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| /* |
| * Copyright © 2012 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| /** |
| * @file gen8_sol_state.c |
| * |
| * Controls the stream output logic (SOL) stage of the gen8 hardware, which is |
| * used to implement GL_EXT_transform_feedback. |
| */ |
| |
| #include "brw_context.h" |
| #include "brw_state.h" |
| #include "brw_defines.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_buffer_objects.h" |
| #include "main/transformfeedback.h" |
| |
| static void |
| gen8_upload_3dstate_so_buffers(struct brw_context *brw) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| /* BRW_NEW_TRANSFORM_FEEDBACK */ |
| struct gl_transform_feedback_object *xfb_obj = |
| ctx->TransformFeedback.CurrentObject; |
| struct brw_transform_feedback_object *brw_obj = |
| (struct brw_transform_feedback_object *) xfb_obj; |
| uint32_t mocs_wb = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB; |
| |
| /* Set up the up to 4 output buffers. These are the ranges defined in the |
| * gl_transform_feedback_object. |
| */ |
| for (int i = 0; i < 4; i++) { |
| struct intel_buffer_object *bufferobj = |
| intel_buffer_object(xfb_obj->Buffers[i]); |
| |
| if (!bufferobj) { |
| BEGIN_BATCH(8); |
| OUT_BATCH(_3DSTATE_SO_BUFFER << 16 | (8 - 2)); |
| OUT_BATCH((i << SO_BUFFER_INDEX_SHIFT)); |
| OUT_BATCH(0); |
| OUT_BATCH(0); |
| OUT_BATCH(0); |
| OUT_BATCH(0); |
| OUT_BATCH(0); |
| OUT_BATCH(0); |
| ADVANCE_BATCH(); |
| continue; |
| } |
| |
| uint32_t start = xfb_obj->Offset[i]; |
| assert(start % 4 == 0); |
| uint32_t end = ALIGN(start + xfb_obj->Size[i], 4); |
| drm_intel_bo *bo = |
| intel_bufferobj_buffer(brw, bufferobj, start, end - start); |
| assert(end <= bo->size); |
| |
| perf_debug("Missing MOCS setup for 3DSTATE_SO_BUFFER."); |
| |
| BEGIN_BATCH(8); |
| OUT_BATCH(_3DSTATE_SO_BUFFER << 16 | (8 - 2)); |
| OUT_BATCH(GEN8_SO_BUFFER_ENABLE | (i << SO_BUFFER_INDEX_SHIFT) | |
| GEN8_SO_BUFFER_OFFSET_WRITE_ENABLE | |
| GEN8_SO_BUFFER_OFFSET_ADDRESS_ENABLE | |
| (mocs_wb << 22)); |
| OUT_RELOC64(bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, start); |
| OUT_BATCH(xfb_obj->Size[i] / 4 - 1); |
| OUT_RELOC64(brw_obj->offset_bo, |
| I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION, |
| i * sizeof(uint32_t)); |
| if (brw_obj->zero_offsets) |
| OUT_BATCH(0); /* Zero out the offset and write that to offset_bo */ |
| else |
| OUT_BATCH(0xFFFFFFFF); /* Use offset_bo as the "Stream Offset." */ |
| ADVANCE_BATCH(); |
| } |
| brw_obj->zero_offsets = false; |
| } |
| |
| static void |
| gen8_upload_3dstate_streamout(struct brw_context *brw, bool active, |
| struct brw_vue_map *vue_map) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| |
| /* BRW_NEW_TRANSFORM_FEEDBACK */ |
| struct gl_transform_feedback_object *xfb_obj = |
| ctx->TransformFeedback.CurrentObject; |
| const struct gl_transform_feedback_info *linked_xfb_info = |
| &xfb_obj->shader_program->LinkedTransformFeedback; |
| uint32_t dw1 = 0, dw2 = 0, dw3 = 0, dw4 = 0; |
| |
| if (active) { |
| int urb_entry_read_offset = 0; |
| int urb_entry_read_length = (vue_map->num_slots + 1) / 2 - |
| urb_entry_read_offset; |
| |
| dw1 |= SO_FUNCTION_ENABLE; |
| dw1 |= SO_STATISTICS_ENABLE; |
| |
| /* _NEW_LIGHT */ |
| if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) |
| dw1 |= SO_REORDER_TRAILING; |
| |
| /* We always read the whole vertex. This could be reduced at some |
| * point by reading less and offsetting the register index in the |
| * SO_DECLs. |
| */ |
| dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_0_VERTEX_READ_OFFSET); |
| dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_0_VERTEX_READ_LENGTH); |
| |
| dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_1_VERTEX_READ_OFFSET); |
| dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_1_VERTEX_READ_LENGTH); |
| |
| dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_2_VERTEX_READ_OFFSET); |
| dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_2_VERTEX_READ_LENGTH); |
| |
| dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_3_VERTEX_READ_OFFSET); |
| dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_3_VERTEX_READ_LENGTH); |
| |
| /* Set buffer pitches; 0 means unbound. */ |
| if (xfb_obj->Buffers[0]) |
| dw3 |= linked_xfb_info->BufferStride[0] * 4; |
| if (xfb_obj->Buffers[1]) |
| dw3 |= (linked_xfb_info->BufferStride[1] * 4) << 16; |
| if (xfb_obj->Buffers[2]) |
| dw4 |= linked_xfb_info->BufferStride[2] * 4; |
| if (xfb_obj->Buffers[3]) |
| dw4 |= (linked_xfb_info->BufferStride[3] * 4) << 16; |
| } |
| |
| BEGIN_BATCH(5); |
| OUT_BATCH(_3DSTATE_STREAMOUT << 16 | (5 - 2)); |
| OUT_BATCH(dw1); |
| OUT_BATCH(dw2); |
| OUT_BATCH(dw3); |
| OUT_BATCH(dw4); |
| ADVANCE_BATCH(); |
| } |
| |
| static void |
| upload_sol_state(struct brw_context *brw) |
| { |
| struct gl_context *ctx = &brw->ctx; |
| /* BRW_NEW_TRANSFORM_FEEDBACK */ |
| bool active = _mesa_is_xfb_active_and_unpaused(ctx); |
| |
| if (active) { |
| gen8_upload_3dstate_so_buffers(brw); |
| /* BRW_NEW_VUE_MAP_GEOM_OUT */ |
| gen7_upload_3dstate_so_decl_list(brw, &brw->vue_map_geom_out); |
| } |
| |
| gen8_upload_3dstate_streamout(brw, active, &brw->vue_map_geom_out); |
| } |
| |
| const struct brw_tracked_state gen8_sol_state = { |
| .dirty = { |
| .mesa = _NEW_LIGHT, |
| .brw = BRW_NEW_BATCH | |
| BRW_NEW_TRANSFORM_FEEDBACK | |
| BRW_NEW_VUE_MAP_GEOM_OUT, |
| }, |
| .emit = upload_sol_state, |
| }; |