diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen7_vs_state.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/src/mesa/drivers/dri/i965/gen7_vs_state.c b/src/mesa/drivers/dri/i965/gen7_vs_state.c index 278b3ec6d21..4b17d06fa83 100644 --- a/src/mesa/drivers/dri/i965/gen7_vs_state.c +++ b/src/mesa/drivers/dri/i965/gen7_vs_state.c @@ -43,18 +43,52 @@ gen7_upload_constant_state(struct brw_context *brw, int dwords = brw->gen >= 8 ? 11 : 7; BEGIN_BATCH(dwords); OUT_BATCH(opcode << 16 | (dwords - 2)); - OUT_BATCH(active ? stage_state->push_const_size : 0); - OUT_BATCH(0); + + /* Workaround for SKL+ (we use option #2 until we have a need for more + * constant buffers). This comes from the documentation for 3DSTATE_CONSTANT_* + * + * The driver must ensure The following case does not occur without a flush + * to the 3D engine: 3DSTATE_CONSTANT_* with buffer 3 read length equal to + * zero committed followed by a 3DSTATE_CONSTANT_* with buffer 0 read length + * not equal to zero committed. Possible ways to avoid this condition + * include: + * 1. always force buffer 3 to have a non zero read length + * 2. always force buffer 0 to a zero read length + */ + if (brw->gen >= 9 && active) { + OUT_BATCH(0); + OUT_BATCH(stage_state->push_const_size); + } else { + OUT_BATCH(active ? stage_state->push_const_size : 0); + OUT_BATCH(0); + } /* Pointer to the constant buffer. Covered by the set of state flags * from gen6_prepare_wm_contants */ - OUT_BATCH(active ? (stage_state->push_const_offset | mocs) : 0); - OUT_BATCH(0); - OUT_BATCH(0); - OUT_BATCH(0); - if (brw->gen >= 8) { + if (brw->gen >= 9 && active) { + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + /* XXX: When using buffers other than 0, you need to specify the + * graphics virtual address regardless of INSPM/debug bits + */ + OUT_RELOC64(brw->batch.bo, I915_GEM_DOMAIN_RENDER, 0, + stage_state->push_const_offset); OUT_BATCH(0); OUT_BATCH(0); + } else if (brw->gen>= 8) { + OUT_BATCH(active ? (stage_state->push_const_offset | mocs) : 0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + } else { + OUT_BATCH(active ? (stage_state->push_const_offset | mocs) : 0); + OUT_BATCH(0); OUT_BATCH(0); OUT_BATCH(0); } |