diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.h | 21 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_misc_state.c | 3 |
2 files changed, 23 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index f3312360213..4b4dfbafb1a 100644 --- a/src/mesa/drivers/dri/i965/brw_context.h +++ b/src/mesa/drivers/dri/i965/brw_context.h @@ -139,7 +139,7 @@ struct brw_context; * by any 3D rendering. */ #define BRW_NEW_BATCH 0x10000 -/** brw->depth_region updated */ +/** \see brw.state.depth_region */ #define BRW_NEW_DEPTH_BUFFER 0x20000 #define BRW_NEW_NR_WM_SURFACES 0x40000 #define BRW_NEW_NR_VS_SURFACES 0x80000 @@ -464,8 +464,27 @@ struct brw_context struct { struct brw_state_flags dirty; + /** + * \name Cached region pointers + * + * When the draw buffer is updated, often the depth buffer is not + * changed. Caching the pointer to the buffer's region allows us to + * detect when the buffer has in fact changed, and allows us to avoid + * updating the buffer's GPU state when it has not. + * + * The original of each cached pointer is an instance of + * \c intel_renderbuffer.region. + * + * \see brw_set_draw_region() + * + * \{ + */ + + /** \see struct brw_tracked_state brw_depthbuffer */ struct intel_region *depth_region; + /** \} */ + /** * List of buffers accumulated in brw_validate_state to receive * drm_intel_bo_check_aperture treatment before exec, so we can diff --git a/src/mesa/drivers/dri/i965/brw_misc_state.c b/src/mesa/drivers/dri/i965/brw_misc_state.c index 92eba8fe173..74e911b4ddb 100644 --- a/src/mesa/drivers/dri/i965/brw_misc_state.c +++ b/src/mesa/drivers/dri/i965/brw_misc_state.c @@ -284,6 +284,9 @@ static void emit_depthbuffer(struct brw_context *brw) } } +/** + * \see brw_context.state.depth_region + */ const struct brw_tracked_state brw_depthbuffer = { .dirty = { .mesa = 0, |