| // Copyright 2019 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" |
| |
| constexpr uint32_t kRTSize = 4; |
| |
| class DrawTest : public DawnTest { |
| protected: |
| void SetUp() override { |
| DawnTest::SetUp(); |
| |
| renderPass = utils::CreateBasicRenderPass(device, kRTSize, kRTSize); |
| |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( |
| @vertex |
| fn main(@location(0) pos : vec4<f32>) -> @builtin(position) vec4<f32> { |
| return pos; |
| })"); |
| |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( |
| @fragment fn main() -> @location(0) vec4<f32> { |
| return vec4<f32>(0.0, 1.0, 0.0, 1.0); |
| })"); |
| |
| utils::ComboRenderPipelineDescriptor descriptor; |
| descriptor.vertex.module = vsModule; |
| descriptor.cFragment.module = fsModule; |
| descriptor.primitive.topology = wgpu::PrimitiveTopology::TriangleList; |
| descriptor.vertex.bufferCount = 1; |
| descriptor.cBuffers[0].arrayStride = 4 * sizeof(float); |
| descriptor.cBuffers[0].attributeCount = 1; |
| descriptor.cAttributes[0].format = wgpu::VertexFormat::Float32x4; |
| descriptor.cTargets[0].format = renderPass.colorFormat; |
| |
| pipeline = device.CreateRenderPipeline(&descriptor); |
| |
| vertexBuffer = utils::CreateBufferFromData<float>( |
| device, wgpu::BufferUsage::Vertex, |
| {// The bottom left triangle |
| -1.0f, 1.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, -1.0f, -1.0f, 0.0f, 1.0f, |
| |
| // The top right triangle |
| -1.0f, 1.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f}); |
| } |
| |
| utils::BasicRenderPass renderPass; |
| wgpu::RenderPipeline pipeline; |
| wgpu::Buffer vertexBuffer; |
| |
| void Test(uint32_t vertexCount, |
| uint32_t instanceCount, |
| uint32_t firstIndex, |
| uint32_t firstInstance, |
| utils::RGBA8 bottomLeftExpected, |
| utils::RGBA8 topRightExpected) { |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| { |
| wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo); |
| pass.SetPipeline(pipeline); |
| pass.SetVertexBuffer(0, vertexBuffer); |
| pass.Draw(vertexCount, instanceCount, firstIndex, firstInstance); |
| pass.End(); |
| } |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| EXPECT_PIXEL_RGBA8_EQ(bottomLeftExpected, renderPass.color, 1, 3); |
| EXPECT_PIXEL_RGBA8_EQ(topRightExpected, renderPass.color, 3, 1); |
| } |
| }; |
| |
| // The basic triangle draw. |
| TEST_P(DrawTest, Uint32) { |
| utils::RGBA8 filled(0, 255, 0, 255); |
| utils::RGBA8 notFilled(0, 0, 0, 0); |
| |
| // Test a draw with no indices. |
| Test(0, 0, 0, 0, notFilled, notFilled); |
| // Test a draw with only the first 3 indices (bottom left triangle) |
| Test(3, 1, 0, 0, filled, notFilled); |
| // Test a draw with only the last 3 indices (top right triangle) |
| Test(3, 1, 3, 0, notFilled, filled); |
| // Test a draw with all 6 indices (both triangles). |
| Test(6, 1, 0, 0, filled, filled); |
| } |
| |
| DAWN_INSTANTIATE_TEST(DrawTest, |
| D3D12Backend(), |
| MetalBackend(), |
| OpenGLBackend(), |
| OpenGLESBackend(), |
| VulkanBackend()); |