/**************************************************************************
*
* Copyright 2007 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 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 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.
*
**************************************************************************/
/**
* RGBA/float tile get/put functions.
* Usable both by drivers and gallium frontends.
*/
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/format/u_format.h"
#include "util/format/u_format_bptc.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_surface.h"
#include "util/u_tile.h"
/**
* Move raw block of pixels from transfer object to user memory.
*/
void
pipe_get_tile_raw(struct pipe_transfer *pt,
const void *src,
uint x, uint y, uint w, uint h,
void *dst, int dst_stride)
{
if (dst_stride == 0)
dst_stride = util_format_get_stride(pt->resource->format, w);
if (u_clip_tile(x, y, &w, &h, &pt->box))
return;
util_copy_rect(dst, pt->resource->format, dst_stride, 0, 0, w, h, src, pt->stride, x, y);
}
/**
* Move raw block of pixels from user memory to transfer object.
*/
void
pipe_put_tile_raw(struct pipe_transfer *pt,
void *dst,
uint x, uint y, uint w, uint h,
const void *src, int src_stride)
{
enum pipe_format format = pt->resource->format;
if (src_stride == 0)
src_stride = util_format_get_stride(format, w);
if (u_clip_tile(x, y, &w, &h, &pt->box))
return;
util_copy_rect(dst, format, pt->stride, x, y, w, h, src, src_stride, 0, 0);
}
/** Convert short in [-32768,32767] to GLfloat in [-1.0,1.0] */
#define SHORT_TO_FLOAT(S) ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
#define UNCLAMPED_FLOAT_TO_SHORT(us, f) \
us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )
/*** PIPE_FORMAT_Z16_UNORM ***/
/**
* Return each Z value as four floats in [0,1].
*/
static void
z16_get_tile_rgba(const ushort *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
const float scale = 1.0f / 65535.0f;
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = *src++ * scale;
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_Z32_UNORM ***/
/**
* Return each Z value as four floats in [0,1].
*/
static void
z32_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
const double scale = 1.0 / (double) 0xffffffff;
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (float) (*src++ * scale);
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_Z24_UNORM_S8_UINT ***/
/**
* Return Z component as four float in [0,1]. Stencil part ignored.
*/
static void
s8z24_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
const double scale = 1.0 / ((1 << 24) - 1);
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (float) (scale * (*src++ & 0xffffff));
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_S8_UINT_Z24_UNORM ***/
/**
* Return Z component as four float in [0,1]. Stencil part ignored.
*/
static void
z24s8_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
const double scale = 1.0 / ((1 << 24) - 1);
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (float) (scale * (*src++ >> 8));
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_S8X24_UINT ***/
/**
* Return S component as four uint32_t in [0..255]. Z part ignored.
*/
static void
s8x24_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
uint32_t *pRow = (uint32_t *)p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = ((*src++ >> 24) & 0xff);
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_X24S8_UINT ***/
/**
* Return S component as four uint32_t in [0..255]. Z part ignored.
*/
static void
x24s8_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
uint32_t *pRow = (uint32_t *)p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (*src++ & 0xff);
}
p += dst_stride;
}
}
/**
* Return S component as four uint32_t in [0..255]. Z part ignored.
*/
static void
s8_get_tile_rgba(const unsigned char *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
uint32_t *pRow = (uint32_t *)p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (*src++ & 0xff);
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_Z32_FLOAT ***/
/**
* Return each Z value as four floats in [0,1].
*/
static void
z32f_get_tile_rgba(const float *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = *src++;
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ***/
/**
* Return each Z value as four floats in [0,1].
*/
static void
z32f_x24s8_get_tile_rgba(const float *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
float *pRow = p;
for (j = 0; j < w; j++, pRow += 4) {
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = *src;
src += 2;
}
p += dst_stride;
}
}
/*** PIPE_FORMAT_X32_S8X24_UINT ***/
/**
* Return S component as four uint32_t in [0..255]. Z part ignored.
*/
static void
x32_s8_get_tile_rgba(const unsigned *src,
unsigned w, unsigned h,
float *p,
unsigned dst_stride)
{
unsigned i, j;
for (i = 0; i < h; i++) {
uint32_t *pRow = (uint32_t *)p;
for (j = 0; j < w; j++, pRow += 4) {
src++;
pRow[0] =
pRow[1] =
pRow[2] =
pRow[3] = (*src++ & 0xff);
}
p += dst_stride;
}
}
void
pipe_put_tile_rgba(struct pipe_transfer *pt,
void *dst,
uint x, uint y, uint w, uint h,
enum pipe_format format, const void *p)
{
unsigned src_stride = w * 4;
if (u_clip_tile(x, y, &w, &h, &pt->box))
return;
/* While we do generate RGBA tiles for z/s for softpipe's texture fetch
* path, we never have to store from "RGBA" to Z/S.
*/
if (util_format_is_depth_or_stencil(format))
return;
util_format_write_4(format,
p, src_stride * sizeof(float),
dst, pt->stride,
x, y, w, h);
}
void
pipe_get_tile_rgba(struct pipe_transfer *pt,
const void *src,
uint x, uint y, uint w, uint h,
enum pipe_format format,
void *dst)
{
unsigned dst_stride = w * 4;
void *packed;
if (u_clip_tile(x, y, &w, &h, &pt->box)) {
return;
}
packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
if (!packed) {
return;
}
if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
assert((x & 1) == 0);
}
pipe_get_tile_raw(pt, src, x, y, w, h, packed, 0);
switch (format) {
case PIPE_FORMAT_Z16_UNORM:
z16_get_tile_rgba((ushort *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_Z32_UNORM:
z32_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
case PIPE_FORMAT_Z24X8_UNORM:
s8z24_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_S8_UINT:
s8_get_tile_rgba((unsigned char *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_X24S8_UINT:
s8x24_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
case PIPE_FORMAT_X8Z24_UNORM:
z24s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_S8X24_UINT:
x24s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_Z32_FLOAT:
z32f_get_tile_rgba((float *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
z32f_x24s8_get_tile_rgba((float *) packed, w, h, dst, dst_stride);
break;
case PIPE_FORMAT_X32_S8X24_UINT:
x32_s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
break;
default:
util_format_read_4(format,
dst, dst_stride * sizeof(float),
packed, util_format_get_stride(format, w),
0, 0, w, h);
}
FREE(packed);
}