public static void vkCmdSetViewport(VkCommandBuffer commandBuffer, uint firstViewport, VkViewport viewport)
{
vkCmdSetViewport(commandBuffer, firstViewport, 1, &viewport);
}
public override void Draw(RenderContext rc, CommandBuffer cmd)
{
var view = View;
if (view.Camera == null)
{
return;
}
UpdateCascades(view);
UpdateUniformBuffers(view);
casters[0].Clear();
casters[1].Clear();
casters[2].Clear();
shadowCasterQuery.Init(view.Camera, Drawable.DRAWABLE_ANY, view.ViewMask);
view.Scene.GetDrawables(shadowCasterQuery, (drawable) =>
{
if (drawable.CastShadows)
{
foreach (SourceBatch batch in drawable.Batches)
{
casters[batch.material.blendType].Add(batch);
if (batch.frameNum != view.Frame.frameNumber)
{
batch.frameNum = view.Frame.frameNumber;
batch.offset = FrameGraph.GetTransform(batch.worldTransform, (uint)batch.numWorldTransforms);
}
}
}
});
VkClearValue[] clearDepth = { new VkClearDepthStencilValue(1.0f, 0) };
if (RenderPass == null)
{
CreateRenderPass();
CreateRenderTargets();
}
//todo:multi thread
for (int i = 0; i < SHADOW_MAP_CASCADE_COUNT; i++)
{
VkViewport viewport = new VkViewport(0, 0, SHADOWMAP_DIM, SHADOWMAP_DIM, 0.0f, 1.0f);
VkRect2D renderArea = new VkRect2D(0, 0, SHADOWMAP_DIM, SHADOWMAP_DIM);
BeginRenderPass(cmd, cascades[i].frameBuffer, renderArea, clearDepth);
cmd.SetViewport(viewport);
cmd.SetScissor(renderArea);
uint cascade = (uint)i;
Span <ConstBlock> consts = stackalloc ConstBlock[]
{
new ConstBlock(VkShaderStageFlags.Vertex, 0, 4, Utilities.AsPointer(ref cascade))
};
foreach (var batch in casters[0])
{
DrawBatch(cmd, passID, batch, consts, vsSet);
}
EndRenderPass(cmd);
}
}
void DrawBatch(CommandBuffer cb, ulong passID, SourceBatch batch, Span <ConstBlock> pushConsts,
DescriptorSet resourceSet)
{
var shader = batch.material.Shader;
if ((passID & shader.passFlags) == 0)
{
return;
}
var pass = shader.GetPass(passID);
var pipe = pass.GetGraphicsPipeline(RenderPass, 0, batch.geometry);
cb.BindPipeline(VkPipelineBindPoint.Graphics, pipe);
batch.Draw(cb, pushConsts, resourceSet, default, pass);