public unsafe void InsertBarrier(CommandBuffer commandBuffer, bool isWrite)
{
// If the last access is write, we always need a barrier to be sure we will read or modify
// the correct data.
// If the last access is read, and current one is a write, we need to wait until the
// read finishes to avoid overwriting data still in use.
// Otherwise, if the last access is a read and the current one too, we don't need barriers.
bool needsBarrier = isWrite || _lastAccessIsWrite;
_lastAccessIsWrite = isWrite;
if (needsBarrier)
{
MemoryBarrier memoryBarrier = new MemoryBarrier()
{
SType = StructureType.MemoryBarrier,
SrcAccessMask = DefaultAccessFlags,
DstAccessMask = DefaultAccessFlags
};
_gd.Api.CmdPipelineBarrier(
commandBuffer,
PipelineStageFlags.PipelineStageAllCommandsBit,
PipelineStageFlags.PipelineStageAllCommandsBit,
DependencyFlags.DependencyDeviceGroupBit,
1,
memoryBarrier,
0,
null,
0,
null);
}
}
/// <summary>
/// Insert this barrier if you want to sample from a output that was rendered before this
/// barrier. NOTE: Assumes you only want to sample the output in a fragment stage atm
/// </summary>
internal static void InsertOutputReadBarrier(CommandBuffer commandbuffer)
{
MemoryBarrier barrier = new MemoryBarrier(
srcAccessMask: Accesses.ColorAttachmentWrite | Accesses.DepthStencilAttachmentWrite,
dstAccessMask: Accesses.ShaderRead | Accesses.UniformRead);
commandbuffer.CmdPipelineBarrier(
srcStageMask: PipelineStages.ColorAttachmentOutput | PipelineStages.LateFragmentTests,
dstStageMask: PipelineStages.FragmentShader,
memoryBarriers: new [] { barrier });
}
/// <summary cref="IBackendCodeGenerator.GenerateCode(MemoryBarrier)"/>
public void GenerateCode(MemoryBarrier barrier)
{
var fenceFlags = CLInstructions.GetMemoryFenceFlags(true);
var command = CLInstructions.GetMemoryBarrier(
barrier.Kind,
out string memoryScope);
using var statement = BeginStatement(command);
statement.BeginArguments();
statement.AppendArgument();
statement.AppendCommand(fenceFlags);
statement.AppendArgument();
statement.AppendCommand(memoryScope);
statement.EndArguments();
}
public unsafe void Barrier()
{
MemoryBarrier memoryBarrier = new MemoryBarrier()
{
SType = StructureType.MemoryBarrier,
SrcAccessMask = AccessFlags.AccessMemoryReadBit | AccessFlags.AccessMemoryWriteBit,
DstAccessMask = AccessFlags.AccessMemoryReadBit | AccessFlags.AccessMemoryWriteBit
};
Gd.Api.CmdPipelineBarrier(
CommandBuffer,
PipelineStageFlags.PipelineStageFragmentShaderBit,
PipelineStageFlags.PipelineStageFragmentShaderBit,
0,
1,
memoryBarrier,
0,
null,
0,
null);
}
private static void Load_VERSION_4_2()
{
DrawArraysInstancedBaseInstance = GetAddress <DrawArraysInstancedBaseInstance>("glDrawArraysInstancedBaseInstance");
_DrawElementsInstancedBaseInstance = GetAddress <DrawElementsInstancedBaseInstance>("glDrawElementsInstancedBaseInstance");
_DrawElementsInstancedBaseVertexBaseInstance = GetAddress <DrawElementsInstancedBaseVertexBaseInstance>("glDrawElementsInstancedBaseVertexBaseInstance");
GetInternalformati = GetAddress <GetInternalformati>("glGetInternalformativ");
GetInternalformativ = GetAddress <GetInternalformativ>("glGetInternalformativ");
GetActiveAtomicCounterBufferi = GetAddress <GetActiveAtomicCounterBufferi>("glGetActiveAtomicCounterBufferiv");
GetActiveAtomicCounterBufferiv = GetAddress <GetActiveAtomicCounterBufferiv>("glGetActiveAtomicCounterBufferiv");
BindImageTexture = GetAddress <BindImageTexture>("glBindImageTexture");
MemoryBarrier = GetAddress <MemoryBarrier>("glMemoryBarrier");
TexStorage1D = GetAddress <TexStorage1D>("glTexStorage1D");
TexStorage2D = GetAddress <TexStorage2D>("glTexStorage2D");
TexStorage3D = GetAddress <TexStorage3D>("glTexStorage3D");
DrawTransformFeedbackInstanced = GetAddress <DrawTransformFeedbackInstanced>("glDrawTransformFeedbackInstanced");
DrawTransformFeedbackStreamInstanced = GetAddress <DrawTransformFeedbackStreamInstanced>("glDrawTransformFeedbackStreamInstanced");
VERSION_4_2 = VERSION_4_1 && DrawArraysInstancedBaseInstance != null && _DrawElementsInstancedBaseInstance != null &&
_DrawElementsInstancedBaseVertexBaseInstance != null && GetInternalformati != null && GetInternalformativ != null &&
GetActiveAtomicCounterBufferi != null && GetActiveAtomicCounterBufferiv != null && BindImageTexture != null &&
