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|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/**
* Tiling engine.
*
* Builds per-tile display lists and executes them on calls to
* lp_setup_flush().
*/
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_pack_color.h"
#include "lp_state.h"
#include "lp_buffer.h"
#include "lp_texture.h"
#include "lp_setup_context.h"
#define SETUP_DEBUG debug_printf
static void set_state( struct setup_context *, unsigned );
void lp_setup_new_cmd_block( struct cmd_block_list *list )
{
struct cmd_block *block = MALLOC_STRUCT(cmd_block);
list->tail->next = block;
list->tail = block;
block->next = NULL;
block->count = 0;
}
void lp_setup_new_data_block( struct data_block_list *list )
{
struct data_block *block = MALLOC_STRUCT(data_block);
list->tail->next = block;
list->tail = block;
block->next = NULL;
block->used = 0;
}
static void
first_triangle( struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4])
{
set_state( setup, SETUP_ACTIVE );
lp_setup_choose_triangle( setup );
setup->triangle( setup, v0, v1, v2 );
}
static void
first_line( struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4])
{
set_state( setup, SETUP_ACTIVE );
lp_setup_choose_line( setup );
setup->line( setup, v0, v1 );
}
static void
first_point( struct setup_context *setup,
const float (*v0)[4])
{
set_state( setup, SETUP_ACTIVE );
lp_setup_choose_point( setup );
setup->point( setup, v0 );
}
static void reset_context( struct setup_context *setup )
{
unsigned i, j;
SETUP_DEBUG("%s\n", __FUNCTION__);
/* Reset derived state */
setup->constants.stored_size = 0;
setup->constants.stored_data = NULL;
setup->fs.stored = NULL;
setup->dirty = ~0;
/* Free all but last binner command lists:
*/
for (i = 0; i < setup->tiles_x; i++) {
for (j = 0; j < setup->tiles_y; j++) {
struct cmd_block_list *list = &setup->tile[i][j];
struct cmd_block *block;
struct cmd_block *tmp;
for (block = list->head; block != list->tail; block = tmp) {
tmp = block->next;
FREE(block);
}
assert(list->tail->next == NULL);
list->head = list->tail;
list->head->count = 0;
}
}
/* Free all but last binned data block:
*/
{
struct data_block_list *list = &setup->data;
struct data_block *block, *tmp;
for (block = list->head; block != list->tail; block = tmp) {
tmp = block->next;
FREE(block);
}
assert(list->tail->next == NULL);
list->head = list->tail;
list->head->used = 0;
}
/* Reset some state:
*/
setup->clear.flags = 0;
/* Have an explicit "start-binning" call and get rid of this
* pointer twiddling?
*/
setup->line = first_line;
setup->point = first_point;
setup->triangle = first_triangle;
}
/* Add a command to all active bins.
*/
static void bin_everywhere( struct setup_context *setup,
lp_rast_cmd cmd,
const union lp_rast_cmd_arg arg )
{
unsigned i, j;
for (i = 0; i < setup->tiles_x; i++)
for (j = 0; j < setup->tiles_y; j++)
bin_command( &setup->tile[i][j], cmd, arg );
}
static void
rasterize_bins( struct setup_context *setup,
boolean write_depth )
{
struct lp_rasterizer *rast = setup->rast;
struct cmd_block *block;
unsigned i,j,k;
SETUP_DEBUG("%s\n", __FUNCTION__);
lp_rast_begin( rast,
setup->fb.cbuf,
setup->fb.zsbuf,
setup->fb.cbuf != NULL,
setup->fb.zsbuf != NULL && write_depth,
setup->fb.width,
setup->fb.height );
for (i = 0; i < setup->tiles_x; i++) {
for (j = 0; j < setup->tiles_y; j++) {
lp_rast_start_tile( rast,
i * TILE_SIZE,
j * TILE_SIZE );
for (block = setup->tile[i][j].head; block; block = block->next) {
for (k = 0; k < block->count; k++) {
block->cmd[k]( rast, block->arg[k] );
}
}
lp_rast_end_tile( rast );
}
}
lp_rast_end( rast );
reset_context( setup );
}
static void
begin_binning( struct setup_context *setup )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
if (!setup->fb.cbuf && !setup->fb.zsbuf) {
setup->fb.width = 0;
setup->fb.height = 0;
}
else if (!setup->fb.zsbuf) {
setup->fb.width = setup->fb.cbuf->width;
setup->fb.height = setup->fb.cbuf->height;
}
else if (!setup->fb.cbuf) {
setup->fb.width = setup->fb.zsbuf->width;
setup->fb.height = setup->fb.zsbuf->height;
}
else {
/* XXX: not sure what we're really supposed to do for
* mis-matched color & depth buffer sizes.
