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/*
* Copyright (C) 2009-2010 Francisco Jerez.
* 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 "main/bufferobj.h"
#include "nouveau_driver.h"
#include "nouveau_array.h"
#include "nouveau_bufferobj.h"
static void
get_array_extract(struct nouveau_array *a, extract_u_t *extract_u,
extract_f_t *extract_f)
{
#define EXTRACT(in_t, out_t, k) \
({ \
auto out_t f(struct nouveau_array *, int, int); \
out_t f(struct nouveau_array *a, int i, int j) { \
in_t x = ((in_t *)(a->buf + i * a->stride))[j]; \
\
return (out_t)x / (k); \
}; \
f; \
});
switch (a->type) {
case GL_BYTE:
*extract_u = EXTRACT(char, unsigned, 1);
*extract_f = EXTRACT(char, float, SCHAR_MAX);
break;
case GL_UNSIGNED_BYTE:
*extract_u = EXTRACT(unsigned char, unsigned, 1);
*extract_f = EXTRACT(unsigned char, float, UCHAR_MAX);
break;
case GL_SHORT:
*extract_u = EXTRACT(short, unsigned, 1);
*extract_f = EXTRACT(short, float, SHRT_MAX);
break;
case GL_UNSIGNED_SHORT:
*extract_u = EXTRACT(unsigned short, unsigned, 1);
*extract_f = EXTRACT(unsigned short, float, USHRT_MAX);
break;
case GL_INT:
*extract_u = EXTRACT(int, unsigned, 1);
*extract_f = EXTRACT(int, float, INT_MAX);
break;
case GL_UNSIGNED_INT:
*extract_u = EXTRACT(unsigned int, unsigned, 1);
*extract_f = EXTRACT(unsigned int, float, UINT_MAX);
break;
case GL_FLOAT:
*extract_u = EXTRACT(float, unsigned, 1.0 / UINT_MAX);
*extract_f = EXTRACT(float, float, 1);
break;
default:
assert(0);
}
}
void
nouveau_init_array(struct nouveau_array *a, int attr, int stride,
int fields, int type, struct gl_buffer_object *obj,
const void *ptr, GLboolean map)
{
a->attr = attr;
a->stride = stride;
a->fields = fields;
a->type = type;
a->buf = NULL;
if (obj) {
if (nouveau_bufferobj_hw(obj)) {
struct nouveau_bufferobj *nbo =
to_nouveau_bufferobj(obj);
nouveau_bo_ref(nbo->bo, &a->bo);
a->offset = (intptr_t)ptr;
if (map) {
nouveau_bo_map(a->bo, NOUVEAU_BO_RD);
a->buf = a->bo->map + a->offset;
}
} else {
nouveau_bo_ref(NULL, &a->bo);
a->offset = 0;
if (map)
a->buf = ADD_POINTERS(
nouveau_bufferobj_sys(obj), ptr);
}
}
if (a->buf)
get_array_extract(a, &a->extract_u, &a->extract_f);
}
void
nouveau_deinit_array(struct nouveau_array *a)
{
if (a->bo) {
if (a->bo->map)
nouveau_bo_unmap(a->bo);
}
a->buf = NULL;
a->fields = 0;
}
void
nouveau_cleanup_array(struct nouveau_array *a)
{
nouveau_deinit_array(a);
nouveau_bo_ref(NULL, &a->bo);
}
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