0,0 → 1,162 |
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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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Mesa uses an even/odd version number scheme like the Linux kernel. |
Odd numbered versions (such as 3.3) designate new developmental releases. |
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 |
2. Implementation of the OpenGL 1.3 specification |
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Note that the Mesa major version number is incremented with the OpenGL |
minor version number: |
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Mesa 1.x == OpenGL 1.0 |
Mesa 2.x == OpenGL 1.1 |
Mesa 3.x == OpenGL 1.2 |
Mesa 4.x == OpenGL 1.3 |
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New Features |
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Mesa 3.5 already had all the new features of OpenGL 1.3, implemented as |
extensions. These extensions were simply promoted to standard features: |
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GL_ARB_multisample |
GL_ARB_multitexture |
GL_ARB_texture_border_clamp |
GL_ARB_texture_compression |
GL_ARB_texture_cube_map |
GL_ARB_texture_env_add |
GL_ARB_texture_env_combine |
GL_ARB_texture_env_dot3 |
GL_ARB_transpose_matrix |
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In Mesa 4.0 the functions defined by these extensions are now available |
without the "ARB" suffix. For example, glLoadTransposeMatrixf() is now |
a standard API function. The new functions in OpenGL 1.3 and Mesa 4.0 are: |
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glActiveTexture |
glClientActiveTexture |
glCompressedTexImage1D |
glCompressedTexImage2D |
glCompressedTexImage3D |
glCompressedTexSubImage1D |
glCompressedTexSubImage2D |
glCompressedTexSubImage3D |
glGetCompressedTexImage |
glLoadTransposeMatrixd |
glLoadTransposeMatrixf |
glMultiTexCoord1d |
glMultiTexCoord1dv |
glMultiTexCoord1f |
glMultiTexCoord1fv |
glMultiTexCoord1i |
glMultiTexCoord1iv |
glMultiTexCoord1s |
glMultiTexCoord1sv |
glMultiTexCoord2d |
glMultiTexCoord2dv |
glMultiTexCoord2f |
glMultiTexCoord2fv |
glMultiTexCoord2i |
glMultiTexCoord2iv |
glMultiTexCoord2s |
glMultiTexCoord2sv |
glMultiTexCoord3d |
glMultiTexCoord3dv |
glMultiTexCoord3f |
glMultiTexCoord3fv |
glMultiTexCoord3i |
glMultiTexCoord3iv |
glMultiTexCoord3s |
glMultiTexCoord3sv |
glMultiTexCoord4d |
glMultiTexCoord4dv |
glMultiTexCoord4f |
glMultiTexCoord4fv |
glMultiTexCoord4i |
glMultiTexCoord4iv |
glMultiTexCoord4s |
glMultiTexCoord4sv |
glMultTransposeMatrixd |
glMultTransposeMatrixf |
glSampleCoverage |
glSamplePass |
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GLX 1.4 is the companion to OpenGL 1.3. The only new features in GLX 1.4 |
are support for multisampling and the GLX_ARB_get_proc_address extension. |
glXGetProcAddress() is the only new function in GLX 1.4. |
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Multisample and Texture Compression |
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The OpenGL 1.3 specification allows the multisample and texture compression |
features to essentially be no-ops. For example, if you query for multisample |
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 |
drivers but you can specify a generic compressed texture format (like |
GL_COMPRESSED_RGBA) to glTexImage2D and it'll be accepted. |
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Device Drivers |
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Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the |
device driver. If the driver enables all the ARB extensions which are part |
of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise, |
it'll return "1.2". |
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A number of Mesa's software drivers haven't been actively maintained for |
some time. We rely on volunteers to maintain many of the drivers. |
Here's the current status of all included drivers: |
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Driver Status |
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XMesa (Xlib) implements OpenGL 1.3 |
OSMesa (off-screen) implements OpenGL 1.3 |
FX (3dfx Voodoo1/2) implements OpenGL 1.3 |
SVGA implements OpenGL 1.3 |
Wind River UGL implements OpenGL 1.3 |
Windows/Win32 implements OpenGL 1.3 |
GGI needs updating |
DOS/DJGPP needs updating |
BeOS needs updating |
Allegro needs updating |
D3D needs updating |
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 |
September 2001, but that should happen eventually. |
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Other Changes |
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See the VERSIONS file for more details about bug fixes, etc. in Mesa 4.0. |
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