Changeset 2862 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/FrameBufferObject.cpp

Timestamp:

08/22/08 17:51:54 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/FrameBufferObject.cpp (modified) (5 diffs)

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

@@ -77 +77 @@
         glGenTextures(1, &mTexId);
         glBindTexture(GL_TEXTURE_2D, mTexId);
-        //glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, w, h, 0, GL_RGBA, glformat, NULL);
         glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, w, h, 0, GL_RGBA, glformat, NULL);
+
         glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, color_attachment[attachment_idx], GL_TEXTURE_2D, mTexId, 0);
 
@@ -118 +118 @@
 
 
-FrameBufferObject::FrameBufferObject(int w, int h, DEPTH_FORMAT d)
-: mWidth(w), mHeight(h)
+FrameBufferObject::FrameBufferObject(int w, int h, DEPTH_FORMAT d, bool useDepthTex)
+: mWidth(w), mHeight(h), mDepthTexId(0)
 {
         glGenFramebuffersEXT(1, &mId);
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
+        
+        Bind();
 
         cout << "creating fbo" << endl;
@@ -152 +153 @@
                 glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, depthFormat, mWidth, mHeight);
                 glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepthId);
-        }
+
+                if (useDepthTex)
+                {
+                        //cout << "adding depth texture" << endl;
+
+                        glGenTextures(1, &mDepthTexId);
+                        glBindTexture(GL_TEXTURE_2D, mDepthTexId);
+
+                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                        
+                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                        glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+                        glTexImage2D(GL_TEXTURE_2D, 0, depthFormat, w, h, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
+
+                        glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, mDepthTexId, 0);
+                }
+        }
+
+        Release();
 }
 
@@ -164 +186 @@
         cout << "adding color buffer" << endl;
 
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
+        Bind();
 
         int idx = (int)mColorBuffers.size();
@@ -172 +194 @@
         mColorBuffers.push_back(colorBuf);
 
+        Release();
+
+        return idx;
+}
+
+
+void FrameBufferObject::Bind() const
+{
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
+}
+
+
+void FrameBufferObject::Release()
+{
         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-
-        return idx;
-}
-
-
-void FrameBufferObject::Bind() const
-{
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
-}
-
-
-void FrameBufferObject::Release()
-{
-        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
 }