public void RenderLights(DeviceContext context, Camera camera, List <RenderableLightInst> lights)
{
//instanced rendering of all other lights, using appropriate shapes
//blend mode: additive
var ps = (MSAASampleCount > 1) ? LightMSPS : LightPS;
context.VertexShader.Set(LightVS);
context.PixelShader.Set(ps);
LightVSVars.Vars.ViewProj = Matrix.Transpose(camera.ViewProjMatrix);
LightVSVars.Vars.CameraPos = new Vector4(camera.Position, 0.0f);
LightVSVars.Vars.LightType = 0;
LightVSVars.Vars.IsLOD = 0;
LightVSVars.Vars.Pad0 = 0;
LightVSVars.Vars.Pad1 = 0;
LightVSVars.Update(context);
LightVSVars.SetVSCBuffer(context, 0);
LightPSVars.Vars.ViewProjInv = Matrix.Transpose(camera.ViewProjInvMatrix);
LightPSVars.Vars.CameraPos = new Vector4(camera.Position, 0.0f);
LightPSVars.Vars.EnableShadows = 0;
LightPSVars.Vars.RenderMode = 0;
LightPSVars.Vars.RenderModeIndex = 1;
LightPSVars.Vars.RenderSamplerCoord = 0;
LightPSVars.Vars.LightType = 0;
LightPSVars.Vars.IsLOD = 0;
LightPSVars.Vars.SampleCount = (uint)MSAASampleCount;
LightPSVars.Vars.SampleMult = 1.0f / MSAASampleCount;
LightPSVars.Update(context);
LightPSVars.SetPSCBuffer(context, 0);
context.PixelShader.SetShaderResources(0, GBuffers.DepthSRV);
context.PixelShader.SetShaderResources(2, GBuffers.SRVs);
for (int i = 0; i < lights.Count; i++)
{
var li = lights[i];
var rl = li.Light;
var pos = rl.Position;
var dir = rl.Direction;
var tx = rl.TangentX;
var ty = rl.TangentY;
if (rl.Bone != null)
{
var xform = rl.Bone.AnimTransform;
pos = xform.Multiply(pos);
dir = xform.MultiplyRot(dir);
tx = xform.MultiplyRot(tx);
ty = xform.MultiplyRot(ty);
}
LightInstVars.Vars.InstPosition = li.EntityPosition + li.EntityRotation.Multiply(pos) - camera.Position;
LightInstVars.Vars.InstDirection = li.EntityRotation.Multiply(dir);
LightInstVars.Vars.InstTangentX = li.EntityRotation.Multiply(tx);
LightInstVars.Vars.InstTangentY = li.EntityRotation.Multiply(ty);
LightInstVars.Vars.InstCapsuleExtent = li.EntityRotation.Multiply(rl.CapsuleExtent);
LightInstVars.Vars.InstCullingPlaneNormal = li.EntityRotation.Multiply(rl.CullingPlaneNormal);
LightInstVars.Vars.InstColour = rl.Colour;
LightInstVars.Vars.InstIntensity = rl.Intensity;
LightInstVars.Vars.InstFalloff = rl.Falloff;
LightInstVars.Vars.InstFalloffExponent = rl.FalloffExponent;
LightInstVars.Vars.InstConeInnerAngle = rl.ConeInnerAngle;
LightInstVars.Vars.InstConeOuterAngle = rl.ConeOuterAngle;
LightInstVars.Vars.InstType = (uint)rl.Type;
LightInstVars.Vars.InstCullingPlaneOffset = rl.CullingPlaneOffset;
LightInstVars.Update(context);
LightInstVars.SetVSCBuffer(context, 1);
LightInstVars.SetPSCBuffer(context, 2);
switch (rl.Type)
{
case LightType.Point:
LightSphere.Draw(context);
break;
case LightType.Spot:
LightCone.Draw(context);
break;
case LightType.Capsule:
LightCapsule.Draw(context);
break;
default:
break;
}
}
context.VertexShader.Set(null);
context.VertexShader.SetShaderResources(0, null, null, null);
context.PixelShader.Set(null);
context.PixelShader.SetShaderResources(0, null, null, null, null, null, null, null);
context.PixelShader.SetSamplers(0, null, null);
}
