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<HTML>
<TITLE>Mesa Release Notes</TITLE>
<head><link rel="stylesheet" type="text/css" href="mesa.css"></head>
<BODY>
<body bgcolor="#eeeeee">
<H1>Mesa 6.5.3 Release Notes / April ??, 2007</H1>
<p>
Mesa 6.5.3 is a development release with many changes and new features.
Mesa 7.0 is expected to follow shortly.
</p>
<h2>MD5 checksums</h2>
<pre>
TBD
</pre>
<h2>New features</h2>
<ul>
<li>OpenGL 2.0 and 2.1 API support.
<li>Entirely new Shading Language code generator. See the
<a href="shading.html">Shading Language</a> page for more information.
<li>Much faster software execution of vertex, fragment shaders.
<li>New vertex buffer object (vbo) infrastructure
<li>Updated glext.h file (version 39)
<li>Updated glxext.h file (version 18)
<li>GL_MAX_DRAWBUFFERS is now 4 (software rendering) so
"multiple render targets" are really supported.
</ul>
<h2>Bug fixes</h2>
<ul>
<li>Fog was errantly applied when a fragment shader was enabled (bug 9346)
<li>glPush/PopClientAttrib didn't handle VBO bindings correctly (bug 9445)
<li>With 32-bit Z buffer, the fragment Z of lines and points was sometimes wrong.
<li>GL_POST_CONVOLUTION_ALPHA_BIAS/SCALE was broken.
<li>1D convolution state could effect 2D image transfers
<li>Overlapping glCopyPixels with negative Y zoom didn't work (bug 10521)
<li>Fixed a number of framebuffer/renderbuffer reference counting bugs
<li>Fixed a few bugs in software-emulated alpha planes
<li>Assorted minor bug fixes in glCopy/DrawPixels, glPixelZoom, etc.
<li>Assorted DRI driver bug fixes.
</ul>
<h2>Internal code changes</h2>
<ul>
<li>Old array_cache module replaced by new vbo module. All geometry
rendering is now cast in the form of vertex buffer objects.
<li>Massive changes to the Shading Language compiler and related state.
<li>Vertex/fragment shaders are compiled into GPU instructions and
programs very similar to GL_ARB_vertex/fragment_program.
<li>Vertex and fragment programs are executed with the same code now.
<li>The SSE-optimized vertex program path has been removed since it didn't
support more than 12 temp registers, didn't support branching/looping, etc.
</ul>
<h2>To Do (someday) items</h2>
<ul>
<li>Switch to freeglut
<li>Fix linux-glide target/driver.
<li>Improved lambda and derivative calculation for frag progs.
</ul>
<h2>Driver Status</h2>
<pre>
Driver Status
---------------------- ----------------------
DRI drivers varies with the driver
XMesa/GLX (on Xlib) implements OpenGL 2.1
OSMesa (off-screen) implements OpenGL 2.1
Windows/Win32 implements OpenGL 1.5
Glide (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA unsupported
Wind River UGL unsupported
DJGPP unsupported
GGI unsupported
BeOS unsupported
Allegro unsupported
D3D unsupported
</pre>
</body>
</html>
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