Changeset 2967

Timestamp:

09/23/08 18:02:33 (16 years ago)

Author:

mattausch

Message:

 

Location:

GTP/trunk/App/Demos/Vis/FriendlyCulling/src

Files:

• DeferredRenderer.cpp (modified) (11 diffs)
• SkyPreetham.cpp (modified) (5 diffs)
• ToneMapper.cpp (modified) (4 diffs)
• chcdemo.cpp (modified) (3 diffs)
• shaderenv.h (modified) (1 diff)
• shaders/antialiasing.cg (modified) (3 diffs)
• shaders/deferred.cg (modified) (5 diffs)
• shaders/sky_preetham.cg (modified) (1 diff)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredRenderer.cpp

@@ -35 +35 @@
 static CGprogram sCgCombinedIllumProgram = NULL;
 
+
 ///////////////////////////////////////
 
@@ -98 +99 @@
 
 static CGparameter sImageKeyParam;
-static CGparameter sImageKeyShadowParam;
 
 //#define USE_3D_SSAO
@@ -286 +286 @@
                 sNormalsTexDeferredParam = cgGetNamedParameter(sCgDeferredProgram, "normals");
                 sLightDirParam = cgGetNamedParameter(sCgDeferredProgram, "lightDir");
-
-                sImageKeyParam = cgGetNamedParameter(sCgDeferredProgram, "imageKey");
         }
         else
@@ -408 +406 @@
                 cgGLLoadProgram(sCgAntiAliasingProgram);
 
+                sImageKeyParam = cgGetNamedParameter(sCgAntiAliasingProgram, "imageKey");
+
                 sColorsTexAntiAliasingParam = cgGetNamedParameter(sCgAntiAliasingProgram, "colors");  
                 sNormalsTexAntiAliasingParam = cgGetNamedParameter(sCgAntiAliasingProgram, "normals");
@@ -440 +440 @@
                 sLightDirShadowParam = cgGetNamedParameter(sCgDeferredShadowProgram, "lightDir");
 
-                sImageKeyShadowParam = cgGetNamedParameter(sCgDeferredShadowProgram, "imageKey");
 
                 PoissonDiscSampleGenerator2 poisson(NUM_PCF_TABS, 1.0f);
@@ -668 +667 @@
 void DeferredRenderer::AntiAliasing(FrameBufferObject *fbo)
 {
+        const float imageKey = ToneMapper().CalcImageKey(fbo->GetColorBuffer(colorBufferIdx));
+
         GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
         GLuint normalsTex = fbo->GetColorBuffer(2)->GetTexture();
@@ -681 +682 @@
         cgGLSetTextureParameter(sNormalsTexAntiAliasingParam, normalsTex);
         cgGLEnableTextureParameter(sNormalsTexAntiAliasingParam);
+
+        cgGLSetParameter1f(sImageKeyParam, imageKey);
 
         glColor3f(1.0f, 1.0f, 1.0f);
@@ -708 +711 @@
 void DeferredRenderer::FirstPass(FrameBufferObject *fbo, DirectionalLight *light)
 {
-        const float imageKey = ToneMapper().CalcImageKey(fbo->GetColorBuffer(0));
-
         GLuint colorsTex = fbo->GetColorBuffer(0)->GetTexture();
         GLuint positionsTex = fbo->GetColorBuffer(1)->GetTexture();
@@ -737 +738 @@
         cgGLSetParameter3f(sLightDirParam, lightDir.x, lightDir.y, lightDir.z);
 
-        cgGLSetParameter1f(sImageKeyParam, imageKey);
 
         glColor3f(1.0f, 1.0f, 1.0f);
@@ -978 +978 @@
                                                                            ShadowMap *shadowMap)
 {
-        const float imageKey = ToneMapper().CalcImageKey(fbo->GetColorBuffer(0));
-
         GLuint colorsTex = fbo->GetColorBuffer(0)->GetTexture();
 
@@ -1024 +1022 @@
         cgGLSetParameter3f(sLightDirShadowParam, lightDir.x, lightDir.y, lightDir.z);
 
-        // the average log luminance for tone mapping
-        cgGLSetParameter1f(sImageKeyShadowParam, imageKey);
 
         glColor3f(1.0f, 1.0f, 1.0f);

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/SkyPreetham.cpp

@@ -272 +272 @@
         ComputeFactors(sunDir, zenithColor, ABCDE, sun_theta);
 
