/************************************************************************** * * Copyright 2010 VMware, Inc. * All Rights Reserved. * * 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, sub license, 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 NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. * **************************************************************************/ #include "draw/draw_private.h" #include "draw/draw_vs.h" #include "draw/draw_gs.h" #include "draw/draw_context.h" #include "draw/draw_vbuf.h" #include "draw/draw_vertex.h" #include "draw/draw_pt.h" #include "pipe/p_state.h" #include "util/u_math.h" #include "util/u_memory.h" struct pt_so_emit { struct draw_context *draw; unsigned input_vertex_stride; const float (*inputs)[4]; const float *pre_clip_pos; boolean has_so; boolean use_pre_clip_pos; int pos_idx; unsigned emitted_primitives; unsigned generated_primitives; }; static const struct pipe_stream_output_info * draw_so_info(const struct draw_context *draw) { const struct pipe_stream_output_info *state = NULL; if (draw->gs.geometry_shader) { state = &draw->gs.geometry_shader->state.stream_output; } else { state = &draw->vs.vertex_shader->state.stream_output; } return state; } static INLINE boolean draw_has_so(const struct draw_context *draw) { const struct pipe_stream_output_info *state = draw_so_info(draw); if (state && state->num_outputs > 0) return TRUE; return FALSE; } void draw_pt_so_emit_prepare(struct pt_so_emit *emit, boolean use_pre_clip_pos) { struct draw_context *draw = emit->draw; emit->use_pre_clip_pos = use_pre_clip_pos; emit->has_so = draw_has_so(draw); if (use_pre_clip_pos) emit->pos_idx = draw_current_shader_position_output(draw); /* if we have a state with outputs make sure we have * buffers to output to */ if (emit->has_so) { boolean has_valid_buffer = FALSE; unsigned i; for (i = 0; i < draw->so.num_targets; ++i) { if (draw->so.targets[i]) { has_valid_buffer = TRUE; break; } } emit->has_so = has_valid_buffer; } if (!emit->has_so) return; /* XXX: need to flush to get prim_vbuf.c to release its allocation?? */ draw_do_flush( draw, DRAW_FLUSH_BACKEND ); } static void so_emit_prim(struct pt_so_emit *so, unsigned *indices, unsigned num_vertices) { unsigned slot, i; unsigned input_vertex_stride = so->input_vertex_stride; struct draw_context *draw = so->draw; const float (*input_ptr)[4]; const float *pcp_ptr = NULL; const struct pipe_stream_output_info *state = draw_so_info(draw); float *buffer; int buffer_total_bytes[PIPE_MAX_SO_BUFFERS]; boolean buffer_written[PIPE_MAX_SO_BUFFERS] = {0}; input_ptr = so->inputs; if (so->use_pre_clip_pos) pcp_ptr = so->pre_clip_pos; ++so->generated_primitives; for (i = 0; i < draw->so.num_targets; i++) { struct draw_so_target *target = draw->so.targets[i]; if (target) { buffer_total_bytes[i] = target->internal_offset; } else { buffer_total_bytes[i] = 0; } } /* check have we space to emit prim first - if not don't do anything */ for (i = 0; i < num_vertices; ++i) { unsigned ob; for (slot = 0; slot < state->num_outputs; ++slot) { unsigned num_comps = state->output[slot].num_components; int ob = state->output[slot].output_buffer; unsigned dst_offset = state->output[slot].dst_offset * sizeof(float); unsigned write_size = num_comps * sizeof(float); /* If a buffer is missing then that's equivalent to * an overflow */ if (!draw->so.targets[ob]) { return; } if ((buffer_total_bytes[ob] + write_size + dst_offset) > draw->so.targets[ob]->target.buffer_size) { return; } } for (ob = 0; ob < draw->so.num_targets; ++ob) { buffer_total_bytes[ob] += state->stride[ob] * sizeof(float); } } for (i = 0; i < num_vertices; ++i) { const float (*input)[4]; const float *pre_clip_pos = NULL; int ob; input = (const float (*)[4])( (const char *)input_ptr + (indices[i] * input_vertex_stride)); if (pcp_ptr) pre_clip_pos = (const float *)( (const char *)pcp_ptr + (indices[i] * input_vertex_stride)); for (slot = 0; slot < state->num_outputs; ++slot) { unsigned idx = state->output[slot].register_index; unsigned start_comp = state->output[slot].start_component; unsigned num_comps = state->output[slot].num_components; ob = state->output[slot].output_buffer; buffer_written[ob] = TRUE; buffer = (float *)((char *)draw->so.targets[ob]->mapping + draw->so.targets[ob]->target.buffer_offset + draw->so.targets[ob]->internal_offset) + state->output[slot].dst_offset; if (idx == so->pos_idx && pcp_ptr) memcpy(buffer, &pre_clip_pos[start_comp], num_comps * sizeof(float)); else memcpy(buffer, &input[idx][start_comp], num_comps * sizeof(float)); #if 0 { int j; debug_printf("VERT[%d], offset = %d, slot[%d] sc = %d, num_c = %d, idx = %d = [", i + draw->so.targets[ob]->emitted_vertices, draw->so.targets[ob]->internal_offset, slot, start_comp, num_comps, idx); for (j = 0; j < num_comps; ++j) { unsigned *ubuffer = (unsigned*)buffer; debug_printf("%d (0x%x), ", ubuffer[j], ubuffer[j]); } debug_printf("]\n"); } #endif } for (ob = 0; ob < draw->so.num_targets; ++ob) { struct draw_so_target *target = draw->so.targets[ob]; if (target && buffer_written[ob]) { target->internal_offset += state->stride[ob] * sizeof(float); target->emitted_vertices += 1; } } } ++so->emitted_primitives; } static void so_point(struct pt_so_emit *so, int idx) { unsigned indices[1]; indices[0] = idx; so_emit_prim(so, indices, 1); } static void so_line(struct pt_so_emit *so, int i0, int i1) { unsigned indices[2]; indices[0] = i0; indices[1] = i1; so_emit_prim(so, indices, 2); } static void so_tri(struct pt_so_emit *so, int i0, int i1, int i2) { unsigned indices[3]; indices[0] = i0; indices[1] = i1; indices[2] = i2; so_emit_prim(so, indices, 3); } #define FUNC so_run_linear #define GET_ELT(idx) (start + (idx)) #include "draw_so_emit_tmp.h" #define FUNC so_run_elts #define LOCAL_VARS const ushort *elts = input_prims->elts; #define GET_ELT(idx) (elts[start + (idx)]) #include "draw_so_emit_tmp.h" void draw_pt_so_emit( struct pt_so_emit *emit, const struct draw_vertex_info *input_verts, const struct draw_prim_info *input_prims ) { struct draw_context *draw = emit->draw; struct vbuf_render *render = draw->render; unsigned start, i; if (!emit->has_so) return; if (!draw->so.num_targets) return; emit->emitted_primitives = 0; emit->generated_primitives = 0; emit->input_vertex_stride = input_verts->stride; if (emit->use_pre_clip_pos) emit->pre_clip_pos = input_verts->verts->pre_clip_pos; emit->inputs = (const float (*)[4])input_verts->verts->data; /* XXX: need to flush to get prim_vbuf.c to release its allocation??*/ draw_do_flush( draw, DRAW_FLUSH_BACKEND ); for (start = i = 0; i < input_prims->primitive_count; start += input_prims->primitive_lengths[i], i++) { unsigned count = input_prims->primitive_lengths[i]; if (input_prims->linear) { so_run_linear(emit, input_prims, input_verts, start, count); } else { so_run_elts(emit, input_prims, input_verts, start, count); } } render->set_stream_output_info(render, emit->emitted_primitives, emit->generated_primitives); } struct pt_so_emit *draw_pt_so_emit_create( struct draw_context *draw ) { struct pt_so_emit *emit = CALLOC_STRUCT(pt_so_emit); if (!emit) return NULL; emit->draw = draw; return emit; } void draw_pt_so_emit_destroy( struct pt_so_emit *emit ) { FREE(emit); }