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Pssm now supports fade out of the shadows when using a zextend

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9929 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
3.0
rem..om 12 years ago
parent a3cda69323
commit d1a036a021
9 changed files with 113 additions and 22 deletions
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  1. 3
      engine/src/core-data/Common/MatDefs/Light/Lighting.j3md
  2. 11
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter.frag
  3. 3
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter.j3md
  4. 10
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter15.frag
  5. 11
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM.frag
  6. 3
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM.j3md
  7. 13
      engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM15.frag
  8. 16
      engine/src/core/com/jme3/shadow/PssmShadowFilter.java
  9. 47
      engine/src/core/com/jme3/shadow/PssmShadowRenderer.java

3
engine/src/core-data/Common/MatDefs/Light/Lighting.j3md
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@ -111,6 +111,7 @@ MaterialDef Phong Lighting {
Float ShadowIntensity
Vector4 Splits
Vector2 FadeInfo
Matrix4 LightViewProjectionMatrix0
Matrix4 LightViewProjectionMatrix1
@ -207,6 +208,7 @@ MaterialDef Phong Lighting {
DISCARD_ALPHA : AlphaDiscardThreshold
COLOR_MAP : ColorMap
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
ForcedRenderState {
@ -232,6 +234,7 @@ MaterialDef Phong Lighting {
DISCARD_ALPHA : AlphaDiscardThreshold
COLOR_MAP : ColorMap
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
ForcedRenderState {

11
engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter.frag
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@ -18,6 +18,10 @@ uniform mat4 m_LightViewProjectionMatrix1;
uniform mat4 m_LightViewProjectionMatrix2;
uniform mat4 m_LightViewProjectionMatrix3;
#ifdef FADE
uniform vec2 m_FadeInfo;
#endif
vec3 getPosition(in float depth, in vec2 uv){
vec4 pos = vec4(uv, depth, 1.0) * 2.0 - 1.0;
pos = m_ViewProjectionMatrixInverse * pos;
@ -47,7 +51,7 @@ void main(){
float shadowPosition = m_ViewProjectionMatrixRow2.x * worldPos.x + m_ViewProjectionMatrixRow2.y * worldPos.y + m_ViewProjectionMatrixRow2.z * worldPos.z + m_ViewProjectionMatrixRow2.w;
float shadow = 0.0;
float shadow = 1.0;
if(shadowPosition < m_Splits.x){
shadow = GETSHADOW(m_ShadowMap0, projCoord0);
}else if( shadowPosition < m_Splits.y){
@ -59,10 +63,11 @@ void main(){
}else if( shadowPosition < m_Splits.w){
shadowBorderScale = 0.125;
shadow = GETSHADOW(m_ShadowMap3, projCoord3);
}else{
shadow = 1.0;
}
#ifdef FADE
shadow = max(0.0,mix(shadow,1.0,(shadowPosition - m_FadeInfo.x) * m_FadeInfo.y));
#endif
shadow= shadow * m_ShadowIntensity + (1.0 - m_ShadowIntensity);
gl_FragColor = color * vec4(shadow, shadow, shadow, 1.0);

3
engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter.j3md
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@ -11,6 +11,7 @@ MaterialDef Post Shadow {
Float ShadowIntensity
Vector4 Splits
Vector2 FadeInfo
Matrix4 LightViewProjectionMatrix0
Matrix4 LightViewProjectionMatrix1
@ -46,6 +47,7 @@ MaterialDef Post Shadow {
FILTER_MODE : FilterMode
PCFEDGE : PCFEdge
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
}
@ -63,6 +65,7 @@ MaterialDef Post Shadow {
FILTER_MODE : FilterMode
PCFEDGE : PCFEdge
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
}