-        ambient = zenithColor;
-
         Vector3 zenith_XYZ;                                                                                             
 
-        zenith_XYZ.x = (ambient.x / ambient.y) * ambient.z;                                                                        
-        zenith_XYZ.y = ambient.z;                                                                                          
-        zenith_XYZ.z = ((1.0f - ambient.x - ambient.y) / ambient.y) * ambient.z;                                                                
+        zenith_XYZ.x = (zenithColor.x / zenithColor.y) * zenithColor.z;                                                                        
+        zenith_XYZ.y = zenithColor.z;                                                                                          
+        zenith_XYZ.z = ((1.0f - zenithColor.x - zenithColor.y) / zenithColor.y) * zenithColor.z;                                                                
 
         ambient.x =  3.240479f * zenith_XYZ.x - 1.537150f * zenith_XYZ.y - 0.498535f * zenith_XYZ.z;
@@ -285 +283 @@
 
         // downscale ambient color
-        ambient *= 5e-5f;
+        //ambient *= 5e-5f;
+        ambient *= 2e-5f;
 
         // simulate the sun intensity by modulating the ambient term.
-        ambient *= (1.0f - 0.9f * DotProd(sunDir, Vector3::UNIT_Z()));
+        //ambient *= (1.0f - 0.9f * DotProd(sunDir, Vector3::UNIT_Z()));
         ambient += Vector3(0.2f);
 
@@ -304 +303 @@
 
 
-        Vector3 xyY = (num / den) * zenithColor;    
+        Vector3 xyY = zenithColor * num / den;    
 
         Vector3 XYZ;                                                                                             
@@ -312 +311 @@
         XYZ.z = ((1.0f - xyY.x - xyY.y) / xyY.y) * xyY.z;                                                                
 
+
+        /////////////
+        //-- transform to rgb
 
         Vector3 color;  
@@ -319 +321 @@
 
         // Calculate final sun diffuse color.
-        diffuse = color * 0.00017f;
-}
+        diffuse = color * 1.7e-4f;
+        //diffuse = color;
+
+        cout << "diffuse: " << Magnitude(diffuse) << " ambient: " << Magnitude(ambient) << endl;
+}

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/ToneMapper.cpp

@@ -1 +1 @@
 #include "ToneMapper.h"
 #include "FrameBufferObject.h"
+
+
+using namespace std;
 
 
@@ -14 +17 @@
 float ToneMapper::CalcImageKey(ColorBufferObject *colorBuffer) const
 {
-        float totalLum = 0;
+        float totalLum = .0f;
 
         // we assume that we have a floating point rgba texture
@@ -35 +38 @@
                         float pixLum = 0.2125f * r + 0.7154f * g + 0.0721f * b;
 
-                        totalLum += log(pixLum + 1e-3f);
+                        totalLum += log(pixLum + 1e-6f);
                 }
         }
 
-        const float key = exp(totalLum) / (float)(w * h);
+        //cout << "totalLum: " << totalLum <<  endl;
+
+        const float key = exp(totalLum / (float)(w * h));
 
         static float previousKey = key;
@@ -48 +53 @@
         //Clamp(delta, -maxChange, maxChange);
 
-        const float factor = 0.5f;
+        const float factor = 1.0f;
 
-        const float imageKey = key * factor + previousKey * (1.0f - factor);
+        const float imageKey = key;// * factor + previousKey * (1.0f - factor);
         previousKey = imageKey;
         
+        cout << "key: " << key << endl;
+
         delete [] pixels;
 

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/chcdemo.cpp

@@ -828 +828 @@
         Vector3 sunDiffuse;
 
-        Vector3 h;
-
-        h.x = lightDir.x;
-        h.y = lightDir.z;
-        h.z = lightDir.y;
-
-
         preetham->ComputeSunColor(lightDir, sunAmbient, sunDiffuse);
 
@@ -844 +837 @@
         ambient[2] = sunAmbient.z;
 
-        sunDiffuse /= maxComponent;
+        //sunDiffuse /= maxComponent;
 
         diffuse[0] = sunDiffuse.x;
@@ -1575 +1568 @@
         lightDir = roty * lightDir;
         lightDir = rotx * lightDir;
+
+        // normalize to avoid accumulating errors
+        lightDir.Normalize();
 
         light->SetDirection(lightDir);

