/**************************************************************************
*
* Copyright 2008 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Brian Paul
*/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "pipe/p_config.h"
#include "draw_vs.h"
#if defined(PIPE_ARCH_PPC)
#include "pipe/p_shader_tokens.h"
#include "draw_private.h"
#include "draw_context.h"
#include "rtasm/rtasm_cpu.h"
#include "rtasm/rtasm_ppc.h"
#include "tgsi/tgsi_ppc.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_exec.h"
typedef void (PIPE_CDECL *codegen_function) (float (*inputs)[4][4],
float (*outputs)[4][4],
float (*temps)[4][4],
float (*immeds)[4],
float (*consts)[4],
const float *builtins);
struct draw_ppc_vertex_shader {
struct draw_vertex_shader base;
struct ppc_function ppc_program;
codegen_function func;
};
static void
vs_ppc_prepare( struct draw_vertex_shader *base,
struct draw_context *draw )
{
/* nothing */
}
/**
* Simplified vertex shader interface for the pt paths. Given the
* complexity of code-generating all the above operations together,
* it's time to try doing all the other stuff separately.
*/
static void
vs_ppc_run_linear( struct draw_vertex_shader *base,
const float (*input)[4],
float (*output)[4],
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
unsigned count,
unsigned input_stride,
unsigned output_stride )
{
struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
unsigned int i;
#define MAX_VERTICES 4
/* loop over verts */
for (i = 0; i < count; i += MAX_VERTICES) {
const uint max_vertices = MIN2(MAX_VERTICES, count - i);
PIPE_ALIGN_VAR(16) float inputs_soa[PIPE_MAX_SHADER_INPUTS][4][4];
PIPE_ALIGN_VAR(16) float outputs_soa[PIPE_MAX_SHADER_OUTPUTS][4][4];
PIPE_ALIGN_VAR(16) float temps_soa[TGSI_EXEC_NUM_TEMPS][4][4];
uint attr;
/* convert (up to) four input verts to SoA format */
for (attr = 0; attr < base->info.num_inputs; attr++) {
const float *vIn = (const float *) input;
uint vert;
for (vert = 0; vert < max_vertices; vert++) {
#if 0
if (attr==0)
printf("Input v%d a%d: %f %f %f %f\n",
vert, attr, vIn[0], vIn[1], vIn[2], vIn[3]);
#endif
inputs_soa[attr][0][vert] = vIn[attr * 4 + 0];
inputs_soa[attr][1][vert] = vIn[attr * 4 + 1];
inputs_soa[attr][2][vert] = vIn[attr * 4 + 2];
inputs_soa[attr][3][vert] = vIn[attr * 4 + 3];
vIn += input_stride / 4;
}
}
/* run compiled shader
*/
shader->func(inputs_soa, outputs_soa, temps_soa,
(float (*)[4]) shader->base.immediates,
(float (*)[4])constants[0],
ppc_builtin_constants);
/* convert (up to) four output verts from SoA back to AoS format */
for (attr = 0; attr < base->info.num_outputs; attr++) {
float *vOut = (float *) output;
uint vert;
for (vert = 0; vert < max_vertices; vert++) {
vOut[attr * 4 + 0] = outputs_soa[attr][0][vert];
vOut[attr * 4 + 1] = outputs_soa[attr][1][vert];
vOut[attr * 4 + 2] = outputs_soa[attr][2][vert];
vOut[attr * 4 + 3] = outputs_soa[attr][3][vert];
#if 0
if (attr==0)
printf("Output v%d a%d: %f %f %f %f\n",
vert, attr, vOut[0], vOut[1], vOut[2], vOut[3]);
#endif
vOut += output_stride / 4;
}
}
/* advance to next group of four input/output verts */
input = (const float (*)[4])((const char *)input + input_stride * max_vertices);
output = (float (*)[4])((char *)output + output_stride * max_vertices);
}
}
static void
vs_ppc_delete( struct draw_vertex_shader *base )
{
struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
ppc_release_func( &shader->ppc_program );
align_free( (void *) shader->base.immediates );
FREE( (void*) shader->base.state.tokens );
FREE( shader );
}
struct draw_vertex_shader *
draw_create_vs_ppc(struct draw_context *draw,
const struct pipe_shader_state *templ)
{
struct draw_ppc_vertex_shader *vs;
vs = CALLOC_STRUCT( draw_ppc_vertex_shader );
if (vs == NULL)
return NULL;
/* we make a private copy of the tokens */
vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
if (!vs->base.state.tokens)
goto fail;
tgsi_scan_shader(templ->tokens, &vs->base.info);
vs->base.draw = draw;
vs->base.create_variant = draw_vs_create_variant_generic;
vs->base.prepare = vs_ppc_prepare;
vs->base.run_linear = vs_ppc_run_linear;
vs->base.delete = vs_ppc_delete;
vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 *
sizeof(float), 16);
ppc_init_func( &vs->ppc_program );
#if 0
ppc_print_code(&vs->ppc_program, TRUE);
ppc_indent(&vs->ppc_program, 8);
#endif
if (!tgsi_emit_ppc( (struct tgsi_token *) vs->base.state.tokens,
&vs->ppc_program,
(float (*)[4]) vs->base.immediates,
TRUE ))
goto fail;
vs->func = (codegen_function) ppc_get_func( &vs->ppc_program );
if (!vs->func) {
goto fail;
}
return &vs->base;
fail:
/*
debug_error("tgsi_emit_ppc() failed, falling back to interpreter\n");
*/
ppc_release_func( &vs->ppc_program );
FREE(vs);
return NULL;
}
#else /* PIPE_ARCH_PPC */
struct draw_vertex_shader *
draw_create_vs_ppc( struct draw_context *draw,
const struct pipe_shader_state *templ )
{
return (void *) 0;
}
#endif /* PIPE_ARCH_PPC */