-
-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 |= urb_entry_read_offset << SO_STREAM_0_VERTEX_READ_OFFSET_SHIFT;
- dw2 |= (urb_entry_read_length - 1) << SO_STREAM_0_VERTEX_READ_LENGTH_SHIFT;
-
- dw2 |= urb_entry_read_offset << SO_STREAM_1_VERTEX_READ_OFFSET_SHIFT;
- dw2 |= (urb_entry_read_length - 1) << SO_STREAM_1_VERTEX_READ_LENGTH_SHIFT;
-
- dw2 |= urb_entry_read_offset << SO_STREAM_2_VERTEX_READ_OFFSET_SHIFT;
- dw2 |= (urb_entry_read_length - 1) << SO_STREAM_2_VERTEX_READ_LENGTH_SHIFT;
-
- dw2 |= urb_entry_read_offset << SO_STREAM_3_VERTEX_READ_OFFSET_SHIFT;
- dw2 |= (urb_entry_read_length - 1) << SO_STREAM_3_VERTEX_READ_LENGTH_SHIFT;
-
- /* 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,
-};