using Ryujinx.Common.Logging;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.State;
namespace Ryujinx.Graphics.Gpu.Engine
{
partial class Methods
{
///
/// Checks if draws and clears should be performed, according
/// to currently set conditional rendering conditions.
///
/// GPU state
/// True if rendering is enabled, false otherwise
private ConditionalRenderEnabled GetRenderEnable(GpuState state)
{
ConditionState condState = state.Get(MethodOffset.ConditionState);
switch (condState.Condition)
{
case Condition.Always:
return ConditionalRenderEnabled.True;
case Condition.Never:
return ConditionalRenderEnabled.False;
case Condition.ResultNonZero:
return CounterNonZero(condState.Address.Pack());
case Condition.Equal:
return CounterCompare(condState.Address.Pack(), true);
case Condition.NotEqual:
return CounterCompare(condState.Address.Pack(), false);
}
Logger.Warning?.Print(LogClass.Gpu, $"Invalid conditional render condition \"{condState.Condition}\".");
return ConditionalRenderEnabled.True;
}
///
/// Checks if the counter value at a given GPU memory address is non-zero.
///
/// GPU virtual address of the counter value
/// True if the value is not zero, false otherwise. Returns host if handling with host conditional rendering
private ConditionalRenderEnabled CounterNonZero(ulong gpuVa)
{
ICounterEvent evt = _counterCache.FindEvent(gpuVa);
if (evt == null)
{
return ConditionalRenderEnabled.False;
}
if (_context.Renderer.Pipeline.TryHostConditionalRendering(evt, 0L, false))
{
return ConditionalRenderEnabled.Host;
}
else
{
evt.Flush();
return (_context.MemoryManager.Read(gpuVa) != 0) ? ConditionalRenderEnabled.True : ConditionalRenderEnabled.False;
}
}
///
/// Checks if the counter at a given GPU memory address passes a specified equality comparison.
///
/// GPU virtual address
/// True to check if the values are equal, false to check if they are not equal
/// True if the condition is met, false otherwise. Returns host if handling with host conditional rendering
private ConditionalRenderEnabled CounterCompare(ulong gpuVa, bool isEqual)
{
ICounterEvent evt = FindEvent(gpuVa);
ICounterEvent evt2 = FindEvent(gpuVa + 16);
bool useHost;
if (evt != null && evt2 == null)
{
useHost = _context.Renderer.Pipeline.TryHostConditionalRendering(evt, _context.MemoryManager.Read(gpuVa + 16), isEqual);
}
else if (evt == null && evt2 != null)
{
useHost = _context.Renderer.Pipeline.TryHostConditionalRendering(evt2, _context.MemoryManager.Read(gpuVa), isEqual);
}
else if (evt != null && evt2 != null)
{
useHost = _context.Renderer.Pipeline.TryHostConditionalRendering(evt, evt2, isEqual);
}
else
{
useHost = false;
}
if (useHost)
{
return ConditionalRenderEnabled.Host;
}
else
{
evt?.Flush();
evt2?.Flush();
ulong x = _context.MemoryManager.Read(gpuVa);
ulong y = _context.MemoryManager.Read(gpuVa + 16);
return (isEqual ? x == y : x != y) ? ConditionalRenderEnabled.True : ConditionalRenderEnabled.False;
}
}
///
/// Tries to find a counter that is supposed to be written at the specified address,
/// returning the related event.
///
/// GPU virtual address where the counter is supposed to be written
/// The counter event, or null if not present
private ICounterEvent FindEvent(ulong gpuVa)
{
return _counterCache.FindEvent(gpuVa);
}
}
}