/**************************************************************************
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*
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* Copyright 2009 VMware, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Surface utility functions.
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*
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* @author Brian Paul
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*/
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#include "pipe/p_defines.h"
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#include "pipe/p_screen.h"
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#include "pipe/p_state.h"
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#include "util/u_format.h"
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#include "util/u_inlines.h"
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#include "util/u_rect.h"
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#include "util/u_surface.h"
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#include "util/u_pack_color.h"
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/**
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* Initialize a pipe_surface object. 'view' is considered to have
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* uninitialized contents.
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*/
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void
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u_surface_default_template(struct pipe_surface *surf,
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const struct pipe_resource *texture)
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{
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memset(surf, 0, sizeof(*surf));
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surf->format = texture->format;
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}
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/**
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* Copy 2D rect from one place to another.
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* Position and sizes are in pixels.
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* src_stride may be negative to do vertical flip of pixels from source.
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*/
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void
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util_copy_rect(ubyte * dst,
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enum pipe_format format,
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unsigned dst_stride,
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unsigned dst_x,
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unsigned dst_y,
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unsigned width,
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unsigned height,
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const ubyte * src,
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int src_stride,
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unsigned src_x,
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unsigned src_y)
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{
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unsigned i;
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int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
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int blocksize = util_format_get_blocksize(format);
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int blockwidth = util_format_get_blockwidth(format);
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int blockheight = util_format_get_blockheight(format);
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assert(blocksize > 0);
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assert(blockwidth > 0);
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assert(blockheight > 0);
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dst_x /= blockwidth;
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dst_y /= blockheight;
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width = (width + blockwidth - 1)/blockwidth;
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height = (height + blockheight - 1)/blockheight;
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src_x /= blockwidth;
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src_y /= blockheight;
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dst += dst_x * blocksize;
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src += src_x * blocksize;
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dst += dst_y * dst_stride;
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src += src_y * src_stride_pos;
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width *= blocksize;
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if (width == dst_stride && (int)width == src_stride)
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memcpy(dst, src, height * width);
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else {
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for (i = 0; i < height; i++) {
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memcpy(dst, src, width);
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dst += dst_stride;
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src += src_stride;
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}
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}
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}
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/**
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* Copy 3D box from one place to another.
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* Position and sizes are in pixels.
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*/
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void
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util_copy_box(ubyte * dst,
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enum pipe_format format,
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unsigned dst_stride, unsigned dst_slice_stride,
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unsigned dst_x, unsigned dst_y, unsigned dst_z,
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unsigned width, unsigned height, unsigned depth,
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const ubyte * src,
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int src_stride, unsigned src_slice_stride,
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unsigned src_x, unsigned src_y, unsigned src_z)
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{
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unsigned z;
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dst += dst_z * dst_slice_stride;
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src += src_z * src_slice_stride;
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for (z = 0; z < depth; ++z) {
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util_copy_rect(dst,
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format,
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dst_stride,
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dst_x, dst_y,
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width, height,
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src,
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src_stride,
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src_x, src_y);
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dst += dst_slice_stride;
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src += src_slice_stride;
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}
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}
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void
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util_fill_rect(ubyte * dst,
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enum pipe_format format,
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unsigned dst_stride,
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unsigned dst_x,
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unsigned dst_y,
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unsigned width,
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unsigned height,
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union util_color *uc)
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{
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const struct util_format_description *desc = util_format_description(format);
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unsigned i, j;
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unsigned width_size;
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int blocksize = desc->block.bits / 8;
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int blockwidth = desc->block.width;
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int blockheight = desc->block.height;
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assert(blocksize > 0);
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assert(blockwidth > 0);
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assert(blockheight > 0);
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dst_x /= blockwidth;
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dst_y /= blockheight;
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width = (width + blockwidth - 1)/blockwidth;
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height = (height + blockheight - 1)/blockheight;
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dst += dst_x * blocksize;
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dst += dst_y * dst_stride;
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width_size = width * blocksize;
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switch (blocksize) {
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case 1:
