/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_prim.h"
#include "draw/draw_context.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_vertex.h"
#include "draw/draw_prim_assembler.h"
#include "draw/draw_pt.h"
#include "draw/draw_vs.h"
#include "draw/draw_gs.h"
struct fetch_pipeline_middle_end {
struct draw_pt_middle_end base;
struct draw_context *draw;
struct pt_emit *emit;
struct pt_so_emit *so_emit;
struct pt_fetch *fetch;
struct pt_post_vs *post_vs;
unsigned vertex_data_offset;
unsigned vertex_size;
unsigned input_prim;
unsigned opt;
};
/**
* Prepare/validate middle part of the vertex pipeline.
* NOTE: if you change this function, also look at the LLVM
* function llvm_middle_end_prepare() for similar changes.
*/
static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
unsigned prim,
unsigned opt,
unsigned *max_vertices )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_context *draw = fpme->draw;
struct draw_vertex_shader *vs = draw->vs.vertex_shader;
struct draw_geometry_shader *gs = draw->gs.geometry_shader;
unsigned i;
unsigned instance_id_index = ~0;
const unsigned gs_out_prim = (gs ? gs->output_primitive :
u_assembled_prim(prim));
/* Add one to num_outputs because the pipeline occasionally tags on
* an additional texcoord, eg for AA lines.
*/
unsigned nr = MAX2( vs->info.num_inputs,
vs->info.num_outputs + 1 );
if (gs) {
nr = MAX2(nr, gs->info.num_outputs + 1);
}
/* Scan for instanceID system value.
*/
for (i = 0; i < vs->info.num_inputs; i++) {
if (vs->info.input_semantic_name[i] == TGSI_SEMANTIC_INSTANCEID) {
instance_id_index = i;
break;
}
}
fpme->input_prim = prim;
fpme->opt = opt;
/* Always leave room for the vertex header whether we need it or
* not. It's hard to get rid of it in particular because of the
* viewport code in draw_pt_post_vs.c.
*/
fpme->vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
draw_pt_fetch_prepare( fpme->fetch,
vs->info.num_inputs,
fpme->vertex_size,
instance_id_index );
draw_pt_post_vs_prepare( fpme->post_vs,
draw->clip_xy,
draw->clip_z,
draw->clip_user,
draw->guard_band_xy,
draw->identity_viewport,
draw->rasterizer->clip_halfz,
(draw->vs.edgeflag_output ? TRUE : FALSE) );
draw_pt_so_emit_prepare( fpme->so_emit, FALSE );
if (!(opt & PT_PIPELINE)) {
draw_pt_emit_prepare( fpme->emit,
gs_out_prim,
max_vertices );
*max_vertices = MAX2( *max_vertices, 4096 );
}
else {
/* limit max fetches by limiting max_vertices */
*max_vertices = 4096;
}
/* No need to prepare the shader.
*/
vs->prepare(vs, draw);
}
static void
fetch_pipeline_bind_parameters(struct draw_pt_middle_end *middle)
{
/* No-op since the vertex shader executor and drawing pipeline
* just grab the constants, viewport, etc. from the draw context state.