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaderenv.h

@@ -35 +35 @@
 //-- tone mapping
 
+//#define MIDDLE_GRAY 0.72f
 //#define MIDDLE_GRAY 0.36f
 #define MIDDLE_GRAY 0.18f

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/antialiasing.cg

@@ +1 @@
+#include "../shaderenv.h"
+
 struct v2p
 {
@@ -18 +20 @@
 
 
+
+float3 ToneMap(const float imageKey, float3 color)
+{
+        float3 outCol;
+        const float pixLum = 0.2125f * color.x + 0.7154f * color.y + 0.0721f * color.z;
+        
+        // adjust to middle gray
+        const float lum = MIDDLE_GRAY * pixLum / imageKey;
+         
+    // map to range
+        const float scaledLum = lum / (1.0f + lum);
+
+    /*outCol *= MIDDLE_GRAY / (vLum + 1e-3f);
+    outCol *= (1.0f + vColor / LUM_WHITE);
+        outCol /= (1.0f + vColor);*/
+        
+        outCol = color * scaledLum;
+        //vColor.rgb += 0.6f * vBloom;
+        
+        return outCol;
+}
+
 float4 main(v2p IN, 
                         uniform sampler2D colors,
-                        uniform sampler2D normals
+                        uniform sampler2D normals,
+                        uniform float imageKey
                         ): COLOR
 {
@@ -86 +111 @@
         float4 sc = tex2Dlod(colors, float4(IN.c.xy, 0, 0));
 
-        return (s0 + s1 + s2 + s3 + sc) * 0.2f;
+        float4 col = (s0 + s1 + s2 + s3 + sc) * 0.2f;
         //return (s0 + s1 + s2 + s3) * 0.25f;
+
         //return float4(w);
+        col.xyz = ToneMap(imageKey, col.xyz);
+
+        return col;
 }

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/deferred.cg

@@ -15 +15 @@
         float4 color: COLOR0;
 };
-
-
-
-float3 ToneMap(const float imageKey, float3 color)
-{
-        float3 outCol;
-        const float pixLum = 0.2125f * color.x + 0.7154f * color.y + 0.0721f * color.z;
-        
-        // adjust to middle gray
-        const float lum = MIDDLE_GRAY * pixLum / imageKey;
-         
-    // map to range
-        const float scaledLum = lum / (1.0f + lum);
-
-    /*outCol *= MIDDLE_GRAY / (vLum + 1e-3f);
-    outCol *= (1.0f + vColor / LUM_WHITE);
-        outCol /= (1.0f + vColor);*/
-        
-        outCol = color / scaledLum;
-        //vColor.rgb += 0.6f * vBloom;
-        
-        return outCol;
-}
 
 
@@ -74 +51 @@
         const float4 ambient = glstate.light[0].ambient;
         
+        return (emmisive < 0.95) ? (ambient + diffuse) * color : color;
+
         //return (saturate(((ambient + diffuse))) * (1.0f - emmisive) + emmisive) * color;
-        return saturate((((ambient + diffuse)) * (1.0f - emmisive) + emmisive) * color);
+        //return saturate((((ambient + diffuse)) * (1.0f - emmisive) + emmisive) * color);
 }
 
@@ -86 +65 @@
                    uniform sampler2D positions,
                    uniform sampler2D normals,
-                   uniform float3 lightDir,
-                   uniform float imageKey
+                   uniform float3 lightDir
                    )
 {
@@ -161 +139 @@
                                   uniform sampler2D noiseTexture,
                                   uniform float2 samples[NUM_PCF_TABS],
-                                  uniform float3 lightDir,
-                                  uniform float imageKey
+                                  uniform float3 lightDir
                                   )
 {
@@ -207 +184 @@
         OUT.color = (emmisive < 0.95) ? (ambient + diffuse) * color : color;
 
-        OUT.color.xyz = ToneMap(imageKey, OUT.color.xyz);
-
         // also write out depth component
         OUT.color.w = color.w;

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/sky_preetham.cg

@@ -92 +92 @@
         OUT.color = float4(hcol, 1.0);
 
-        OUT.color.rgb *= 5e-5f; 
+        //OUT.color.rgb *= 1e-2f; 
+        //OUT.color.rgb *= 2e-5f; 
 
         //OUT.worldPos = mul(glstate.matrix.inverse.projection, OUT.position);