325 lines
9.5 KiB
C
325 lines
9.5 KiB
C
/**************************************************************************
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*
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* Copyright 2010 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "draw/draw_private.h"
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#include "draw/draw_vs.h"
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#include "draw/draw_gs.h"
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#include "draw/draw_context.h"
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#include "draw/draw_vbuf.h"
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#include "draw/draw_vertex.h"
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#include "draw/draw_pt.h"
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#include "pipe/p_state.h"
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#include "util/u_math.h"
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#include "util/u_memory.h"
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struct pt_so_emit {
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struct draw_context *draw;
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unsigned input_vertex_stride;
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const float (*inputs)[4];
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const float *pre_clip_pos;
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boolean has_so;
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boolean use_pre_clip_pos;
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int pos_idx;
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unsigned emitted_primitives;
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unsigned emitted_vertices;
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unsigned generated_primitives;
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};
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static const struct pipe_stream_output_info *
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draw_so_info(const struct draw_context *draw)
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{
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const struct pipe_stream_output_info *state = NULL;
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if (draw->gs.geometry_shader) {
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state = &draw->gs.geometry_shader->state.stream_output;
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} else {
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state = &draw->vs.vertex_shader->state.stream_output;
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}
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return state;
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}
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static INLINE boolean
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draw_has_so(const struct draw_context *draw)
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{
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const struct pipe_stream_output_info *state = draw_so_info(draw);
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if (state && state->num_outputs > 0)
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return TRUE;
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return FALSE;
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}
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void draw_pt_so_emit_prepare(struct pt_so_emit *emit, boolean use_pre_clip_pos)
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{
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struct draw_context *draw = emit->draw;
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emit->use_pre_clip_pos = use_pre_clip_pos;
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emit->has_so = draw_has_so(draw);
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if (use_pre_clip_pos)
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emit->pos_idx = draw_current_shader_position_output(draw);
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/* if we have a state with outputs make sure we have
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* buffers to output to */
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if (emit->has_so) {
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boolean has_valid_buffer = FALSE;
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unsigned i;
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for (i = 0; i < draw->so.num_targets; ++i) {
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if (draw->so.targets[i]) {
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has_valid_buffer = TRUE;
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break;
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}
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}
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emit->has_so = has_valid_buffer;
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}
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if (!emit->has_so)
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return;
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/* XXX: need to flush to get prim_vbuf.c to release its allocation??
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*/
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draw_do_flush( draw, DRAW_FLUSH_BACKEND );
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}
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static void so_emit_prim(struct pt_so_emit *so,
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unsigned *indices,
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unsigned num_vertices)
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{
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unsigned slot, i;
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unsigned input_vertex_stride = so->input_vertex_stride;
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struct draw_context *draw = so->draw;
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const float (*input_ptr)[4];
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const float *pcp_ptr = NULL;
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const struct pipe_stream_output_info *state = draw_so_info(draw);
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float *buffer;
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int buffer_total_bytes[PIPE_MAX_SO_BUFFERS];
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boolean buffer_written[PIPE_MAX_SO_BUFFERS] = {0};
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input_ptr = so->inputs;
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if (so->use_pre_clip_pos)
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pcp_ptr = so->pre_clip_pos;
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++so->generated_primitives;
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for (i = 0; i < draw->so.num_targets; i++) {
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struct draw_so_target *target = draw->so.targets[i];
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if (target) {
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buffer_total_bytes[i] = target->internal_offset;
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} else {
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buffer_total_bytes[i] = 0;
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}
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}
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/* check have we space to emit prim first - if not don't do anything */
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for (i = 0; i < num_vertices; ++i) {
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unsigned ob;
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for (slot = 0; slot < state->num_outputs; ++slot) {
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unsigned num_comps = state->output[slot].num_components;
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int ob = state->output[slot].output_buffer;
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unsigned dst_offset = state->output[slot].dst_offset * sizeof(float);
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unsigned write_size = num_comps * sizeof(float);
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/* If a buffer is missing then that's equivalent to
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* an overflow */
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if (!draw->so.targets[ob]) {
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return;
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}
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if ((buffer_total_bytes[ob] + write_size + dst_offset) >
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draw->so.targets[ob]->target.buffer_size) {
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return;
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}
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}
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for (ob = 0; ob < draw->so.num_targets; ++ob) {
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buffer_total_bytes[ob] += state->stride[ob] * sizeof(float);
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}
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}
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for (i = 0; i < num_vertices; ++i) {
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const float (*input)[4];
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const float *pre_clip_pos = NULL;
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int ob;
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input = (const float (*)[4])(
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(const char *)input_ptr + (indices[i] * input_vertex_stride));
