618 lines
20 KiB
C
618 lines
20 KiB
C
/**************************************************************************
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*
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* Copyright 2007 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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/*
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* Authors:
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* Keith Whitwell <keithw@vmware.com>
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*/
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#include "draw/draw_context.h"
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#include "draw/draw_gs.h"
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#include "draw/draw_tess.h"
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#include "draw/draw_private.h"
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#include "draw/draw_pt.h"
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#include "draw/draw_vbuf.h"
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#include "draw/draw_vs.h"
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#include "tgsi/tgsi_dump.h"
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#include "util/u_math.h"
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#include "util/u_prim.h"
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#include "util/format/u_format.h"
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#include "util/u_draw.h"
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DEBUG_GET_ONCE_BOOL_OPTION(draw_fse, "DRAW_FSE", FALSE)
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DEBUG_GET_ONCE_BOOL_OPTION(draw_no_fse, "DRAW_NO_FSE", FALSE)
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/* Overall we split things into:
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* - frontend -- prepare fetch_elts, draw_elts - eg vsplit
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* - middle -- fetch, shade, cliptest, viewport
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* - pipeline -- the prim pipeline: clipping, wide lines, etc
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* - backend -- the vbuf_render provided by the driver.
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*/
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static boolean
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draw_pt_arrays(struct draw_context *draw,
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unsigned prim,
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bool index_bias_varies,
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const struct pipe_draw_start_count_bias *draw_info,
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unsigned num_draws)
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{
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struct draw_pt_front_end *frontend = NULL;
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struct draw_pt_middle_end *middle = NULL;
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unsigned opt = PT_SHADE;
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unsigned out_prim = prim;
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if (draw->gs.geometry_shader)
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out_prim = draw->gs.geometry_shader->output_primitive;
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else if (draw->tes.tess_eval_shader)
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out_prim = get_tes_output_prim(draw->tes.tess_eval_shader);
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if (!draw->render) {
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opt |= PT_PIPELINE;
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}
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if (draw_need_pipeline(draw,
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draw->rasterizer,
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out_prim)) {
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opt |= PT_PIPELINE;
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}
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if ((draw->clip_xy ||
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draw->clip_z ||
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draw->clip_user) && !draw->pt.test_fse) {
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opt |= PT_CLIPTEST;
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}
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if (draw->pt.middle.llvm) {
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middle = draw->pt.middle.llvm;
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} else {
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if (opt == PT_SHADE && !draw->pt.no_fse)
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middle = draw->pt.middle.fetch_shade_emit;
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else
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middle = draw->pt.middle.general;
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}
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frontend = draw->pt.frontend;
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if (frontend) {
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if (draw->pt.prim != prim || draw->pt.opt != opt) {
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/* In certain conditions switching primitives requires us to flush
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* and validate the different stages. One example is when smooth
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* lines are active but first drawn with triangles and then with
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* lines.
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*/
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draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
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frontend = NULL;
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} else if (draw->pt.eltSize != draw->pt.user.eltSize) {
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/* Flush draw state if eltSize changed.
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* This could be improved so only the frontend is flushed since it
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* converts all indices to ushorts and the fetch part of the middle
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* always prepares both linear and indexed.
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*/
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frontend->flush( frontend, DRAW_FLUSH_STATE_CHANGE );
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frontend = NULL;
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}
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}
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if (!frontend) {
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frontend = draw->pt.front.vsplit;
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frontend->prepare( frontend, prim, middle, opt );
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draw->pt.frontend = frontend;
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draw->pt.eltSize = draw->pt.user.eltSize;
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draw->pt.prim = prim;
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draw->pt.opt = opt;
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}
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if (draw->pt.rebind_parameters) {
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/* update constants, viewport dims, clip planes, etc */
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middle->bind_parameters(middle);
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draw->pt.rebind_parameters = FALSE;
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}
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for (unsigned i = 0; i < num_draws; i++) {
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unsigned count = draw_info[i].count;
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/* Sanitize primitive length:
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*/
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unsigned first, incr;
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if (prim == PIPE_PRIM_PATCHES) {
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first = draw->pt.vertices_per_patch;
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incr = draw->pt.vertices_per_patch;
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} else
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draw_pt_split_prim(prim, &first, &incr);
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count = draw_pt_trim_count(draw_info[i].count, first, incr);
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draw->pt.user.eltBias = draw->pt.user.eltSize ?
