Ryujinx/Ryujinx.Graphics.Gpu/Engine/Threed/DrawManager.cs

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using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.Engine.Types;
using System.Text;
namespace Ryujinx.Graphics.Gpu.Engine.Threed
{
/// <summary>
/// Draw manager.
/// </summary>
class DrawManager
{
private readonly GpuContext _context;
private readonly GpuChannel _channel;
private readonly DeviceStateWithShadow<ThreedClassState> _state;
private readonly DrawState _drawState;
private bool _instancedDrawPending;
private bool _instancedIndexed;
private int _instancedFirstIndex;
private int _instancedFirstVertex;
private int _instancedFirstInstance;
private int _instancedIndexCount;
private int _instancedDrawStateFirst;
private int _instancedDrawStateCount;
private int _instanceIndex;
private const int IndexBufferCountMethodOffset = 0x5f8;
/// <summary>
/// Creates a new instance of the draw manager.
/// </summary>
/// <param name="context">GPU context</param>
/// <param name="channel">GPU channel</param>
/// <param name="state">Channel state</param>
/// <param name="drawState">Draw state</param>
public DrawManager(GpuContext context, GpuChannel channel, DeviceStateWithShadow<ThreedClassState> state, DrawState drawState)
{
_context = context;
_channel = channel;
_state = state;
_drawState = drawState;
}
/// <summary>
/// Pushes four 8-bit index buffer elements.
/// </summary>
/// <param name="argument">Method call argument</param>
public void VbElementU8(int argument)
{
_drawState.IbStreamer.VbElementU8(_context.Renderer, argument);
}
/// <summary>
/// Pushes two 16-bit index buffer elements.
/// </summary>
/// <param name="argument">Method call argument</param>
public void VbElementU16(int argument)
{
_drawState.IbStreamer.VbElementU16(_context.Renderer, argument);
}
/// <summary>
/// Pushes one 32-bit index buffer element.
/// </summary>
/// <param name="argument">Method call argument</param>
public void VbElementU32(int argument)
{
_drawState.IbStreamer.VbElementU32(_context.Renderer, argument);
}
/// <summary>
/// Finishes the draw call.
/// This draws geometry on the bound buffers based on the current GPU state.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void DrawEnd(ThreedClass engine, int argument)
{
DrawEnd(engine, _state.State.IndexBufferState.First, (int)_state.State.IndexBufferCount);
}
/// <summary>
/// Finishes the draw call.
/// This draws geometry on the bound buffers based on the current GPU state.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="firstIndex">Index of the first index buffer element used on the draw</param>
/// <param name="indexCount">Number of index buffer elements used on the draw</param>
private void DrawEnd(ThreedClass engine, int firstIndex, int indexCount)
{
ConditionalRenderEnabled renderEnable = ConditionalRendering.GetRenderEnable(
_context,
_channel.MemoryManager,
_state.State.RenderEnableAddress,
_state.State.RenderEnableCondition);
if (renderEnable == ConditionalRenderEnabled.False || _instancedDrawPending)
{
if (renderEnable == ConditionalRenderEnabled.False)
{
PerformDeferredDraws();
}
_drawState.DrawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
return;
}
_drawState.FirstIndex = firstIndex;
_drawState.IndexCount = indexCount;
engine.UpdateState();
bool instanced = _drawState.VsUsesInstanceId || _drawState.IsAnyVbInstanced;
if (instanced)
{
_instancedDrawPending = true;
_instancedIndexed = _drawState.DrawIndexed;
_instancedFirstIndex = firstIndex;
_instancedFirstVertex = (int)_state.State.FirstVertex;
_instancedFirstInstance = (int)_state.State.FirstInstance;
_instancedIndexCount = indexCount;
var drawState = _state.State.VertexBufferDrawState;
_instancedDrawStateFirst = drawState.First;
_instancedDrawStateCount = drawState.Count;
_drawState.DrawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
return;
}
int firstInstance = (int)_state.State.FirstInstance;
int inlineIndexCount = _drawState.IbStreamer.GetAndResetInlineIndexCount();
if (inlineIndexCount != 0)
{
int firstVertex = (int)_state.State.FirstVertex;
BufferRange br = new BufferRange(_drawState.IbStreamer.GetInlineIndexBuffer(), 0, inlineIndexCount * 4);
_channel.BufferManager.SetIndexBuffer(br, IndexType.UInt);
_context.Renderer.Pipeline.DrawIndexed(inlineIndexCount, 1, firstIndex, firstVertex, firstInstance);
}
else if (_drawState.DrawIndexed)
{
int firstVertex = (int)_state.State.FirstVertex;
_context.Renderer.Pipeline.DrawIndexed(indexCount, 1, firstIndex, firstVertex, firstInstance);
}
else
{
var drawState = _state.State.VertexBufferDrawState;
_context.Renderer.Pipeline.Draw(drawState.Count, 1, drawState.First, firstInstance);
}
_drawState.DrawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
}
/// <summary>
/// Starts draw.
