/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors: Ben Skeggs
*
*/
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "translate/translate.h"
#include "nouveau/nv_object.xml.h"
#include "nv30-40_3d.xml.h"
#include "nv30_context.h"
#include "nv30_resource.h"
struct push_context {
struct nouveau_pushbuf *push;
const void *idxbuf;
float edgeflag;
int edgeflag_attr;
uint32_t vertex_words;
uint32_t packet_vertex_limit;
struct translate *translate;
boolean primitive_restart;
uint32_t prim;
uint32_t restart_index;
};
static INLINE unsigned
prim_restart_search_i08(uint8_t *elts, unsigned push, uint8_t index)
{
unsigned i;
for (i = 0; i < push; ++i)
if (elts[i] == index)
break;
return i;
}
static INLINE unsigned
prim_restart_search_i16(uint16_t *elts, unsigned push, uint16_t index)
{
unsigned i;
for (i = 0; i < push; ++i)
if (elts[i] == index)
break;
return i;
}
static INLINE unsigned
prim_restart_search_i32(uint32_t *elts, unsigned push, uint32_t index)
{
unsigned i;
for (i = 0; i < push; ++i)
if (elts[i] == index)
break;
return i;
}
static void
emit_vertices_i08(struct push_context *ctx, unsigned start, unsigned count)
{
uint8_t *elts = (uint8_t *)ctx->idxbuf + start;
while (count) {
unsigned push = MIN2(count, ctx->packet_vertex_limit);
unsigned size, nr;
nr = push;
if (ctx->primitive_restart)
nr = prim_restart_search_i08(elts, push, ctx->restart_index);
size = ctx->vertex_words * nr;
BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
ctx->translate->run_elts8(ctx->translate, elts, nr, 0, ctx->push->cur);
ctx->push->cur += size;
count -= nr;
elts += nr;
if (nr != push) {
BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
PUSH_DATA (ctx->push, ctx->restart_index);
count--;
elts++;
}
}
}
static void
emit_vertices_i16(struct push_context *ctx, unsigned start, unsigned count)
{
uint16_t *elts = (uint16_t *)ctx->idxbuf + start;
while (count) {
unsigned push = MIN2(count, ctx->packet_vertex_limit);
unsigned size, nr;
nr = push;
if (ctx->primitive_restart)
nr = prim_restart_search_i16(elts, push, ctx->restart_index);
size = ctx->vertex_words * nr;
BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
ctx->translate->run_elts16(ctx->translate, elts, nr, 0, ctx->push->cur);
ctx->push->cur += size;
count -= nr;
elts += nr;
if (nr != push) {
BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
PUSH_DATA (ctx->push, ctx->restart_index);
count--;
elts++;
}
}
}
static void
emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count)
{
uint32_t *elts = (uint32_t *)ctx->idxbuf + start;
while (count) {
unsigned push = MIN2(count, ctx->packet_vertex_limit);
unsigned size, nr;
nr = push;
if (ctx->primitive_restart)
nr = prim_restart_search_i32(elts, push, ctx->restart_index);
size = ctx->vertex_words * nr;
BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
ctx->translate->run_elts(ctx->translate, elts, nr, 0, ctx->push->cur);
ctx->push->cur += size;
count -= nr;
elts += nr;
if (nr != push) {
BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
PUSH_DATA (ctx->push, ctx->restart_index);
count--;
elts++;
}
}
}
static void
emit_vertices_seq(struct push_context *ctx, unsigned start, unsigned count)
{
while (count) {
unsigned push = MIN2(count, ctx->packet_vertex_limit);
unsigned size = ctx->vertex_words * push;
BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
ctx->translate->run(ctx->translate, start, push, 0, ctx->push->cur);
ctx->push->cur += size;
count -= push;
start += push;
}
}
void
nv30_push_vbo(struct nv30_context *nv30, const struct pipe_draw_info *info)
{
struct push_context ctx;
unsigned i, index_size;
boolean apply_bias = info->indexed && info->index_bias;
ctx.push = nv30->base.pushbuf;
ctx.translate = nv30->vertex->translate;
ctx.packet_vertex_limit = nv30->vertex->vtx_per_packet_max;
ctx.vertex_words = nv30->vertex->vtx_size;
for (i = 0; i < nv30->num_vtxbufs; ++i) {
uint8_t *data;
struct pipe_vertex_buffer *vb = &nv30->vtxbuf[i];
struct nv04_resource *res = nv04_resource(vb->buffer);
data = nouveau_resource_map_offset(&nv30->base, res,
vb->buffer_offset, NOUVEAU_BO_RD);
if (apply_bias)
data += info->index_bias * vb->stride;
ctx.translate->set_buffer(ctx.translate, i, data, vb->stride, ~0);
}
if (info->indexed) {
if (nv30->idxbuf.buffer)
ctx.idxbuf = nouveau_resource_map_offset(&nv30->base,
nv04_resource(nv30->idxbuf.buffer), nv30->idxbuf.offset,
NOUVEAU_BO_RD);
else
ctx.idxbuf = nv30->idxbuf.user_buffer;
if (!ctx.idxbuf) {
nv30_state_release(nv30);
return;
}
index_size = nv30->idxbuf.index_size;
ctx.primitive_restart = info->primitive_restart;
ctx.restart_index = info->restart_index;
} else {
ctx.idxbuf = NULL;
index_size = 0;
ctx.primitive_restart = FALSE;
ctx.restart_index = 0;
}
if (nv30->screen->eng3d->oclass >= NV40_3D_CLASS) {
BEGIN_NV04(ctx.push, NV40_3D(PRIM_RESTART_ENABLE), 2);
PUSH_DATA (ctx.push, info->primitive_restart);
PUSH_DATA (ctx.push, info->restart_index);
nv30->state.prim_restart = info->primitive_restart;
}
ctx.prim = nv30_prim_gl(info->mode);
PUSH_RESET(ctx.push, BUFCTX_IDXBUF);
BEGIN_NV04(ctx.push, NV30_3D(VERTEX_BEGIN_END), 1);
PUSH_DATA (ctx.push, ctx.prim);
switch (index_size) {
case 0:
emit_vertices_seq(&ctx, info->start, info->count);
break;
case 1:
emit_vertices_i08(&ctx, info->start, info->count);
break;
case 2:
emit_vertices_i16(&ctx, info->start, info->count);
break;
case 4:
emit_vertices_i32(&ctx, info->start, info->count);
break;
default:
assert(0);
break;
}
BEGIN_NV04(ctx.push, NV30_3D(VERTEX_BEGIN_END), 1);
PUSH_DATA (ctx.push, NV30_3D_VERTEX_BEGIN_END_STOP);
if (info->indexed)
nouveau_resource_unmap(nv04_resource(nv30->idxbuf.buffer));
for (i = 0; i < nv30->num_vtxbufs; ++i)
nouveau_resource_unmap(nv04_resource(nv30->vtxbuf[i].buffer));
nv30_state_release(nv30);
}