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(index_bias_varies ? draw_info[i].index_bias : draw_info[0].index_bias) :
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0;
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if (count >= first)
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frontend->run( frontend, draw_info[i].start, count );
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if (draw->pt.user.increment_draw_id)
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draw->pt.user.drawid++;
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}
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return TRUE;
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}
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void draw_pt_flush( struct draw_context *draw, unsigned flags )
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{
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assert(flags);
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if (draw->pt.frontend) {
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draw->pt.frontend->flush( draw->pt.frontend, flags );
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/* don't prepare if we only are flushing the backend */
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if (flags & DRAW_FLUSH_STATE_CHANGE)
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draw->pt.frontend = NULL;
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}
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if (flags & DRAW_FLUSH_PARAMETER_CHANGE) {
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draw->pt.rebind_parameters = TRUE;
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}
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}
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boolean draw_pt_init( struct draw_context *draw )
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{
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draw->pt.test_fse = debug_get_option_draw_fse();
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draw->pt.no_fse = debug_get_option_draw_no_fse();
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draw->pt.front.vsplit = draw_pt_vsplit(draw);
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if (!draw->pt.front.vsplit)
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return FALSE;
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draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw );
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if (!draw->pt.middle.fetch_shade_emit)
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return FALSE;
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draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw );
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if (!draw->pt.middle.general)
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return FALSE;
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#ifdef DRAW_LLVM_AVAILABLE
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if (draw->llvm)
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draw->pt.middle.llvm = draw_pt_fetch_pipeline_or_emit_llvm( draw );
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#endif
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return TRUE;
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}
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void draw_pt_destroy( struct draw_context *draw )
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{
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if (draw->pt.middle.llvm) {
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draw->pt.middle.llvm->destroy( draw->pt.middle.llvm );
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draw->pt.middle.llvm = NULL;
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}
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if (draw->pt.middle.general) {
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draw->pt.middle.general->destroy( draw->pt.middle.general );
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draw->pt.middle.general = NULL;
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}
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if (draw->pt.middle.fetch_shade_emit) {
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draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit );
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draw->pt.middle.fetch_shade_emit = NULL;
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}
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if (draw->pt.front.vsplit) {
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draw->pt.front.vsplit->destroy( draw->pt.front.vsplit );
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draw->pt.front.vsplit = NULL;
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}
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}
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/**
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* Debug- print the first 'count' vertices.
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*/
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static void
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draw_print_arrays(struct draw_context *draw, uint prim, int start, uint count, int index_bias)
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{
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uint i;
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debug_printf("Draw arrays(prim = %u, start = %u, count = %u)\n",
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prim, start, count);
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for (i = 0; i < count; i++) {
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uint ii = 0;
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uint j;
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if (draw->pt.user.eltSize) {
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/* indexed arrays */
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switch (draw->pt.user.eltSize) {
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case 1:
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{
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const ubyte *elem = (const ubyte *) draw->pt.user.elts;
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ii = elem[start + i];
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}
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break;
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case 2:
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{
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const ushort *elem = (const ushort *) draw->pt.user.elts;
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ii = elem[start + i];
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}
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break;
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case 4:
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{
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const uint *elem = (const uint *) draw->pt.user.elts;
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ii = elem[start + i];
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}
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break;
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default:
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assert(0);
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return;
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}
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ii += index_bias;
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debug_printf("Element[%u + %u] + %i -> Vertex %u:\n", start, i,
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index_bias, ii);
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}
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else {
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/* non-indexed arrays */
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ii = start + i;
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debug_printf("Vertex %u:\n", ii);
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}
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for (j = 0; j < draw->pt.nr_vertex_elements; j++) {
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uint buf = draw->pt.vertex_element[j].vertex_buffer_index;
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ubyte *ptr = (ubyte *) draw->pt.user.vbuffer[buf].map;
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if (draw->pt.vertex_element[j].instance_divisor) {
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ii = draw->instance_id / draw->pt.vertex_element[j].instance_divisor;
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}
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ptr += draw->pt.vertex_buffer[buf].buffer_offset;
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ptr += draw->pt.vertex_buffer[buf].stride * ii;
