static void FrustumFromCamera(ref CameraMatrices cm, ref Frustum dest)
{
ProjectionHelper.FrustumFromMatrices(cm.projection, cm.view, ref dest);
}
protected override void OnUpdate()
{
var bgfxsys = World.GetExistingSystem <RendererBGFXSystem>();
if (!bgfxsys.Initialized)
{
return;
}
// make sure passes have viewid, transform, scissor rect and view rect set
// reset alreadyAdded state
// we expect < 100 or so passes, so the below code does not need to be crazy great
Entities.ForEach((ref RenderNode rnode) => { rnode.alreadyAdded = false; });
Entities.ForEach((ref RenderPass pass) => { pass.viewId = 0xffff; }); // there SHOULD not be any passes around that are not referenced by the graph...
// get all nodes, sort (bgfx issues in-order per view. a better api could use the render graph to issue without gpu
// barriers where possible)
// sort into eval order, assign pass viewId
ushort nextViewId = 0;
Entities.WithAll <RenderNodePrimarySurface>().ForEach((Entity eNode) => { RecAddPasses(eNode, ref nextViewId); });
Entities.WithAll <RenderPassAutoSizeToNode>().ForEach((Entity e, ref RenderPass pass) =>
{
if (EntityManager.HasComponent <RenderNodePrimarySurface>(pass.inNode))
{
var di = World.TinyEnvironment().GetConfigData <DisplayInfo>();
pass.viewport.x = 0;
pass.viewport.y = 0;
pass.viewport.w = (ushort)di.width;
pass.viewport.h = (ushort)di.height;
return;
}
if (EntityManager.HasComponent <RenderNodeTexture>(pass.inNode))
{
var texRef = EntityManager.GetComponentData <RenderNodeTexture>(pass.inNode);
pass.viewport = texRef.rect;
}
// TODO: add others like cubemap
});
// auto update passes that are matched with a camera
Entities.ForEach((Entity e, ref RenderPass pass, ref RenderPassUpdateFromCamera fromCam) =>
{
Entity eCam = fromCam.camera;
CameraMatrices camData = EntityManager.GetComponentData <CameraMatrices>(eCam);
pass.viewTransform = camData.view;
pass.projectionTransform = camData.projection;
if (EntityManager.HasComponent <Frustum>(eCam))
{
if (EntityManager.HasComponent <Frustum>(e))
{
EntityManager.SetComponentData(e, EntityManager.GetComponentData <Frustum>(eCam));
}
}
else
{
if (EntityManager.HasComponent <Frustum>(e))
{
EntityManager.SetComponentData(e, new Frustum());
}
}
});
// auto update passes that are matched with a light
Entities.ForEach((Entity e, ref RenderPass pass, ref RenderPassUpdateFromLight fromLight) =>
{
Entity eLight = fromLight.light;
LightMatrices lightData = EntityManager.GetComponentData <LightMatrices>(eLight);
pass.viewTransform = lightData.view;
pass.projectionTransform = lightData.projection;
if (EntityManager.HasComponent <Frustum>(eLight))
{
if (EntityManager.HasComponent <Frustum>(e))
{
EntityManager.SetComponentData(e, EntityManager.GetComponentData <Frustum>(eLight));
}
}
else
{
if (EntityManager.HasComponent <Frustum>(e))
{
EntityManager.SetComponentData(e, new Frustum());
}
}
});
// set up extra pass data
Entities.ForEach((Entity e, ref RenderPass pass) =>
{
if (pass.viewId == 0xffff)
{
RenderDebug.LogFormat("Render pass entity {0} on render node entity {1} is not referenced by the render graph. It should be deleted.", e, pass.inNode);
Assert.IsTrue(false);
return;
}
bool rtt = EntityManager.HasComponent <FramebufferBGFX>(pass.inNode);
// those could be more shared ... (that is, do all passes really need a copy of view & projection?)
unsafe { fixed(float4x4 * viewp = &pass.viewTransform, projp = &pass.projectionTransform)
{
if (bgfxsys.m_homogeneousDepth && bgfxsys.m_originBottomLeft) // gl style
{
bgfx.set_view_transform(pass.viewId, viewp, projp);
pass.flipCulling = 0;
}
else // dx style
{
bool yflip = !bgfxsys.m_originBottomLeft && rtt;
float4x4 adjustedProjection = RendererBGFXSystem.AdjustProjection(ref pass.projectionTransform, !bgfxsys.m_homogeneousDepth, yflip);
bgfx.set_view_transform(pass.viewId, viewp, &adjustedProjection);
pass.flipCulling = yflip ? (byte)3 : (byte)0;
}
} }
bgfx.set_view_mode(pass.viewId, (bgfx.ViewMode)pass.sorting);
bgfx.set_view_rect(pass.viewId, pass.viewport.x, pass.viewport.y, pass.viewport.w, pass.viewport.h);
bgfx.set_view_scissor(pass.viewId, pass.scissor.x, pass.scissor.y, pass.scissor.w, pass.scissor.h);
bgfx.set_view_clear(pass.viewId, (ushort)pass.clearFlags, pass.clearRGBA, pass.clearDepth, pass.clearStencil);
if (rtt)
{
var rttbgfx = EntityManager.GetComponentData <FramebufferBGFX>(pass.inNode);
bgfx.set_view_frame_buffer(pass.viewId, rttbgfx.handle);
}
else
{
bgfx.set_view_frame_buffer(pass.viewId, new bgfx.FrameBufferHandle {
idx = 0xffff
});
}
// touch it? needed?
bgfx.touch(pass.viewId);
});
}
