1 // Copyright 2020 The Dawn Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "tests/DawnTest.h"
16
17 #include "common/Assert.h"
18 #include "utils/ComboRenderPipelineDescriptor.h"
19 #include "utils/WGPUHelpers.h"
20
21 // Test that rendering to a subresource of a texture works.
22 class SubresourceRenderAttachmentTest : public DawnTest {
23 constexpr static uint32_t kRTSize = 2;
24
25 protected:
26 enum class Type { Color, Depth, Stencil };
27
DoSingleTest(Type type,wgpu::TextureFormat format,wgpu::Texture renderTarget,uint32_t textureSize,uint32_t baseArrayLayer,uint32_t baseMipLevel)28 void DoSingleTest(Type type,
29 wgpu::TextureFormat format,
30 wgpu::Texture renderTarget,
31 uint32_t textureSize,
32 uint32_t baseArrayLayer,
33 uint32_t baseMipLevel) {
34 wgpu::TextureViewDescriptor renderTargetViewDesc;
35 renderTargetViewDesc.baseArrayLayer = baseArrayLayer;
36 renderTargetViewDesc.arrayLayerCount = 1;
37 renderTargetViewDesc.baseMipLevel = baseMipLevel;
38 renderTargetViewDesc.mipLevelCount = 1;
39 wgpu::TextureView renderTargetView = renderTarget.CreateView(&renderTargetViewDesc);
40
41 RGBA8 expectedColor(0, 255, 0, 255);
42 float expectedDepth = 0.3f;
43 uint8_t expectedStencil = 7;
44
45 utils::ComboRenderPassDescriptor renderPass = [&]() {
46 switch (type) {
47 case Type::Color: {
48 utils::ComboRenderPassDescriptor renderPass({renderTargetView});
49 renderPass.cColorAttachments[0].clearColor = {
50 static_cast<float>(expectedColor.r) / 255.f,
51 static_cast<float>(expectedColor.g) / 255.f,
52 static_cast<float>(expectedColor.b) / 255.f,
53 static_cast<float>(expectedColor.a) / 255.f,
54 };
55 return renderPass;
56 }
57 case Type::Depth: {
58 utils::ComboRenderPassDescriptor renderPass({}, renderTargetView);
59 renderPass.cDepthStencilAttachmentInfo.clearDepth = expectedDepth;
60 return renderPass;
61 }
62 case Type::Stencil: {
63 utils::ComboRenderPassDescriptor renderPass({}, renderTargetView);
64 renderPass.cDepthStencilAttachmentInfo.clearStencil = expectedStencil;
65 return renderPass;
66 }
67 default:
68 UNREACHABLE();
69 }
70 }();
71
72 wgpu::CommandEncoder commandEncoder = device.CreateCommandEncoder();
73 wgpu::RenderPassEncoder passEncoder = commandEncoder.BeginRenderPass(&renderPass);
74 passEncoder.EndPass();
75 wgpu::CommandBuffer commands = commandEncoder.Finish();
76 queue.Submit(1, &commands);
77
78 const uint32_t renderTargetSize = textureSize >> baseMipLevel;
79 switch (type) {
80 case Type::Color: {
81 std::vector<RGBA8> expected(renderTargetSize * renderTargetSize, expectedColor);
82 EXPECT_TEXTURE_EQ(expected.data(), renderTarget, {0, 0, baseArrayLayer},
83 {renderTargetSize, renderTargetSize}, baseMipLevel);
84 break;
85 }
86 case Type::Depth: {
87 std::vector<float> expected(renderTargetSize * renderTargetSize, expectedDepth);
88 EXPECT_TEXTURE_EQ(expected.data(), renderTarget, {0, 0, baseArrayLayer},
89 {renderTargetSize, renderTargetSize}, baseMipLevel);
90 break;
91 }
92 case Type::Stencil: {
93 std::vector<uint8_t> expected(renderTargetSize * renderTargetSize, expectedStencil);
94 EXPECT_TEXTURE_EQ(expected.data(), renderTarget, {0, 0, baseArrayLayer},
95 {renderTargetSize, renderTargetSize}, baseMipLevel,
96 wgpu::TextureAspect::StencilOnly);
97 break;
98 }
99 }
100 }
101
DoTest(Type type)102 void DoTest(Type type) {
103 constexpr uint32_t kArrayLayerCount = 5;
104 constexpr uint32_t kMipLevelCount = 4;
105
106 wgpu::TextureFormat format;
107 switch (type) {
108 case Type::Color:
109 format = wgpu::TextureFormat::RGBA8Unorm;
110 break;
111 case Type::Depth:
112 format = wgpu::TextureFormat::Depth32Float;
113 break;
114 case Type::Stencil:
115 format = wgpu::TextureFormat::Depth24PlusStencil8;
116 break;
117 default:
118 UNREACHABLE();
119 }
120
121 constexpr uint32_t kTextureSize = kRTSize << (kMipLevelCount - 1);
122
123 wgpu::TextureDescriptor renderTargetDesc;
124 renderTargetDesc.dimension = wgpu::TextureDimension::e2D;
125 renderTargetDesc.size.width = kTextureSize;
126 renderTargetDesc.size.height = kTextureSize;
127 renderTargetDesc.size.depthOrArrayLayers = kArrayLayerCount;
128 renderTargetDesc.sampleCount = 1;
129 renderTargetDesc.format = format;
130 renderTargetDesc.mipLevelCount = kMipLevelCount;
131 renderTargetDesc.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
132
133 wgpu::Texture renderTarget = device.CreateTexture(&renderTargetDesc);
134
135 // Test rendering into the first, middle, and last of each of array layer and mip level.
136 for (uint32_t arrayLayer : {0u, kArrayLayerCount / 2, kArrayLayerCount - 1u}) {
137 for (uint32_t mipLevel : {0u, kMipLevelCount / 2, kMipLevelCount - 1u}) {
138 DoSingleTest(type, format, renderTarget, kTextureSize, arrayLayer, mipLevel);
139 }
140 }
141 }
142 };
143
144 // Test rendering into a subresource of a color texture
TEST_P(SubresourceRenderAttachmentTest,ColorTexture)145 TEST_P(SubresourceRenderAttachmentTest, ColorTexture) {
146 DoTest(Type::Color);
147 }
148
149 // Test rendering into a subresource of a depth texture
TEST_P(SubresourceRenderAttachmentTest,DepthTexture)150 TEST_P(SubresourceRenderAttachmentTest, DepthTexture) {
151 DoTest(Type::Depth);
152 }
153
154 // Test rendering into a subresource of a stencil texture
TEST_P(SubresourceRenderAttachmentTest,StencilTexture)155 TEST_P(SubresourceRenderAttachmentTest, StencilTexture) {
156 // TODO(crbug.com/dawn/667): Work around the fact that some platforms are unable to read
157 // stencil.
158 DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("disable_depth_stencil_read"));
159
160 // TODO(crbug.com/dawn/704): Readback after clear via stencil copy does not work
161 // on some Intel drivers.
162 DAWN_SUPPRESS_TEST_IF(IsMetal() && IsIntel());
163
164 DoTest(Type::Stencil);
165 }
166
167 DAWN_INSTANTIATE_TEST(SubresourceRenderAttachmentTest,
168 D3D12Backend(),
169 D3D12Backend({}, {"use_d3d12_render_pass"}),
170 MetalBackend(),
171 OpenGLBackend(),
172 OpenGLESBackend(),
173 VulkanBackend());
174