726 lines
21 KiB
C
726 lines
21 KiB
C
/**************************************************************************
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*
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* Copyright 2010 VMware, Inc.
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* 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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* Pixel format accessor functions.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#include "u_math.h"
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#include "u_memory.h"
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#include "u_rect.h"
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#include "u_format.h"
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#include "u_format_s3tc.h"
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#include "pipe/p_defines.h"
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boolean
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util_format_is_float(enum pipe_format format)
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{
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const struct util_format_description *desc = util_format_description(format);
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unsigned i;
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assert(desc);
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if (!desc) {
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return FALSE;
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}
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i = util_format_get_first_non_void_channel(format);
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if (i == -1) {
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return FALSE;
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}
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return desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT ? TRUE : FALSE;
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}
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/** Test if the format contains RGB, but not alpha */
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boolean
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util_format_has_alpha(enum pipe_format format)
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{
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const struct util_format_description *desc =
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util_format_description(format);
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return (desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
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desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
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desc->swizzle[3] != UTIL_FORMAT_SWIZZLE_1;
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}
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boolean
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util_format_is_luminance(enum pipe_format format)
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{
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const struct util_format_description *desc =
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util_format_description(format);
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if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
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desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
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desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[3] == UTIL_FORMAT_SWIZZLE_1) {
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return TRUE;
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}
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return FALSE;
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}
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boolean
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util_format_is_pure_integer(enum pipe_format format)
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{
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const struct util_format_description *desc = util_format_description(format);
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int i;
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/* Find the first non-void channel. */
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i = util_format_get_first_non_void_channel(format);
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if (i == -1)
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return FALSE;
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return desc->channel[i].pure_integer ? TRUE : FALSE;
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}
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boolean
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util_format_is_pure_sint(enum pipe_format format)
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{
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const struct util_format_description *desc = util_format_description(format);
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int i;
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i = util_format_get_first_non_void_channel(format);
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if (i == -1)
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return FALSE;
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return (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED && desc->channel[i].pure_integer) ? TRUE : FALSE;
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}
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boolean
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util_format_is_pure_uint(enum pipe_format format)
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{
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const struct util_format_description *desc = util_format_description(format);
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int i;
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i = util_format_get_first_non_void_channel(format);
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if (i == -1)
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return FALSE;
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return (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED && desc->channel[i].pure_integer) ? TRUE : FALSE;
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}
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/**
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* Returns true if all non-void channels are normalized signed.
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*/
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boolean
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util_format_is_snorm(enum pipe_format format)
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{
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const struct util_format_description *desc = util_format_description(format);
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int i;
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if (desc->is_mixed)
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return FALSE;
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i = util_format_get_first_non_void_channel(format);
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if (i == -1)
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return FALSE;
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return desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED &&
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!desc->channel[i].pure_integer &&
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desc->channel[i].normalized;
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}
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boolean
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util_format_is_luminance_alpha(enum pipe_format format)
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{
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const struct util_format_description *desc =
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util_format_description(format);
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if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
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desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
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desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[3] == UTIL_FORMAT_SWIZZLE_Y) {
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return TRUE;
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}
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return FALSE;
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}
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boolean
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util_format_is_intensity(enum pipe_format format)
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{
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const struct util_format_description *desc =
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util_format_description(format);
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if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
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desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
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desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_X &&
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desc->swizzle[3] == UTIL_FORMAT_SWIZZLE_X) {
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return TRUE;
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}
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return FALSE;
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}
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boolean
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util_format_is_supported(enum pipe_format format, unsigned bind)
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{
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if (util_format_is_s3tc(format) && !util_format_s3tc_enabled) {
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return FALSE;
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}
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#ifndef TEXTURE_FLOAT_ENABLED
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if ((bind & PIPE_BIND_RENDER_TARGET) &&
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format != PIPE_FORMAT_R9G9B9E5_FLOAT &&
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format != PIPE_FORMAT_R11G11B10_FLOAT &&
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util_format_is_float(format)) {
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return FALSE;
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}
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#endif
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return TRUE;
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}
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void
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util_format_read_4f(enum pipe_format format,
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float *dst, unsigned dst_stride,
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const void *src, unsigned src_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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const uint8_t *src_row;
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float *dst_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
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dst_row = dst;
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format_desc->unpack_rgba_float(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_write_4f(enum pipe_format format,
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const float *src, unsigned src_stride,
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void *dst, unsigned dst_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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uint8_t *dst_row;
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const float *src_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
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src_row = src;
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format_desc->pack_rgba_float(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_read_4ub(enum pipe_format format, uint8_t *dst, unsigned dst_stride, const void *src, unsigned src_stride, unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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const uint8_t *src_row;
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uint8_t *dst_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
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dst_row = dst;
