/**************************************************************************
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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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* Interface between 'draw' module's output and the llvmpipe rasterizer/setup
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* code. When the 'draw' module has finished filling a vertex buffer, the
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* draw_arrays() functions below will be called. Loop over the vertices and
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* call the point/line/tri setup functions.
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*
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* Authors
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* Brian Paul
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*/
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#include "lp_setup_context.h"
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#include "lp_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 "util/u_memory.h"
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#define LP_MAX_VBUF_INDEXES 1024
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#define LP_MAX_VBUF_SIZE 4096
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/** cast wrapper */
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static struct lp_setup_context *
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lp_setup_context(struct vbuf_render *vbr)
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{
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return (struct lp_setup_context *) vbr;
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}
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static const struct vertex_info *
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lp_setup_get_vertex_info(struct vbuf_render *vbr)
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{
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struct lp_setup_context *setup = lp_setup_context(vbr);
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/* Vertex size/info depends on the latest state.
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* The draw module may have issued additional state-change commands.
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*/
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lp_setup_update_state(setup, FALSE);
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return setup->vertex_info;
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}
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static boolean
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lp_setup_allocate_vertices(struct vbuf_render *vbr,
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ushort vertex_size, ushort nr_vertices)
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{
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struct lp_setup_context *setup = lp_setup_context(vbr);
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unsigned size = vertex_size * nr_vertices;
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if (setup->vertex_buffer_size < size) {
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align_free(setup->vertex_buffer);
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setup->vertex_buffer = align_malloc(size, 16);
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setup->vertex_buffer_size = size;
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}
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setup->vertex_size = vertex_size;
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setup->nr_vertices = nr_vertices;
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return setup->vertex_buffer != NULL;
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}
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static void
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lp_setup_release_vertices(struct vbuf_render *vbr)
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{
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/* keep the old allocation for next time */
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}
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static void *
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lp_setup_map_vertices(struct vbuf_render *vbr)
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{
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struct lp_setup_context *setup = lp_setup_context(vbr);
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return setup->vertex_buffer;
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}
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static void
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lp_setup_unmap_vertices(struct vbuf_render *vbr,
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ushort min_index,
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ushort max_index )
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{
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MAYBE_UNUSED struct lp_setup_context *setup = lp_setup_context(vbr);
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assert( setup->vertex_buffer_size >= (max_index+1) * setup->vertex_size );
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/* do nothing */
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}
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static void
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lp_setup_set_primitive(struct vbuf_render *vbr, enum pipe_prim_type prim)
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{
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lp_setup_context(vbr)->prim = prim;
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}
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typedef const float (*const_float4_ptr)[4];
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static inline const_float4_ptr get_vert( const void *vertex_buffer,
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int index,
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int stride )
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{
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return (const_float4_ptr)((char *)vertex_buffer + index * stride);
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}
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/**
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* draw elements / indexed primitives
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*/
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static void
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lp_setup_draw_elements(struct vbuf_render *vbr, const ushort *indices, uint nr)
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{
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struct lp_setup_context *setup = lp_setup_context(vbr);
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const unsigned stride = setup->vertex_info->size * sizeof(float);
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const void *vertex_buffer = setup->vertex_buffer;
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const boolean flatshade_first = setup->flatshade_first;
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unsigned i;
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assert(setup->setup.variant);
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if (!lp_setup_update_state(setup, TRUE))
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return;
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switch (setup->prim) {
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case PIPE_PRIM_POINTS:
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for (i = 0; i < nr; i++) {
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setup->point( setup,
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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break;
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case PIPE_PRIM_LINES:
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for (i = 1; i < nr; i += 2) {
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setup->line( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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break;
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case PIPE_PRIM_LINE_STRIP:
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for (i = 1; i < nr; i ++) {
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setup->line( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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break;
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case PIPE_PRIM_LINE_LOOP:
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for (i = 1; i < nr; i ++) {
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setup->line( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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if (nr) {
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setup->line( setup,
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get_vert(vertex_buffer, indices[nr-1], stride),
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get_vert(vertex_buffer, indices[0], stride) );
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}
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break;
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case PIPE_PRIM_TRIANGLES:
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for (i = 2; i < nr; i += 3) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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break;
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case PIPE_PRIM_TRIANGLE_STRIP:
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if (flatshade_first) {
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for (i = 2; i < nr; i += 1) {
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/* emit first triangle vertex as first triangle vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
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get_vert(vertex_buffer, indices[i-(i&1)], stride) );
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}
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}
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else {
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for (i = 2; i < nr; i += 1) {
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/* emit last triangle vertex as last triangle vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
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get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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}
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break;
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case PIPE_PRIM_TRIANGLE_FAN:
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if (flatshade_first) {
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for (i = 2; i < nr; i += 1) {
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/* emit first non-spoke vertex as first vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[0], stride) );
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}
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}
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else {
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for (i = 2; i < nr; i += 1) {
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/* emit last non-spoke vertex as last vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[0], stride),
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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}
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break;
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case PIPE_PRIM_QUADS:
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/* GL quads don't follow provoking vertex convention */
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if (flatshade_first) {
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/* emit last quad vertex as first triangle vertex */
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for (i = 3; i < nr; i += 4) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[i-3], stride),
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get_vert(vertex_buffer, indices[i-2], stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i-1], stride) );
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}
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}
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else {
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/* emit last quad vertex as last triangle vertex */
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for (i = 3; i < nr; i += 4) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-3], stride),
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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}
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break;
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case PIPE_PRIM_QUAD_STRIP:
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/* GL quad strips don't follow provoking vertex convention */
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if (flatshade_first) {
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/* emit last quad vertex as first triangle vertex */
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for (i = 3; i < nr; i += 2) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[i-3], stride),
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get_vert(vertex_buffer, indices[i-2], stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-3], stride) );
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}
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}
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else {
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/* emit last quad vertex as last triangle vertex */
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for (i = 3; i < nr; i += 2) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-3], stride),
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get_vert(vertex_buffer, indices[i-2], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-3], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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}
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break;
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case PIPE_PRIM_POLYGON:
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/* Almost same as tri fan but the _first_ vertex specifies the flat
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* shading color.