*/
}
static void fetch( struct pt_fetch *fetch,
const struct draw_fetch_info *fetch_info,
char *output)
{
if (fetch_info->linear) {
draw_pt_fetch_run_linear( fetch,
fetch_info->start,
fetch_info->count,
output );
}
else {
draw_pt_fetch_run( fetch,
fetch_info->elts,
fetch_info->count,
output );
}
}
static void pipeline(struct fetch_pipeline_middle_end *fpme,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
if (prim_info->linear)
draw_pipeline_run_linear( fpme->draw,
vert_info,
prim_info);
else
draw_pipeline_run( fpme->draw,
vert_info,
prim_info );
}
static void emit(struct pt_emit *emit,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
if (prim_info->linear) {
draw_pt_emit_linear(emit, vert_info, prim_info);
}
else {
draw_pt_emit(emit, vert_info, prim_info);
}
}
static void draw_vertex_shader_run(struct draw_vertex_shader *vshader,
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS],
const struct draw_vertex_info *input_verts,
struct draw_vertex_info *output_verts )
{
output_verts->vertex_size = input_verts->vertex_size;
output_verts->stride = input_verts->vertex_size;
output_verts->count = input_verts->count;
output_verts->verts =
(struct vertex_header *)MALLOC(output_verts->vertex_size *
align(output_verts->count, 4));
vshader->run_linear(vshader,
(const float (*)[4])input_verts->verts->data,
( float (*)[4])output_verts->verts->data,
constants,
const_size,
input_verts->count,
input_verts->vertex_size,
input_verts->vertex_size);
}
static void fetch_pipeline_generic( struct draw_pt_middle_end *middle,
const struct draw_fetch_info *fetch_info,
const struct draw_prim_info *in_prim_info )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_context *draw = fpme->draw;
struct draw_vertex_shader *vshader = draw->vs.vertex_shader;
struct draw_geometry_shader *gshader = draw->gs.geometry_shader;
struct draw_prim_info gs_prim_info;
struct draw_vertex_info fetched_vert_info;
struct draw_vertex_info vs_vert_info;
struct draw_vertex_info gs_vert_info;
struct draw_vertex_info *vert_info;
struct draw_prim_info ia_prim_info;
struct draw_vertex_info ia_vert_info;
const struct draw_prim_info *prim_info = in_prim_info;
boolean free_prim_info = FALSE;
unsigned opt = fpme->opt;
fetched_vert_info.count = fetch_info->count;
fetched_vert_info.vertex_size = fpme->vertex_size;
fetched_vert_info.stride = fpme->vertex_size;
fetched_vert_info.verts =
(struct vertex_header *)MALLOC(fpme->vertex_size *
align(fetch_info->count, 4));
if (!fetched_vert_info.verts) {
return;
}
if (draw->collect_statistics) {
draw->statistics.ia_vertices += prim_info->count;
draw->statistics.ia_primitives +=
u_decomposed_prims_for_vertices(prim_info->prim, fetch_info->count);
draw->statistics.vs_invocations += fetch_info->count;
}
/* Fetch into our vertex buffer.
*/
fetch( fpme->fetch, fetch_info, (char *)fetched_vert_info.verts );
/* Finished with fetch:
*/
fetch_info = NULL;
vert_info = &fetched_vert_info;
/* Run the shader, note that this overwrites the data[] parts of
* the pipeline verts.
*/
if (fpme->opt & PT_SHADE) {
draw_vertex_shader_run(vshader,
draw->pt.user.vs_constants,
draw->pt.user.vs_constants_size,
vert_info,
&vs_vert_info);
FREE(vert_info->verts);
vert_info = &vs_vert_info;
}
if ((fpme->opt & PT_SHADE) && gshader) {
draw_geometry_shader_run(gshader,
draw->pt.user.gs_constants,
draw->pt.user.gs_constants_size,
vert_info,
prim_info,
&vshader->info,
&gs_vert_info,
&gs_prim_info);
FREE(vert_info->verts);
vert_info = &gs_vert_info;
prim_info = &gs_prim_info;
} else {
if (draw_prim_assembler_is_required(draw, prim_info, vert_info)) {
draw_prim_assembler_run(draw, prim_info, vert_info,
&ia_prim_info, &ia_vert_info);
if (ia_vert_info.count) {
FREE(vert_info->verts);
vert_info = &ia_vert_info;
prim_info = &ia_prim_info;
free_prim_info = TRUE;
}
}
}
if (prim_info->count == 0) {
debug_printf("GS/IA didn't emit any vertices!\n");
FREE(vert_info->verts);
if (free_prim_info) {
FREE(prim_info->primitive_lengths);
}
return;
}
/* Stream output needs to be done before clipping.
*
* XXX: Stream output surely needs to respect the prim_info->elt
* lists.
*/
draw_pt_so_emit( fpme->so_emit, vert_info, prim_info );
draw_stats_clipper_primitives(draw, prim_info);
/*
* if there's no position, need to stop now, or the latter stages
* will try to access non-existent position output.
*/
if (draw_current_shader_position_output(draw) != -1) {
if (draw_pt_post_vs_run( fpme->post_vs, vert_info, prim_info ))
{
opt |= PT_PIPELINE;
}
/* Do we need to run the pipeline?
