
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// Test that after drawing a triangle with the base color, and then the given triangle spec, the color is as expected
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void DoSingleSourceTest(RGBA8 base, const TriangleSpec& triangle, const RGBA8& expected) {
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renderTarget.TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
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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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// First use the base pipeline to draw a triangle with no blending
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.SetRenderPipeline(basePipeline)
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.SetBindGroup(0, MakeBindGroupForColors(std::array<RGBA8, 1>({ { base } })))
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.DrawArrays(3, 1, 0, 0)
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// Then use the test pipeline to draw the test triangle with blending
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.SetRenderPipeline(testPipeline)
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.SetBindGroup(0, MakeBindGroupForColors(std::array<RGBA8, 1>({ { triangle.color } })))
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.SetBlendColor(triangle.blendFactor[0], triangle.blendFactor[1], triangle.blendFactor[2], triangle.blendFactor[3])
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.DrawArrays(3, 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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EXPECT_PIXEL_RGBA8_EQ(expected, renderTarget, kRTSize / 2, kRTSize / 2);
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}
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// Given a vector of tests where each element is <testColor, expectedColor>, check that all expectations are true for the given blend operation
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void CheckBlendOperation(RGBA8 base, nxt::BlendOperation operation, std::vector<std::pair<RGBA8, RGBA8>> tests) {
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nxt::BlendState blendState = device.CreateBlendStateBuilder()
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.SetBlendEnabled(true)
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.SetColorBlend(operation, nxt::BlendFactor::One, nxt::BlendFactor::One)
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.SetAlphaBlend(operation, nxt::BlendFactor::One, nxt::BlendFactor::One)
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.GetResult();
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SetupSingleSourcePipelines(blendState);
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for (const auto& test : tests) {
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DoSingleSourceTest(base, { test.first }, test.second);
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}
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}
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// Given a vector of tests where each element is <testSpec, expectedColor>, check that all expectations are true for the given blend factors
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void CheckBlendFactor(RGBA8 base, nxt::BlendFactor colorSrcFactor, nxt::BlendFactor colorDstFactor, nxt::BlendFactor alphaSrcFactor, nxt::BlendFactor alphaDstFactor, std::vector<std::pair<TriangleSpec, RGBA8>> tests) {
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nxt::BlendState blendState = device.CreateBlendStateBuilder()
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.SetBlendEnabled(true)
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.SetColorBlend(nxt::BlendOperation::Add, colorSrcFactor, colorDstFactor)
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.SetAlphaBlend(nxt::BlendOperation::Add, alphaSrcFactor, alphaDstFactor)
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.GetResult();
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SetupSingleSourcePipelines(blendState);
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for (const auto& test : tests) {
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DoSingleSourceTest(base, test.first, test.second);
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}
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}
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void CheckSrcBlendFactor(RGBA8 base, nxt::BlendFactor colorFactor, nxt::BlendFactor alphaFactor, std::vector<std::pair<TriangleSpec, RGBA8>> tests) {
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CheckBlendFactor(base, colorFactor, nxt::BlendFactor::One, alphaFactor, nxt::BlendFactor::One, tests);
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}
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void CheckDstBlendFactor(RGBA8 base, nxt::BlendFactor colorFactor, nxt::BlendFactor alphaFactor, std::vector<std::pair<TriangleSpec, RGBA8>> tests) {
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CheckBlendFactor(base, nxt::BlendFactor::One, colorFactor, nxt::BlendFactor::One, alphaFactor, tests);
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}
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nxt::Framebuffer framebuffer;
