Changeset 2880 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/SsaoShader.cpp

Timestamp:

08/28/08 22:37:40 (16 years ago)

Author:

mattausch

Message:

downsampling not working yet

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/SsaoShader.cpp (modified) (14 diffs)

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

@@ -23 +23 @@
 static CGprogram sCgDeferredProgram = NULL;
 static CGprogram sCgAntiAliasingProgram = NULL;
-static CGprogram sCgCombineProgram = NULL;
 
 static CGparameter sColorsTexCombineParam;
@@ -32 +31 @@
 static CGparameter sNormalsTexDeferredParam;
 
+
+static CGprogram sCgCombinedSsaoProgram = NULL;
+static CGprogram sCgCombinedIllumProgram = NULL;
 
 ///////////////////////////////////////7
@@ -67 +69 @@
 
 
+static CGparameter sColorsTexCombinedIllumParam;
+static CGparameter sSsaoTexCombinedIllumParam;
+static CGparameter sIllumTexCombinedIllumParam;
+
+static CGparameter sColorsTexCombinedSsaoParam;
+static CGparameter sSsaoTexCombinedSsaoParam;
+
+
 ////////////
 
@@ -157 +167 @@
         //-- the flip-flop fbos
 
+        w = 256; h = 256;
         mNewFbo = new FrameBufferObject(w, h, FrameBufferObject::DEPTH_NONE);
+        
         mNewFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
         mNewFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
-        mNewFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
         
         mOldFbo = new FrameBufferObject(w, h, FrameBufferObject::DEPTH_NONE);
-        mOldFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
+        
         mOldFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
         mOldFbo->AddColorBuffer(ColorBufferObject::BUFFER_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR, false);
@@ -299 +310 @@
                 cerr << "globillum program failed to load" << endl;
 
+        sCgCombinedIllumProgram = 
+                cgCreateProgramFromFile(context, 
+                                                                CG_SOURCE,
+                                                                "src/shaders/globillum.cg", 
+                                                                RenderState::sCgFragmentProfile,
+                                                                "combine",
+                                                                NULL);
+
+        if (sCgCombinedIllumProgram != NULL)
+        {
+                cgGLLoadProgram(sCgCombinedIllumProgram);
+
+                sColorsTexCombinedIllumParam = cgGetNamedParameter(sCgCombinedIllumProgram, "colors");  
+                sSsaoTexCombinedIllumParam = cgGetNamedParameter(sCgCombinedIllumProgram, "ssaoTex");
+                sIllumTexCombinedIllumParam = cgGetNamedParameter(sCgCombinedIllumProgram, "illumTex");
+        }
+        else
+                cerr << "combined illum program failed to load" << endl;
+
+
+        sCgCombinedSsaoProgram = 
+                cgCreateProgramFromFile(context, 
+                                                                CG_SOURCE,
+                                                                "src/shaders/ssao.cg", 
+                                                                RenderState::sCgFragmentProfile,
+                                                                "combine",
+                                                                NULL);
+
+        if (sCgCombinedSsaoProgram != NULL)
+        {
+                cgGLLoadProgram(sCgCombinedSsaoProgram);
+
+                sColorsTexCombinedSsaoParam = cgGetNamedParameter(sCgCombinedSsaoProgram, "colors");  
+                sSsaoTexCombinedSsaoParam = cgGetNamedParameter(sCgCombinedSsaoProgram, "ssaoTex");
+        }
+        else
+                cerr << "combied illum program failed to load" << endl;
+
+        
         sCgAntiAliasingProgram = 
                 cgCreateProgramFromFile(context, 
@@ -317 +367 @@
                 cerr << "antialiasing program failed to load" << endl;
 
-
         PrintGLerror("init");
 }
@@ -333 +382 @@
         swap(mNewFbo, mOldFbo); 
 
-
-        glPushAttrib(GL_VIEWPORT_BIT);
-        glViewport(0, 0, mWidth, mHeight);
-
         FrameBufferObject::Release();
 
@@ -345 +390 @@
         glDisable(GL_LIGHTING);
 
+        glPushAttrib(GL_VIEWPORT_BIT);
+        glViewport(0, 0, mWidth, mHeight);
+
         glMatrixMode(GL_PROJECTION);
         glPushMatrix();
@@ -359 +407 @@
         
         if (!mUseGlobIllum)
+        {
                 ComputeSsao(fbo, expFactor, oldProjViewMatrix);
+                CombineSsao(fbo);
+        }
         else
+        {
                 ComputeGlobIllum(fbo, expFactor, oldProjViewMatrix);
-
+                CombineIllum(fbo);
+        }
         AntiAliasing(fbo);
 
@@ -402 +455 @@
         // read the second buffer, write to the first buffer
         mNewFbo->Bind();
-        glDrawBuffers(2, mymrt);
+        glDrawBuffers(1, mymrt);
+
+        glPushAttrib(GL_VIEWPORT_BIT);
+        glViewport(0, 0, 256, 256);
+
+        glMatrixMode(GL_PROJECTION);
+        glPushMatrix();
+        glLoadIdentity();
+
+        glMatrixMode(GL_MODELVIEW);
+        glPushMatrix();
+        glLoadIdentity();
+
+        const float offs = 0.5f;
+        glOrtho(-offs, offs, -offs, offs, 0, 1);
+
 
         GLuint oldTex = mOldFbo->GetColorBuffer(0)->GetTexture();
@@ -469 +537 @@
         cgGLDisableTextureParameter(sOldTexParam);
 