*/
if (opt & PT_PIPELINE) {
pipeline( fpme, vert_info, prim_info );
}
else {
emit( fpme->emit, vert_info, prim_info );
}
}
FREE(vert_info->verts);
if (free_prim_info) {
FREE(prim_info->primitive_lengths);
}
}
static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
const unsigned *fetch_elts,
unsigned fetch_count,
const ushort *draw_elts,
unsigned draw_count,
unsigned prim_flags )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_fetch_info fetch_info;
struct draw_prim_info prim_info;
fetch_info.linear = FALSE;
fetch_info.start = 0;
fetch_info.elts = fetch_elts;
fetch_info.count = fetch_count;
prim_info.linear = FALSE;
prim_info.start = 0;
prim_info.count = draw_count;
prim_info.elts = draw_elts;
prim_info.prim = fpme->input_prim;
prim_info.flags = prim_flags;
prim_info.primitive_count = 1;
prim_info.primitive_lengths = &draw_count;
fetch_pipeline_generic( middle, &fetch_info, &prim_info );
}
static void fetch_pipeline_linear_run( struct draw_pt_middle_end *middle,
unsigned start,
unsigned count,
unsigned prim_flags)
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_fetch_info fetch_info;
struct draw_prim_info prim_info;
fetch_info.linear = TRUE;
fetch_info.start = start;
fetch_info.count = count;
fetch_info.elts = NULL;
prim_info.linear = TRUE;
prim_info.start = 0;
prim_info.count = count;
prim_info.elts = NULL;
prim_info.prim = fpme->input_prim;
prim_info.flags = prim_flags;
prim_info.primitive_count = 1;
prim_info.primitive_lengths = &count;
fetch_pipeline_generic( middle, &fetch_info, &prim_info );
}
static boolean fetch_pipeline_linear_run_elts( struct draw_pt_middle_end *middle,
unsigned start,
unsigned count,
const ushort *draw_elts,
unsigned draw_count,
unsigned prim_flags )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_fetch_info fetch_info;
struct draw_prim_info prim_info;
fetch_info.linear = TRUE;
fetch_info.start = start;
fetch_info.count = count;
fetch_info.elts = NULL;
prim_info.linear = FALSE;
prim_info.start = 0;
prim_info.count = draw_count;
prim_info.elts = draw_elts;
prim_info.prim = fpme->input_prim;
prim_info.flags = prim_flags;
prim_info.primitive_count = 1;
prim_info.primitive_lengths = &draw_count;
fetch_pipeline_generic( middle, &fetch_info, &prim_info );
return TRUE;
}
static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
{
/* nothing to do */
}
static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
if (fpme->fetch)
draw_pt_fetch_destroy( fpme->fetch );
if (fpme->emit)
draw_pt_emit_destroy( fpme->emit );
if (fpme->so_emit)
draw_pt_so_emit_destroy( fpme->so_emit );
if (fpme->post_vs)
draw_pt_post_vs_destroy( fpme->post_vs );
FREE(middle);
}
struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
{
struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
if (!fpme)
goto fail;
fpme->base.prepare = fetch_pipeline_prepare;
fpme->base.bind_parameters = fetch_pipeline_bind_parameters;
fpme->base.run = fetch_pipeline_run;
fpme->base.run_linear = fetch_pipeline_linear_run;
fpme->base.run_linear_elts = fetch_pipeline_linear_run_elts;
fpme->base.finish = fetch_pipeline_finish;
fpme->base.destroy = fetch_pipeline_destroy;
fpme->draw = draw;
fpme->fetch = draw_pt_fetch_create( draw );
if (!fpme->fetch)
goto fail;
fpme->post_vs = draw_pt_post_vs_create( draw );
if (!fpme->post_vs)
goto fail;
fpme->emit = draw_pt_emit_create( draw );
if (!fpme->emit)
goto fail;
fpme->so_emit = draw_pt_so_emit_create( draw );
if (!fpme->so_emit)
goto fail;
return &fpme->base;
fail:
if (fpme)
fetch_pipeline_destroy( &fpme->base );
return NULL;
}