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ptr += draw->pt.vertex_element[j].src_offset;
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debug_printf(" Attr %u: ", j);
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switch (draw->pt.vertex_element[j].src_format) {
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case PIPE_FORMAT_R32_FLOAT:
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{
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float *v = (float *) ptr;
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debug_printf("R %f @ %p\n", v[0], (void *) v);
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}
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break;
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case PIPE_FORMAT_R32G32_FLOAT:
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{
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float *v = (float *) ptr;
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debug_printf("RG %f %f @ %p\n", v[0], v[1], (void *) v);
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}
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break;
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case PIPE_FORMAT_R32G32B32_FLOAT:
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{
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float *v = (float *) ptr;
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debug_printf("RGB %f %f %f @ %p\n", v[0], v[1], v[2], (void *) v);
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}
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break;
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case PIPE_FORMAT_R32G32B32A32_FLOAT:
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{
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float *v = (float *) ptr;
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debug_printf("RGBA %f %f %f %f @ %p\n", v[0], v[1], v[2], v[3],
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(void *) v);
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}
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break;
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case PIPE_FORMAT_B8G8R8A8_UNORM:
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{
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ubyte *u = (ubyte *) ptr;
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debug_printf("BGRA %d %d %d %d @ %p\n", u[0], u[1], u[2], u[3],
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(void *) u);
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}
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break;
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case PIPE_FORMAT_A8R8G8B8_UNORM:
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{
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ubyte *u = (ubyte *) ptr;
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debug_printf("ARGB %d %d %d %d @ %p\n", u[0], u[1], u[2], u[3],
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(void *) u);
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}
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break;
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default:
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debug_printf("other format %s (fix me)\n",
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util_format_name(draw->pt.vertex_element[j].src_format));
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}
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}
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}
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}
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/** Helper code for below */
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static inline void
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prim_restart_loop(struct draw_context *draw,
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const struct pipe_draw_info *info,
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const struct pipe_draw_start_count_bias *draw_info,
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const void *elements)
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{
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const unsigned elt_max = draw->pt.user.eltMax;
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struct pipe_draw_start_count_bias cur = *draw_info;
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cur.count = 0;
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/* The largest index within a loop using the i variable as the index.
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* Used for overflow detection */
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const unsigned MAX_LOOP_IDX = 0xffffffff;
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for (unsigned j = 0; j < draw_info->count; j++) {
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unsigned restart_idx = 0;
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unsigned i = draw_overflow_uadd(draw_info->start, j, MAX_LOOP_IDX);
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switch (draw->pt.user.eltSize) {
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case 1:
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restart_idx = ((const uint8_t*)elements)[i];
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break;
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case 2:
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restart_idx = ((const uint16_t*)elements)[i];
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break;
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case 4:
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restart_idx = ((const uint32_t*)elements)[i];
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break;
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default:
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assert(0 && "bad eltSize in draw_arrays()");
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}
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if (i < elt_max && restart_idx == info->restart_index) {
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if (cur.count > 0) {
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/* draw elts up to prev pos */
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draw_pt_arrays(draw, info->mode, info->index_bias_varies, &cur, 1);
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}
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/* begin new prim at next elt */
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cur.start = i + 1;
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cur.count = 0;
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}
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else {
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cur.count++;
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}
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}
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if (cur.count > 0) {
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draw_pt_arrays(draw, info->mode, info->index_bias_varies, &cur, 1);
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}
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}
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/**
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* For drawing prims with primitive restart enabled.
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* Scan for restart indexes and draw the runs of elements/vertices between
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* the restarts.
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*/
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static void
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draw_pt_arrays_restart(struct draw_context *draw,
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const struct pipe_draw_info *info,
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const struct pipe_draw_start_count_bias *draw_info,
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unsigned num_draws)
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{
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const unsigned prim = info->mode;
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assert(info->primitive_restart);
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if (draw->pt.user.eltSize) {
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/* indexed prims (draw_elements) */
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for (unsigned i = 0; i < num_draws; i++)
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prim_restart_loop(draw, info, &draw_info[i], draw->pt.user.elts);
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}
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else {
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/* Non-indexed prims (draw_arrays).
