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/*
* Copyright 2008 VMware, Inc.
* 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
* on 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
* VMWARE AND/OR THEIR 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.
*/
/**
* Vertex fetch/store/convert code. This functionality is used in two places:
* 1. Vertex fetch/convert - to grab vertex data from incoming vertex
* arrays and convert to format needed by vertex shaders.
* 2. Vertex store/emit - to convert simple float[][4] vertex attributes
* (which is the organization used throughout the draw/prim pipeline) to
* hardware-specific formats and emit into hardware vertex buffers.
*
*
* Authors:
* Keith Whitwell <keithw@vmware.com>
*/
#ifndef _TRANSLATE_H
#define _TRANSLATE_H
#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
#include "pipe/p_state.h"
/**
* Translate has to work on one more attribute because
* the draw module has to be able to pass the vertex
* position even if the fragment shader already consumes
* PIPE_MAX_ATTRIBS inputs.
*/
#define TRANSLATE_MAX_ATTRIBS (PIPE_MAX_ATTRIBS + 1)
enum translate_element_type {
TRANSLATE_ELEMENT_NORMAL,
TRANSLATE_ELEMENT_INSTANCE_ID
};
struct translate_element
{
enum translate_element_type type;
enum pipe_format input_format;
enum pipe_format output_format;
unsigned input_buffer:8;
unsigned input_offset:24;
unsigned instance_divisor;
unsigned output_offset;
};
struct translate_key {
unsigned output_stride;
unsigned nr_elements;
struct translate_element element[TRANSLATE_MAX_ATTRIBS];
};
struct translate;
typedef void (PIPE_CDECL *run_elts_func)(struct translate *,
const unsigned *elts,
unsigned count,
unsigned start_instance,
unsigned instance_id,
void *output_buffer);
typedef void (PIPE_CDECL *run_elts16_func)(struct translate *,
const uint16_t *elts,
unsigned count,
unsigned start_instance,
unsigned instance_id,
void *output_buffer);
typedef void (PIPE_CDECL *run_elts8_func)(struct translate *,
const uint8_t *elts,
unsigned count,
unsigned start_instance,
unsigned instance_id,
void *output_buffer);
typedef void (PIPE_CDECL *run_func)(struct translate *,
unsigned start,
unsigned count,
unsigned start_instance,
unsigned instance_id,
void *output_buffer);
struct translate {
struct translate_key key;
void (*release)( struct translate * );
void (*set_buffer)( struct translate *,
unsigned i,
const void *ptr,
unsigned stride,
unsigned max_index );
run_elts_func run_elts;
run_elts16_func run_elts16;
run_elts8_func run_elts8;
run_func run;
};
struct translate *translate_create( const struct translate_key *key );
boolean translate_is_output_format_supported(enum pipe_format format);
static INLINE int translate_keysize( const struct translate_key *key )
{
return 2 * sizeof(int) + key->nr_elements * sizeof(struct translate_element);
}
static INLINE int translate_key_compare( const struct translate_key *a,
const struct translate_key *b )
{
int keysize_a = translate_keysize(a);
int keysize_b = translate_keysize(b);
if (keysize_a != keysize_b) {
return keysize_a - keysize_b;
}
return memcmp(a, b, keysize_a);
}
static INLINE void translate_key_sanitize( struct translate_key *a )
{
int keysize = translate_keysize(a);
char *ptr = (char *)a;
memset(ptr + keysize, 0, sizeof(*a) - keysize);
}
/*******************************************************************************
* Private:
*/
struct translate *translate_sse2_create( const struct translate_key *key );
struct translate *translate_generic_create( const struct translate_key *key );
boolean translate_generic_is_output_format_supported(enum pipe_format format);
#endif
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