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nxt::RenderPass renderpass;
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nxt::RenderPipeline basePipeline;
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nxt::RenderPipeline testPipeline;
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nxt::Texture renderTarget;
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nxt::TextureView renderTargetView;
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nxt::ShaderModule vsModule;
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nxt::BindGroupLayout bindGroupLayout;
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nxt::PipelineLayout pipelineLayout;
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};
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namespace {
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// Add two colors and clamp
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constexpr RGBA8 operator+(const RGBA8& col1, const RGBA8& col2) {
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int r = static_cast<int>(col1.r) + static_cast<int>(col2.r);
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int g = static_cast<int>(col1.g) + static_cast<int>(col2.g);
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int b = static_cast<int>(col1.b) + static_cast<int>(col2.b);
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int a = static_cast<int>(col1.a) + static_cast<int>(col2.a);
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r = (r > 255 ? 255 : (r < 0 ? 0 : r));
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g = (g > 255 ? 255 : (g < 0 ? 0 : g));
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b = (b > 255 ? 255 : (b < 0 ? 0 : b));
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a = (a > 255 ? 255 : (a < 0 ? 0 : a));
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return RGBA8(static_cast<uint8_t>(r), static_cast<uint8_t>(g), static_cast<uint8_t>(b), static_cast<uint8_t>(a));
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}
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// Subtract two colors and clamp
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constexpr RGBA8 operator-(const RGBA8& col1, const RGBA8& col2) {
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int r = static_cast<int>(col1.r) - static_cast<int>(col2.r);
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int g = static_cast<int>(col1.g) - static_cast<int>(col2.g);
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int b = static_cast<int>(col1.b) - static_cast<int>(col2.b);
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int a = static_cast<int>(col1.a) - static_cast<int>(col2.a);
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r = (r > 255 ? 255 : (r < 0 ? 0 : r));
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g = (g > 255 ? 255 : (g < 0 ? 0 : g));
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b = (b > 255 ? 255 : (b < 0 ? 0 : b));
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a = (a > 255 ? 255 : (a < 0 ? 0 : a));
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return RGBA8(static_cast<uint8_t>(r), static_cast<uint8_t>(g), static_cast<uint8_t>(b), static_cast<uint8_t>(a));
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}
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// Get the component-wise minimum of two colors
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RGBA8 min(const RGBA8& col1, const RGBA8& col2) {
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return RGBA8(
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std::min(col1.r, col2.r),
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std::min(col1.g, col2.g),
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std::min(col1.b, col2.b),
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std::min(col1.a, col2.a)
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);
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}
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// Get the component-wise maximum of two colors
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RGBA8 max(const RGBA8& col1, const RGBA8& col2) {
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return RGBA8(
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std::max(col1.r, col2.r),
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std::max(col1.g, col2.g),
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std::max(col1.b, col2.b),
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std::max(col1.a, col2.a)
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);
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}
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// Blend two RGBA8 color values parameterized by the provided factors in the range [0.f, 1.f]
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RGBA8 mix(const RGBA8& col1, const RGBA8& col2, std::array<float, 4> fac) {
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float r = static_cast<float>(col1.r) * (1.f - fac[0]) + static_cast<float>(col2.r) * fac[0];
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float g = static_cast<float>(col1.g) * (1.f - fac[1]) + static_cast<float>(col2.g) * fac[1];
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float b = static_cast<float>(col1.b) * (1.f - fac[2]) + static_cast<float>(col2.b) * fac[2];