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* Primitive restart should have been handled in gallium frontends.
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*/
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draw_pt_arrays(draw, prim, info->index_bias_varies, draw_info, num_draws);
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}
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}
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/**
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* Resolve true values within pipe_draw_info.
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* If we're rendering from transform feedback/stream output
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* buffers both the count and max_index need to be computed
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* from the attached stream output target.
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*/
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static void
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resolve_draw_info(const struct pipe_draw_info *raw_info,
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const struct pipe_draw_indirect_info *indirect,
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const struct pipe_draw_start_count_bias *raw_draw,
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struct pipe_draw_info *info,
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struct pipe_draw_start_count_bias *draw,
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struct pipe_vertex_buffer *vertex_buffer)
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{
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memcpy(info, raw_info, sizeof(struct pipe_draw_info));
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memcpy(draw, raw_draw, sizeof(struct pipe_draw_start_count_bias));
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struct draw_so_target *target =
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(struct draw_so_target *)indirect->count_from_stream_output;
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assert(vertex_buffer != NULL);
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draw->count = vertex_buffer->stride == 0 ? 0 :
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target->internal_offset / vertex_buffer->stride;
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/* Stream output draw can not be indexed */
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debug_assert(!info->index_size);
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info->max_index = draw->count - 1;
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}
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/*
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* Loop over all instances and execute draws for them.
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*/
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static void
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draw_instances(struct draw_context *draw,
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unsigned drawid_offset,
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const struct pipe_draw_info *info,
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const struct pipe_draw_start_count_bias *draws,
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unsigned num_draws)
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{
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unsigned instance;
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draw->start_instance = info->start_instance;
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for (instance = 0; instance < info->instance_count; instance++) {
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unsigned instance_idx = instance + info->start_instance;
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draw->instance_id = instance;
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/* check for overflow */
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if (instance_idx < instance ||
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instance_idx < draw->start_instance) {
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/* if we overflown just set the instance id to the max */
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draw->instance_id = 0xffffffff;
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}
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draw->pt.user.drawid = drawid_offset;
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draw_new_instance(draw);
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if (info->primitive_restart) {
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draw_pt_arrays_restart(draw, info, draws, num_draws);
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}
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else {
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draw_pt_arrays(draw, info->mode, info->index_bias_varies, draws, num_draws);
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}
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}
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}
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/**
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* Draw vertex arrays.
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* This is the main entrypoint into the drawing module. If drawing an indexed
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* primitive, the draw_set_indexes() function should have already been called
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* to specify the element/index buffer information.
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*/
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void
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draw_vbo(struct draw_context *draw,
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const struct pipe_draw_info *info,
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unsigned drawid_offset,
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const struct pipe_draw_indirect_info *indirect,
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const struct pipe_draw_start_count_bias *draws,
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unsigned num_draws,
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uint8_t patch_vertices)
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{
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unsigned index_limit;
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unsigned fpstate = util_fpstate_get();
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struct pipe_draw_info resolved_info;
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struct pipe_draw_start_count_bias resolved_draw;
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struct pipe_draw_info *use_info = (struct pipe_draw_info *)info;
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struct pipe_draw_start_count_bias *use_draws = (struct pipe_draw_start_count_bias *)draws;
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if (info->instance_count == 0)
|
|
return;
|
|
|
|
/* Make sure that denorms are treated like zeros. This is
|
|
* the behavior required by D3D10. OpenGL doesn't care.
