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/**************************************************************************
*
* Copyright 2010 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 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
**************************************************************************/
#include "u_math.h"
#include "u_format_other.h"
void
util_format_r9g9b9e5_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
const float *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
unsigned i, unsigned j)
{
}
void
util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
const float *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
unsigned i, unsigned j)
{
}
void
util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
void
util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
}
/*
* PIPE_FORMAT_R8G8Bx_SNORM
*
* A.k.a. D3DFMT_CxV8U8
*/
static uint8_t
r8g8bx_derive(int16_t r, int16_t g)
{
/* Derive blue from red and green components.
* Apparently, we must always use integers to perform calculations,
* otherwise the results won't match D3D's CxV8U8 definition.
*/
return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
}
void
util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
unsigned x, y;
for(y = 0; y < height; y += 1) {
float *dst = dst_row;
const uint16_t *src = (const uint16_t *)src_row;
for(x = 0; x < width; x += 1) {
uint16_t value = *src++;
int16_t r, g;
#ifdef PIPE_ARCH_BIG_ENDIAN
value = util_bswap32(value);
#endif
r = ((int16_t)(value << 8)) >> 8;
g = ((int16_t)(value << 0)) >> 8;
dst[0] = (float)(r * (1.0f/0x7f)); /* r */
dst[1] = (float)(g * (1.0f/0x7f)); /* g */
dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
dst[3] = 1.0f; /* a */
dst += 4;
}
src_row += src_stride;
dst_row += dst_stride/sizeof(*dst_row);
}
}
void
util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
unsigned x, y;
for(y = 0; y < height; y += 1) {
uint8_t *dst = dst_row;
const uint16_t *src = (const uint16_t *)src_row;
for(x = 0; x < width; x += 1) {
uint16_t value = *src++;
int16_t r, g;
#ifdef PIPE_ARCH_BIG_ENDIAN
value = util_bswap32(value);
#endif
r = ((int16_t)(value << 8)) >> 8;
g = ((int16_t)(value << 0)) >> 8;
dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
dst[2] = r8g8bx_derive(r, g); /* b */
dst[3] = 255; /* a */
dst += 4;
}
src_row += src_stride;
dst_row += dst_stride/sizeof(*dst_row);
}
}
void
util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
const float *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
unsigned x, y;
for(y = 0; y < height; y += 1) {
const float *src = src_row;
uint16_t *dst = (uint16_t *)dst_row;
for(x = 0; x < width; x += 1) {
uint16_t value = 0;
value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
#ifdef PIPE_ARCH_BIG_ENDIAN
value = util_bswap32(value);
#endif
*dst++ = value;
src += 4;
}
dst_row += dst_stride;
src_row += src_stride/sizeof(*src_row);
}
}
void
util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height)
{
unsigned x, y;
for(y = 0; y < height; y += 1) {
const uint8_t *src = src_row;
uint16_t *dst = (uint16_t *)dst_row;
for(x = 0; x < width; x += 1) {
uint16_t value = 0;
value |= src[0] >> 1;
value |= (src[1] >> 1) << 8;
#ifdef PIPE_ARCH_BIG_ENDIAN
value = util_bswap32(value);
#endif
*dst++ = value;
src += 4;
}
dst_row += dst_stride;
src_row += src_stride/sizeof(*src_row);
}
}
void
util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
unsigned i, unsigned j)
{
uint16_t value = *(const uint16_t *)src;
int16_t r, g;
#ifdef PIPE_ARCH_BIG_ENDIAN
value = util_bswap32(value);
#endif
r = ((int16_t)(value << 8)) >> 8;
g = ((int16_t)(value << 0)) >> 8;
dst[0] = r * (1.0f/0x7f); /* r */
dst[1] = g * (1.0f/0x7f); /* g */
dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
dst[3] = 1.0f; /* a */
}
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