/// This sets primitive type and instanced draw parameters.
/// </summary>
/// <param name="argument">Method call argument</param>
public void DrawBegin(int argument)
{
bool incrementInstance = (argument & (1 << 26)) != 0;
bool resetInstance = (argument & (1 << 27)) == 0;
if (_state.State.PrimitiveTypeOverrideEnable)
{
PrimitiveTypeOverride typeOverride = _state.State.PrimitiveTypeOverride;
DrawBegin(incrementInstance, resetInstance, typeOverride.Convert());
}
else
{
PrimitiveType type = (PrimitiveType)(argument & 0xffff);
DrawBegin(incrementInstance, resetInstance, type.Convert());
}
}
/// <summary>
/// Starts draw.
/// This sets primitive type and instanced draw parameters.
/// </summary>
/// <param name="incrementInstance">Indicates if the current instance should be incremented</param>
/// <param name="resetInstance">Indicates if the current instance should be set to zero</param>
/// <param name="topology">Primitive topology</param>
private void DrawBegin(bool incrementInstance, bool resetInstance, PrimitiveTopology topology)
{
if (incrementInstance)
{
_instanceIndex++;
}
else if (resetInstance)
{
PerformDeferredDraws();
_instanceIndex = 0;
}
_context.Renderer.Pipeline.SetPrimitiveTopology(topology);
_drawState.Topology = topology;
}
/// <summary>
/// Sets the index buffer count.
/// This also sets internal state that indicates that the next draw is an indexed draw.
/// </summary>
/// <param name="argument">Method call argument</param>
public void SetIndexBufferCount(int argument)
{
_drawState.DrawIndexed = true;
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void DrawIndexedSmall(ThreedClass engine, int argument)
{
DrawIndexedSmall(engine, argument, false);
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void DrawIndexedSmall2(ThreedClass engine, int argument)
{
DrawIndexedSmall(engine, argument);
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements,
/// while also pre-incrementing the current instance value.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void DrawIndexedSmallIncInstance(ThreedClass engine, int argument)
{
DrawIndexedSmall(engine, argument, true);
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements,
/// while also pre-incrementing the current instance value.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void DrawIndexedSmallIncInstance2(ThreedClass engine, int argument)
{
DrawIndexedSmallIncInstance(engine, argument);
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements,
/// while optionally also pre-incrementing the current instance value.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
/// <param name="instanced">True to increment the current instance value, false otherwise</param>
private void DrawIndexedSmall(ThreedClass engine, int argument, bool instanced)
{
PrimitiveTypeOverride typeOverride = _state.State.PrimitiveTypeOverride;
DrawBegin(instanced, !instanced, typeOverride.Convert());
int firstIndex = argument & 0xffff;
int indexCount = (argument >> 16) & 0xfff;
bool oldDrawIndexed = _drawState.DrawIndexed;
_drawState.DrawIndexed = true;
DrawEnd(engine, firstIndex, indexCount);
_drawState.DrawIndexed = oldDrawIndexed;
}
/// <summary>
/// Performs a indirect multi-draw, with parameters from a GPU buffer.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="topology">Primitive topology</param>
/// <param name="indirectBuffer">GPU buffer with the draw parameters, such as count, first index, etc</param>
/// <param name="parameterBuffer">GPU buffer with the draw count</param>
/// <param name="maxDrawCount">Maximum number of draws that can be made</param>
