private PipelineState(GraphicsDevice graphicsDevice, PipelineStateDescription pipelineStateDescription) : base(graphicsDevice)
{
// First time, build caches
var pipelineStateCache = GetPipelineStateCache();
var depthClampEmulation = !pipelineStateDescription.RasterizerState.DepthClipEnable && !graphicsDevice.HasDepthClamp;
#if SILICONSTUDIO_XENKO_GRAPHICS_API_OPENGLES
// Depth Clamp can't be emulated on OpenGL ES 2 (TODO: warning?)
if (graphicsDevice.IsOpenGLES2)
{
depthClampEmulation = false;
}
#endif
// Store states
BlendState = new BlendState(pipelineStateDescription.BlendState, pipelineStateDescription.Output.RenderTargetCount > 0);
RasterizerState = new RasterizerState(pipelineStateDescription.RasterizerState);
DepthStencilState = new DepthStencilState(pipelineStateDescription.DepthStencilState, pipelineStateDescription.Output.DepthStencilFormat != PixelFormat.None);
PrimitiveType = pipelineStateDescription.PrimitiveType.ToOpenGL();
// Compile effect
var effectBytecode = pipelineStateDescription.EffectBytecode;
EffectProgram = effectBytecode != null?pipelineStateCache.EffectProgramCache.Instantiate(Tuple.Create(effectBytecode, depthClampEmulation)) : null;
var rootSignature = pipelineStateDescription.RootSignature;
if (rootSignature != null && effectBytecode != null)
{
ResourceBinder.Compile(graphicsDevice, rootSignature.EffectDescriptorSetReflection, effectBytecode);
}
// Vertex attributes
if (pipelineStateDescription.InputElements != null)
{
var vertexAttribs = new List <VertexAttrib>();
foreach (var inputElement in pipelineStateDescription.InputElements)
{
// Query attribute name from effect
var attributeName = "a_" + inputElement.SemanticName + inputElement.SemanticIndex;
int attributeIndex;
if (!EffectProgram.Attributes.TryGetValue(attributeName, out attributeIndex))
{
continue;
}
var vertexElementFormat = VertexAttrib.ConvertVertexElementFormat(inputElement.Format);
vertexAttribs.Add(new VertexAttrib(
inputElement.InputSlot,
attributeIndex,
vertexElementFormat.Size,
vertexElementFormat.Type,
vertexElementFormat.Normalized,
inputElement.AlignedByteOffset));
}
VertexAttribs = pipelineStateCache.VertexAttribsCache.Instantiate(vertexAttribs.ToArray());
}
}
private void AddAttribute(ref int index, ref VertexAttrib attrib, ref uint enabledVertexAttribArrays)
{
int attribIndex;
if (programAttributes.TryGetValue(attrib.AttributeName, out attribIndex))
{
vertexAttribs[index] = attrib;
vertexAttribs[index].Index = attribIndex;
#if SILICONSTUDIO_XENKO_GRAPHICS_API_OPENGLES
hasDynamicStagingVB |= attrib.VertexBufferId == 0;
#endif
if (attribIndex != -1)
{
enabledVertexAttribArrays |= 1U << attribIndex;
}
index++;
}
}
private void CreateAttributes()
{
int vertexAttribCount = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
vertexAttribCount += vertexBufferBindings[i].Declaration.VertexElements.Length;
}
vertexAttribs = new VertexAttrib[vertexAttribCount];
int j = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
var inputSlot = vertexBufferBindings[i];
var vertexBuffer = vertexBufferBindings[i].Buffer;
foreach (var vertexElementAndOffset in inputSlot.Declaration.EnumerateWithOffsets())
{
var vertexElement = vertexElementAndOffset.VertexElement;
var attributeName = "a_" + vertexElement.SemanticName + vertexElement.SemanticIndex;
var vertexElementFormat = ConvertVertexElementFormat(vertexElement.Format);
#if SILICONSTUDIO_XENKO_GRAPHICS_API_OPENGLES
IntPtr bufferStart = vertexBuffer.ResourceId == 0
? vertexBuffer.StagingData
: (IntPtr)vertexBufferBindings[i].Offset;
#else
var bufferStart = (IntPtr)vertexBufferBindings[i].Offset;
#endif
vertexAttribs[j] = new VertexAttrib
{
VertexBufferId = vertexBuffer.ResourceId,
Index = -1,
IsInteger = IsInteger(vertexElementFormat.Type),
Size = vertexElementFormat.Size,
Type = vertexElementFormat.Type,
Normalized = vertexElementFormat.Normalized,
Stride = inputSlot.Declaration.VertexStride,
Offset = bufferStart + vertexElementAndOffset.Offset,
AttributeName = attributeName
};
j++;
}
}
if (indexBufferBinding != null)
{
indexBufferId = indexBufferBinding.Buffer.resourceId;
#if SILICONSTUDIO_XENKO_GRAPHICS_API_OPENGLES
if (GraphicsDevice.IsOpenGLES2 && indexBufferBinding.Is32Bit)
{
throw new PlatformNotSupportedException("32 bits index buffer are not supported on OpenGL ES 2.0");
}
indexBufferOffset = (indexBufferId == 0 ? indexBufferBinding.Buffer.StagingData : IntPtr.Zero) +
indexBufferBinding.Offset;
#else
indexBufferOffset = (IntPtr)indexBufferBinding.Offset;
#endif
drawElementsType = indexBufferBinding.Is32Bit ? DrawElementsType.UnsignedInt : DrawElementsType.UnsignedShort;
indexElementSize = indexBufferBinding.Is32Bit ? 4 : 2;
}
// If we have a signature, we can already pre-create the instance
if (preferredInputSignature != null)
{
preferredInstance = GetInstance(preferredInputSignature);
}
currentShaderSignature = preferredInputSignature;
currentInstance = preferredInstance;
}
