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3D Renderer: inverted depth buffer

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This commit is contained in:
Simon Lübeß
2024-02-16 16:14:14 +01:00
parent 2ab4a7d70b
commit 0321bd91c4
1 changed files with 12 additions and 1 deletions
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GlitchyEngine/src/Renderer/Renderer.bf
+12 -1
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@@ -63,7 +63,8 @@ namespace GlitchyEngine.Renderer
), ),
TargetDescription(.D24_UNorm_S8_UInt, ownDebugName: new String("DepthStencil")){ TargetDescription(.D24_UNorm_S8_UInt, ownDebugName: new String("DepthStencil")){
SamplerDescription = samplerDesc, SamplerDescription = samplerDesc,
ClearColor = .DepthStencil(1.0f, 0) // We use an inverted depth buffer so 0.0 represents the furthest distance
ClearColor = .DepthStencil(0.0f, 0)
}); });
Target = new RenderTargetGroup(targetDesc); Target = new RenderTargetGroup(targetDesc);
// TODO: there needs to be a proper way to do it // TODO: there needs to be a proper way to do it
@@ -101,6 +102,9 @@ namespace GlitchyEngine.Renderer
static BlendState _gBufferBlend; static BlendState _gBufferBlend;
static BlendState _lightBlend; static BlendState _lightBlend;
/// Depth Stencil State used to render objects.
static DepthStencilState _meshDepthStencilState;
/// Depth Stencil State used to render lights and other full screen effects.
static DepthStencilState _fullscreenDepthState; static DepthStencilState _fullscreenDepthState;
static Buffer _sceneBuffer; static Buffer _sceneBuffer;
@@ -195,6 +199,11 @@ namespace GlitchyEngine.Renderer
RenderTargetWriteMask = .All RenderTargetWriteMask = .All
}; };
_lightBlend = new BlendState(lightBlendDesc); _lightBlend = new BlendState(lightBlendDesc);
DepthStencilStateDescription meshDsDesc = .Default;
// We use an inverted depth buffer so greater depth values are closer
meshDsDesc.DepthFunction = .Greater;
_meshDepthStencilState = new DepthStencilState(meshDsDesc);
DepthStencilStateDescription dsDesc = .Default; DepthStencilStateDescription dsDesc = .Default;
dsDesc.DepthEnabled = false; dsDesc.DepthEnabled = false;
@@ -213,6 +222,7 @@ namespace GlitchyEngine.Renderer
_sceneBuffer.ReleaseRef(); _sceneBuffer.ReleaseRef();
_fullscreenDepthState.ReleaseRef(); _fullscreenDepthState.ReleaseRef();
_meshDepthStencilState.ReleaseRef();
_lightBlend.ReleaseRef(); _lightBlend.ReleaseRef();
_gBufferBlend.ReleaseRef(); _gBufferBlend.ReleaseRef();
delete _gBuffer; delete _gBuffer;
@@ -305,6 +315,7 @@ namespace GlitchyEngine.Renderer
RenderCommand.SetViewport(0, 0, _sceneConstants.CameraTarget.Width, _sceneConstants.CameraTarget.Height); RenderCommand.SetViewport(0, 0, _sceneConstants.CameraTarget.Width, _sceneConstants.CameraTarget.Height);
RenderCommand.SetBlendState(_gBufferBlend); RenderCommand.SetBlendState(_gBufferBlend);
RenderCommand.SetDepthStencilState(_meshDepthStencilState);
for (SubmittedMesh entry in _queue) for (SubmittedMesh entry in _queue)
{ {