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if (pcp_ptr)
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pre_clip_pos = (const float *)(
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(const char *)pcp_ptr + (indices[i] * input_vertex_stride));
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for (slot = 0; slot < state->num_outputs; ++slot) {
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unsigned idx = state->output[slot].register_index;
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unsigned start_comp = state->output[slot].start_component;
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unsigned num_comps = state->output[slot].num_components;
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ob = state->output[slot].output_buffer;
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buffer_written[ob] = TRUE;
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buffer = (float *)((char *)draw->so.targets[ob]->mapping +
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draw->so.targets[ob]->target.buffer_offset +
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draw->so.targets[ob]->internal_offset) +
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state->output[slot].dst_offset;
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if (idx == so->pos_idx && pcp_ptr)
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memcpy(buffer, &pre_clip_pos[start_comp],
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num_comps * sizeof(float));
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else
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memcpy(buffer, &input[idx][start_comp],
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num_comps * sizeof(float));
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#if 0
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{
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int j;
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debug_printf("VERT[%d], offset = %d, slot[%d] sc = %d, num_c = %d, idx = %d = [",
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i + draw->so.targets[ob]->emitted_vertices,
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draw->so.targets[ob]->internal_offset,
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slot, start_comp, num_comps, idx);
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for (j = 0; j < num_comps; ++j) {
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unsigned *ubuffer = (unsigned*)buffer;
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debug_printf("%d (0x%x), ", ubuffer[j], ubuffer[j]);
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}
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debug_printf("]\n");
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}
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#endif
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}
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for (ob = 0; ob < draw->so.num_targets; ++ob) {
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struct draw_so_target *target = draw->so.targets[ob];
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if (target && buffer_written[ob]) {
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target->internal_offset += state->stride[ob] * sizeof(float);
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target->emitted_vertices += 1;
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}
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}
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}
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so->emitted_vertices += num_vertices;
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++so->emitted_primitives;
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}
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static void so_point(struct pt_so_emit *so, int idx)
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{
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unsigned indices[1];
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indices[0] = idx;
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so_emit_prim(so, indices, 1);
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}
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static void so_line(struct pt_so_emit *so, int i0, int i1)
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{
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unsigned indices[2];
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indices[0] = i0;
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indices[1] = i1;
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so_emit_prim(so, indices, 2);
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}
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static void so_tri(struct pt_so_emit *so, int i0, int i1, int i2)
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{
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unsigned indices[3];
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indices[0] = i0;
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indices[1] = i1;
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indices[2] = i2;
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so_emit_prim(so, indices, 3);
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}
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#define FUNC so_run_linear
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#define GET_ELT(idx) (start + (idx))
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#include "draw_so_emit_tmp.h"
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#define FUNC so_run_elts
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#define LOCAL_VARS const ushort *elts = input_prims->elts;
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#define GET_ELT(idx) (elts[start + (idx)])
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#include "draw_so_emit_tmp.h"
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void draw_pt_so_emit( struct pt_so_emit *emit,
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const struct draw_vertex_info *input_verts,
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const struct draw_prim_info *input_prims )
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{
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struct draw_context *draw = emit->draw;
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struct vbuf_render *render = draw->render;
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unsigned start, i;
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if (!emit->has_so)
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return;
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if (!draw->so.num_targets)
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return;
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emit->emitted_vertices = 0;
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emit->emitted_primitives = 0;
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emit->generated_primitives = 0;
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emit->input_vertex_stride = input_verts->stride;
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if (emit->use_pre_clip_pos)
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emit->pre_clip_pos = input_verts->verts->pre_clip_pos;
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emit->inputs = (const float (*)[4])input_verts->verts->data;
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/* XXX: need to flush to get prim_vbuf.c to release its allocation??*/
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draw_do_flush( draw, DRAW_FLUSH_BACKEND );
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for (start = i = 0; i < input_prims->primitive_count;
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start += input_prims->primitive_lengths[i], i++)
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{
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unsigned count = input_prims->primitive_lengths[i];
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if (input_prims->linear) {
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so_run_linear(emit, input_prims, input_verts,
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start, count);
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} else {
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so_run_elts(emit, input_prims, input_verts,
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start, count);
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}
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}
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render->set_stream_output_info(render,
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emit->emitted_primitives,
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emit->emitted_vertices,
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emit->generated_primitives);
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}
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struct pt_so_emit *draw_pt_so_emit_create( struct draw_context *draw )
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{
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struct pt_so_emit *emit = CALLOC_STRUCT(pt_so_emit);
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if (!emit)
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return NULL;
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emit->draw = draw;
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return emit;
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}
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void draw_pt_so_emit_destroy( struct pt_so_emit *emit )
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{
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FREE(emit);
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}
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