1 2 Mesa 4.0 release notes 3 4 October 18, 2001 5 6 PLEASE READ!!!! 7 8 9 10 Introduction 11 ------------ 12 13 Mesa uses an even/odd version number scheme like the Linux kernel. 14 Odd numbered versions (such as 3.3) designate new developmental releases. 15 Even numbered versions (such as 3.4) designate stable releases. 16 17 Mesa version 4.0 signifies two things: 18 19 1. A stabilization of the 3.5 development release 20 2. Implementation of the OpenGL 1.3 specification 21 22 23 Note that the Mesa major version number is incremented with the OpenGL 24 minor version number: 25 26 Mesa 1.x == OpenGL 1.0 27 Mesa 2.x == OpenGL 1.1 28 Mesa 3.x == OpenGL 1.2 29 Mesa 4.x == OpenGL 1.3 30 31 32 33 New Features 34 ------------ 35 36 Mesa 3.5 already had all the new features of OpenGL 1.3, implemented as 37 extensions. These extensions were simply promoted to standard features: 38 39 GL_ARB_multisample 40 GL_ARB_multitexture 41 GL_ARB_texture_border_clamp 42 GL_ARB_texture_compression 43 GL_ARB_texture_cube_map 44 GL_ARB_texture_env_add 45 GL_ARB_texture_env_combine 46 GL_ARB_texture_env_dot3 47 GL_ARB_transpose_matrix 48 49 In Mesa 4.0 the functions defined by these extensions are now available 50 without the "ARB" suffix. For example, glLoadTransposeMatrixf() is now 51 a standard API function. The new functions in OpenGL 1.3 and Mesa 4.0 are: 52 53 glActiveTexture 54 glClientActiveTexture 55 glCompressedTexImage1D 56 glCompressedTexImage2D 57 glCompressedTexImage3D 58 glCompressedTexSubImage1D 59 glCompressedTexSubImage2D 60 glCompressedTexSubImage3D 61 glGetCompressedTexImage 62 glLoadTransposeMatrixd 63 glLoadTransposeMatrixf 64 glMultiTexCoord1d 65 glMultiTexCoord1dv 66 glMultiTexCoord1f 67 glMultiTexCoord1fv 68 glMultiTexCoord1i 69 glMultiTexCoord1iv 70 glMultiTexCoord1s 71 glMultiTexCoord1sv 72 glMultiTexCoord2d 73 glMultiTexCoord2dv 74 glMultiTexCoord2f 75 glMultiTexCoord2fv 76 glMultiTexCoord2i 77 glMultiTexCoord2iv 78 glMultiTexCoord2s 79 glMultiTexCoord2sv 80 glMultiTexCoord3d 81 glMultiTexCoord3dv 82 glMultiTexCoord3f 83 glMultiTexCoord3fv 84 glMultiTexCoord3i 85 glMultiTexCoord3iv 86 glMultiTexCoord3s 87 glMultiTexCoord3sv 88 glMultiTexCoord4d 89 glMultiTexCoord4dv 90 glMultiTexCoord4f 91 glMultiTexCoord4fv 92 glMultiTexCoord4i 93 glMultiTexCoord4iv 94 glMultiTexCoord4s 95 glMultiTexCoord4sv 96 glMultTransposeMatrixd 97 glMultTransposeMatrixf 98 glSampleCoverage 99 glSamplePass 100 101 102 GLX 1.4 is the companion to OpenGL 1.3. The only new features in GLX 1.4 103 are support for multisampling and the GLX_ARB_get_proc_address extension. 104 glXGetProcAddress() is the only new function in GLX 1.4. 105 106 107 108 Multisample and Texture Compression 109 ----------------------------------- 110 111 The OpenGL 1.3 specification allows the multisample and texture compression 112 features to essentially be no-ops. For example, if you query for multisample 113 support you'll find none, but the API functions work. 114 115 Similarly, texture compression is not implemented by any of the software 116 drivers but you can specify a generic compressed texture format (like 117 GL_COMPRESSED_RGBA) to glTexImage2D and it'll be accepted. 118 119 120 121 Device Drivers 122 -------------- 123 124 Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the 125 device driver. If the driver enables all the ARB extensions which are part 126 of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise, 127 it'll return "1.2". 128 129 A number of Mesa's software drivers haven't been actively maintained for 130 some time. We rely on volunteers to maintain many of the drivers. 131 Here's the current status of all included drivers: 132 133 134 Driver Status 135 ---------------------- --------------------- 136 XMesa (Xlib) implements OpenGL 1.3 137 OSMesa (off-screen) implements OpenGL 1.3 138 FX (3dfx Voodoo1/2) implements OpenGL 1.3 139 SVGA implements OpenGL 1.3 140 Wind River UGL implements OpenGL 1.3 141 Windows/Win32 implements OpenGL 1.3 142 GGI needs updating 143 DOS/DJGPP needs updating 144 BeOS needs updating 145 Allegro needs updating 146 D3D needs updating 147 DOS needs updating 148 149 Special thanks go to Karl Schultz for updating the Windows driver. 150 151 The XFree86/DRI drivers have not yet been updated to use Mesa 4.0 as of 152 September 2001, but that should happen eventually. 153 154 155 156 Other Changes 157 ------------- 158 159 See the VERSIONS file for more details about bug fixes, etc. in Mesa 4.0. 160 161 162 ---------------------------------------------------------------------- 163
