/// <summary>
/// Creates a new instance of the shader specialization state.
/// </summary>
/// <param name="state">Current 3D engine state</param>
/// <param name="pipelineState">Current program pipeline state</param>
/// <param name="descriptors">Optional transform feedback buffers in use, if any</param>
public ShaderSpecializationState(
ref GpuChannelGraphicsState state,
ProgramPipelineState?pipelineState,
TransformFeedbackDescriptor[] descriptors) : this(ref state, descriptors)
{
PipelineState = pipelineState;
}
/// <summary>
/// Creates a new instance of the shader specialization state.
/// </summary>
/// <param name="state">Current 3D engine state</param>
/// <param name="descriptors">Optional transform feedback buffers in use, if any</param>
public ShaderSpecializationState(GpuChannelGraphicsState state, TransformFeedbackDescriptor[] descriptors) : this()
{
GraphicsState = state;
_compute = false;
if (descriptors != null)
{
TransformFeedbackDescriptors = descriptors;
_queriedState |= QueriedStateFlags.TransformFeedback;
}
}
/// <summary>
/// Tries to find an existing 3D program on the cache.
/// </summary>
/// <param name="channel">GPU channel</param>
/// <param name="poolState">Texture pool state</param>
/// <param name="graphicsState">Graphics state</param>
/// <param name="program">Cached program, if found</param>
/// <returns>True if a compatible program is found, false otherwise</returns>
public bool TryFindForGraphics(
GpuChannel channel,
GpuChannelPoolState poolState,
GpuChannelGraphicsState graphicsState,
out CachedShaderProgram program)
{
foreach (var entry in _entries)
{
if (entry.SpecializationState.MatchesGraphics(channel, poolState, graphicsState, true))
{
program = entry;
return(true);
}
}
program = default;
return(false);
}
/// <summary>
/// Checks if the recorded state matches the current GPU 3D engine state.
/// </summary>
/// <param name="channel">GPU channel</param>
/// <param name="poolState">Texture pool state</param>
/// <param name="graphicsState">Graphics state</param>
/// <param name="checkTextures">Indicates whether texture descriptors should be checked</param>
/// <returns>True if the state matches, false otherwise</returns>
public bool MatchesGraphics(GpuChannel channel, GpuChannelPoolState poolState, GpuChannelGraphicsState graphicsState, bool checkTextures)
{
if (graphicsState.ViewportTransformDisable != GraphicsState.ViewportTransformDisable)
{
return(false);
}
bool thisA2cDitherEnable = GraphicsState.AlphaToCoverageEnable && GraphicsState.AlphaToCoverageDitherEnable;
bool otherA2cDitherEnable = graphicsState.AlphaToCoverageEnable && graphicsState.AlphaToCoverageDitherEnable;
if (otherA2cDitherEnable != thisA2cDitherEnable)
{
return(false);
}
return(Matches(channel, poolState, checkTextures, isCompute: false));
}
/// <summary>
/// Checks if the recorded state matches the current GPU 3D engine state.
/// </summary>
/// <param name="channel">GPU channel</param>
/// <param name="poolState">Texture pool state</param>
/// <param name="graphicsState">Graphics state</param>
/// <param name="checkTextures">Indicates whether texture descriptors should be checked</param>
/// <returns>True if the state matches, false otherwise</returns>
public bool MatchesGraphics(GpuChannel channel, GpuChannelPoolState poolState, GpuChannelGraphicsState graphicsState, bool checkTextures)
{
if (graphicsState.ViewportTransformDisable != GraphicsState.ViewportTransformDisable)
{
return(false);
}
bool thisA2cDitherEnable = GraphicsState.AlphaToCoverageEnable && GraphicsState.AlphaToCoverageDitherEnable;
bool otherA2cDitherEnable = graphicsState.AlphaToCoverageEnable && graphicsState.AlphaToCoverageDitherEnable;
if (otherA2cDitherEnable != thisA2cDitherEnable)
{
return(false);
}
if (graphicsState.DepthMode != GraphicsState.DepthMode)
{
return(false);
}
if (graphicsState.AlphaTestEnable != GraphicsState.AlphaTestEnable)
{
return(false);
}
if (graphicsState.AlphaTestEnable &&
(graphicsState.AlphaTestCompare != GraphicsState.AlphaTestCompare ||
graphicsState.AlphaTestReference != GraphicsState.AlphaTestReference))
{
return(false);
}
if (!graphicsState.AttributeTypes.AsSpan().SequenceEqual(GraphicsState.AttributeTypes.AsSpan()))
{
return(false);
}
return(Matches(channel, poolState, checkTextures, isCompute: false));
}