*/
setup->fb.width = MIN2(setup->fb.cbuf->width,
setup->fb.zsbuf->width);
setup->fb.height = MIN2(setup->fb.cbuf->height,
setup->fb.zsbuf->height);
}
setup->tiles_x = align(setup->fb.width, TILE_SIZE) / TILE_SIZE;
setup->tiles_y = align(setup->fb.height, TILE_SIZE) / TILE_SIZE;
if (setup->fb.cbuf) {
if (setup->clear.flags & PIPE_CLEAR_COLOR)
bin_everywhere( setup,
lp_rast_clear_color,
setup->clear.color );
else
bin_everywhere( setup, lp_rast_load_color, lp_rast_arg_null() );
}
if (setup->fb.zsbuf) {
if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL)
bin_everywhere( setup,
lp_rast_clear_zstencil,
setup->clear.zstencil );
else
bin_everywhere( setup, lp_rast_load_zstencil, lp_rast_arg_null() );
}
}
/* This basically bins and then flushes any outstanding full-screen
* clears.
*
* TODO: fast path for fullscreen clears and no triangles.
*/
static void
execute_clears( struct setup_context *setup )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
begin_binning( setup );
rasterize_bins( setup, TRUE );
}
static void
set_state( struct setup_context *setup,
unsigned new_state )
{
unsigned old_state = setup->state;
if (old_state == new_state)
return;
SETUP_DEBUG("%s old %d new %d\n", __FUNCTION__, old_state, new_state);
switch (new_state) {
case SETUP_ACTIVE:
begin_binning( setup );
break;
case SETUP_CLEARED:
if (old_state == SETUP_ACTIVE) {
assert(0);
return;
}
break;
case SETUP_FLUSHED:
if (old_state == SETUP_CLEARED)
execute_clears( setup );
else
rasterize_bins( setup, TRUE );
break;
}
setup->state = new_state;
}
void
lp_setup_flush( struct setup_context *setup,
unsigned flags )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
set_state( setup, SETUP_FLUSHED );
}
void
lp_setup_bind_framebuffer( struct setup_context *setup,
struct pipe_surface *color,
struct pipe_surface *zstencil )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
set_state( setup, SETUP_FLUSHED );
pipe_surface_reference( &setup->fb.cbuf, color );
pipe_surface_reference( &setup->fb.zsbuf, zstencil );
}
void
lp_setup_clear( struct setup_context *setup,
const float *color,
double depth,
unsigned stencil,
unsigned flags )
{
unsigned i;
SETUP_DEBUG("%s state %d\n", __FUNCTION__, setup->state);
if (flags & PIPE_CLEAR_COLOR) {
for (i = 0; i < 4; ++i)
setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
}
if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
setup->clear.zstencil.clear_zstencil =
util_pack_z_stencil(setup->fb.zsbuf->format,
depth,
stencil);
}
if (setup->state == SETUP_ACTIVE) {
/* Add the clear to existing bins. In the unusual case where
* both color and depth-stencilare being cleared, we could
* discard the currently binned scene and start again, but I
* don't see that as being a common usage.
*/
if (flags & PIPE_CLEAR_COLOR)
bin_everywhere( setup,
lp_rast_clear_color,
setup->clear.color );
if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL)
bin_everywhere( setup,
lp_rast_clear_zstencil,
setup->clear.zstencil );
}
else {
/* Put ourselves into the 'pre-clear' state, specifically to try
* and accumulate multiple clears to color and depth_stencil
* buffers which the app or state-tracker might issue
* separately.
*/
set_state( setup, SETUP_CLEARED );
setup->clear.flags |= flags;
}
}
void
lp_setup_set_triangle_state( struct setup_context *setup,
unsigned cull_mode,
boolean ccw_is_frontface)
{
SETUP_DEBUG("%s\n", __FUNCTION__);
setup->ccw_is_frontface = ccw_is_frontface;
setup->cullmode = cull_mode;
setup->triangle = first_triangle;
}
void
lp_setup_set_fs_inputs( struct setup_context *setup,
const struct lp_shader_input *input,
unsigned nr )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
memcpy( setup->fs.input, input, nr * sizeof input[0] );
setup->fs.nr_inputs = nr;
}
void
lp_setup_set_fs( struct setup_context *setup,
struct lp_fragment_shader *fs )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
/* FIXME: reference count */
setup->fs.current.jit_function = fs ? fs->current->jit_function : NULL;
}
void
lp_setup_set_fs_constants(struct setup_context *setup,
struct pipe_buffer *buffer)
{
SETUP_DEBUG("%s\n", __FUNCTION__);
pipe_buffer_reference(&setup->constants.current, buffer);
setup->dirty |= LP_SETUP_NEW_CONSTANTS;
}
void
lp_setup_set_alpha_ref_value( struct setup_context *setup,
float alpha_ref_value )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
setup->dirty |= LP_SETUP_NEW_FS;
}
}
void
lp_setup_set_blend_color( struct setup_context *setup,
