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/*
* Copyright (C) 2009 Nicolai Haehnle.
*
* 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, 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 (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 NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 "radeon_code.h"
#include <stdlib.h>
#include <string.h>
#include "radeon_program.h"
void rc_constants_init(struct rc_constant_list * c)
{
memset(c, 0, sizeof(*c));
}
/**
* Copy a constants structure, assuming that the destination structure
* is not initialized.
*/
void rc_constants_copy(struct rc_constant_list * dst, struct rc_constant_list * src)
{
dst->Constants = malloc(sizeof(struct rc_constant) * src->Count);
memcpy(dst->Constants, src->Constants, sizeof(struct rc_constant) * src->Count);
dst->Count = src->Count;
dst->_Reserved = src->Count;
}
void rc_constants_destroy(struct rc_constant_list * c)
{
free(c->Constants);
memset(c, 0, sizeof(*c));
}
unsigned rc_constants_add(struct rc_constant_list * c, struct rc_constant * constant)
{
unsigned index = c->Count;
if (c->Count >= c->_Reserved) {
struct rc_constant * newlist;
c->_Reserved = c->_Reserved * 2;
if (!c->_Reserved)
c->_Reserved = 16;
newlist = malloc(sizeof(struct rc_constant) * c->_Reserved);
memcpy(newlist, c->Constants, sizeof(struct rc_constant) * c->Count);
free(c->Constants);
c->Constants = newlist;
}
c->Constants[index] = *constant;
c->Count++;
return index;
}
/**
* Add a state vector to the constant list, while trying to avoid duplicates.
*/
unsigned rc_constants_add_state(struct rc_constant_list * c, unsigned state0, unsigned state1)
{
unsigned index;
struct rc_constant constant;
for(index = 0; index < c->Count; ++index) {
if (c->Constants[index].Type == RC_CONSTANT_STATE) {
if (c->Constants[index].u.State[0] == state0 &&
c->Constants[index].u.State[1] == state1)
return index;
}
}
memset(&constant, 0, sizeof(constant));
constant.Type = RC_CONSTANT_STATE;
constant.Size = 4;
constant.u.State[0] = state0;
constant.u.State[1] = state1;
return rc_constants_add(c, &constant);
}
/**
* Add an immediate vector to the constant list, while trying to avoid
* duplicates.
*/
unsigned rc_constants_add_immediate_vec4(struct rc_constant_list * c, const float * data)
{
unsigned index;
struct rc_constant constant;
for(index = 0; index < c->Count; ++index) {
if (c->Constants[index].Type == RC_CONSTANT_IMMEDIATE) {
if (!memcmp(c->Constants[index].u.Immediate, data, sizeof(float)*4))
return index;
}
}
memset(&constant, 0, sizeof(constant));
constant.Type = RC_CONSTANT_IMMEDIATE;
constant.Size = 4;
memcpy(constant.u.Immediate, data, sizeof(float) * 4);
return rc_constants_add(c, &constant);
}
/**
* Add an immediate scalar to the constant list, while trying to avoid
* duplicates.
*/
unsigned rc_constants_add_immediate_scalar(struct rc_constant_list * c, float data, unsigned * swizzle)
{
unsigned index;
int free_index = -1;
struct rc_constant constant;
for(index = 0; index < c->Count; ++index) {
if (c->Constants[index].Type == RC_CONSTANT_IMMEDIATE) {
for(unsigned comp = 0; comp < c->Constants[index].Size; ++comp) {
if (c->Constants[index].u.Immediate[comp] == data) {
*swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
return index;
}
}
if (c->Constants[index].Size < 4)
free_index = index;
}
}
if (free_index >= 0) {
unsigned comp = c->Constants[free_index].Size++;
c->Constants[free_index].u.Immediate[comp] = data;
*swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
return free_index;
}
memset(&constant, 0, sizeof(constant));
constant.Type = RC_CONSTANT_IMMEDIATE;
constant.Size = 1;
constant.u.Immediate[0] = data;
*swizzle = RC_SWIZZLE_XXXX;
return rc_constants_add(c, &constant);
}
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