/// <param name="stride">Distance in bytes between each element on the <paramref name="indirectBuffer"/> array</param>
public void MultiDrawIndirectCount(
ThreedClass engine,
int indexCount,
PrimitiveTopology topology,
BufferRange indirectBuffer,
BufferRange parameterBuffer,
int maxDrawCount,
int stride)
{
engine.Write(IndexBufferCountMethodOffset * 4, indexCount);
_context.Renderer.Pipeline.SetPrimitiveTopology(topology);
_drawState.Topology = topology;
ConditionalRenderEnabled renderEnable = ConditionalRendering.GetRenderEnable(
_context,
_channel.MemoryManager,
_state.State.RenderEnableAddress,
_state.State.RenderEnableCondition);
if (renderEnable == ConditionalRenderEnabled.False)
{
_drawState.DrawIndexed = false;
return;
}
_drawState.FirstIndex = _state.State.IndexBufferState.First;
_drawState.IndexCount = indexCount;
engine.UpdateState();
if (_drawState.DrawIndexed)
{
_context.Renderer.Pipeline.MultiDrawIndexedIndirectCount(indirectBuffer, parameterBuffer, maxDrawCount, stride);
}
else
{
_context.Renderer.Pipeline.MultiDrawIndirectCount(indirectBuffer, parameterBuffer, maxDrawCount, stride);
}
_drawState.DrawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
}
/// <summary>
/// Perform any deferred draws.
/// This is used for instanced draws.
/// Since each instance is a separate draw, we defer the draw and accumulate the instance count.
/// Once we detect the last instanced draw, then we perform the host instanced draw,
/// with the accumulated instance count.
/// </summary>
public void PerformDeferredDraws()
{
// Perform any pending instanced draw.
if (_instancedDrawPending)
{
_instancedDrawPending = false;
if (_instancedIndexed)
{
_context.Renderer.Pipeline.DrawIndexed(
_instancedIndexCount,
_instanceIndex + 1,
_instancedFirstIndex,
_instancedFirstVertex,
_instancedFirstInstance);
}
else
{
_context.Renderer.Pipeline.Draw(
_instancedDrawStateCount,
_instanceIndex + 1,
_instancedDrawStateFirst,
_instancedFirstInstance);
}
}
}
/// <summary>
/// Clears the current color and depth-stencil buffers.
/// Which buffers should be cleared is also specified on the argument.
/// </summary>
/// <param name="engine">3D engine where this method is being called</param>
/// <param name="argument">Method call argument</param>
public void Clear(ThreedClass engine, int argument)
{
ConditionalRenderEnabled renderEnable = ConditionalRendering.GetRenderEnable(
_context,
_channel.MemoryManager,
_state.State.RenderEnableAddress,
_state.State.RenderEnableCondition);
if (renderEnable == ConditionalRenderEnabled.False)
{
return;
}
// Scissor and rasterizer discard also affect clears.
engine.UpdateState((1UL << StateUpdater.RasterizerStateIndex) | (1UL << StateUpdater.ScissorStateIndex));
int index = (argument >> 6) & 0xf;
engine.UpdateRenderTargetState(useControl: false, singleUse: index);
_channel.TextureManager.UpdateRenderTargets();
bool clearDepth = (argument & 1) != 0;
bool clearStencil = (argument & 2) != 0;
uint componentMask = (uint)((argument >> 2) & 0xf);
if (componentMask != 0)
{
var clearColor = _state.State.ClearColors;
ColorF color = new ColorF(clearColor.Red, clearColor.Green, clearColor.Blue, clearColor.Alpha);
_context.Renderer.Pipeline.ClearRenderTargetColor(index, componentMask, color);
}
if (clearDepth || clearStencil)
{
float depthValue = _state.State.ClearDepthValue;
int stencilValue = (int)_state.State.ClearStencilValue;
int stencilMask = 0;
if (clearStencil)
{
stencilMask = _state.State.StencilTestState.FrontMask;
}
_context.Renderer.Pipeline.ClearRenderTargetDepthStencil(
depthValue,
clearDepth,
stencilValue,
stencilMask);
}
engine.UpdateRenderTargetState(useControl: true);
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
}
}
}