Jme nifty render device optimization :

- Banished color buffer updating at render time (except for gradient quads that uses vertex color)
- fully transparent quads are not rendered anymore (that avoid rendering transparent layers allowing complex layout for free).

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9232 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuad.frag

@@ -1,6 +1,6 @@
-varying vec4 color;
+uniform vec4 m_Color;
 
 void main() { 
-    gl_FragColor = color;
+    gl_FragColor = m_Color;
 }
 

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuad.vert

@@ -1,15 +1,9 @@
 uniform mat4 g_WorldViewProjectionMatrix;
-uniform vec4 m_Color;
 
 attribute vec4 inPosition;
-attribute vec4 inColor;
 
-varying vec2 texCoord;
-varying vec4 color;
 
 void main() {
     vec2 pos = (g_WorldViewProjectionMatrix * inPosition).xy;
     gl_Position = vec4(pos, 0.0, 1.0);
-
-    color = inColor * m_Color;
 }

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuadGrad.frag

@@ -0,0 +1,6 @@
+varying vec4 color;
+
+void main() { 
+    gl_FragColor = color;
+}
+

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuadGrad.j3md

@@ -0,0 +1,18 @@
+MaterialDef Default GUI {
+
+    MaterialParameters {              
+    }
+
+    Technique {
+        VertexShader GLSL100:   Common/MatDefs/Nifty/NiftyQuadGrad.vert
+        FragmentShader GLSL100: Common/MatDefs/Nifty/NiftyQuadGrad.frag
+
+        WorldParameters {
+            WorldViewProjectionMatrix
+        }   
+    }
+
+    Technique FixedFunc {
+    }
+
+}

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuadGrad.vert

@@ -0,0 +1,14 @@
+uniform mat4 g_WorldViewProjectionMatrix;
+
+attribute vec4 inPosition;
+attribute vec4 inColor;
+attribute vec4 inIndex;
+
+varying vec4 color;
+
+void main() {
+    vec2 pos = (g_WorldViewProjectionMatrix * inPosition).xy;
+    gl_Position = vec4(pos, 0.0, 1.0);
+
+    color = inIndex;
+}

engine/src/niftygui/Common/MatDefs/Nifty/NiftyTex.frag

@@ -1,12 +1,10 @@
 uniform sampler2D m_Texture;
-uniform vec4 m_Color;
+uniform vec4 m_Color; 
 
 varying vec2 texCoord;
-varying vec4 color;
 
 void main() {
     vec4 texVal = texture2D(m_Texture, texCoord);
- //   texVal = m_UseTex ? texVal : vec4(1.0);
-    gl_FragColor = texVal * color ;
+    gl_FragColor = texVal * m_Color ;
 }
 

engine/src/niftygui/Common/MatDefs/Nifty/NiftyTex.vert

@@ -1,17 +1,13 @@
 uniform mat4 g_WorldViewProjectionMatrix;
-uniform vec4 m_Color; 
 
 attribute vec4 inPosition;
-attribute vec4 inColor;
 attribute vec2 inTexCoord;
 
 varying vec2 texCoord;
-varying vec4 color;
 
 void main() {
     vec2 pos = (g_WorldViewProjectionMatrix * inPosition).xy;
     gl_Position = vec4(pos, 0.0, 1.0);
 
-    texCoord = inTexCoord;
-    color = inColor * m_Color;
+    texCoord = inTexCoord;    
 }

engine/src/niftygui/com/jme3/niftygui/RenderDeviceJme.java

@@ -69,6 +69,7 @@ public class RenderDeviceJme implements RenderDevice {
     private final Geometry quadGeom = new Geometry("nifty-quad", quad);
     private final Material niftyMat;
     private final Material niftyQuadMat;
+    private final Material niftyQuadGradMat;    
     private boolean clipWasSet = false;
     private BlendMode blendMode = null;
     private VertexBuffer quadDefaultTC = quad.getBuffer(Type.TexCoord);
@@ -88,10 +89,17 @@ public class RenderDeviceJme implements RenderDevice {
         
         quadModTC.setUsage(Usage.Stream);
         
+        //Color + texture color material for text and images
         niftyMat = new Material(display.getAssetManager(), "Common/MatDefs/Nifty/NiftyTex.j3md");
         niftyMat.getAdditionalRenderState().setDepthTest(false);
+        //Color material for uniform colored quads
         niftyQuadMat = new Material(display.getAssetManager(), "Common/MatDefs/Nifty/NiftyQuad.j3md");
-        niftyQuadMat.getAdditionalRenderState().setDepthTest(false);
+        niftyQuadMat.getAdditionalRenderState().setDepthTest(false);        
+        
+        //vertex color only for gradient quads (although i didn't find a way in nifty to make a gradient using vertex color)
+        niftyQuadGradMat = new Material(display.getAssetManager(), "Common/MatDefs/Nifty/NiftyQuadGrad.j3md");
+        niftyQuadGradMat.getAdditionalRenderState().setDepthTest(false);        
+        
     }
     
