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/**************************************************************************
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* Copyright 2010 VMware, Inc.
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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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* 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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* 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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#include "draw/draw_context.h"
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#include "draw/draw_private.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 "util/u_math.h"
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#include "util/u_memory.h"
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struct draw_context *draw;
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void *buffers[PIPE_MAX_SO_BUFFERS];
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unsigned input_vertex_stride;
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const float (*inputs)[4];
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boolean single_buffer;
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unsigned emitted_primitives;
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unsigned emitted_vertices;
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void draw_pt_so_emit_prepare(struct pt_so_emit *emit)
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struct draw_context *draw = emit->draw;
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emit->has_so = (draw->so.state.num_outputs > 0);
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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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boolean has_valid_buffer = FALSE;
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for (i = 0; i < draw->so.num_buffers; ++i) {
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if (draw->so.buffers[i]) {
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has_valid_buffer = TRUE;
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emit->has_so = has_valid_buffer;
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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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is_component_writable(unsigned mask,
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case TGSI_WRITEMASK_NONE:
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case TGSI_WRITEMASK_X:
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case TGSI_WRITEMASK_Y:
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case TGSI_WRITEMASK_XY:
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return compo == 0 || compo == 1;
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case TGSI_WRITEMASK_Z:
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case TGSI_WRITEMASK_XZ:
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return compo == 0 || compo == 2;
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case TGSI_WRITEMASK_YZ:
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return compo == 1 || compo == 2;
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case TGSI_WRITEMASK_XYZ:
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return compo == 0 || compo == 1 || compo == 2;
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case TGSI_WRITEMASK_W:
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case TGSI_WRITEMASK_XW:
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return compo == 0 || compo == 3;
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case TGSI_WRITEMASK_YW:
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return compo == 1 || compo == 3;
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case TGSI_WRITEMASK_XYW:
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return compo == 0 || compo == 1 || compo == 3;
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case TGSI_WRITEMASK_ZW:
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return compo == 2 || compo == 3;
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case TGSI_WRITEMASK_XZW:
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return compo == 0 || compo == 1 || compo == 3;
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case TGSI_WRITEMASK_YZW:
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return compo == 1 || compo == 2 || compo == 4;
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case TGSI_WRITEMASK_XYZW:
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debug_assert(!"Unknown writemask in stream out");
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static void so_emit_prim(struct pt_so_emit *so,
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unsigned num_vertices)
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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 struct pipe_stream_output_state *state =
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input_ptr = so->inputs;
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for (i = 0; i < num_vertices; ++i) {
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const float (*input)[4];
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unsigned total_written_compos = 0;
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/*debug_printf("%d) vertex index = %d (prim idx = %d)\n", i, indices[i], prim_idx);*/
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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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for (slot = 0; slot < state->num_outputs; ++slot) {
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unsigned idx = state->register_index[slot];
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unsigned writemask = state->register_mask[slot];
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unsigned written_compos = 0;
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buffer = (float**)&so->buffers[state->output_buffer[slot]];
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/*debug_printf("\tSlot = %d, vs_slot = %d, idx = %d:\n",
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slot, vs_slot, idx);*/
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assert(!util_is_inf_or_nan(input[idx][0]));
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assert(!util_is_inf_or_nan(input[idx][1]));
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assert(!util_is_inf_or_nan(input[idx][2]));
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assert(!util_is_inf_or_nan(input[idx][3]));
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for (compo = 0; compo < 4; ++compo) {
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if (is_component_writable(writemask, compo)) {
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float *buf = *buffer;
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buf[written_compos++] = input[idx][compo];
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debug_printf("\t\t(writemask = %d)%f %f %f %f\n",
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*buffer += written_compos;
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total_written_compos += written_compos;
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if (so->single_buffer) {
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int stride = (int)state->stride -
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sizeof(float) * total_written_compos;
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debug_assert(stride >= 0);
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*buffer = (float*) (((char*)*buffer) + stride);
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so->emitted_vertices += num_vertices;
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++so->emitted_primitives;
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static void so_point(struct pt_so_emit *so, int idx)
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so_emit_prim(so, indices, 1);
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static void so_line(struct pt_so_emit *so, int i0, int i1)
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so_emit_prim(so, indices, 2);
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static void so_tri(struct pt_so_emit *so, int i0, int i1, int i2)
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so_emit_prim(so, indices, 3);
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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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struct draw_context *draw = emit->draw;
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struct vbuf_render *render = draw->render;
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emit->emitted_vertices = 0;
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emit->emitted_primitives = 0;
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emit->input_vertex_stride = input_verts->stride;
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emit->inputs = (const float (*)[4])input_verts->verts->data;
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for (i = 0; i < draw->so.num_buffers; ++i) {
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emit->buffers[i] = draw->so.buffers[i];
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emit->single_buffer = TRUE;
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for (i = 0; i < draw->so.state.num_outputs; ++i) {
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if (draw->so.state.output_buffer[i] != 0)
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emit->single_buffer = FALSE;
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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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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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so_run_elts(emit, input_prims, input_verts,
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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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struct pt_so_emit *draw_pt_so_emit_create( struct draw_context *draw )
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struct pt_so_emit *emit = CALLOC_STRUCT(pt_so_emit);
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void draw_pt_so_emit_destroy( struct pt_so_emit *emit )