10
engine/src/core-data/Common/MatDefs/Shadow/PostShadowFilter15.frag
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@ -20,6 +20,9 @@ uniform mat4 m_LightViewProjectionMatrix1;
uniform mat4 m_LightViewProjectionMatrix2;
uniform mat4 m_LightViewProjectionMatrix3;
#ifdef FADE
uniform vec2 m_FadeInfo;
#endif
vec3 getPosition(in float depth, in vec2 uv){
vec4 pos = vec4(uv, depth, 1.0) * 2.0 - 1.0;
@ -47,7 +50,7 @@ vec4 main_multiSample(in int numSample){
float shadowPosition = m_ViewProjectionMatrixRow2.x * worldPos.x + m_ViewProjectionMatrixRow2.y * worldPos.y + m_ViewProjectionMatrixRow2.z * worldPos.z + m_ViewProjectionMatrixRow2.w;
float shadow = 0.0;
float shadow = 1.0;
if(shadowPosition < m_Splits.x){
shadow = GETSHADOW(m_ShadowMap0, projCoord0);
}else if( shadowPosition < m_Splits.y){
@ -59,10 +62,11 @@ float shadow = 0.0;
}else if( shadowPosition < m_Splits.w){
shadowBorderScale = 0.125;
shadow = GETSHADOW(m_ShadowMap3, projCoord3);
}else{
shadow = 1.0;
}
#ifdef FADE
shadow = max(0.0,mix(shadow,1.0,(shadowPosition - m_FadeInfo.x) * m_FadeInfo.y));
#endif
shadow= shadow * m_ShadowIntensity + (1.0 - m_ShadowIntensity);
return color * vec4(shadow, shadow, shadow, 1.0);

11
engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM.frag
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@ -16,6 +16,10 @@ varying vec4 projCoord3;
varying vec2 texCoord;
#endif
#ifdef FADE
uniform vec2 m_FadeInfo;
#endif
void main(){
#ifdef DISCARD_ALPHA
@ -30,7 +34,7 @@ void main(){
#endif
float shadow = 0.0;
float shadow = 1.0;
if(shadowPosition < m_Splits.x){
shadow = GETSHADOW(m_ShadowMap0, projCoord0);
}else if( shadowPosition < m_Splits.y){
@ -42,10 +46,11 @@ void main(){
}else if( shadowPosition < m_Splits.w){
shadowBorderScale = 0.125;
shadow = GETSHADOW(m_ShadowMap3, projCoord3);
}else{
shadow = 1.0;
}
#ifdef FADE
shadow = max(0.0,mix(shadow,1.0,(shadowPosition - m_FadeInfo.x) * m_FadeInfo.y));
#endif
shadow = shadow * m_ShadowIntensity + (1.0 - m_ShadowIntensity);
gl_FragColor = vec4(shadow, shadow, shadow, 1.0);

3
engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM.j3md
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@ -11,6 +11,7 @@ MaterialDef Post Shadow {
Float ShadowIntensity
Vector4 Splits
Vector2 FadeInfo
Matrix4 LightViewProjectionMatrix0
Matrix4 LightViewProjectionMatrix1
@ -36,6 +37,7 @@ MaterialDef Post Shadow {
FILTER_MODE : FilterMode
PCFEDGE : PCFEdge
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
RenderState {
@ -59,6 +61,7 @@ MaterialDef Post Shadow {
FILTER_MODE : FilterMode
PCFEDGE : PCFEdge
SHADOWMAP_SIZE : ShadowMapSize
FADE : FadeInfo
}
RenderState {

13
engine/src/core-data/Common/MatDefs/Shadow/PostShadowPSSM15.frag
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@ -17,6 +17,10 @@ in vec4 projCoord3;
varying vec2 texCoord;
#endif
#ifdef FADE
uniform vec2 m_FadeInfo;
#endif
void main(){
#ifdef DISCARD_ALPHA
@ -32,7 +36,7 @@ void main(){
#endif
float shadow = 0.0;
float shadow = 1.0;
if(shadowPosition < m_Splits.x){
shadow = GETSHADOW(m_ShadowMap0, projCoord0);
}else if( shadowPosition < m_Splits.y){
@ -44,12 +48,13 @@ void main(){
}else if( shadowPosition < m_Splits.w){
shadowBorderScale = 0.125;
shadow = GETSHADOW(m_ShadowMap3, projCoord3);
}else{
shadow = 1.0;
}
shadow= shadow * m_ShadowIntensity + (1.0 - m_ShadowIntensity);
#ifdef FADE
shadow = max(0.0,mix(shadow,1.0,(shadowPosition - m_FadeInfo.x) * m_FadeInfo.y));
#endif
shadow = shadow * m_ShadowIntensity + (1.0 - m_ShadowIntensity);
outFragColor = vec4(shadow, shadow, shadow, 1.0);
}