     public void setResourceLoader(NiftyResourceLoader niftyResourceLoader) {
@@ -105,7 +113,7 @@ public class RenderDeviceJme implements RenderDevice {
     // TODO: Cursor support
     public MouseCursor createMouseCursor(String str, int x, int y) {
         return new MouseCursor() {
-
+            
             public void dispose() {
             }
         };
@@ -179,19 +187,19 @@ public class RenderDeviceJme implements RenderDevice {
         return outColor.set(inColor.getRed(), inColor.getGreen(), inColor.getBlue(), inColor.getAlpha());
     }
     
-    private void setColor(Color color) {
-        ByteBuffer buf = (ByteBuffer) quadColor.getData();
-        buf.rewind();
-        
-        int color2 = convertColor(color);
-        buf.putInt(color2);
-        buf.putInt(color2);
-        buf.putInt(color2);
-        buf.putInt(color2);
-        
-        buf.flip();
-        quadColor.updateData(buf);
-    }
+//    private void setColor(Color color) {
+//        ByteBuffer buf = (ByteBuffer) quadColor.getData();
+//        buf.rewind();
+//        
+//        int color2 = convertColor(color);
+//        buf.putInt(color2);
+//        buf.putInt(color2);
+//        buf.putInt(color2);
+//        buf.putInt(color2);
+//        
+//        buf.flip();
+//        quadColor.updateData(buf);
+//    }
 
     /**
      * 
@@ -252,9 +260,9 @@ public class RenderDeviceJme implements RenderDevice {
         Texture2D texture = jmeImage.getTexture();
         
         niftyMat.getAdditionalRenderState().setBlendMode(convertBlend());
-        niftyMat.setColor("Color", ColorRGBA.White);
+        niftyMat.setColor("Color", convertColor(color, tempColor));
         niftyMat.setTexture("Texture", texture);        
-        setColor(color);
+        //setColor(color);
         
         float imageWidth = jmeImage.getWidth();
         float imageHeight = jmeImage.getHeight();
@@ -298,9 +306,9 @@ public class RenderDeviceJme implements RenderDevice {
         RenderImageJme jmeImage = (RenderImageJme) image;
         
         niftyMat.getAdditionalRenderState().setBlendMode(convertBlend());
-        niftyMat.setColor("Color", ColorRGBA.White);
+        niftyMat.setColor("Color", convertColor(color, tempColor));
         niftyMat.setTexture("Texture", jmeImage.getTexture());        
-        setColor(color);
+        //setColor(color);
         
         quad.clearBuffer(Type.TexCoord);
         quad.setBuffer(quadDefaultTC);
@@ -319,17 +327,17 @@ public class RenderDeviceJme implements RenderDevice {
     }
     
     public void renderQuad(int x, int y, int width, int height, Color color) {
-        niftyQuadMat.getAdditionalRenderState().setBlendMode(convertBlend());
-        niftyQuadMat.setColor("Color", ColorRGBA.White);        
-        setColor(color);
-        
-        tempMat.loadIdentity();
-        tempMat.setTranslation(x, getHeight() - y, 0);
-        tempMat.setScale(width, height, 0);
-        
-        rm.setWorldMatrix(tempMat);
-        niftyQuadMat.render(quadGeom, rm);
-
+        if (color.getAlpha() > 0) {
+            niftyQuadMat.getAdditionalRenderState().setBlendMode(convertBlend());
+            niftyQuadMat.setColor("Color", convertColor(color, tempColor));                        
+            
+            tempMat.loadIdentity();
+            tempMat.setTranslation(x, getHeight() - y, 0);
+            tempMat.setScale(width, height, 0);
+            
+            rm.setWorldMatrix(tempMat);
+            niftyQuadMat.render(quadGeom, rm);
+        }
 //        System.out.println("renderQuad (Solid)");
     }
     
@@ -348,15 +356,14 @@ public class RenderDeviceJme implements RenderDevice {
         buf.flip();
         quadColor.updateData(buf);
         
-        niftyQuadMat.getAdditionalRenderState().setBlendMode(convertBlend());
-        niftyQuadMat.setColor("Color", ColorRGBA.White);        
+        niftyQuadGradMat.getAdditionalRenderState().setBlendMode(convertBlend());      
         
         tempMat.loadIdentity();
         tempMat.setTranslation(x, getHeight() - y, 0);
         tempMat.setScale(width, height, 0);
         
         rm.setWorldMatrix(tempMat);
-        niftyQuadMat.render(quadGeom, rm);
+        niftyQuadGradMat.render(quadGeom, rm);
 //        
 //        System.out.println("renderQuad (Grad)");
     }