Ryujinx/Ryujinx.Graphics.Gpu/Engine/MethodDraw.cs

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using Ryujinx.Graphics.GAL;
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using Ryujinx.Graphics.Gpu.Image;
using Ryujinx.Graphics.Gpu.State;
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namespace Ryujinx.Graphics.Gpu.Engine
{
partial class Methods
{
private bool _drawIndexed;
private bool _instancedDrawPending;
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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 IbStreamer _ibStreamer;
/// <summary>
/// Primitive topology of the current draw.
/// </summary>
public PrimitiveTopology Topology { get; private set; }
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/// <summary>
/// Finishes the draw call.
/// This draws geometry on the bound buffers based on the current GPU state.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
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private void DrawEnd(GpuState state, int argument)
{
var indexBuffer = state.Get<IndexBufferState>(MethodOffset.IndexBufferState);
DrawEnd(state, indexBuffer.First, indexBuffer.Count);
}
/// <summary>
/// Finishes the draw call.
/// This draws geometry on the bound buffers based on the current GPU state.
/// </summary>
/// <param name="state">Current GPU state</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(GpuState state, int firstIndex, int indexCount)
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{
ConditionalRenderEnabled renderEnable = GetRenderEnable(state);
if (renderEnable == ConditionalRenderEnabled.False || _instancedDrawPending)
{
if (renderEnable == ConditionalRenderEnabled.False)
{
PerformDeferredDraws();
}
_drawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
return;
}
UpdateState(state, firstIndex, indexCount);
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bool instanced = _vsUsesInstanceId || _isAnyVbInstanced;
if (instanced)
{
_instancedDrawPending = true;
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_instancedIndexed = _drawIndexed;
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_instancedFirstIndex = firstIndex;
_instancedFirstVertex = state.Get<int>(MethodOffset.FirstVertex);
_instancedFirstInstance = state.Get<int>(MethodOffset.FirstInstance);
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_instancedIndexCount = indexCount;
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var drawState = state.Get<VertexBufferDrawState>(MethodOffset.VertexBufferDrawState);
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_instancedDrawStateFirst = drawState.First;
_instancedDrawStateCount = drawState.Count;
_drawIndexed = false;
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if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
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return;
}
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int firstInstance = state.Get<int>(MethodOffset.FirstInstance);
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int inlineIndexCount = _ibStreamer.GetAndResetInlineIndexCount();
if (inlineIndexCount != 0)
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{
int firstVertex = state.Get<int>(MethodOffset.FirstVertex);
BufferRange br = new BufferRange(_ibStreamer.GetInlineIndexBuffer(), 0, inlineIndexCount * 4);
_context.Methods.BufferManager.SetIndexBuffer(br, IndexType.UInt);
_context.Renderer.Pipeline.DrawIndexed(
inlineIndexCount,
1,
firstIndex,
firstVertex,
firstInstance);
}
else if (_drawIndexed)
{
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int firstVertex = state.Get<int>(MethodOffset.FirstVertex);
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_context.Renderer.Pipeline.DrawIndexed(
indexCount,
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1,
firstIndex,
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firstVertex,
firstInstance);
}
else
{
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var drawState = state.Get<VertexBufferDrawState>(MethodOffset.VertexBufferDrawState);
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_context.Renderer.Pipeline.Draw(
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drawState.Count,
1,
drawState.First,
firstInstance);
}
_drawIndexed = false;
if (renderEnable == ConditionalRenderEnabled.Host)
{
_context.Renderer.Pipeline.EndHostConditionalRendering();
}
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}
/// <summary>
/// Starts draw.
/// This sets primitive type and instanced draw parameters.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
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private void DrawBegin(GpuState state, int argument)
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{
bool incrementInstance = (argument & (1 << 26)) != 0;
bool resetInstance = (argument & (1 << 27)) == 0;
PrimitiveType type = (PrimitiveType)(argument & 0xffff);
PrimitiveTypeOverride typeOverride = state.Get<PrimitiveTypeOverride>(MethodOffset.PrimitiveTypeOverride);
if (typeOverride != PrimitiveTypeOverride.Invalid)
{
DrawBegin(incrementInstance, resetInstance, typeOverride.Convert());
}
else
{
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)
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{
_instanceIndex++;
}
else if (resetInstance)
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{
PerformDeferredDraws();
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_instanceIndex = 0;
}
_context.Renderer.Pipeline.SetPrimitiveTopology(topology);
Topology = topology;
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}
/// <summary>
/// Sets the index buffer count.
/// This also sets internal state that indicates that the next draw is an indexed draw.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
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private void SetIndexBufferCount(GpuState state, int argument)
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{
_drawIndexed = true;
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void DrawIndexedSmall(GpuState state, int argument)
{
DrawIndexedSmall(state, argument, false);
}
/// <summary>
/// Performs a indexed draw with a low number of index buffer elements.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void DrawIndexedSmall2(GpuState state, int argument)
{
DrawIndexedSmall(state, 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="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void DrawIndexedSmallIncInstance(GpuState state, int argument)
{
DrawIndexedSmall(state, 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="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void DrawIndexedSmallIncInstance2(GpuState state, int argument)
{
DrawIndexedSmallIncInstance(state, 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="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
/// <param name="instanced">True to increment the current instance value, false otherwise</param>
private void DrawIndexedSmall(GpuState state, int argument, bool instanced)
{
PrimitiveTypeOverride typeOverride = state.Get<PrimitiveTypeOverride>(MethodOffset.PrimitiveTypeOverride);
DrawBegin(instanced, !instanced, typeOverride.Convert());
int firstIndex = argument & 0xffff;
int indexCount = (argument >> 16) & 0xfff;
bool oldDrawIndexed = _drawIndexed;
_drawIndexed = true;
DrawEnd(state, firstIndex, indexCount);
_drawIndexed = oldDrawIndexed;
}
/// <summary>
/// Pushes four 8-bit index buffer elements.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void VbElementU8(GpuState state, int argument)
{
_ibStreamer.VbElementU8(_context.Renderer, argument);
}
/// <summary>
/// Pushes two 16-bit index buffer elements.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void VbElementU16(GpuState state, int argument)
{
_ibStreamer.VbElementU16(_context.Renderer, argument);
}
/// <summary>
/// Pushes one 32-bit index buffer element.
/// </summary>
/// <param name="state">Current GPU state</param>
/// <param name="argument">Method call argument</param>
private void VbElementU32(GpuState state, int argument)
{
_ibStreamer.VbElementU32(_context.Renderer, argument);
}
/// <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>
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public void PerformDeferredDraws()
{
// Perform any pending instanced draw.
if (_instancedDrawPending)
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{
_instancedDrawPending = false;
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if (_instancedIndexed)
{
_context.Renderer.Pipeline.DrawIndexed(
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_instancedIndexCount,
_instanceIndex + 1,
_instancedFirstIndex,
_instancedFirstVertex,
_instancedFirstInstance);
}
else
{
_context.Renderer.Pipeline.Draw(
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_instancedDrawStateCount,
_instanceIndex + 1,
_instancedDrawStateFirst,
_instancedFirstInstance);
}
}
}
}
}