+        glMatrixMode(GL_PROJECTION);
+        glPopMatrix();
+
+        glMatrixMode(GL_MODELVIEW);
+        glPopMatrix();
+
+        glPopAttrib();
+
         FrameBufferObject::Release();
 
@@ -523 +599 @@
 void SsaoShader::AntiAliasing(FrameBufferObject *fbo)
 {
-        GLuint colorsTex = mNewFbo->GetColorBuffer(1)->GetTexture();
+        //GLuint colorsTex = mNewFbo->GetColorBuffer(1)->GetTexture();
+        GLuint colorsTex = fbo->GetColorBuffer(0)->GetTexture();
         GLuint normalsTex = fbo->GetColorBuffer(2)->GetTexture();
         
@@ -637 +714 @@
         // read the second buffer, write to the first buffer
         mNewFbo->Bind();
-        glDrawBuffers(3, mymrt);
+        glDrawBuffers(2, mymrt);
 
         GLuint oldSsaoTex = mOldFbo->GetColorBuffer(0)->GetTexture();
-        GLuint oldIllumTex = mOldFbo->GetColorBuffer(2)->GetTexture();
+        GLuint oldIllumTex = mOldFbo->GetColorBuffer(1)->GetTexture();
 
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -716 +793 @@
 
 
+void SsaoShader::CombineIllum(FrameBufferObject *fbo)
+{
+        GLuint colorsTex = fbo->GetColorBuffer(3)->GetTexture();
+        GLuint ssaoTex = mNewFbo->GetColorBuffer(0)->GetTexture();
+        GLuint illumTex = mNewFbo->GetColorBuffer(1)->GetTexture();
+
+        //
+        fbo->Bind();
+
+        // write into old color texture (not needed anymore)
+        glDrawBuffers(1, mymrt);
+
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        
+        cgGLEnableProfile(RenderState::sCgFragmentProfile);
+
+        cgGLBindProgram(sCgCombinedIllumProgram);
+
+        cgGLSetTextureParameter(sColorsTexCombinedIllumParam, colorsTex);
+        cgGLEnableTextureParameter(sColorsTexCombinedIllumParam);
+
+        cgGLSetTextureParameter(sSsaoTexCombinedIllumParam, ssaoTex);
+        cgGLEnableTextureParameter(sSsaoTexCombinedIllumParam);
+
+        cgGLSetTextureParameter(sIllumTexCombinedIllumParam, illumTex);
+        cgGLEnableTextureParameter(sIllumTexCombinedIllumParam);
+        
+        glColor3f(1.0f, 1.0f, 1.0f);
+
+        const float offs = 0.5f;
+
+        glBegin(GL_QUADS);
+
+        glTexCoord2f(0, 0); glVertex3f(-offs, -offs, -0.5f);
+        glTexCoord2f(1, 0); glVertex3f( offs, -offs, -0.5f);
+        glTexCoord2f(1, 1); glVertex3f( offs,  offs, -0.5f);
+        glTexCoord2f(0, 1); glVertex3f(-offs,  offs, -0.5f);
+
+        glEnd();
+
+        cgGLDisableTextureParameter(sColorsTexCombinedIllumParam);
+        cgGLDisableTextureParameter(sSsaoTexCombinedIllumParam);
+        cgGLDisableTextureParameter(sIllumTexCombinedIllumParam);
+
+        cgGLDisableProfile(RenderState::sCgFragmentProfile);
+
+        FrameBufferObject::Release();
+
+        PrintGLerror("combine");
+}
+
+
+void SsaoShader::CombineSsao(FrameBufferObject *fbo)
+{
+        GLuint colorsTex = fbo->GetColorBuffer(3)->GetTexture();
+        GLuint ssaoTex = mNewFbo->GetColorBuffer(0)->GetTexture();
+
+        //
+        fbo->Bind();
+
+        // write into old color texture (not needed anymore)
+        glDrawBuffers(1, mymrt);
+
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        
+        cgGLEnableProfile(RenderState::sCgFragmentProfile);
+
+        cgGLBindProgram(sCgCombinedSsaoProgram);
+
+        cgGLSetTextureParameter(sColorsTexCombinedSsaoParam, colorsTex);
+        cgGLEnableTextureParameter(sColorsTexCombinedSsaoParam);
+
+        cgGLSetTextureParameter(sSsaoTexCombinedSsaoParam, ssaoTex);
+        cgGLEnableTextureParameter(sSsaoTexCombinedSsaoParam);
+
+        
+        glColor3f(1.0f, 1.0f, 1.0f);
+
+        const float offs = 0.5f;
+
+        glBegin(GL_QUADS);
+
+        glTexCoord2f(0, 0); glVertex3f(-offs, -offs, -0.5f);
+        glTexCoord2f(1, 0); glVertex3f( offs, -offs, -0.5f);
+        glTexCoord2f(1, 1); glVertex3f( offs,  offs, -0.5f);
+        glTexCoord2f(0, 1); glVertex3f(-offs,  offs, -0.5f);
+
+        glEnd();
+
+        cgGLDisableTextureParameter(sColorsTexCombinedSsaoParam);
+        cgGLDisableTextureParameter(sSsaoTexCombinedSsaoParam);
+
+        cgGLDisableProfile(RenderState::sCgFragmentProfile);
+
+        FrameBufferObject::Release();
+
+        PrintGLerror("combine ssao");
+}
+
+
+
 } // namespace