Changeset 2861 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/FrameBufferObject.cpp

Timestamp:

08/22/08 13:20:06 (16 years ago)

Author:

mattausch

Message:

cleaned up code

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/FrameBufferObject.cpp (modified) (9 diffs)

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

@@ -9 +9 @@
 {
 
+GLenum color_attachment[] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_COLOR_ATTACHMENT3_EXT};
 
 void PrintFBOStatus(GLenum status)
@@ -15 +16 @@
         {
         case GL_FRAMEBUFFER_COMPLETE_EXT:
-                cout << "frame buffer object created successfully" << endl;
+                cout << "frame buffer object complete" << endl;
                 break;
         case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
@@ -45 +46 @@
 
 ColorBufferObject::ColorBufferObject(int w, int h, 
-                                                                         FORMAT c, 
+                                                                         FORMAT format, 
                                                                          WRAP_TYPE wrapType, 
                                                                          FILTER_TYPE filterType, 
                                                                          bool useMipMap, 
-                                                                         bool useMultiSampling)
+                                                                         bool useMultiSampling,
+                                                                         int attachment_idx)
 {
+        GLuint glformat, internalFormat;
+
+
+        switch (format)
+        {
+        case BUFFER_UBYTE:
+                glformat = GL_UNSIGNED_BYTE; internalFormat = GL_RGBA8; break;
+        case BUFFER_FLOAT_16:
+                glformat = GL_FLOAT; internalFormat = GL_RGBA16F_ARB; break;
+        case BUFFER_FLOAT_32: 
+                glformat = GL_FLOAT; internalFormat = GL_RGBA32F_ARB; break;
+        default:
+                glformat = GL_UNSIGNED_BYTE; internalFormat = GL_RGBA8;
+                cerr << "should not come here" << endl;
+        }
+
         glGenRenderbuffersEXT(1, &mId);
         glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, mId);
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA8, w, h);
+        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, internalFormat, w, h);
         
-        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_RENDERBUFFER_EXT, mId);
+        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, color_attachment[attachment_idx], GL_RENDERBUFFER_EXT, mId);
 
         glGenTextures(1, &mTexId);
         glBindTexture(GL_TEXTURE_2D, mTexId);
-        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
-        glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_TEXTURE_2D, mTexId, 0);
+        //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);
 
         GLuint filterParam;
@@ -72 +91 @@
         case FILTER_MIPMAP_LINEAR: 
                 filterParam = GL_LINEAR_MIPMAP_LINEAR; break;
+        default:
+                filterParam = GL_NEAREST;
+                cerr << "should not come here" << endl;
         }
 
@@ -96 +118 @@
 
 
-FrameBufferObject::FrameBufferObject(int w, int h, bool useDepth, DEPTH_FORMAT d)
+FrameBufferObject::FrameBufferObject(int w, int h, DEPTH_FORMAT d)
 : mWidth(w), mHeight(h)
 {
@@ -102 +124 @@
         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
 
-        
+        cout << "creating fbo" << endl;
+
         ///////////
         //-- create depth buffer
 
-        if (useDepth)
+        if (d != DEPTH_NONE)
         {
                 glGenRenderbuffersEXT(1, &mDepthId);    
                 glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, mDepthId);
+
+                cout << "adding depth buffer" << endl;
 
                 GLuint depthFormat;
@@ -121 +146 @@
                 case DEPTH_32: 
                         depthFormat = GL_DEPTH_COMPONENT32; break;
+                default:        
+                        cerr << "should not come here" << endl;
                 }
 
@@ -126 +153 @@
                 glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepthId);
         }
-
-        // print status
-        PrintFBOStatus(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
 }
 
@@ -138 +162 @@
                                                                           bool useMultiSampling)
 {
+        cout << "adding color buffer" << endl;
+
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
+
+        int idx = (int)mColorBuffers.size();
         ColorBufferObject *colorBuf = 
-                new ColorBufferObject(mWidth, mHeight, col, wrapType, filterType, useMipMap, useMultiSampling);
+                new ColorBufferObject(mWidth, mHeight, col, wrapType, filterType, useMipMap, useMultiSampling, idx);
+
         mColorBuffers.push_back(colorBuf);
 
-        return (int)mColorBuffers.size() - 1;
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+
+        return idx;
+}
+
+
+void FrameBufferObject::Bind() const
+{
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mId);
+}
+
+
+void FrameBufferObject::Release()
+{
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
 }