|
|
*/
|
|
util_fpstate_set_denorms_to_zero(fpstate);
|
|
|
|
if (indirect && indirect->count_from_stream_output) {
|
|
resolve_draw_info(info, indirect, &draws[0], &resolved_info,
|
|
&resolved_draw, &(draw->pt.vertex_buffer[0]));
|
|
use_info = &resolved_info;
|
|
use_draws = &resolved_draw;
|
|
num_draws = 1;
|
|
}
|
|
|
|
if (info->index_size)
|
|
assert(draw->pt.user.elts);
|
|
|
|
draw->pt.user.min_index = use_info->index_bounds_valid ? use_info->min_index : 0;
|
|
draw->pt.user.max_index = use_info->index_bounds_valid ? use_info->max_index : ~0;
|
|
draw->pt.user.eltSize = use_info->index_size ? draw->pt.user.eltSizeIB : 0;
|
|
draw->pt.user.drawid = drawid_offset;
|
|
draw->pt.user.increment_draw_id = use_info->increment_draw_id;
|
|
draw->pt.user.viewid = 0;
|
|
draw->pt.vertices_per_patch = patch_vertices;
|
|
|
|
if (0) {
|
|
for (unsigned i = 0; i < num_draws; i++)
|
|
debug_printf("draw_vbo(mode=%u start=%u count=%u):\n",
|
|
use_info->mode, use_draws[i].start, use_draws[i].count);
|
|
}
|
|
|
|
if (0)
|
|
tgsi_dump(draw->vs.vertex_shader->state.tokens, 0);
|
|
|
|
if (0) {
|
|
unsigned int i;
|
|
debug_printf("Elements:\n");
|
|
for (i = 0; i < draw->pt.nr_vertex_elements; i++) {
|
|
debug_printf(" %u: src_offset=%u inst_div=%u vbuf=%u format=%s\n",
|
|
i,
|
|
draw->pt.vertex_element[i].src_offset,
|
|
draw->pt.vertex_element[i].instance_divisor,
|
|
draw->pt.vertex_element[i].vertex_buffer_index,
|
|
util_format_name(draw->pt.vertex_element[i].src_format));
|
|
}
|
|
debug_printf("Buffers:\n");
|
|
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
|
|
debug_printf(" %u: stride=%u offset=%u size=%d ptr=%p\n",
|
|
i,
|
|
draw->pt.vertex_buffer[i].stride,
|
|
draw->pt.vertex_buffer[i].buffer_offset,
|
|
(int) draw->pt.user.vbuffer[i].size,
|
|
draw->pt.user.vbuffer[i].map);
|
|
}
|
|
}
|
|
|
|
if (0) {
|
|
for (unsigned i = 0; i < num_draws; i++)
|
|
draw_print_arrays(draw, use_info->mode, use_draws[i].start, MIN2(use_draws[i].count, 20),
|
|
use_info->index_bias_varies ? use_draws[i].index_bias : use_draws[0].index_bias);
|
|
}
|
|
|
|
index_limit = util_draw_max_index(draw->pt.vertex_buffer,
|
|
draw->pt.vertex_element,
|
|
draw->pt.nr_vertex_elements,
|
|
use_info);
|
|
#ifdef DRAW_LLVM_AVAILABLE
|
|
if (!draw->llvm)
|
|
#endif
|
|
{
|
|
if (index_limit == 0) {
|
|
/* one of the buffers is too small to do any valid drawing */
|
|
debug_warning("draw: VBO too small to draw anything\n");
|
|
util_fpstate_set(fpstate);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If we're collecting stats then make sure we start from scratch */
|
|
if (draw->collect_statistics) {
|
|
memset(&draw->statistics, 0, sizeof(draw->statistics));
|
|
}
|
|
|
|
draw->pt.max_index = index_limit - 1;
|
|
draw->start_index = use_draws[0].start;
|
|
|
|
/*
|
|
* TODO: We could use draw->pt.max_index to further narrow
|
|
* the min_index/max_index hints given by gallium frontends.
|
|
*/
|
|
|
|
if (use_info->view_mask) {
|
|
u_foreach_bit(i, use_info->view_mask) {
|
|
draw->pt.user.viewid = i;
|
|
draw_instances(draw, drawid_offset, use_info, use_draws, num_draws);
|
|
}
|
|
} else
|
|
draw_instances(draw, drawid_offset, use_info, use_draws, num_draws);
|
|
|
|
/* If requested emit the pipeline statistics for this run */
|
|
if (draw->collect_statistics) {
|
|
draw->render->pipeline_statistics(draw->render, &draw->statistics);
|
|
}
|
|
util_fpstate_set(fpstate);
|
|
}
|