public void Validate()
{
for (int attribIndex = 0; attribIndex < _vertexAttribsCount; attribIndex++)
{
VertexAttribDescriptor attrib = _vertexAttribs[attribIndex];
if (!attrib.IsZero)
{
if ((uint)attrib.BufferIndex >= _vertexBuffersCount)
{
DisableVertexAttrib(attribIndex);
continue;
}
if (_vertexBuffers[attrib.BufferIndex].Buffer.Handle == BufferHandle.Null)
{
DisableVertexAttrib(attribIndex);
continue;
}
if (_needsAttribsUpdate)
{
EnableVertexAttrib(attribIndex);
}
}
}
_needsAttribsUpdate = false;
}
public void Validate()
{
for (int attribIndex = 0; attribIndex < _vertexAttribs.Length; attribIndex++)
{
VertexAttribDescriptor attrib = _vertexAttribs[attribIndex];
if ((uint)attrib.BufferIndex >= _vertexBuffers.Length)
{
GL.DisableVertexAttribArray(attribIndex);
continue;
}
if (_vertexBuffers[attrib.BufferIndex].Buffer.Buffer == null)
{
GL.DisableVertexAttribArray(attribIndex);
continue;
}
if (_needsAttribsUpdate && !attrib.IsZero)
{
GL.EnableVertexAttribArray(attribIndex);
}
}
_needsAttribsUpdate = false;
}
public void SetVertexAttributes(ReadOnlySpan <VertexAttribDescriptor> vertexAttribs)
{
int index = 0;
for (; index < vertexAttribs.Length; index++)
{
VertexAttribDescriptor attrib = vertexAttribs[index];
if (attrib.Equals(_vertexAttribs[index]))
{
continue;
}
FormatInfo fmtInfo = FormatTable.GetFormatInfo(attrib.Format);
if (attrib.IsZero)
{
// Disabling the attribute causes the shader to read a constant value.
// The value is configurable, but by default is a vector of (0, 0, 0, 1).
DisableVertexAttrib(index);
}
else
{
EnableVertexAttrib(index);
}
int offset = attrib.Offset;
int size = fmtInfo.Components;
bool isFloat = fmtInfo.PixelType == PixelType.Float ||
fmtInfo.PixelType == PixelType.HalfFloat;
if (isFloat || fmtInfo.Normalized || fmtInfo.Scaled)
{
VertexAttribType type = (VertexAttribType)fmtInfo.PixelType;
GL.VertexAttribFormat(index, size, type, fmtInfo.Normalized, offset);
}
else
{
VertexAttribIntegerType type = (VertexAttribIntegerType)fmtInfo.PixelType;
GL.VertexAttribIFormat(index, size, type, offset);
}
GL.VertexAttribBinding(index, attrib.BufferIndex);
_vertexAttribs[index] = attrib;
}
_vertexAttribsCount = index;
for (; index < Constants.MaxVertexAttribs; index++)
{
DisableVertexAttrib(index);
}
}
/// <summary>
/// Updates host vertex attributes based on guest GPU state.
/// </summary>
/// <param name="state">Current GPU state</param>
private void UpdateVertexAttribState(GpuState state)
{
VertexAttribDescriptor[] vertexAttribs = new VertexAttribDescriptor[16];
for (int index = 0; index < 16; index++)
{
var vertexAttrib = state.Get <VertexAttribState>(MethodOffset.VertexAttribState, index);
if (!FormatTable.TryGetAttribFormat(vertexAttrib.UnpackFormat(), out Format format))
{
Logger.PrintDebug(LogClass.Gpu, $"Invalid attribute format 0x{vertexAttrib.UnpackFormat():X}.");
format = Format.R32G32B32A32Float;
}
vertexAttribs[index] = new VertexAttribDescriptor(
vertexAttrib.UnpackBufferIndex(),
vertexAttrib.UnpackOffset(),
format);
}
_context.Renderer.Pipeline.SetVertexAttribs(vertexAttribs);
}
/// <summary>
/// Updates host vertex attributes based on guest GPU state.
/// </summary>
private void UpdateVertexAttribState()
{
Span <VertexAttribDescriptor> vertexAttribs = stackalloc VertexAttribDescriptor[Constants.TotalVertexAttribs];
for (int index = 0; index < Constants.TotalVertexAttribs; index++)
{
var vertexAttrib = _state.State.VertexAttribState[index];
if (!FormatTable.TryGetAttribFormat(vertexAttrib.UnpackFormat(), out Format format))
{
Logger.Debug?.Print(LogClass.Gpu, $"Invalid attribute format 0x{vertexAttrib.UnpackFormat():X}.");
format = Format.R32G32B32A32Float;
}
vertexAttribs[index] = new VertexAttribDescriptor(
vertexAttrib.UnpackBufferIndex(),
vertexAttrib.UnpackOffset(),
vertexAttrib.UnpackIsConstant(),
format);
}
_context.Renderer.Pipeline.SetVertexAttribs(vertexAttribs);
}
