| // Copyright 2018 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" |
| |
| namespace dawn { |
| namespace { |
| |
| constexpr uint32_t kRTSize = 4; |
| |
| class DrawIndexedTest : 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 : vec4f) -> @builtin(position) vec4f { |
| return pos; |
| })"); |
| |
| 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::TriangleStrip; |
| descriptor.primitive.stripIndexFormat = wgpu::IndexFormat::Uint32; |
| 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, |
| {// First quad: the first 3 vertices represent 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, 1.0f, 1.0f, |
| 0.0f, 1.0f, |
| |
| // Second quad: the first 3 vertices represent 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, -1.0f, -1.0f, |
| 0.0f, 1.0f}); |
| indexBuffer = utils::CreateBufferFromData<uint32_t>( |
| device, wgpu::BufferUsage::Index, |
| {0, 1, 2, 0, 3, 1, |
| // The indices below are added to test negatve baseVertex |
| 0 + 4, 1 + 4, 2 + 4, 0 + 4, 3 + 4, 1 + 4}); |
| zeroSizedIndexBuffer = |
| utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::Index, {}); |
| } |
| |
| utils::BasicRenderPass renderPass; |
| wgpu::RenderPipeline pipeline; |
| wgpu::Buffer vertexBuffer; |
| wgpu::Buffer indexBuffer; |
| wgpu::Buffer zeroSizedIndexBuffer; |
| |
| void Test(uint32_t indexCount, |
| uint32_t instanceCount, |
| uint32_t firstIndex, |
| int32_t baseVertex, |
| uint32_t firstInstance, |
| uint64_t bufferOffset, |
| utils::RGBA8 bottomLeftExpected, |
| utils::RGBA8 topRightExpected) { |
| // Regular draw with a reasonable index buffer |
| TestImplementation(indexCount, instanceCount, firstIndex, baseVertex, firstInstance, |
| bufferOffset, indexBuffer, bottomLeftExpected, topRightExpected); |
| } |
| |
| void TestZeroSizedIndexBufferDraw(uint32_t indexCount, |
| uint32_t firstIndex, |
| utils::RGBA8 bottomLeftExpected, |
| utils::RGBA8 topRightExpected) { |
| TestImplementation(indexCount, 1, firstIndex, 0, 0, 0, zeroSizedIndexBuffer, |
| bottomLeftExpected, topRightExpected); |
| } |
| |
| void TestImplementation(uint32_t indexCount, |
| uint32_t instanceCount, |
| uint32_t firstIndex, |
| int32_t baseVertex, |
| uint32_t firstInstance, |
| uint64_t bufferOffset, |
| const wgpu::Buffer& curIndexBuffer, |
| 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.SetIndexBuffer(curIndexBuffer, wgpu::IndexFormat::Uint32, bufferOffset); |
| pass.DrawIndexed(indexCount, instanceCount, firstIndex, baseVertex, 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 most basic DrawIndexed triangle draw. |
| TEST_P(DrawIndexedTest, 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, 0, 0, notFilled, notFilled); |
| // Test a draw with only the first 3 indices of the first quad (bottom left triangle) |
| Test(3, 1, 0, 0, 0, 0, filled, notFilled); |
| // Test a draw with only the last 3 indices of the first quad (top right triangle) |
| Test(3, 1, 3, 0, 0, 0, notFilled, filled); |
| // Test a draw with all 6 indices (both triangles). |
| Test(6, 1, 0, 0, 0, 0, filled, filled); |
| } |
| |
| // Test the parameter 'baseVertex' of DrawIndexed() works. |
| TEST_P(DrawIndexedTest, BaseVertex) { |
| DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("disable_base_vertex")); |
| utils::RGBA8 filled(0, 255, 0, 255); |
| utils::RGBA8 notFilled(0, 0, 0, 0); |
| |
| // Test a draw with only the first 3 indices of the second quad (top right triangle) |
| Test(3, 1, 0, 4, 0, 0, notFilled, filled); |
| // Test a draw with only the last 3 indices of the second quad (bottom left triangle) |
| Test(3, 1, 3, 4, 0, 0, filled, notFilled); |
| |
| // Test negative baseVertex |
| // Test a draw with only the first 3 indices of the first quad (bottom left triangle) |
| Test(3, 1, 0, -4, 0, 6 * sizeof(uint32_t), filled, notFilled); |
| // Test a draw with only the last 3 indices of the first quad (top right triangle) |
| Test(3, 1, 3, -4, 0, 6 * sizeof(uint32_t), notFilled, filled); |
| } |
| |
| DAWN_INSTANTIATE_TEST(DrawIndexedTest, |
| D3D11Backend(), |
| D3D12Backend(), |
| MetalBackend(), |
| OpenGLBackend(), |
| OpenGLESBackend(), |
| VulkanBackend()); |
| |
| } // anonymous namespace |
| } // namespace dawn |