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/**************************************************************************
*
* Copyright 2009 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.
*
**************************************************************************/
/**
* @file
* Surface utility functions.
*
* @author Brian Paul
*/
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "pipe/p_state.h"
#include "util/u_format.h"
#include "util/u_inlines.h"
#include "util/u_rect.h"
#include "util/u_surface.h"
#include "util/u_pack_color.h"
void
u_surface_default_template(struct pipe_surface *view,
const struct pipe_resource *texture,
unsigned bind)
{
view->format = texture->format;
view->u.tex.level = 0;
view->u.tex.first_layer = 0;
view->u.tex.last_layer = 0;
/* XXX should filter out all non-rt/ds bind flags ? */
view->usage = bind;
}
/**
* Helper to quickly create an RGBA rendering surface of a certain size.
* \param textureOut returns the new texture
* \param surfaceOut returns the new surface
* \return TRUE for success, FALSE if failure
*/
boolean
util_create_rgba_surface(struct pipe_context *pipe,
uint width, uint height,
uint bind,
struct pipe_resource **textureOut,
struct pipe_surface **surfaceOut)
{
static const enum pipe_format rgbaFormats[] = {
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_A8R8G8B8_UNORM,
PIPE_FORMAT_A8B8G8R8_UNORM,
PIPE_FORMAT_NONE
};
const uint target = PIPE_TEXTURE_2D;
enum pipe_format format = PIPE_FORMAT_NONE;
struct pipe_resource templ;
struct pipe_surface surf_templ;
struct pipe_screen *screen = pipe->screen;
uint i;
/* Choose surface format */
for (i = 0; rgbaFormats[i]; i++) {
if (screen->is_format_supported(screen, rgbaFormats[i],
target, 0, bind)) {
format = rgbaFormats[i];
break;
}
}
if (format == PIPE_FORMAT_NONE)
return FALSE; /* unable to get an rgba format!?! */
/* create texture */
memset(&templ, 0, sizeof(templ));
templ.target = target;
templ.format = format;
templ.last_level = 0;
templ.width0 = width;
templ.height0 = height;
templ.depth0 = 1;
templ.array_size = 1;
templ.bind = bind;
*textureOut = screen->resource_create(screen, &templ);
if (!*textureOut)
return FALSE;
/* create surface */
memset(&surf_templ, 0, sizeof(surf_templ));
u_surface_default_template(&surf_templ, *textureOut, bind);
/* create surface / view into texture */
*surfaceOut = pipe->create_surface(pipe,
*textureOut,
&surf_templ);
if (!*surfaceOut) {
pipe_resource_reference(textureOut, NULL);
return FALSE;
}
return TRUE;
}
/**
* Release the surface and texture from util_create_rgba_surface().
*/
void
util_destroy_rgba_surface(struct pipe_resource *texture,
struct pipe_surface *surface)
{
pipe_surface_reference(&surface, NULL);
pipe_resource_reference(&texture, NULL);
}
/**
* Fallback function for pipe->resource_copy_region().
* Note: (X,Y)=(0,0) is always the upper-left corner.
*/
void
util_resource_copy_region(struct pipe_context *pipe,
struct pipe_resource *dst,
unsigned dst_level,
unsigned dst_x, unsigned dst_y, unsigned dst_z,
struct pipe_resource *src,
unsigned src_level,
const struct pipe_box *src_box)
{
struct pipe_transfer *src_trans, *dst_trans;
void *dst_map;
const void *src_map;
enum pipe_format src_format, dst_format;
unsigned w = src_box->width;
unsigned h = src_box->height;
assert(src && dst);
if (!src || !dst)
return;
src_format = src->format;
dst_format = dst->format;
src_trans = pipe_get_transfer(pipe,
src,
src_level,
src_box->z,
PIPE_TRANSFER_READ,
src_box->x, src_box->y, w, h);
dst_trans = pipe_get_transfer(pipe,
dst,
dst_level,
dst_z,
PIPE_TRANSFER_WRITE,
dst_x, dst_y, w, h);
assert(util_format_get_blocksize(dst_format) == util_format_get_blocksize(src_format));
assert(util_format_get_blockwidth(dst_format) == util_format_get_blockwidth(src_format));
assert(util_format_get_blockheight(dst_format) == util_format_get_blockheight(src_format));
src_map = pipe->transfer_map(pipe, src_trans);
dst_map = pipe->transfer_map(pipe, dst_trans);
assert(src_map);
assert(dst_map);
if (src_map && dst_map) {
if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
memcpy(dst_map, src_map, w);
} else {
util_copy_rect(dst_map,
dst_format,
dst_trans->stride,
0, 0,
w, h,
src_map,
src_trans->stride,
0,
0);
}
}
pipe->transfer_unmap(pipe, src_trans);
pipe->transfer_unmap(pipe, dst_trans);
pipe->transfer_destroy(pipe, src_trans);
pipe->transfer_destroy(pipe, dst_trans);
}
#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
/**
* Fallback for pipe->clear_render_target() function.
