diff options
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_draw.c')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_draw.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/gallium/drivers/vc4/vc4_draw.c b/src/gallium/drivers/vc4/vc4_draw.c index 6fd25b45b98..fd80f67b6a1 100644 --- a/src/gallium/drivers/vc4/vc4_draw.c +++ b/src/gallium/drivers/vc4/vc4_draw.c @@ -377,7 +377,21 @@ vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info) struct vc4_resource *rsc = vc4_resource(prsc); struct vc4_cl_out *bcl = cl_start(&job->bcl); - cl_start_reloc(&job->bcl, &bcl, 1); + + /* The original design for the VC4 kernel UABI had multiple + * packets that used relocations in the BCL (some of which + * needed two BOs), but later modifications eliminated all but + * this one usage. We have an arbitrary 32-bit offset value, + * and need to also supply an arbitrary 32-bit index buffer + * GEM handle, so we have this fake packet we emit in our BCL + * to be validated, which the kernel uses at validation time + * to perform the relocation in the IB packet (without + * emitting to the actual HW). + */ + cl_u8(&bcl, VC4_PACKET_GEM_HANDLES); + cl_u32(&bcl, vc4_gem_hindex(job, rsc->bo)); + cl_u32(&bcl, 0); + cl_u8(&bcl, VC4_PACKET_GL_INDEXED_PRIMITIVE); cl_u8(&bcl, info->mode | @@ -385,8 +399,9 @@ vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info) VC4_INDEX_BUFFER_U16: VC4_INDEX_BUFFER_U8)); cl_u32(&bcl, info->count); - cl_reloc(job, &job->bcl, &bcl, rsc->bo, offset); + cl_u32(&bcl, offset); cl_u32(&bcl, vc4->max_index); + cl_end(&job->bcl, bcl); job->draw_calls_queued++; |