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if(dst_stride == width_size)
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memset(dst, uc->ub, height * width_size);
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else {
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for (i = 0; i < height; i++) {
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memset(dst, uc->ub, width_size);
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dst += dst_stride;
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}
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}
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break;
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case 2:
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for (i = 0; i < height; i++) {
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uint16_t *row = (uint16_t *)dst;
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for (j = 0; j < width; j++)
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*row++ = uc->us;
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dst += dst_stride;
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}
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break;
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case 4:
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for (i = 0; i < height; i++) {
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uint32_t *row = (uint32_t *)dst;
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for (j = 0; j < width; j++)
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*row++ = uc->ui[0];
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dst += dst_stride;
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}
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break;
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default:
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for (i = 0; i < height; i++) {
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ubyte *row = dst;
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for (j = 0; j < width; j++) {
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memcpy(row, uc, blocksize);
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row += blocksize;
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}
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dst += dst_stride;
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}
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break;
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}
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}
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void
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util_fill_box(ubyte * dst,
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enum pipe_format format,
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unsigned stride,
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unsigned layer_stride,
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unsigned x,
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unsigned y,
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unsigned z,
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unsigned width,
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unsigned height,
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unsigned depth,
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union util_color *uc)
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{
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unsigned layer;
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dst += z * layer_stride;
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for (layer = z; layer < depth; layer++) {
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util_fill_rect(dst, format,
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stride,
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x, y, width, height, uc);
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dst += layer_stride;
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}
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}
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/**
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* Fallback function for pipe->resource_copy_region().
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* Note: (X,Y)=(0,0) is always the upper-left corner.
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*/
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void
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util_resource_copy_region(struct pipe_context *pipe,
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struct pipe_resource *dst,
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unsigned dst_level,
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unsigned dst_x, unsigned dst_y, unsigned dst_z,
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struct pipe_resource *src,
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unsigned src_level,
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const struct pipe_box *src_box)
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{
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struct pipe_transfer *src_trans, *dst_trans;
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uint8_t *dst_map;
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const uint8_t *src_map;
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enum pipe_format src_format, dst_format;
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struct pipe_box dst_box;
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assert(src && dst);
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if (!src || !dst)
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return;
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assert((src->target == PIPE_BUFFER && dst->target == PIPE_BUFFER) ||
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(src->target != PIPE_BUFFER && dst->target != PIPE_BUFFER));
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src_format = src->format;
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dst_format = dst->format;
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assert(util_format_get_blocksize(dst_format) == util_format_get_blocksize(src_format));
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assert(util_format_get_blockwidth(dst_format) == util_format_get_blockwidth(src_format));
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assert(util_format_get_blockheight(dst_format) == util_format_get_blockheight(src_format));
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src_map = pipe->transfer_map(pipe,
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src,
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src_level,
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PIPE_TRANSFER_READ,
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src_box, &src_trans);
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assert(src_map);
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if (!src_map) {
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goto no_src_map;
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}
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dst_box.x = dst_x;
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dst_box.y = dst_y;
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dst_box.z = dst_z;
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dst_box.width = src_box->width;
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dst_box.height = src_box->height;
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dst_box.depth = src_box->depth;
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dst_map = pipe->transfer_map(pipe,
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dst,
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dst_level,
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PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
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&dst_box, &dst_trans);
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assert(dst_map);
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if (!dst_map) {
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goto no_dst_map;
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}
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if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
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assert(src_box->height == 1);
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assert(src_box->depth == 1);
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memcpy(dst_map, src_map, src_box->width);
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} else {
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util_copy_box(dst_map,
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dst_format,
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dst_trans->stride, dst_trans->layer_stride,
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0, 0, 0,
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src_box->width, src_box->height, src_box->depth,
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src_map,
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src_trans->stride, src_trans->layer_stride,
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0, 0, 0);
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}
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pipe->transfer_unmap(pipe, dst_trans);
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no_dst_map:
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pipe->transfer_unmap(pipe, src_trans);
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no_src_map:
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;
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}
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#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
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/* Return if the box is totally inside the resource.
