163 lines
4.3 KiB
Plaintext
163 lines
4.3 KiB
Plaintext
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Mesa 4.0 release notes
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October 18, 2001
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PLEASE READ!!!!
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Introduction
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------------
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Mesa uses an even/odd version number scheme like the Linux kernel.
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Odd numbered versions (such as 3.3) designate new developmental releases.
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Even numbered versions (such as 3.4) designate stable releases.
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Mesa version 4.0 signifies two things:
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1. A stabilization of the 3.5 development release
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2. Implementation of the OpenGL 1.3 specification
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Note that the Mesa major version number is incremented with the OpenGL
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minor version number:
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Mesa 1.x == OpenGL 1.0
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Mesa 2.x == OpenGL 1.1
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Mesa 3.x == OpenGL 1.2
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Mesa 4.x == OpenGL 1.3
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New Features
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------------
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Mesa 3.5 already had all the new features of OpenGL 1.3, implemented as
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extensions. These extensions were simply promoted to standard features:
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GL_ARB_multisample
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GL_ARB_multitexture
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GL_ARB_texture_border_clamp
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GL_ARB_texture_compression
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GL_ARB_texture_cube_map
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GL_ARB_texture_env_add
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GL_ARB_texture_env_combine
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GL_ARB_texture_env_dot3
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GL_ARB_transpose_matrix
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In Mesa 4.0 the functions defined by these extensions are now available
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without the "ARB" suffix. For example, glLoadTransposeMatrixf() is now
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a standard API function. The new functions in OpenGL 1.3 and Mesa 4.0 are:
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glActiveTexture
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glClientActiveTexture
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glCompressedTexImage1D
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glCompressedTexImage2D
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glCompressedTexImage3D
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glCompressedTexSubImage1D
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glCompressedTexSubImage2D
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glCompressedTexSubImage3D
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glGetCompressedTexImage
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glLoadTransposeMatrixd
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glLoadTransposeMatrixf
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glMultiTexCoord1d
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glMultiTexCoord1dv
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glMultiTexCoord1f
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glMultiTexCoord1fv
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glMultiTexCoord1i
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glMultiTexCoord1iv
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glMultiTexCoord1s
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glMultiTexCoord1sv
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glMultiTexCoord2d
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glMultiTexCoord2dv
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glMultiTexCoord2f
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glMultiTexCoord2fv
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glMultiTexCoord2i
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glMultiTexCoord2iv
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glMultiTexCoord2s
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glMultiTexCoord2sv
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glMultiTexCoord3d
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glMultiTexCoord3dv
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glMultiTexCoord3f
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glMultiTexCoord3fv
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glMultiTexCoord3i
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glMultiTexCoord3iv
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glMultiTexCoord3s
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glMultiTexCoord3sv
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glMultiTexCoord4d
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glMultiTexCoord4dv
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glMultiTexCoord4f
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glMultiTexCoord4fv
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glMultiTexCoord4i
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glMultiTexCoord4iv
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glMultiTexCoord4s
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glMultiTexCoord4sv
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glMultTransposeMatrixd
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glMultTransposeMatrixf
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glSampleCoverage
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glSamplePass
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GLX 1.4 is the companion to OpenGL 1.3. The only new features in GLX 1.4
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are support for multisampling and the GLX_ARB_get_proc_address extension.
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glXGetProcAddress() is the only new function in GLX 1.4.
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Multisample and Texture Compression
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-----------------------------------
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The OpenGL 1.3 specification allows the multisample and texture compression
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features to essentially be no-ops. For example, if you query for multisample
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support you'll find none, but the API functions work.
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Similarly, texture compression is not implemented by any of the software
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drivers but you can specify a generic compressed texture format (like
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GL_COMPRESSED_RGBA) to glTexImage2D and it'll be accepted.
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Device Drivers
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--------------
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Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the
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device driver. If the driver enables all the ARB extensions which are part
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of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise,
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it'll return "1.2".
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A number of Mesa's software drivers haven't been actively maintained for
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some time. We rely on volunteers to maintain many of the drivers.
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Here's the current status of all included drivers:
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Driver Status
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---------------------- ---------------------
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XMesa (Xlib) implements OpenGL 1.3
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OSMesa (off-screen) implements OpenGL 1.3
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FX (3dfx Voodoo1/2) implements OpenGL 1.3
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SVGA implements OpenGL 1.3
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Wind River UGL implements OpenGL 1.3
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Windows/Win32 implements OpenGL 1.3
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GGI needs updating
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DOS/DJGPP needs updating
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BeOS needs updating
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Allegro needs updating
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D3D needs updating
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DOS needs updating
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Special thanks go to Karl Schultz for updating the Windows driver.
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The XFree86/DRI drivers have not yet been updated to use Mesa 4.0 as of
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September 2001, but that should happen eventually.
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Other Changes
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-------------
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See the VERSIONS file for more details about bug fixes, etc. in Mesa 4.0.
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----------------------------------------------------------------------
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