private void BeginSubpass(SoftwareExecutionContext context)
{
SoftwareFramebuffer frameBuffer = (SoftwareFramebuffer)m_renderPassBeginInfo.framebuffer;
for (int i = 0; i < context.m_CurrentSubpass.colorAttachmentCount; i++)
{
var attachmentRef = context.m_CurrentSubpass.pColorAttachments[i];
int attachmentIndex = attachmentRef.attachment;
var attachmentDescription = context.m_CurrentRenderPass.pAttachments[attachmentIndex];
if (attachmentDescription.loadOp == VkAttachmentLoadOp.VK_ATTACHMENT_LOAD_OP_CLEAR)
{
SoftwareImageView imageView = frameBuffer.m_createInfo.pAttachments[attachmentIndex] as SoftwareImageView;
var clearColor = m_renderPassBeginInfo.pClearValues[attachmentIndex];
m_ExecuteAction.Add(() => imageView.ClearColor(clearColor));
}
}
if (context.m_CurrentSubpass.pDepthStencilAttachment != null)
{
int attachmentIndex = context.m_CurrentSubpass.pDepthStencilAttachment[0].attachment;
var attachmentDescription = context.m_CurrentRenderPass.pAttachments[attachmentIndex];
if (attachmentDescription.loadOp == VkAttachmentLoadOp.VK_ATTACHMENT_LOAD_OP_CLEAR)
{
SoftwareImageView depthBufferImageView = frameBuffer.m_createInfo.pAttachments[attachmentIndex] as SoftwareImageView;
var clearColor = m_renderPassBeginInfo.pClearValues[attachmentIndex];
m_ExecuteAction.Add(() => depthBufferImageView.ClearDepth(clearColor));
}
}
}
internal SoftwareSampler2D(VkImageLayout imageLayout, SoftwareImageView imageView, SoftwareSampler sampler)
{
this.imageLayout = imageLayout;
this.imageView = imageView;
this.sampler = sampler;
this.m_Width = imageView.GetWidth();
this.m_Height = imageView.GetHeight();
}
internal SoftwareDepthBuffer(VkPipelineDepthStencilStateCreateInfo state, SoftwareImageView depthBufferImageView)
{
m_State = state;
if (m_State.depthTestEnable == VkBool32.VK_TRUE)
{
m_CompareOp = GetCompareOp(state.depthCompareOp);
}
else
{
m_CompareOp = GetCompareOp(VkCompareOp.VK_COMPARE_OP_ALWAYS);
}
m_depthBufferImageView = depthBufferImageView;
}
internal static ISoftwareDepthBuffer Create(SoftwareExecutionContext context)
{
VkPipelineDepthStencilStateCreateInfo pDepthStencilState = context.m_GraphicsPipeline.m_graphicsPipelineCreateInfo.pDepthStencilState;
if (pDepthStencilState.sType != VkStructureType.VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO)
{
return(new DisabledSoftwareDepthBuffer());
}
var frameBufferObj = (SoftwareFramebuffer)context.m_RenderPassBeginInfo.framebuffer;
var frameBuffer = frameBufferObj.m_createInfo;
int attachmentIndex = -1;
var subpass = context.m_CurrentSubpass;
if (subpass.pDepthStencilAttachment == null)
{
context.CommandBufferCompilationError($"WARNING: depth buffer not configured for subpass {context.m_SubpassIndex}");
return(new DisabledSoftwareDepthBuffer());
}
attachmentIndex = subpass.pDepthStencilAttachment[0].attachment;
if (attachmentIndex < 0 || attachmentIndex >= frameBuffer.attachmentCount)
{
context.CommandBufferCompilationError("ERROR: missing or invalid depth buffer attachment index");
return(new DisabledSoftwareDepthBuffer());
}
SoftwareImageView depthBufferImageView = (SoftwareImageView)frameBuffer.pAttachments[attachmentIndex];
if (depthBufferImageView == null)
{
context.CommandBufferCompilationError($"ERROR: missing image view for depth buffer for attachment {attachmentIndex}");
return(new DisabledSoftwareDepthBuffer());
}
return(new SoftwareDepthBuffer(pDepthStencilState, depthBufferImageView));
}
