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| /************************************************************************** |
| * |
| * 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 emitted_vertices; |
| 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_vertices += num_vertices; |
| ++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_vertices = 0; |
| 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->emitted_vertices, |
| 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); |
| } |