Changeset 12179 for OpenSceneGraph/trunk/examples/osgvolume/osgvolume.cpp

Timestamp:

02/22/11 12:59:51 (2 years ago)

Author:

robert

Message:

Added support for GL_BGR and GL_BGRA pixel formats

Files:

• OpenSceneGraph/trunk/examples/osgvolume/osgvolume.cpp (modified) (3 diffs)

OpenSceneGraph/trunk/examples/osgvolume/osgvolume.cpp

@@ -138 +138 @@
             }
             break;
+        case(GL_BGR):
+            switch(dest_pixelFormat)
+            {
+            case(GL_LUMINANCE):
+            case(GL_ALPHA): BGR_to_A(num, source, dest); break;
+            case(GL_LUMINANCE_ALPHA): BGR_to_LA(num, source, dest); break;
+            case(GL_RGB): BGR_to_RGB(num, source, dest); break;
+            case(GL_RGBA): BGR_to_RGBA(num, source, dest); break;
+            }
+            break;
+        case(GL_BGRA):
+            switch(dest_pixelFormat)
+            {
+            case(GL_LUMINANCE):
+            case(GL_ALPHA): BGRA_to_A(num, source, dest); break;
+            case(GL_LUMINANCE_ALPHA): BGRA_to_LA(num, source, dest); break;
+            case(GL_RGB): BGRA_to_RGB(num, source, dest); break;
+            case(GL_RGBA): BGRA_to_RGBA(num, source, dest); break;
+            }
+            break;
         }
     }
@@ -311 +331 @@
         }
     }
+
+     ///////////////////////////////////////////////////////////////////////////////
+    // BGR sources..
+    virtual void BGR_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char val = *source;
+            *dest++ = val;
+            source += 3;
+        }
+    }
+
+    virtual void BGR_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char val = *source;
+            *dest++ = val;
+            *dest++ = val;
+            source += 3;
+        }
+    }
+
+    virtual void BGR_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char blue = *source++;
+            unsigned char green = *source++;
+            unsigned char red = *source++;
+            *dest++ = red;
+            *dest++ = green;
+            *dest++ = blue;
+        }
+    }
+
+    virtual void BGR_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char blue = *source++;
+            unsigned char green = *source++;
+            unsigned char red = *source++;
+            unsigned char val = (unsigned char)((int(red)+int(green)+int(blue))/3);
+            *dest++ = red;
+            *dest++ = green;
+            *dest++ = blue;
+            *dest++ = val;
+        }
+    }
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // BGRA sources..
+    virtual void BGRA_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            source += 3;
+            *dest++ = *source++;
+        }
+    }
+
+    virtual void BGRA_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char val = *source;
+            source += 3;
+            *dest++ = val;
+            *dest++ = *source++;
+        }
+    }
+
+    virtual void BGRA_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char blue = *source++;
+            unsigned char green = *source++;
+            unsigned char red = *source++;
+            *dest++ = red;
+            *dest++ = green;
+            *dest++ = blue;
+            ++source;
+        }
+    }
+
+    virtual void BGRA_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
+    {
+        for(unsigned int i=0;i<num;++i)
+        {
+            unsigned char blue = *source++;
+            unsigned char green = *source++;
+            unsigned char red = *source++;
+            unsigned char alpha = *source++;
+            *dest++ = red;
+            *dest++ = green;
+            *dest++ = blue;
+            *dest++ = alpha;
+        }
+    }
+
 };
 
@@ -436 +559 @@
             pixelFormat==GL_LUMINANCE_ALPHA ||
             pixelFormat==GL_RGB ||
-            pixelFormat==GL_RGBA)
+            pixelFormat==GL_RGBA ||
+            pixelFormat==GL_BGR ||
+            pixelFormat==GL_BGRA)
         {