* XXX this looks too hackish to be really useful.
* cpp > 4 looks like a gross hack at best...
* Plus can't use these transfer fallbacks when clearing
* multisampled surfaces for instance.
*/
void
util_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const float *rgba,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct pipe_transfer *dst_trans;
void *dst_map;
union util_color uc;
assert(dst->texture);
if (!dst->texture)
return;
/* XXX: should handle multiple layers */
dst_trans = pipe_get_transfer(pipe,
dst->texture,
dst->u.tex.level,
dst->u.tex.first_layer,
PIPE_TRANSFER_WRITE,
dstx, dsty, width, height);
dst_map = pipe->transfer_map(pipe, dst_trans);
assert(dst_map);
if (dst_map) {
assert(dst_trans->stride > 0);
util_pack_color(rgba, dst->texture->format, &uc);
util_fill_rect(dst_map, dst->texture->format,
dst_trans->stride,
0, 0, width, height, &uc);
}
pipe->transfer_unmap(pipe, dst_trans);
pipe->transfer_destroy(pipe, dst_trans);
}
/**
* Fallback for pipe->clear_stencil() function.
* sw fallback doesn't look terribly useful here.
* Plus can't use these transfer fallbacks when clearing
* multisampled surfaces for instance.
*/
void
util_clear_depth_stencil(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned clear_flags,
double depth,
unsigned stencil,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct pipe_transfer *dst_trans;
ubyte *dst_map;
boolean need_rmw = FALSE;
if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) &&
((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
util_format_is_depth_and_stencil(dst->format))
need_rmw = TRUE;
assert(dst->texture);
if (!dst->texture)
return;
dst_trans = pipe_get_transfer(pipe,
dst->texture,
dst->u.tex.level,
dst->u.tex.first_layer,
(need_rmw ? PIPE_TRANSFER_READ_WRITE :
PIPE_TRANSFER_WRITE),
dstx, dsty, width, height);
dst_map = pipe->transfer_map(pipe, dst_trans);
assert(dst_map);
if (dst_map) {
unsigned dst_stride = dst_trans->stride;
unsigned zstencil = util_pack_z_stencil(dst->texture->format, depth, stencil);
unsigned i, j;
assert(dst_trans->stride > 0);
switch (util_format_get_blocksize(dst->format)) {
case 1:
assert(dst->format == PIPE_FORMAT_S8_USCALED);
if(dst_stride == width)
memset(dst_map, (ubyte) zstencil, height * width);
else {
for (i = 0; i < height; i++) {
memset(dst_map, (ubyte) zstencil, width);
dst_map += dst_stride;
}
}
break;
case 2:
assert(dst->format == PIPE_FORMAT_Z16_UNORM);
for (i = 0; i < height; i++) {
uint16_t *row = (uint16_t *)dst_map;
for (j = 0; j < width; j++)
*row++ = (uint16_t) zstencil;
dst_map += dst_stride;
}
break;
case 4:
if (!need_rmw) {
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst_map;
for (j = 0; j < width; j++)
*row++ = zstencil;
dst_map += dst_stride;
}
}
else {
uint32_t dst_mask;
if (dst->format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)
dst_mask = 0xffffff00;
else {
assert(dst->format == PIPE_FORMAT_S8_USCALED_Z24_UNORM);
dst_mask = 0xffffff;
}
if (clear_flags & PIPE_CLEAR_DEPTH)
dst_mask = ~dst_mask;
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst_map;
for (j = 0; j < width; j++) {
uint32_t tmp = *row & dst_mask;
*row++ = tmp | (zstencil & ~dst_mask);
}
dst_map += dst_stride;
}
}
break;
case 8:
default:
assert(0);
break;
}
}
pipe->transfer_unmap(pipe, dst_trans);
pipe->transfer_destroy(pipe, dst_trans);
}
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