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i965: Document inconsistent units the URB size is represented in. 

Every other gen the representation of the URB size was changed and
previous ones weren't updated.  I'd be willing to write a series
normalizing this to be KB on all generations if anybody else cares.
This commit is contained in:
Francisco Jerez 2015-11-25 14:51:16 +02:00
parent 228d5a3f75
commit 3dc97a1586
2 changed files with 12 additions and 1 deletions
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8
src/mesa/drivers/dri/i965/brw_context.h
View File

@ -1026,7 +1026,13 @@ struct brw_context
GLuint clip_start;
GLuint sf_start;
GLuint cs_start;
GLuint size; /* Hardware URB size, in KB. */
/**
* URB size in the current configuration. The units this is expressed
* in are somewhat inconsistent, see brw_device_info::urb::size.
*
* FINISHME: Represent the URB size consistently in KB on all platforms.
*/
GLuint size;
/* True if the most recently sent _3DSTATE_URB message allocated
* URB space for the GS.

5
src/mesa/drivers/dri/i965/brw_device_info.h
View File

@ -81,6 +81,11 @@ struct brw_device_info
unsigned max_cs_threads;
struct {
/**
* Hardware default URB size. The units this is expressed in are
* somewhat inconsistent: 512b units on Gen4-5, KB on Gen6-7, and KB
* times the slice count on Gen8+.
*/
unsigned size;
unsigned min_vs_entries;
unsigned max_vs_entries;