diff options
Diffstat (limited to 'docs/MESA_agp_offset.spec')
| -rw-r--r-- | docs/MESA_agp_offset.spec | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/docs/MESA_agp_offset.spec b/docs/MESA_agp_offset.spec index 7e3d92d19bf..f85d44c528a 100644 --- a/docs/MESA_agp_offset.spec +++ b/docs/MESA_agp_offset.spec @@ -13,7 +13,8 @@ Contact Status - Shipping (Mesa 4.0.4 and later) + Shipping (Mesa 4.0.4 and later. Only implemented in particular + XFree86/DRI drivers.) Version @@ -31,8 +32,11 @@ Dependencies Overview - This extensions provides a way to convert pointers in an AGP memory region - into byte offsets into the AGP apeture. + This extensions provides a way to convert pointers in an AGP memory + region into byte offsets into the AGP aperture. + Note, this extension depends on GLX_NV_vertex_array_range, for which + no real specification exists. See GL_NV_vertex_array_range for more + information. IP Status @@ -44,7 +48,7 @@ Issues New Procedures and Functions - uint glXGetAGPOffsetMESA( const void *pointer ) + GLuint glXGetAGPOffsetMESA( const GLvoid *pointer ) New Tokens @@ -54,10 +58,22 @@ Additions to the OpenGL 1.4 Specification None -Additions to Chapter ??? the GLX 1.4 Specification (??? chapter name) +Additions to Chapter 3 the GLX 1.4 Specification (Functions and Errors) - XXX to do + Add a new section, 3.6 as follows: + 3.6 AGP Memory Access + + On "PC" computers, AGP memory can be allocated with glXAllocateMemoryNV + and freed with glXFreeMemoryNV. Sometimes it's useful to know where a + block of AGP memory is located with respect to the start of the AGP + aperature. The function + + GLuint glXGetAGPOffsetMESA( const GLvoid *pointer ) + + Returns the offset of the given memory block from the start of AGP + memory in basic machine units (i.e. bytes). If pointer is invalid + the value ~0 will be returned. GLX Protocol @@ -75,3 +91,4 @@ New State Revision History 20 September 2002 - Initial draft + 2 October 2002 - finished GLX chapter 3 additions |