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*/
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if (flatshade_first) {
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/* emit first polygon vertex as first triangle vertex */
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for (i = 2; i < nr; i += 1) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[0], stride),
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride) );
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}
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}
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else {
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/* emit first polygon vertex as last triangle vertex */
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for (i = 2; i < nr; i += 1) {
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setup->triangle( setup,
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get_vert(vertex_buffer, indices[i-1], stride),
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get_vert(vertex_buffer, indices[i-0], stride),
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get_vert(vertex_buffer, indices[0], stride) );
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}
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}
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break;
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default:
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assert(0);
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}
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}
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/**
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* This function is hit when the draw module is working in pass-through mode.
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* It's up to us to convert the vertex array into point/line/tri prims.
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*/
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static void
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lp_setup_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
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{
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struct lp_setup_context *setup = lp_setup_context(vbr);
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const unsigned stride = setup->vertex_info->size * sizeof(float);
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const void *vertex_buffer =
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(void *) get_vert(setup->vertex_buffer, start, stride);
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const boolean flatshade_first = setup->flatshade_first;
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unsigned i;
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if (!lp_setup_update_state(setup, TRUE))
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return;
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switch (setup->prim) {
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case PIPE_PRIM_POINTS:
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for (i = 0; i < nr; i++) {
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setup->point( setup,
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get_vert(vertex_buffer, i-0, stride) );
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}
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break;
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case PIPE_PRIM_LINES:
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for (i = 1; i < nr; i += 2) {
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setup->line( setup,
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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break;
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case PIPE_PRIM_LINE_STRIP:
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for (i = 1; i < nr; i ++) {
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setup->line( setup,
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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break;
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case PIPE_PRIM_LINE_LOOP:
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for (i = 1; i < nr; i ++) {
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setup->line( setup,
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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if (nr) {
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setup->line( setup,
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get_vert(vertex_buffer, nr-1, stride),
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get_vert(vertex_buffer, 0, stride) );
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}
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break;
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case PIPE_PRIM_TRIANGLES:
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for (i = 2; i < nr; i += 3) {
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setup->triangle( setup,
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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break;
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case PIPE_PRIM_TRIANGLE_STRIP:
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if (flatshade_first) {
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for (i = 2; i < nr; i++) {
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/* emit first triangle vertex as first triangle vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i+(i&1)-1, stride),
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get_vert(vertex_buffer, i-(i&1), stride) );
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}
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}
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else {
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for (i = 2; i < nr; i++) {
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/* emit last triangle vertex as last triangle vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, i+(i&1)-2, stride),
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get_vert(vertex_buffer, i-(i&1)-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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}
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break;
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case PIPE_PRIM_TRIANGLE_FAN:
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if (flatshade_first) {
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for (i = 2; i < nr; i += 1) {
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/* emit first non-spoke vertex as first vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, 0, stride) );
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}
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}
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else {
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for (i = 2; i < nr; i += 1) {
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/* emit last non-spoke vertex as last vertex */
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setup->triangle( setup,
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get_vert(vertex_buffer, 0, stride),
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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}
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break;
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case PIPE_PRIM_QUADS:
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/* GL quads don't follow provoking vertex convention */
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if (flatshade_first) {
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/* emit last quad vertex as first triangle vertex */
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for (i = 3; i < nr; i += 4) {
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setup->triangle( setup,
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, i-3, stride),
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get_vert(vertex_buffer, i-2, stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i-1, stride) );
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}
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}
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else {
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/* emit last quad vertex as last triangle vertex */
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for (i = 3; i < nr; i += 4) {
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setup->triangle( setup,
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get_vert(vertex_buffer, i-3, stride),
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i-0, stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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}
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break;
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case PIPE_PRIM_QUAD_STRIP:
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/* GL quad strips don't follow provoking vertex convention */
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if (flatshade_first) {
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/* emit last quad vertex as first triangle vertex */
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for (i = 3; i < nr; i += 2) {
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setup->triangle( setup,
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, i-3, stride),
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get_vert(vertex_buffer, i-2, stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-3, stride) );
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}
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}
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else {
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/* emit last quad vertex as last triangle vertex */
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for (i = 3; i < nr; i += 2) {
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setup->triangle( setup,
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get_vert(vertex_buffer, i-3, stride),
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get_vert(vertex_buffer, i-2, stride),
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get_vert(vertex_buffer, i-0, stride) );
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setup->triangle( setup,
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-3, stride),
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get_vert(vertex_buffer, i-0, stride) );
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}
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}
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break;
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case PIPE_PRIM_POLYGON:
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/* Almost same as tri fan but the _first_ vertex specifies the flat
|
* shading color.
