static void RenderSpotLight(MyLightRenderElement lightElement, MyEffectPointLight effectPointLight)
{
MyLight light = lightElement.Light;
Matrix lightViewProjectionShadow = Matrix.Identity;
// Always cull clockwise (render inner parts of object), depth test is done in PS using light radius and cone angle
RasterizerState.CullClockwise.Apply();
DepthStencilState.None.Apply();
//m_device.BlendState = BlendState.Additive;
//Need to use max because of overshinning places where multiple lights shine
MyStateObjects.Light_Combination_BlendState.Apply();
if (lightElement.RenderShadows && lightElement.ShadowMap != null)
{
m_spotShadowRenderer.SetupSpotShadowBaseEffect(effectPointLight, lightElement.ShadowLightViewProjection, lightElement.ShadowMap);
}
effectPointLight.SetNearSlopeBiasDistance(4);
effectPointLight.SetLightPosition(light.Position);
effectPointLight.SetLightIntensity(light.Intensity);
effectPointLight.SetSpecularLightColor(light.SpecularColor);
effectPointLight.SetFalloff(light.Falloff);
effectPointLight.SetLightViewProjection(lightElement.View * lightElement.Projection);
effectPointLight.SetReflectorDirection(light.ReflectorDirection);
effectPointLight.SetReflectorConeMaxAngleCos(1 - light.ReflectorConeMaxAngleCos);
effectPointLight.SetReflectorColor(light.ReflectorColor);
effectPointLight.SetReflectorRange(light.ReflectorRange);
effectPointLight.SetReflectorIntensity(light.ReflectorIntensity);
effectPointLight.SetReflectorTexture(light.ReflectorTexture);
effectPointLight.SetReflectorFalloff(light.ReflectorFalloff);
if (lightElement.RenderShadows)
effectPointLight.SetTechnique(effectPointLight.DefaultSpotShadowTechnique);
else
effectPointLight.SetTechnique(effectPointLight.DefaultSpotTechnique);
MySimpleObjectDraw.DrawConeForLight(effectPointLight, lightElement.World);
}
static void RenderSpotLights(List<MyLightRenderElement> spotLightElements, MyEffectPointLight effectPointLight)
{
if (spotLightElements.Count == 0)
{
return;
}
spotLightElements.Sort(MyLightRenderElement.SpotComparer); // Sort by texture
var lastTexture = spotLightElements[0].Light.ReflectorTexture;
m_renderProfiler.StartProfilingBlock("RenderSpotLightList");
foreach (var spotElement in spotLightElements)
{
RenderSpotLight(spotElement, effectPointLight);
lastTexture = spotElement.Light.ReflectorTexture;
}
m_renderProfiler.EndProfilingBlock();
}
public static void DrawConeForLight(MyEffectPointLight effect, Vector3 position, Vector3 direction, Vector3 upVector, float coneLength, float coneCosAngle)
{
// Cone is oriented backwards
float scaleZ = -coneLength;
// Calculate cone side (hypotenuse of triangle)
float side = coneLength / coneCosAngle;
// Calculate cone bottom scale (Pythagoras theorem)
float scaleXY = (float)System.Math.Sqrt(side * side - coneLength * coneLength);
// Calculate world matrix as scale * light world matrix
Matrix world = Matrix.CreateScale(scaleXY, scaleXY, scaleZ) * Matrix.CreateWorld(position, direction, upVector);
DrawConeForLight(effect, world);
}
public static void DrawConeForLight(MyEffectPointLight effect, Matrix worldMatrix)
{
Matrix worldViewProjMatrix;
Matrix.Multiply(ref worldMatrix, ref MyCamera.ViewProjectionMatrix, out worldViewProjMatrix);
effect.SetWorldViewProjMatrix(ref worldViewProjMatrix);
effect.SetWorldMatrix(ref worldMatrix);
effect.Begin();
m_modelCone.Render();
effect.End();
}
public static void DrawHemisphereForLight(MyEffectPointLight effect, ref Vector3 position, float radius, ref Vector3 diffuseColor, float alpha)
{
Matrix scaleMatrix;
Matrix.CreateScale(radius, out scaleMatrix);
Matrix positionMatrix;
Matrix.CreateTranslation(ref position, out positionMatrix);
Matrix lightMatrix;
Matrix.Multiply(ref scaleMatrix, ref positionMatrix, out lightMatrix);
DrawHemisphereForLight(effect, ref lightMatrix, ref diffuseColor, alpha);
}
public static void DrawHemisphereForLight(MyEffectPointLight effect, ref Matrix worldMatrix, ref Vector3 diffuseColor, float alpha)
{
Matrix worldViewProjMatrix;
Matrix.Multiply(ref worldMatrix, ref MyCamera.ViewProjectionMatrix, out worldViewProjMatrix);
effect.SetWorldViewProjMatrix(ref worldViewProjMatrix);
effect.SetWorldMatrix(ref worldMatrix);
effect.Begin();
m_modelHemisphereLowRes.Render();
effect.End();
}
