Soft particles now has only one shader and one technique to work with any glsl version

jme3-core/src/main/resources/Common/MatDefs/Misc/Particle.j3md

@@ -59,10 +59,7 @@ MaterialDef Point Sprite {
         }
 
         Defines {
-            COLOR_MAP : ColorMap
-            DISCARD_ALPHA : AlphaDiscardThreshold
-            NUM_BONES : NumberOfBones
-            INSTANCING : UseInstancing
+            COLOR_MAP : Texture
         }
 
         ForcedRenderState {
@@ -77,30 +74,8 @@ MaterialDef Point Sprite {
 
     Technique SoftParticles{
 
-        VertexShader   GLSL100 : Common/MatDefs/Misc/SoftParticle.vert
-        FragmentShader GLSL100 : Common/MatDefs/Misc/SoftParticle.frag
-
-        WorldParameters {
-            WorldViewProjectionMatrix
-            WorldViewMatrix
-            WorldMatrix
-            CameraPosition
-        }
-
-        RenderState {
-            Blend AlphaAdditive
-            DepthWrite Off
-        }
-
-        Defines {
-            USE_TEXTURE : Texture
-        }
-    }
-
-    Technique SoftParticles15{
-
-        VertexShader   GLSL150 : Common/MatDefs/Misc/SoftParticle.vert
-        FragmentShader GLSL150 : Common/MatDefs/Misc/SoftParticle15.frag
+        VertexShader  GLSL100 GLSL150 : Common/MatDefs/Misc/SoftParticle.vert
+        FragmentShader GLSL120 GLSL150 : Common/MatDefs/Misc/SoftParticle.frag
 
         WorldParameters {
             WorldViewProjectionMatrix
@@ -122,14 +97,6 @@ MaterialDef Point Sprite {
         }
     }
 
-    Technique {
-        RenderState {
-            Blend AlphaAdditive
-            // DepthWrite Off
-            // AlphaTestFalloff 0.01
-        }
-    }
-
    Technique Glow {
 
         VertexShader GLSL100 GLSL150:   Common/MatDefs/Misc/Unshaded.vert

jme3-core/src/main/resources/Common/MatDefs/Misc/SoftParticle.frag

@@ -1,4 +1,7 @@
-uniform sampler2D m_DepthTexture;
+#import "Common/ShaderLib/GLSLCompat.glsllib"
+#import "Common/ShaderLib/MultiSample.glsllib"
+
+uniform DEPTHTEXTURE m_DepthTexture;
 uniform float m_Softness; // Power used in the contrast function
 varying vec2 vPos; // Position of the pixel
 varying vec2 projPos;// z and w valus in projection space
@@ -36,7 +39,7 @@ void main(){
     #endif
 
 
-    float depthv = texture2D(m_DepthTexture, vPos).x*2.0-1.0; // Scene depth
+    float depthv = fetchTextureSample(m_DepthTexture, vPos, 0).x * 2.0 - 1.0; // Scene depth
     depthv *= projPos.y;
     float particleDepth = projPos.x;
 	

jme3-core/src/main/resources/Common/MatDefs/Misc/SoftParticle15.frag

@@ -1,51 +0,0 @@
-#import "Common/ShaderLib/MultiSample.glsllib"
-
-uniform DEPTHTEXTURE m_DepthTexture;
-uniform float m_Softness; // Power used in the contrast function
-in vec2 vPos; // Position of the pixel
-in vec2 projPos;// z and w valus in projection space
-
-#ifdef USE_TEXTURE
-uniform sampler2D m_Texture;
-in vec4 texCoord;
-#endif
-
-in vec4 color;
-out vec4 outColor;
-
-float Contrast(in float d){
-    float val = clamp( 2.0*( (d > 0.5) ? 1.0-d : d ), 0.0, 1.0);
-    float a = 0.5 * pow(val, m_Softness);
-    return (d > 0.5) ? 1.0 - a : a;
-}
-
-float stdDiff(in float d){   
-    return clamp((d)*m_Softness,0.0,1.0);
-}
-
-
-void main(){
-    if (color.a <= 0.01)
-        discard;
-
-    outColor = vec4(1.0,1.0,1.0,1.0);//color;
-    #ifdef USE_TEXTURE
-        #ifdef POINT_SPRITE
-            vec2 uv = mix(texCoord.xy, texCoord.zw, gl_PointCoord.xy);
-        #else
-            vec2 uv = texCoord.xy;
-        #endif
-        outColor = getColor(m_Texture, uv) * color;
-    #endif
-
-    float depthv = getDepth(m_DepthTexture, vPos).x*2.0-1.0; // Scene depth
-    depthv*=projPos.y;   
-    float particleDepth = projPos.x;
-	
-    float zdiff =depthv-particleDepth;
-    if(zdiff<=0.0){
-        discard;
-    }
-    // Computes alpha based on the particles distance to the rest of the scene
-    outColor.a = outColor.a * stdDiff(zdiff);// Contrast(zdiff);  
-}

jme3-effects/src/main/java/com/jme3/post/filters/TranslucentBucketFilter.java

@@ -165,11 +165,9 @@ public final class TranslucentBucketFilter extends Filter {
             if (enabled) {
                 enabledSoftParticles = enabled;
 
+                emitter.getMaterial().selectTechnique("SoftParticles", renderManager);
                 if( processor.getNumSamples()>1){
-                    emitter.getMaterial().selectTechnique("SoftParticles15", renderManager);
                     emitter.getMaterial().setInt("NumSamplesDepth", processor.getNumSamples());
-                }else{
-                    emitter.getMaterial().selectTechnique("SoftParticles", renderManager);
                 }
                 emitter.getMaterial().setTexture("DepthTexture", processor.getDepthTexture());               
                 emitter.setQueueBucket(RenderQueue.Bucket.Translucent);

jme3-examples/src/main/java/jme3test/effect/TestSoftParticles.java

@@ -95,6 +95,10 @@ public class TestSoftParticles extends SimpleApplication {
         fpp = new FilterPostProcessor(assetManager);        
         tbf = new TranslucentBucketFilter(true);
         fpp.addFilter(tbf);
+        int samples = context.getSettings().getSamples();
+        if (samples > 0) {
+            fpp.setNumSamples(samples);
+        }
         viewPort.addProcessor(fpp);
 
         particleNode = new Node("particleNode");