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float a = static_cast<float>(col1.a) * (1.f - fac[3]) + static_cast<float>(col2.a) * fac[3];
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return RGBA8({ static_cast<uint8_t>(std::round(r)), static_cast<uint8_t>(std::round(g)), static_cast<uint8_t>(std::round(b)), static_cast<uint8_t>(std::round(a)) });
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}
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// Blend two RGBA8 color values parameterized by the provided RGBA8 factor
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RGBA8 mix(const RGBA8& col1, const RGBA8& col2, const RGBA8& fac) {
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std::array<float, 4> f = { {
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static_cast<float>(fac.r) / 255.f,
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static_cast<float>(fac.g) / 255.f,
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static_cast<float>(fac.b) / 255.f,
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static_cast<float>(fac.a) / 255.f,
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} };
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return mix(col1, col2, f);
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}
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constexpr std::array<RGBA8, 8> kColors = { {
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// check operations over multiple channels
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RGBA8(64,0,0,0),
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RGBA8(0,64,0,0),
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RGBA8(64,0,32,0),
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RGBA8(0,64,32,0),
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RGBA8(128,0,128,128),
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RGBA8(0,128,128,128),
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// check cases that may cause overflow
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RGBA8(0,0,0,0),
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RGBA8(255,255,255,255),
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} };
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}
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// Test compilation and usage of the fixture
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TEST_P(BlendStateTest, Basic) {
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nxt::BlendState blendState = device.CreateBlendStateBuilder().GetResult();
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SetupSingleSourcePipelines(blendState);
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DoSingleSourceTest(RGBA8(0, 0, 0, 0), { RGBA8(255, 0, 0, 0) }, RGBA8(255, 0, 0, 0));
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}
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// The following tests check test that the blend operation works
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TEST_P(BlendStateTest, BlendOperationAdd) {
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RGBA8 base(32, 64, 128, 192);
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std::vector<std::pair<RGBA8, RGBA8>> tests;
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std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
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return std::make_pair(color, base + color);
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});
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CheckBlendOperation(base, nxt::BlendOperation::Add, tests);
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}
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TEST_P(BlendStateTest, BlendOperationSubtract) {
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RGBA8 base(32, 64, 128, 192);
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std::vector<std::pair<RGBA8, RGBA8>> tests;
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std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
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return std::make_pair(color, color - base);
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|
});
|
||
|
|
CheckBlendOperation(base, nxt::BlendOperation::Subtract, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, BlendOperationReverseSubtract) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<RGBA8, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(color, base - color);
|
||
|
|
});
|
||
|
|
CheckBlendOperation(base, nxt::BlendOperation::ReverseSubtract, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, BlendOperationMin) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<RGBA8, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(color, min(base, color));
|
||
|
|
});
|
||
|
|
CheckBlendOperation(base, nxt::BlendOperation::Min, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, BlendOperationMax) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<RGBA8, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(color, max(base, color));
|
||
|
|
});
|
||
|
|
CheckBlendOperation(base, nxt::BlendOperation::Max, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
// The following tests check that the Source blend factor works