const struct pipe_blend_color *blend_color )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
assert(blend_color);
if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
}
}
void
lp_setup_set_sampler_textures( struct setup_context *setup,
unsigned num, struct pipe_texture **texture)
{
struct pipe_texture *dummy;
unsigned i;
SETUP_DEBUG("%s\n", __FUNCTION__);
assert(num <= PIPE_MAX_SAMPLERS);
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
struct pipe_texture *tex = i < num ? texture[i] : NULL;
/* FIXME: hold on to the reference */
dummy = NULL;
pipe_texture_reference(&dummy, tex);
if(tex) {
struct llvmpipe_texture *lp_tex = llvmpipe_texture(tex);
struct lp_jit_texture *jit_tex;
jit_tex = &setup->fs.current.jit_context.textures[i];
jit_tex->width = tex->width[0];
jit_tex->height = tex->height[0];
jit_tex->stride = lp_tex->stride[0];
if(!lp_tex->dt)
jit_tex->data = lp_tex->data;
else
/* FIXME: map the rendertarget */
assert(0);
}
}
setup->dirty |= LP_SETUP_NEW_FS;
}
boolean
lp_setup_is_texture_referenced( struct setup_context *setup,
const struct pipe_texture *texture )
{
/* FIXME */
return PIPE_UNREFERENCED;
}
static INLINE void
lp_setup_update_shader_state( struct setup_context *setup )
{
SETUP_DEBUG("%s\n", __FUNCTION__);
assert(setup->fs.current.jit_function);
if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
uint8_t *stored;
unsigned i, j;
stored = get_data_aligned(&setup->data, 4 * 16, 16);
for (i = 0; i < 4; ++i) {
uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
for (j = 0; j < 16; ++j)
stored[i*4 + j] = c;
}
setup->blend_color.stored = stored;
setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
setup->dirty |= LP_SETUP_NEW_FS;
}
if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
struct pipe_buffer *buffer = setup->constants.current;
if(buffer) {
unsigned current_size = buffer->size;
const void *current_data = llvmpipe_buffer(buffer)->data;
/* TODO: copy only the actually used constants? */
if(setup->constants.stored_size != current_size ||
!setup->constants.stored_data ||
memcmp(setup->constants.stored_data,
current_data,
current_size) != 0) {
void *stored;
stored = get_data(&setup->data, current_size);
if(stored) {
memcpy(stored,
current_data,
current_size);
setup->constants.stored_size = current_size;
setup->constants.stored_data = stored;
}
}
}
else {
setup->constants.stored_size = 0;
setup->constants.stored_data = NULL;
}
setup->fs.current.jit_context.constants = setup->constants.stored_data;
setup->dirty |= LP_SETUP_NEW_FS;
}
if(setup->dirty & LP_SETUP_NEW_FS) {
if(!setup->fs.stored ||
memcmp(setup->fs.stored,
&setup->fs.current,
sizeof setup->fs.current) != 0) {
struct lp_rast_state *stored;
stored = get_data(&setup->data, sizeof *stored);
if(stored) {
memcpy(stored,
&setup->fs.current,
sizeof setup->fs.current);
setup->fs.stored = stored;
}
}
}
setup->dirty = 0;
assert(setup->fs.stored);
}
/* Stubs for lines & points for now:
*/
void
lp_setup_point(struct setup_context *setup,
const float (*v0)[4])
{
lp_setup_update_shader_state(setup);
setup->point( setup, v0 );
}
void
lp_setup_line(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4])
{
lp_setup_update_shader_state(setup);
setup->line( setup, v0, v1 );
}
void
lp_setup_tri(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4])
{
SETUP_DEBUG("%s\n", __FUNCTION__);
lp_setup_update_shader_state(setup);
setup->triangle( setup, v0, v1, v2 );
}
void
lp_setup_destroy( struct setup_context *setup )
{
unsigned i, j;
reset_context( setup );
pipe_buffer_reference(&setup->constants.current, NULL);
for (i = 0; i < TILES_X; i++)
for (j = 0; j < TILES_Y; j++)
FREE(setup->tile[i][j].head);
FREE(setup->data.head);
lp_rast_destroy( setup->rast );
FREE( setup );
}
/**
* Create a new primitive tiling engine. Currently also creates a
* rasterizer to use with it.
*/
struct setup_context *
lp_setup_create( struct pipe_screen *screen )
{
struct setup_context *setup = CALLOC_STRUCT(setup_context);
unsigned i, j;
setup->rast = lp_rast_create( screen );
if (!setup->rast)
goto fail;
for (i = 0; i < TILES_X; i++)
for (j = 0; j < TILES_Y; j++)
setup->tile[i][j].head =
setup->tile[i][j].tail = CALLOC_STRUCT(cmd_block);
setup->data.head =
setup->data.tail = CALLOC_STRUCT(data_block);
setup->triangle = first_triangle;
setup->line = first_line;
setup->point = first_point;
setup->dirty = ~0;
return setup;
fail:
FREE(setup);
return NULL;
}
|