MemoryBarrier != null && TexStorage1D != null && TexStorage2D != null && TexStorage3D != null &&
DrawTransformFeedbackInstanced != null && DrawTransformFeedbackStreamInstanced != null;
}
public void Visit(MemoryBarrier barrier)
{
}
/// <summary cref="IValueVisitor.Visit(MemoryBarrier)"/> public void Visit(MemoryBarrier barrier) => CodeGenerator.GenerateCode(barrier);
/// <summary cref="IValueVisitor.Visit(MemoryBarrier)"/>
public void Visit(MemoryBarrier barrier)
{
var command = PTXInstructions.GetMemoryBarrier(barrier.Kind);
Command(command);
}
/// <summary cref="IBackendCodeGenerator.GenerateCode(MemoryBarrier)"/>
public void GenerateCode(MemoryBarrier barrier)
{
var command = PTXInstructions.GetMemoryBarrier(barrier.Kind);
Command(command);
}
public void CmdPipelineBarrier(PipelineStageFlags srcStageMask, PipelineStageFlags dstStageMask, DependencyFlags dependencyFlag, MemoryBarrier pMemoryBarrier, BufferMemoryBarrier pBufferMemoryBarrier, ImageMemoryBarrier pImageMemoryBarrier)
{
unsafe {
Interop.NativeMethods.vkCmdPipelineBarrier(this.m, srcStageMask, dstStageMask, dependencyFlag, (UInt32)(pMemoryBarrier != null ? 1 : 0), pMemoryBarrier != null ? pMemoryBarrier.m : (Interop.MemoryBarrier *) default(IntPtr), (UInt32)(pBufferMemoryBarrier != null ? 1 : 0), pBufferMemoryBarrier != null ? pBufferMemoryBarrier.m : (Interop.BufferMemoryBarrier *) default(IntPtr), (UInt32)(pImageMemoryBarrier != null ? 1 : 0), pImageMemoryBarrier != null ? pImageMemoryBarrier.m : (Interop.ImageMemoryBarrier *) default(IntPtr));
}
}
public void CmdWaitEvent(Event pEvent, PipelineStageFlags srcStageMask, PipelineStageFlags dstStageMask, MemoryBarrier pMemoryBarrier, BufferMemoryBarrier pBufferMemoryBarrier, ImageMemoryBarrier pImageMemoryBarrier)
{
unsafe
{
fixed(UInt64 *ptrpEvent = &pEvent.m)
{
Interop.NativeMethods.vkCmdWaitEvents(this.m, (UInt32)(pEvent != null ? 1 : 0), ptrpEvent, srcStageMask, dstStageMask, (UInt32)(pMemoryBarrier != null ? 1 : 0), pMemoryBarrier != null ? pMemoryBarrier.m : (Interop.MemoryBarrier *) default(IntPtr), (UInt32)(pBufferMemoryBarrier != null ? 1 : 0), pBufferMemoryBarrier != null ? pBufferMemoryBarrier.m : (Interop.BufferMemoryBarrier *) default(IntPtr), (UInt32)(pImageMemoryBarrier != null ? 1 : 0), pImageMemoryBarrier != null ? pImageMemoryBarrier.m : (Interop.ImageMemoryBarrier *) default(IntPtr));
}
}
}
internal static unsafe extern void vkCmdWaitEvents(CommandBuffer commandBuffer, uint eventCount, Event* events, PipelineStageFlags sourceStageMask, PipelineStageFlags destinationStageMask, uint memoryBarrierCount, MemoryBarrier* memoryBarriers, uint bufferMemoryBarrierCount, BufferMemoryBarrier* bufferMemoryBarriers, uint imageMemoryBarrierCount, ImageMemoryBarrier* imageMemoryBarriers);
internal static unsafe extern void vkCmdPipelineBarrier(CommandBuffer commandBuffer, PipelineStageFlags sourceStageMask, PipelineStageFlags destinationStageMask, DependencyFlags dependencyFlags, uint memoryBarrierCount, MemoryBarrier* memoryBarriers, uint bufferMemoryBarrierCount, BufferMemoryBarrier* bufferMemoryBarriers, uint imageMemoryBarrierCount, ImageMemoryBarrier* imageMemoryBarriers);
public unsafe void WaitEvents(uint eventCount, Event events, PipelineStageFlags sourceStageMask, PipelineStageFlags destinationStageMask, uint memoryBarrierCount, MemoryBarrier* memoryBarriers, uint bufferMemoryBarrierCount, BufferMemoryBarrier* bufferMemoryBarriers, uint imageMemoryBarrierCount, ImageMemoryBarrier* imageMemoryBarriers)
{
vkCmdWaitEvents(this, eventCount, &events, sourceStageMask, destinationStageMask, memoryBarrierCount, memoryBarriers, bufferMemoryBarrierCount, bufferMemoryBarriers, imageMemoryBarrierCount, imageMemoryBarriers);
}
public unsafe void PipelineBarrier(PipelineStageFlags sourceStageMask, PipelineStageFlags destinationStageMask, DependencyFlags dependencyFlags, uint memoryBarrierCount, MemoryBarrier* memoryBarriers, uint bufferMemoryBarrierCount, BufferMemoryBarrier* bufferMemoryBarriers, uint imageMemoryBarrierCount, ImageMemoryBarrier* imageMemoryBarriers)
{
vkCmdPipelineBarrier(this, sourceStageMask, destinationStageMask, dependencyFlags, memoryBarrierCount, memoryBarriers, bufferMemoryBarrierCount, bufferMemoryBarriers, imageMemoryBarrierCount, imageMemoryBarriers);
}
public void MemoryBarrier(MemoryBarrier barriers)
{
_glMemoryBarrier(barriers);
CheckForError();
}