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorZero) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), base);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::Zero, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOne) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), base + color);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::One, nxt::BlendFactor::One, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorSrcColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = color;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::SrcColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOneMinusSrcColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - color;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::OneMinusSrcColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorSrcAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac(color.a, color.a, color.a, color.a);
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::SrcAlpha, nxt::BlendFactor::SrcAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOneMinusSrcAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - RGBA8(color.a, color.a, color.a, color.a);
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::OneMinusSrcAlpha, nxt::BlendFactor::OneMinusSrcAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorDstColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = base;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::DstColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOneMinusDstColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - base;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::OneMinusDstColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorDstAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac(base.a, base.a, base.a, base.a);
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::DstAlpha, nxt::BlendFactor::DstAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOneMinusDstAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - RGBA8(base.a, base.a, base.a, base.a);
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::OneMinusDstAlpha, nxt::BlendFactor::OneMinusDstAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorSrcAlphaSaturated) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
uint8_t f = std::min(color.a, static_cast<uint8_t>(255 - base.a));
|
||
|
|
RGBA8 fac(f, f, f, 255);
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::SrcAlphaSaturated, nxt::BlendFactor::SrcAlphaSaturated, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorBlendColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
auto triangleSpec = TriangleSpec({ { color }, {{ 0.2f, 0.4f, 0.6f, 0.8f }} });
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, triangleSpec.blendFactor);
|
||
|
|
return std::make_pair(triangleSpec, expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::BlendColor, nxt::BlendFactor::BlendColor, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, SrcBlendFactorOneMinusBlendColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
auto triangleSpec = TriangleSpec({ { color }, {{ 0.2f, 0.4f, 0.6f, 0.8f }} });
|
||
|
|
std::array<float, 4> f = { { 0.8f, 0.6f, 0.4f, 0.2f } };
|
||
|
|
RGBA8 expected = base + mix(RGBA8(0, 0, 0, 0), color, f);
|
||
|
|
return std::make_pair(triangleSpec, expected);
|
||
|
|
});
|
||
|
|
CheckSrcBlendFactor(base, nxt::BlendFactor::OneMinusBlendColor, nxt::BlendFactor::OneMinusBlendColor, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
// The following tests check that the Destination blend factor works
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorZero) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), color);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::Zero, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOne) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), base + color);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::One, nxt::BlendFactor::One, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorSrcColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = color;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::SrcColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOneMinusSrcColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - color;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::OneMinusSrcColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorSrcAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac(color.a, color.a, color.a, color.a);
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::SrcAlpha, nxt::BlendFactor::SrcAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOneMinusSrcAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - RGBA8(color.a, color.a, color.a, color.a);
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::OneMinusSrcAlpha, nxt::BlendFactor::OneMinusSrcAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorDstColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = base;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::DstColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOneMinusDstColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - base;
|
||
|
|
fac.a = 0;
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::OneMinusDstColor, nxt::BlendFactor::Zero, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorDstAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac(base.a, base.a, base.a, base.a);
