| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn/tests/DawnTest.h" |
| |
| #include "dawn/utils/ComboRenderPipelineDescriptor.h" |
| #include "dawn/utils/WGPUHelpers.h" |
| |
| class ViewportOrientationTests : public DawnTest {}; |
| |
| // Test that the pixel in viewport coordinate (-1, -1) matches texel (0, 0) |
| TEST_P(ViewportOrientationTests, OriginAt0x0) { |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 2, 2); |
| |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( |
| @vertex fn main() -> @builtin(position) vec4f { |
| return vec4f(-0.5, 0.5, 0.0, 1.0); |
| })"); |
| |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( |
| @fragment fn main() -> @location(0) vec4f { |
| return vec4f(0.0, 1.0, 0.0, 1.0); |
| })"); |
| |
| utils::ComboRenderPipelineDescriptor descriptor; |
| descriptor.vertex.module = vsModule; |
| descriptor.cFragment.module = fsModule; |
| descriptor.primitive.topology = wgpu::PrimitiveTopology::PointList; |
| descriptor.cTargets[0].format = renderPass.colorFormat; |
| |
| wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&descriptor); |
| |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| { |
| wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo); |
| pass.SetPipeline(pipeline); |
| pass.Draw(1); |
| pass.End(); |
| } |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8::kGreen, renderPass.color, 0, 0); |
| EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8::kZero, renderPass.color, 0, 1); |
| EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8::kZero, renderPass.color, 1, 0); |
| EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8::kZero, renderPass.color, 1, 1); |
| } |
| |
| DAWN_INSTANTIATE_TEST(ViewportOrientationTests, |
| D3D12Backend(), |
| MetalBackend(), |
| OpenGLBackend(), |
| OpenGLESBackend(), |
| VulkanBackend()); |