16
engine/src/core/com/jme3/shadow/PssmShadowFilter.java
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@ -246,6 +246,22 @@ public class PssmShadowFilter extends Filter {
pssmRenderer.setFilterMode(filterMode);
}
/**
* Define the length over which the shadow will fade out when using a shadowZextend
* @param length the fade length in world units
*/
public void setShadowZFadeLength(float length){
pssmRenderer.setShadowZFadeLength(length);
}
/**
* get the length over which the shadow will fade out when using a shadowZextend
* @return the fade length in world units
*/
public float getShadowZFadeLength(){
return pssmRenderer.getShadowZFadeLength();
}
@Override
public void write(JmeExporter ex) throws IOException {
super.write(ex);

47
engine/src/core/com/jme3/shadow/PssmShadowRenderer.java
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@ -35,6 +35,7 @@ import com.jme3.asset.AssetManager;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Matrix4f;
import com.jme3.math.Vector2f;
import com.jme3.math.Vector3f;
import com.jme3.post.SceneProcessor;
import com.jme3.renderer.Camera;
@ -162,6 +163,10 @@ public class PssmShadowRenderer implements SceneProcessor {
private boolean applyShadowIntensity = true;
//a list of material of the post shadow queue geometries.
private List<Material> matCache = new ArrayList<Material>();
//Holding the info for fading shadows in the far distance
private Vector2f fadeInfo;
private float fadeLength;
private boolean applyFadeInfo = true;
/**
* Create a PSSM Shadow Renderer
@ -542,6 +547,11 @@ public class PssmShadowRenderer implements SceneProcessor {
applyShadowIntensity = false;
}
if (fadeInfo != null && mat.getParam("FadeInfo") == null || applyFadeInfo) {
mat.setVector2("FadeInfo", fadeInfo);
applyFadeInfo = false;
}
}
//At least one material of the receiving geoms does not support the post shadow techniques
@ -604,7 +614,11 @@ public class PssmShadowRenderer implements SceneProcessor {
* @param zFar the zFar values that override the computed one
*/
public void setShadowZExtend(float zFar) {
if(fadeInfo!=null){
fadeInfo.set(zFar - fadeLength, 1f / fadeLength);
}
this.zFarOverride = zFar;
}
/**
@ -665,4 +679,37 @@ public class PssmShadowRenderer implements SceneProcessor {
public void setFlushQueues(boolean flushQueues) {
this.flushQueues = flushQueues;
}
/**
* Define the length over which the shadow will fade out when using a
* shadowZextend
* This is useful to make dynamic shadows fade into baked shadows in the distance.
* @param length the fade length in world units
*/
public void setShadowZFadeLength(float length) {
if (length == 0) {
fadeInfo = null;
fadeLength = 0;
postshadowMat.clearParam("FadeInfo");
} else {
if (zFarOverride == 0) {
fadeInfo = new Vector2f(0, 0);
} else {
fadeInfo = new Vector2f(zFarOverride - length, 1.0f / length);
}
fadeLength = length;
postshadowMat.setVector2("FadeInfo", fadeInfo);
}
}
/**
* get the length over which the shadow will fade out when using a shadowZextend
* @return the fade length in world units
*/
public float getShadowZFadeLength(){
if(fadeInfo!=null){
return zFarOverride - fadeInfo.x;
}
return 0f;
}
}

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