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::DstAlpha, nxt::BlendFactor::DstAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOneMinusDstAlpha) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
RGBA8 fac = RGBA8(255, 255, 255, 255) - RGBA8(base.a, base.a, base.a, base.a);
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::OneMinusDstAlpha, nxt::BlendFactor::OneMinusDstAlpha, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorSrcAlphaSaturated) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
uint8_t f = std::min(color.a, static_cast<uint8_t>(255 - base.a));
|
||
|
|
RGBA8 fac(f, f, f, 255);
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, fac);
|
||
|
|
return std::make_pair(TriangleSpec({ { color } }), expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::SrcAlphaSaturated, nxt::BlendFactor::SrcAlphaSaturated, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorBlendColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
auto triangleSpec = TriangleSpec({ { color }, {{ 0.2f, 0.4f, 0.6f, 0.8f }} });
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, triangleSpec.blendFactor);
|
||
|
|
return std::make_pair(triangleSpec, expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::BlendColor, nxt::BlendFactor::BlendColor, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(BlendStateTest, DstBlendFactorOneMinusBlendColor) {
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
std::vector<std::pair<TriangleSpec, RGBA8>> tests;
|
||
|
|
std::transform(kColors.begin(), kColors.end(), std::back_inserter(tests), [&](const RGBA8& color) {
|
||
|
|
auto triangleSpec = TriangleSpec({ { color }, {{ 0.2f, 0.4f, 0.6f, 0.8f }} });
|
||
|
|
std::array<float, 4> f = { { 0.8f, 0.6f, 0.4f, 0.2f } };
|
||
|
|
RGBA8 expected = color + mix(RGBA8(0, 0, 0, 0), base, f);
|
||
|
|
return std::make_pair(triangleSpec, expected);
|
||
|
|
});
|
||
|
|
CheckDstBlendFactor(base, nxt::BlendFactor::OneMinusBlendColor, nxt::BlendFactor::OneMinusBlendColor, tests);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check that the color write mask works
|
||
|
|
TEST_P(BlendStateTest, ColorWriteMask) {
|
||
|
|
{
|
||
|
|
// Test single channel color write
|
||
|
|
nxt::BlendState blendState = device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetColorWriteMask(nxt::ColorWriteMask::Red)
|
||
|
|
.GetResult();
|
||
|
|
SetupSingleSourcePipelines(blendState);
|
||
|
|
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
for (auto& color : kColors) {
|
||
|
|
RGBA8 expected = base + RGBA8(color.r, 0, 0, 0);
|
||
|
|
DoSingleSourceTest(base, { color }, expected);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
// Test multi channel color write
|
||
|
|
nxt::BlendState blendState = device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetColorWriteMask(nxt::ColorWriteMask::Green | nxt::ColorWriteMask::Alpha)
|
||
|
|
.GetResult();
|
||
|
|
SetupSingleSourcePipelines(blendState);
|
||
|
|
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
for (auto& color : kColors) {
|
||
|
|
RGBA8 expected = base + RGBA8(0, color.g, 0, color.a);
|
||
|
|
DoSingleSourceTest(base, { color }, expected);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
// Test no channel color write
|
||
|
|
nxt::BlendState blendState = device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetColorWriteMask(nxt::ColorWriteMask::None)
|
||
|
|
.GetResult();
|
||
|
|
SetupSingleSourcePipelines(blendState);
|
||
|
|
|
||
|
|
RGBA8 base(32, 64, 128, 192);
|
||
|
|
for (auto& color : kColors) {
|
||
|
|
DoSingleSourceTest(base, { color }, base);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Test that independent blend states on render targets works
|
||
|
|
TEST_P(BlendStateTest, IndependentBlendState) {
|
||
|
|
|
||
|
|
std::array<nxt::Texture, 5> renderTargets;
|
||
|
|
std::array<nxt::TextureView, 5> renderTargetViews;
|
||
|
|
|
||
|
|
for (uint32_t i = 0; i < 5; ++i) {
|
||
|
|
renderTargets[i] = device.CreateTextureBuilder()
|
||
|
|
.SetDimension(nxt::TextureDimension::e2D)
|
||
|
|
.SetExtent(kRTSize, kRTSize, 1)
|
||
|
|
.SetFormat(nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
.SetMipLevels(1)
|
||
|
|
.SetAllowedUsage(nxt::TextureUsageBit::OutputAttachment | nxt::TextureUsageBit::TransferSrc)
|
||
|
|
.SetInitialUsage(nxt::TextureUsageBit::OutputAttachment)
|
||
|
|
.GetResult();
|
||
|
|
renderTargetViews[i] = renderTargets[i].CreateTextureViewBuilder().GetResult();
|
||
|
|
}
|
||
|
|
|
||
|
|
renderpass = device.CreateRenderPassBuilder()
|
||
|
|
.SetAttachmentCount(5)
|
||
|
|
.SetSubpassCount(1)
|
||
|
|
.AttachmentSetFormat(0, nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
.AttachmentSetFormat(1, nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
.AttachmentSetFormat(2, nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
.AttachmentSetFormat(3, nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
.AttachmentSetFormat(4, nxt::TextureFormat::R8G8B8A8Unorm)
|
||
|
|
// Scatter these so we know indexing to the right shader location is working
|
||
|
|
.SubpassSetColorAttachment(0, 0, 2)
|
||
|
|
// We skip attachment index 1 to check the case where the blend states in the pipeline state are not tightly packed
|
||
