/************************************************************************** * * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. * 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 TUNGSTEN GRAPHICS 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. * **************************************************************************/ /** * Rectangle-related helper functions. */ #include "pipe/p_defines.h" #include "pipe/p_format.h" #include "pipe/p_context.h" #include "pipe/p_screen.h" #include "util/u_format.h" #include "util/u_rect.h" /** * Copy 2D rect from one place to another. * Position and sizes are in pixels. * src_stride may be negative to do vertical flip of pixels from source. */ void util_copy_rect(ubyte * dst, enum pipe_format format, unsigned dst_stride, unsigned dst_x, unsigned dst_y, unsigned width, unsigned height, const ubyte * src, int src_stride, unsigned src_x, unsigned src_y) { unsigned i; int src_stride_pos = src_stride < 0 ? -src_stride : src_stride; int blocksize = util_format_get_blocksize(format); int blockwidth = util_format_get_blockwidth(format); int blockheight = util_format_get_blockheight(format); assert(blocksize > 0); assert(blockwidth > 0); assert(blockheight > 0); dst_x /= blockwidth; dst_y /= blockheight; width = (width + blockwidth - 1)/blockwidth; height = (height + blockheight - 1)/blockheight; src_x /= blockwidth; src_y /= blockheight; dst += dst_x * blocksize; src += src_x * blocksize; dst += dst_y * dst_stride; src += src_y * src_stride_pos; width *= blocksize; if (width == dst_stride && width == src_stride) memcpy(dst, src, height * width); else { for (i = 0; i < height; i++) { memcpy(dst, src, width); dst += dst_stride; src += src_stride; } } } void util_fill_rect(ubyte * dst, enum pipe_format format, unsigned dst_stride, unsigned dst_x, unsigned dst_y, unsigned width, unsigned height, uint32_t value) { unsigned i, j; unsigned width_size; int blocksize = util_format_get_blocksize(format); int blockwidth = util_format_get_blockwidth(format); int blockheight = util_format_get_blockheight(format); assert(blocksize > 0); assert(blockwidth > 0); assert(blockheight > 0); dst_x /= blockwidth; dst_y /= blockheight; width = (width + blockwidth - 1)/blockwidth; height = (height + blockheight - 1)/blockheight; dst += dst_x * blocksize; dst += dst_y * dst_stride; width_size = width * blocksize; switch (blocksize) { case 1: if(dst_stride == width_size) memset(dst, (ubyte) value, height * width_size); else { for (i = 0; i < height; i++) { memset(dst, (ubyte) value, width_size); dst += dst_stride; } } break; case 2: for (i = 0; i < height; i++) { uint16_t *row = (uint16_t *)dst; for (j = 0; j < width; j++) *row++ = (uint16_t) value; dst += dst_stride; } break; case 4: for (i = 0; i < height; i++) { uint32_t *row = (uint32_t *)dst; for (j = 0; j < width; j++) *row++ = value; dst += dst_stride; } break; default: assert(0); break; } } /** * Fallback function for pipe->surface_copy(). * Note: (X,Y)=(0,0) is always the upper-left corner. * if do_flip, flip the image vertically on its way from src rect to dst rect. * XXX should probably put this in new u_surface.c file... */ void util_surface_copy(struct pipe_context *pipe, boolean do_flip, struct pipe_surface *dst, unsigned dst_x, unsigned dst_y, struct pipe_surface *src, unsigned src_x, unsigned src_y, unsigned w, unsigned h) { struct pipe_screen *screen = pipe->screen; struct pipe_transfer *src_trans, *dst_trans; void *dst_map; const void *src_map; enum pipe_format src_format, dst_format; assert(src->texture && dst->texture); if (!src->texture || !dst->texture) return; src_format = src->texture->format; dst_format = dst->texture->format; src_trans = screen->get_tex_transfer(screen, src->texture, src->face, src->level, src->zslice, PIPE_TRANSFER_READ, src_x, src_y, w, h); dst_trans = screen->get_tex_transfer(screen, dst->texture, dst->face, dst->level, dst->zslice, 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->screen->transfer_map(screen, src_trans); dst_map = pipe->screen->transfer_map(screen, dst_trans); assert(src_map); assert(dst_map); if (src_map && dst_map) { /* If do_flip, invert src_y position and pass negative src stride */ util_copy_rect(dst_map, dst_format, dst_trans->stride, 0, 0, w, h, src_map, do_flip ? -(int) src_trans->stride : src_trans->stride, 0, do_flip ? h - 1 : 0); } pipe->screen->transfer_unmap(pipe->screen, src_trans); pipe->screen->transfer_unmap(pipe->screen, dst_trans); screen->tex_transfer_destroy(src_trans); screen->tex_transfer_destroy(dst_trans); } #define UBYTE_TO_USHORT(B) ((B) | ((B) << 8)) /** * Fallback for pipe->surface_fill() function. * XXX should probably put this in new u_surface.c file... */ void util_surface_fill(struct pipe_context *pipe, struct pipe_surface *dst, unsigned dstx, unsigned dsty, unsigned width, unsigned height, unsigned value) { struct pipe_screen *screen = pipe->screen; struct pipe_transfer *dst_trans; void *dst_map; assert(dst->texture); if (!dst->texture) return; dst_trans = screen->get_tex_transfer(screen, dst->texture, dst->face, dst->level, dst->zslice, PIPE_TRANSFER_WRITE, dstx, dsty, width, height); dst_map = pipe->screen->transfer_map(screen, dst_trans); assert(dst_map); if (dst_map) { assert(dst_trans->stride > 0); switch (util_format_get_blocksize(dst_trans->texture->format)) { case 1: case 2: case 4: util_fill_rect(dst_map, dst_trans->texture->format, dst_trans->stride, 0, 0, width, height, value); break; case 8: { /* expand the 4-byte clear value to an 8-byte value */ ushort *row = (ushort *) dst_map; ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff); ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff); ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff); ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff); unsigned i, j; val0 = (val0 << 8) | val0; val1 = (val1 << 8) | val1; val2 = (val2 << 8) | val2; val3 = (val3 << 8) | val3; for (i = 0; i < height; i++) { for (j = 0; j < width; j++) { row[j*4+0] = val0; row[j*4+1] = val1; row[j*4+2] = val2; row[j*4+3] = val3; } row += dst_trans->stride/2; } } break; default: assert(0); break; } } pipe->screen->transfer_unmap(pipe->screen, dst_trans); screen->tex_transfer_destroy(dst_trans); }