265 2007-01-23 02:52:57 +0100 problem scaling TYPE_INT_ARGB, Alpha not scaling 2010-03-24 07:49:55 +0100 0 0 3 JogAmp Jogl core 1 All windows VERIFIED INVALID http://www.kyrondevelopment.com/viewer/JoglScaler.java P3 normal --- 1 sgothel sgothel DEFECT --- oldest_to_newest 281 0 sgothel 2010-03-24 07:49:55 +0100 ---- Reported by krazykatz 2007-01-23 14:52:57 ---- The following code doesn't work on one of the laptops in our office. The same problem is showing up on a workstation at one of our site's. It is fine on 6-8 other computers I've tried it on. The laptop has Window's XP and a "GeForce Go 7900 GS" card. All the code is trying to do is scale a 2D image. Scaling greyscale works fine, but when scaling TYPE_INT_ARGB all transparency is lost. For the complete source for the class check out the URL http://www.kyrondevelopment.com/viewer/JoglScaler.java // Prepare a texture w/ source gl.glTexSubImage2D( GL.GL_TEXTURE_2D, 0, 0, 0, m_src_width, m_src_height, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, src_ints ); // Map the source texture to a quad gl.glBegin( GL.GL_QUADS ); gl.glTexCoord2d( 0.0, 0.0 ); gl.glVertex2f( 0.f, 0.f ); gl.glTexCoord2d( 0.0, m_dst_height/m_scaley/PBUFFER_HEIGHT ); gl.glVertex2f( 0.f, m_dst_height ); gl.glTexCoord2d( m_dst_width/m_scalex/PBUFFER_WIDTH, m_dst_height/m_scaley/PBUFFER_HEIGHT ); gl.glVertex2f( m_dst_width, m_dst_height ); gl.glTexCoord2d( m_dst_width/m_scalex/PBUFFER_WIDTH, 0.0 ); gl.glVertex2f( m_dst_width, 0.f ); gl.glEnd(); gl.glFlush(); // Retrieve the scaled data IntBuffer scaled_buffer = BufferUtil.newIntBuffer(PBUFFER_SIZE); gl.glReadPixels( 0, 0, m_dst_width, m_dst_height, GL.GL_RGBA, GL.GL_UNSIGNED_INT_8_8_8_8_REV, scaled_buffer ); int[] dst_ints = ((DataBufferInt)m_dst.getRaster().getDataBuffer()). getData(); ---- Additional Comments From kbr 2007-01-23 15:00:18 ---- I suspect you need to call setAlphaBits(8) on the GLCapabilities you use to create your GLPbuffer. If this doesn't solve the problem then please provide a complete and self-contained test case showing the issue. I'll leave this bug open for another day or two, but I don't believe this is a JOGL bug. ---- Additional Comments From krazykatz 2007-01-24 07:43:20 ---- Thank you that seems to be it. ---- Additional Comments From kbr 2007-01-24 08:49:47 ---- Not a JOGL bug. --- Bug imported by sgothel@jausoft.com 2010-03-24 07:49 EDT --- This bug was previously known as _bug_ 265 at https://jogl.dev.java.net/bugs/show_bug.cgi?id=265