diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_gs_state.c | 154 |
1 files changed, 119 insertions, 35 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_gs_state.c b/src/mesa/drivers/dri/i965/gen6_gs_state.c index 9648fb78529..0b718c9a87f 100644 --- a/src/mesa/drivers/dri/i965/gen6_gs_state.c +++ b/src/mesa/drivers/dri/i965/gen6_gs_state.c @@ -31,58 +31,142 @@ #include "intel_batchbuffer.h" static void -upload_gs_state(struct brw_context *brw) +upload_gs_state_for_tf(struct brw_context *brw) { - /* Disable all the constant buffers. */ - BEGIN_BATCH(5); - OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2)); - OUT_BATCH(0); - OUT_BATCH(0); - OUT_BATCH(0); - OUT_BATCH(0); + BEGIN_BATCH(7); + OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2)); + OUT_BATCH(brw->ff_gs.prog_offset); + OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE); + OUT_BATCH(0); /* no scratch space */ + OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) | + (brw->ff_gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT)); + OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) | + GEN6_GS_STATISTICS_ENABLE | + GEN6_GS_SO_STATISTICS_ENABLE | + GEN6_GS_RENDERING_ENABLE); + OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE | + GEN6_GS_SVBI_POSTINCREMENT_ENABLE | + (brw->ff_gs.prog_data->svbi_postincrement_value << + GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) | + GEN6_GS_ENABLE); ADVANCE_BATCH(); +} + +static void +upload_gs_state(struct brw_context *brw) +{ + /* BRW_NEW_GEOMETRY_PROGRAM */ + bool active = brw->geometry_program; + /* CACHE_NEW_GS_PROG */ + const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base; + const struct brw_stage_state *stage_state = &brw->gs.base; + + if (active) { + /* FIXME: enable constant buffers */ + BEGIN_BATCH(5); + OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2)); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + ADVANCE_BATCH(); - if (brw->ff_gs.prog_active) { BEGIN_BATCH(7); OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2)); - OUT_BATCH(brw->ff_gs.prog_offset); - OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE); - OUT_BATCH(0); /* no scratch space */ - OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) | - (brw->ff_gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT)); + OUT_BATCH(stage_state->prog_offset); + + /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are enabled as it + * was previously done for gen6. + * + * TODO: test with both disabled to see if the HW is behaving + * as expected, like in gen7. + */ + OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE | + ((ALIGN(stage_state->sampler_count, 4)/4) << + GEN6_GS_SAMPLER_COUNT_SHIFT) | + ((prog_data->base.binding_table.size_bytes / 4) << + GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT)); + + if (prog_data->base.total_scratch) { + OUT_RELOC(stage_state->scratch_bo, + I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, + ffs(prog_data->base.total_scratch) - 11); + } else { + OUT_BATCH(0); /* no scratch space */ + } + + OUT_BATCH((prog_data->urb_read_length << + GEN6_GS_URB_READ_LENGTH_SHIFT) | + (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT) | + (prog_data->base.dispatch_grf_start_reg << + GEN6_GS_DISPATCH_START_GRF_SHIFT)); + OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) | - GEN6_GS_STATISTICS_ENABLE | - GEN6_GS_SO_STATISTICS_ENABLE | - GEN6_GS_RENDERING_ENABLE); - OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE | - GEN6_GS_SVBI_POSTINCREMENT_ENABLE | - (brw->ff_gs.prog_data->svbi_postincrement_value << - GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) | - GEN6_GS_ENABLE); + GEN6_GS_STATISTICS_ENABLE | + GEN6_GS_SO_STATISTICS_ENABLE | + GEN6_GS_RENDERING_ENABLE); + + /* FIXME: Enable SVBI payload only when TF is enable in SNB for + * user-provided GS. + */ + if (0) { + /* GEN6_GS_REORDER is equivalent to GEN7_GS_REORDER_TRAILING + * in gen7. SNB and IVB specs are the same regarding the reordering of + * TRISTRIP/TRISTRIP_REV vertices and triangle orientation, so we do + * the same thing in both generations. For more details, see the + * comment in gen7_gs_state.c + */ + OUT_BATCH(GEN6_GS_REORDER | + GEN6_GS_SVBI_PAYLOAD_ENABLE | + GEN6_GS_SVBI_POSTINCREMENT_ENABLE | + /* FIXME: prog_data->svbi_postincrement_value instead of 0 */ + (0 << GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) | + GEN6_GS_ENABLE); + } else { + OUT_BATCH(GEN6_GS_REORDER | GEN6_GS_ENABLE); + } ADVANCE_BATCH(); } else { - BEGIN_BATCH(7); - OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2)); - OUT_BATCH(0); /* prog_bo */ - OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) | - (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT)); - OUT_BATCH(0); /* scratch space base offset */ - OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) | - (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) | - (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT)); - OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) | - GEN6_GS_STATISTICS_ENABLE | - GEN6_GS_RENDERING_ENABLE); + /* Disable all the constant buffers. */ + BEGIN_BATCH(5); + OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2)); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); OUT_BATCH(0); ADVANCE_BATCH(); + + if (brw->ff_gs.prog_active) { + /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS + * program. This function provides the needed 3DSTATE_GS for this. + */ + upload_gs_state_for_tf(brw); + } else { + /* No GS function required */ + BEGIN_BATCH(7); + OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2)); + OUT_BATCH(0); /* prog_bo */ + OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) | + (0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT)); + OUT_BATCH(0); /* scratch space base offset */ + OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) | + (0 << GEN6_GS_URB_READ_LENGTH_SHIFT) | + (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT)); + OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) | + GEN6_GS_STATISTICS_ENABLE | + GEN6_GS_RENDERING_ENABLE); + OUT_BATCH(0); + ADVANCE_BATCH(); + } } + brw->gs.enabled = active; } const struct brw_tracked_state gen6_gs_state = { .dirty = { .mesa = _NEW_TRANSFORM, .brw = BRW_NEW_CONTEXT | BRW_NEW_PUSH_CONSTANT_ALLOCATION, - .cache = CACHE_NEW_FF_GS_PROG + .cache = (CACHE_NEW_GS_PROG | CACHE_NEW_FF_GS_PROG) }, .emit = upload_gs_state, }; |