protected void ValidateInit(ref RenderStateDesc desc)
{
int constantBufferCount = desc.constantBuffers != null ? desc.constantBuffers.Length : 0;
if (desc.shaderEffect.constantBufferCount != constantBufferCount)
{
throw new ArgumentException("RenderState constant-buffer count doesn't match ShaderEffect requirements");
}
int textureCount = desc.textures != null ? desc.textures.Length : 0;
if (desc.shaderEffect.textureCount != textureCount)
{
throw new ArgumentException("RenderState texture count doesn't match ShaderEffect requirements");
}
}
public abstract RenderStateBase CreateRenderState(RenderStateDesc desc);
protected void InitBase(ref RenderStateDesc desc)
{
int constantBufferCount = desc.constantBuffers != null ? desc.constantBuffers.Length : 0;
if (desc.shaderEffect.constantBufferCount != constantBufferCount)
{
throw new ArgumentException("RenderStateDesc constant-buffer count doesn't match ShaderEffect requirements");
}
int textureCount = desc.textures != null ? desc.textures.Length : 0;
if (desc.shaderEffect.textureCount != textureCount)
{
throw new ArgumentException("RenderStateDesc texture count doesn't match ShaderEffect requirements");
}
int randomAccessBufferCount = desc.randomAccessBuffers != null ? desc.randomAccessBuffers.Length : 0;
if (desc.shaderEffect.randomAccessBufferCount != randomAccessBufferCount)
{
throw new ArgumentException("RenderStateDesc random access buffer count doesn't match ShaderEffect requirements");
}
// validate independentBlendEnable is true settings
if (desc.blendDesc.independentBlendEnable)
{
// validate render-target blend descriptions length matches render-pass render-target count
if (desc.blendDesc.renderTargetBlendDescs == null || desc.blendDesc.renderTargetBlendDescs.Length != desc.renderPass.renderTargetCount)
{
throw new ArgumentException("'independentBlendEnable' requires 'renderTargetBlendDescs' length to match RenderPass render-target count");
}
// validate 'logicOperationEnabled' is not enabled when 'independentBlendEnable' is
if (desc.blendDesc.renderTargetBlendDescs != null)
{
foreach (var blendDesc in desc.blendDesc.renderTargetBlendDescs)
{
if (blendDesc.logicOperationEnabled)
{
throw new ArgumentException("'logicOperationEnabled' cannot be enabled when 'independentBlendEnable' is enabled");
}
}
}
}
// validate 'renderTargetBlendDescs' is null or length = 1 when 'independentBlendEnable' is disabled
if (!desc.blendDesc.independentBlendEnable && desc.blendDesc.renderTargetBlendDescs != null && desc.blendDesc.renderTargetBlendDescs.Length != 1)
{
throw new ArgumentException("'independentBlendEnable' set to false requires 'renderTargetBlendDescs' length to equal 1");
}
// validate both 'blendingEnabled' and 'logicOperationEnabled' are not enabled at the same time
if (desc.blendDesc.renderTargetBlendDescs != null)
{
foreach (var blendDesc in desc.blendDesc.renderTargetBlendDescs)
{
if (blendDesc.blendingEnabled && blendDesc.logicOperationEnabled)
{
throw new ArgumentException("Only 'blendingEnabled' or 'logicOperationEnabled' can be enabled not both");
}
}
}
// if index-buffer override is null, use built in vertex-buffer one
if (desc.indexBuffer == null)
{
var vertexBuffer = desc.vertexBufferStreamer.vertexBuffers[0];
desc.indexBuffer = vertexBuffer.indexBuffer;
}
}
public abstract RenderStateBase CreateRenderState(RenderStateDesc desc, int gpuIndex);