|
*/
|
if (flatshade_first) {
|
/* emit first polygon vertex as first triangle vertex */
|
for (i = 2; i < nr; i += 1) {
|
setup->triangle( setup,
|
get_vert(vertex_buffer, 0, stride),
|
get_vert(vertex_buffer, i-1, stride),
|
get_vert(vertex_buffer, i-0, stride) );
|
}
|
}
|
else {
|
/* emit first polygon vertex as last triangle vertex */
|
for (i = 2; i < nr; i += 1) {
|
setup->triangle( setup,
|
get_vert(vertex_buffer, i-1, stride),
|
get_vert(vertex_buffer, i-0, stride),
|
get_vert(vertex_buffer, 0, stride) );
|
}
|
}
|
break;
|
|
default:
|
assert(0);
|
}
|
}
|
|
|
|
static void
|
lp_setup_vbuf_destroy(struct vbuf_render *vbr)
|
{
|
struct lp_setup_context *setup = lp_setup_context(vbr);
|
if (setup->vertex_buffer) {
|
align_free(setup->vertex_buffer);
|
setup->vertex_buffer = NULL;
|
}
|
lp_setup_destroy(setup);
|
}
|
|
/*
|
* FIXME: it is unclear if primitives_storage_needed (which is generally
|
* the same as pipe query num_primitives_generated) should increase
|
* if SO is disabled for d3d10, but for GL we definitely need to
|
* increase num_primitives_generated and this is only called for active
|
* SO. If it must not increase for d3d10 need to disambiguate the counters
|
* in the driver and do some work for getting correct values, if it should
|
* increase too should call this from outside streamout code.
|
*/
|
static void
|
lp_setup_so_info(struct vbuf_render *vbr, uint primitives, uint prim_generated)
|
{
|
struct lp_setup_context *setup = lp_setup_context(vbr);
|
struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
|
|
lp->so_stats.num_primitives_written += primitives;
|
lp->so_stats.primitives_storage_needed += prim_generated;
|
}
|
|
static void
|
lp_setup_pipeline_statistics(
|
struct vbuf_render *vbr,
|
const struct pipe_query_data_pipeline_statistics *stats)
|
{
|
struct lp_setup_context *setup = lp_setup_context(vbr);
|
struct llvmpipe_context *llvmpipe = llvmpipe_context(setup->pipe);
|
|
llvmpipe->pipeline_statistics.ia_vertices +=
|
stats->ia_vertices;
|
llvmpipe->pipeline_statistics.ia_primitives +=
|
stats->ia_primitives;
|
llvmpipe->pipeline_statistics.vs_invocations +=
|
stats->vs_invocations;
|
llvmpipe->pipeline_statistics.gs_invocations +=
|
stats->gs_invocations;
|
llvmpipe->pipeline_statistics.gs_primitives +=
|
stats->gs_primitives;
|
if (!llvmpipe_rasterization_disabled(llvmpipe)) {
|
llvmpipe->pipeline_statistics.c_invocations +=
|
stats->c_invocations;
|
} else {
|
llvmpipe->pipeline_statistics.c_invocations = 0;
|
}
|
}
|
|
/**
|
* Create the post-transform vertex handler for the given context.
|
*/
|
void
|
lp_setup_init_vbuf(struct lp_setup_context *setup)
|
{
|
setup->base.max_indices = LP_MAX_VBUF_INDEXES;
|
setup->base.max_vertex_buffer_bytes = LP_MAX_VBUF_SIZE;
|
|
setup->base.get_vertex_info = lp_setup_get_vertex_info;
|
setup->base.allocate_vertices = lp_setup_allocate_vertices;
|
setup->base.map_vertices = lp_setup_map_vertices;
|
setup->base.unmap_vertices = lp_setup_unmap_vertices;
|
setup->base.set_primitive = lp_setup_set_primitive;
|
setup->base.draw_elements = lp_setup_draw_elements;
|
setup->base.draw_arrays = lp_setup_draw_arrays;
|
setup->base.release_vertices = lp_setup_release_vertices;
|
setup->base.destroy = lp_setup_vbuf_destroy;
|
setup->base.set_stream_output_info = lp_setup_so_info;
|
setup->base.pipeline_statistics = lp_setup_pipeline_statistics;
|
}
|