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*/
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static boolean
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is_box_inside_resource(const struct pipe_resource *res,
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const struct pipe_box *box,
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unsigned level)
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{
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unsigned width = 1, height = 1, depth = 1;
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switch (res->target) {
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case PIPE_BUFFER:
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width = res->width0;
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height = 1;
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depth = 1;
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break;
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case PIPE_TEXTURE_1D:
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width = u_minify(res->width0, level);
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height = 1;
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depth = 1;
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break;
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case PIPE_TEXTURE_2D:
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case PIPE_TEXTURE_RECT:
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width = u_minify(res->width0, level);
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height = u_minify(res->height0, level);
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depth = 1;
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break;
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case PIPE_TEXTURE_3D:
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width = u_minify(res->width0, level);
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height = u_minify(res->height0, level);
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depth = u_minify(res->depth0, level);
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break;
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case PIPE_TEXTURE_CUBE:
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width = u_minify(res->width0, level);
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height = u_minify(res->height0, level);
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depth = 6;
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break;
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case PIPE_TEXTURE_1D_ARRAY:
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width = u_minify(res->width0, level);
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height = 1;
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depth = res->array_size;
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break;
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case PIPE_TEXTURE_2D_ARRAY:
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width = u_minify(res->width0, level);
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height = u_minify(res->height0, level);
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depth = res->array_size;
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break;
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case PIPE_TEXTURE_CUBE_ARRAY:
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width = u_minify(res->width0, level);
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height = u_minify(res->height0, level);
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depth = res->array_size;
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assert(res->array_size % 6 == 0);
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break;
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case PIPE_MAX_TEXTURE_TYPES:;
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}
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return box->x >= 0 &&
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box->x + box->width <= (int) width &&
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box->y >= 0 &&
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box->y + box->height <= (int) height &&
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box->z >= 0 &&
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box->z + box->depth <= (int) depth;
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}
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static unsigned
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get_sample_count(const struct pipe_resource *res)
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{
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return res->nr_samples ? res->nr_samples : 1;
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}
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/**
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* Try to do a blit using resource_copy_region. The function calls
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* resource_copy_region if the blit description is compatible with it.
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*
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* It returns TRUE if the blit was done using resource_copy_region.
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*
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* It returns FALSE otherwise and the caller must fall back to a more generic
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* codepath for the blit operation. (e.g. by using u_blitter)
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*/
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boolean
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util_try_blit_via_copy_region(struct pipe_context *ctx,
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const struct pipe_blit_info *blit)
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{
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unsigned mask = util_format_get_mask(blit->dst.format);
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/* No format conversions. */
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if (blit->src.resource->format != blit->src.format ||
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blit->dst.resource->format != blit->dst.format ||
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!util_is_format_compatible(
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util_format_description(blit->src.resource->format),
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util_format_description(blit->dst.resource->format))) {
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return FALSE;
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}
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/* No masks, no filtering, no scissor. */
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if ((blit->mask & mask) != mask ||
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blit->filter != PIPE_TEX_FILTER_NEAREST ||
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blit->scissor_enable) {
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return FALSE;
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}
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/* No flipping. */
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if (blit->src.box.width < 0 ||
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blit->src.box.height < 0 ||
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blit->src.box.depth < 0) {
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return FALSE;
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}
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/* No scaling. */
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if (blit->src.box.width != blit->dst.box.width ||
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blit->src.box.height != blit->dst.box.height ||
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blit->src.box.depth != blit->dst.box.depth) {
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return FALSE;
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}
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/* No out-of-bounds access. */
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if (!is_box_inside_resource(blit->src.resource, &blit->src.box,
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blit->src.level) ||
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!is_box_inside_resource(blit->dst.resource, &blit->dst.box,
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blit->dst.level)) {
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return FALSE;
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}
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/* Sample counts must match. */
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if (get_sample_count(blit->src.resource) !=
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get_sample_count(blit->dst.resource)) {
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return FALSE;
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}
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ctx->resource_copy_region(ctx, blit->dst.resource, blit->dst.level,
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blit->dst.box.x, blit->dst.box.y, blit->dst.box.z,
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blit->src.resource, blit->src.level,
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&blit->src.box);
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return TRUE;
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}
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