|
|
.SubpassSetColorAttachment(0, 1, 4)
|
||
|
|
.SubpassSetColorAttachment(0, 2, 3)
|
||
|
|
.SubpassSetColorAttachment(0, 3, 0)
|
||
|
|
.GetResult();
|
||
|
|
|
||
|
|
framebuffer = device.CreateFramebufferBuilder()
|
||
|
|
.SetRenderPass(renderpass)
|
||
|
|
.SetDimensions(kRTSize, kRTSize)
|
||
|
|
.SetAttachment(0, renderTargetViews[0])
|
||
|
|
.SetAttachment(1, renderTargetViews[1])
|
||
|
|
.SetAttachment(2, renderTargetViews[2])
|
||
|
|
.SetAttachment(3, renderTargetViews[3])
|
||
|
|
.SetAttachment(4, renderTargetViews[4])
|
||
|
|
.GetResult();
|
||
|
|
|
||
|
|
nxt::ShaderModule fsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, R"(
|
||
|
|
#version 450
|
||
|
|
layout(set = 0, binding = 0) uniform myBlock {
|
||
|
|
vec4 color0;
|
||
|
|
vec4 color1;
|
||
|
|
vec4 color2;
|
||
|
|
vec4 color3;
|
||
|
|
} myUbo;
|
||
|
|
|
||
|
|
layout(location = 0) out vec4 fragColor0;
|
||
|
|
layout(location = 1) out vec4 fragColor1;
|
||
|
|
layout(location = 2) out vec4 fragColor2;
|
||
|
|
layout(location = 3) out vec4 fragColor3;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
fragColor0 = myUbo.color0;
|
||
|
|
fragColor1 = myUbo.color1;
|
||
|
|
fragColor2 = myUbo.color2;
|
||
|
|
fragColor3 = myUbo.color3;
|
||
|
|
}
|
||
|
|
)");
|
||
|
|
|
||
|
|
std::array<nxt::BlendState, 3> blendStates = { {
|
||
|
|
device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Add, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.GetResult(),
|
||
|
|
device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Subtract, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Subtract, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.GetResult(),
|
||
|
|
device.CreateBlendStateBuilder()
|
||
|
|
.SetBlendEnabled(true)
|
||
|
|
.SetColorBlend(nxt::BlendOperation::Min, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.SetAlphaBlend(nxt::BlendOperation::Min, nxt::BlendFactor::One, nxt::BlendFactor::One)
|
||
|
|
.GetResult(),
|
||
|
|
} };
|
||
|
|
|
||
|
|
basePipeline = device.CreateRenderPipelineBuilder()
|
||
|
|
.SetSubpass(renderpass, 0)
|
||
|
|
.SetLayout(pipelineLayout)
|
||
|
|
.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
|
||
|
|
.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
|
||
|
|
.GetResult();
|
||
|
|
|
||
|
|
testPipeline = device.CreateRenderPipelineBuilder()
|
||
|
|
.SetSubpass(renderpass, 0)
|
||
|
|
.SetLayout(pipelineLayout)
|
||
|
|
.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
|
||
|
|
.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
|
||
|
|
.SetColorAttachmentBlendState(0, blendStates[0])
|
||
|
|
.SetColorAttachmentBlendState(1, blendStates[1])
|
||
|
|
// Blend state not set on third color attachment. It should be default
|
||
|
|
.SetColorAttachmentBlendState(3, blendStates[2])
|
||
|
|
.GetResult();
|
||
|
|
|
||
|
|
|
||
|
|
for (unsigned int c = 0; c < kColors.size(); ++c) {
|
||
|
|
RGBA8 base = kColors[((c + 31) * 29) % kColors.size()];
|
||
|
|
RGBA8 color0 = kColors[((c + 19) * 13) % kColors.size()];
|
||
|
|
RGBA8 color1 = kColors[((c + 11) * 43) % kColors.size()];
|
||
|
|
RGBA8 color2 = kColors[((c + 7) * 3) % kColors.size()];
|
||
|
|
RGBA8 color3 = kColors[((c + 13) * 71) % kColors.size()];
|
||
|
|
|
||
|
|
RGBA8 expected0 = color0 + base;
|
||
|
|
RGBA8 expected1 = color1 - base;
|
||
|
|
RGBA8 expected2 = color2;
|
||
|
|
RGBA8 expected3 = min(color3, base);
|
||
|
|
|
||
|
|
renderTargets[2].TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
|
||
|
|
renderTargets[4].TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
|
||
|
|
renderTargets[3].TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
|
||
|
|
renderTargets[0].TransitionUsage(nxt::TextureUsageBit::OutputAttachment);
|
||
|
|
|
||
|
|
nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
|
||
|
|
.BeginRenderPass(renderpass, framebuffer)
|
||
|
|
.BeginRenderSubpass()
|
||
|
|
.SetRenderPipeline(basePipeline)
|
||
|
|
.SetBindGroup(0, MakeBindGroupForColors(std::array<RGBA8, 4>({ { base, base, base, base } })))
|
||
|
|
.DrawArrays(3, 1, 0, 0)
|
||
|
|
|
||
|
|
.SetRenderPipeline(testPipeline)
|
||
|
|
.SetBindGroup(0, MakeBindGroupForColors(std::array<RGBA8, 4>({ { color0, color1, color2, color3 } })))
|
||
|
|
.DrawArrays(3, 1, 0, 0)
|
||
|
|
.EndRenderSubpass()
|
||
|
|
.EndRenderPass()
|
||
|
|
.GetResult();
|
||
|
|
|
||
|
|
queue.Submit(1, &commands);
|
||
|
|
|
||
|
|
EXPECT_PIXEL_RGBA8_EQ(expected0, renderTargets[2], kRTSize / 2, kRTSize / 2) << "Attachment slot 0 using render target 2 should have been " << color0 << " + " << base << " = " << expected0;
|
||
|
|
EXPECT_PIXEL_RGBA8_EQ(expected1, renderTargets[4], kRTSize / 2, kRTSize / 2) << "Attachment slot 1 using render target 4 should have been " << color1 << " - " << base << " = " << expected1;
|
||
|
|
EXPECT_PIXEL_RGBA8_EQ(expected2, renderTargets[3], kRTSize / 2, kRTSize / 2) << "Attachment slot 2 using render target 3 should have been " << color2 << " = " << expected2 << "(no blending)";
|
||
|
|
EXPECT_PIXEL_RGBA8_EQ(expected3, renderTargets[0], kRTSize / 2, kRTSize / 2) << "Attachment slot 3 using render target 0 should have been min(" << color3 << ", " << base << ") = " << expected3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
NXT_INSTANTIATE_TEST(BlendStateTest, D3D12Backend, MetalBackend, OpenGLBackend)
|