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Refactor DepthStencilState. TODO: add validation tests

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- defaults to depth and stencil tests off
- whether or not depth and stencil tests are enabled is inferred from the comparison functions and stencil operations
- only one stencil reference. D3D12 does not support separate references
- change SetDepthWriteMode to SetDepthWriteEnabled and use a bool instead of enum
- Create PersistentPipelineState class for OpenGL backend with simple state tracking
- Add validation so DepthStencilState properties are only set once
- Update API usage in HelloDepthStencil
- refactor tracking of the DepthStencilState in the Metal backend
- validate that compute pipeline does not have a depth stencil state
This commit is contained in:
Austin Eng
2017-06-01 11:30:03 -04:00
committed by Corentin Wallez
parent f51be34864
commit 1063439d5d
20 changed files with 451 additions and 257 deletions
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26
examples/HelloDepthStencil.cpp
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@@ -176,7 +176,6 @@ void init() {
.SetAttribute(0, 0, nxt::VertexFormat::FloatR32G32B32, 0)
.SetAttribute(1, 0, nxt::VertexFormat::FloatR32G32B32, 3 * sizeof(float))
.SetInput(0, 6 * sizeof(float), nxt::InputStepMode::Vertex)
.SetInput(1, 6 * sizeof(float), nxt::InputStepMode::Vertex)
.GetResult();
nxt::BindGroupLayout bgl = device.CreateBindGroupLayoutBuilder()
@@ -243,8 +242,8 @@ void init() {
CreateDefaultRenderPass(device, &renderpass, &framebuffer);
auto depthStencilState = device.CreateDepthStencilStateBuilder()
.SetDepthEnabled(true)
.SetStencilEnabled(false)
.SetDepthCompareFunction(nxt::CompareFunction::Less)
.SetDepthWriteEnabled(true)
.GetResult();
pipeline = device.CreatePipelineBuilder()
@@ -257,12 +256,9 @@ void init() {
.GetResult();
auto planeStencilState = device.CreateDepthStencilStateBuilder()
.SetDepthEnabled(true)
.SetDepthWrite(nxt::DepthWriteMode::Disabled)
.SetStencilEnabled(true)
.SetStencilCompareFunction(nxt::Face::Both, nxt::CompareFunction::Always)
.SetStencilOperation(nxt::Face::Both, nxt::StencilOperation::Keep, nxt::StencilOperation::Keep, nxt::StencilOperation::Replace)
.SetStencilMask(nxt::Face::Both, 0xff, 0xff)
.SetDepthCompareFunction(nxt::CompareFunction::Less)
.SetDepthWriteEnabled(false)
.SetStencilFunction(nxt::Face::Both, nxt::CompareFunction::Always, nxt::StencilOperation::Keep, nxt::StencilOperation::Keep, nxt::StencilOperation::Replace)
.GetResult();
planePipeline = device.CreatePipelineBuilder()
@@ -275,12 +271,9 @@ void init() {
.GetResult();
auto reflectionStencilState = device.CreateDepthStencilStateBuilder()
.SetDepthEnabled(true)
.SetDepthWrite(nxt::DepthWriteMode::Enabled)
.SetStencilEnabled(true)
.SetStencilCompareFunction(nxt::Face::Both, nxt::CompareFunction::Equal)
.SetStencilOperation(nxt::Face::Both, nxt::StencilOperation::Keep, nxt::StencilOperation::Keep, nxt::StencilOperation::Replace)
.SetStencilMask(nxt::Face::Both, 0xff, 0x00)
.SetDepthCompareFunction(nxt::CompareFunction::Less)
.SetDepthWriteEnabled(true)
.SetStencilFunction(nxt::Face::Both, nxt::CompareFunction::Equal, nxt::StencilOperation::Keep, nxt::StencilOperation::Keep, nxt::StencilOperation::Replace)
.GetResult();
reflectionPipeline = device.CreatePipelineBuilder()
@@ -320,13 +313,12 @@ void frame() {
.SetIndexBuffer(indexBuffer, 0, nxt::IndexFormat::Uint32)
.DrawElements(36, 1, 0, 0)
.SetStencilReference(0x1)
.SetPipeline(planePipeline)
.SetStencilReference(0x1, 0x1)
.SetVertexBuffers(0, 1, &planeBuffer, vertexBufferOffsets)
.DrawElements(6, 1, 0, 0)
.SetPipeline(reflectionPipeline)
.SetStencilReference(0x1, 0x1)
.SetVertexBuffers(0, 1, &vertexBuffer, vertexBufferOffsets)
.SetBindGroup(0, bindGroup[1])
.DrawElements(36, 1, 0, 0)