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format_desc->unpack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_write_4ub(enum pipe_format format, const uint8_t *src, unsigned src_stride, void *dst, unsigned dst_stride, unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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uint8_t *dst_row;
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const uint8_t *src_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
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src_row = src;
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format_desc->pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_read_4ui(enum pipe_format format,
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unsigned *dst, unsigned dst_stride,
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const void *src, unsigned src_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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const uint8_t *src_row;
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unsigned *dst_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
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dst_row = dst;
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format_desc->unpack_rgba_uint(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_write_4ui(enum pipe_format format,
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const unsigned int *src, unsigned src_stride,
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void *dst, unsigned dst_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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uint8_t *dst_row;
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const unsigned *src_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
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src_row = src;
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format_desc->pack_rgba_uint(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_read_4i(enum pipe_format format,
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int *dst, unsigned dst_stride,
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const void *src, unsigned src_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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const uint8_t *src_row;
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int *dst_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8);
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dst_row = dst;
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format_desc->unpack_rgba_sint(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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void
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util_format_write_4i(enum pipe_format format,
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const int *src, unsigned src_stride,
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void *dst, unsigned dst_stride,
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unsigned x, unsigned y, unsigned w, unsigned h)
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{
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const struct util_format_description *format_desc;
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uint8_t *dst_row;
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const int *src_row;
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format_desc = util_format_description(format);
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assert(x % format_desc->block.width == 0);
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assert(y % format_desc->block.height == 0);
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dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8);
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src_row = src;
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format_desc->pack_rgba_sint(dst_row, dst_stride, src_row, src_stride, w, h);
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}
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boolean
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util_is_format_compatible(const struct util_format_description *src_desc,
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const struct util_format_description *dst_desc)
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{
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unsigned chan;
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if (src_desc->format == dst_desc->format) {
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return TRUE;
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}
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if (src_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN ||
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dst_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
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return FALSE;
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}
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if (src_desc->block.bits != dst_desc->block.bits ||
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src_desc->nr_channels != dst_desc->nr_channels ||
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src_desc->colorspace != dst_desc->colorspace) {
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return FALSE;
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}
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for (chan = 0; chan < 4; ++chan) {
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if (src_desc->channel[chan].size !=
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dst_desc->channel[chan].size) {
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return FALSE;
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}
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}
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for (chan = 0; chan < 4; ++chan) {
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enum util_format_swizzle swizzle = dst_desc->swizzle[chan];
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if (swizzle < 4) {
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if (src_desc->swizzle[chan] != swizzle) {
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return FALSE;
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}
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if ((src_desc->channel[swizzle].type !=
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dst_desc->channel[swizzle].type) ||
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(src_desc->channel[swizzle].normalized !=
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dst_desc->channel[swizzle].normalized)) {
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return FALSE;
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}
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}
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}
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return TRUE;
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}
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boolean
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util_format_fits_8unorm(const struct util_format_description *format_desc)
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{
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unsigned chan;
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/*
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* After linearized sRGB values require more than 8bits.
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*/
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if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
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return FALSE;
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}
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switch (format_desc->layout) {
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case UTIL_FORMAT_LAYOUT_S3TC:
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/*
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* These are straight forward.
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*/
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return TRUE;
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case UTIL_FORMAT_LAYOUT_RGTC:
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if (format_desc->format == PIPE_FORMAT_RGTC1_SNORM ||
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format_desc->format == PIPE_FORMAT_RGTC2_SNORM ||
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format_desc->format == PIPE_FORMAT_LATC1_SNORM ||
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format_desc->format == PIPE_FORMAT_LATC2_SNORM)
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return FALSE;
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return TRUE;
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case UTIL_FORMAT_LAYOUT_PLAIN:
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/*
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* For these we can find a generic rule.
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*/
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for (chan = 0; chan < format_desc->nr_channels; ++chan) {
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switch (format_desc->channel[chan].type) {
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case UTIL_FORMAT_TYPE_VOID:
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break;
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case UTIL_FORMAT_TYPE_UNSIGNED:
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if (!format_desc->channel[chan].normalized ||
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format_desc->channel[chan].size > 8) {
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return FALSE;
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}
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break;
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default:
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return FALSE;
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}
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}
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return TRUE;
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default:
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/*
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* Handle all others on a case by case basis.
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*/
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switch (format_desc->format) {
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case PIPE_FORMAT_R1_UNORM:
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case PIPE_FORMAT_UYVY:
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case PIPE_FORMAT_YUYV:
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case PIPE_FORMAT_R8G8_B8G8_UNORM:
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case PIPE_FORMAT_G8R8_G8B8_UNORM:
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return TRUE;
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default:
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return FALSE;
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}
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}
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}
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void
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util_format_translate(enum pipe_format dst_format,
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void *dst, unsigned dst_stride,
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unsigned dst_x, unsigned dst_y,
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enum pipe_format src_format,
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const void *src, unsigned src_stride,
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unsigned src_x, unsigned src_y,
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unsigned width, unsigned height)
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{
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const struct util_format_description *dst_format_desc;
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const struct util_format_description *src_format_desc;
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uint8_t *dst_row;
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const uint8_t *src_row;
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unsigned x_step, y_step;
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unsigned dst_step;
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unsigned src_step;
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dst_format_desc = util_format_description(dst_format);
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src_format_desc = util_format_description(src_format);
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if (util_is_format_compatible(src_format_desc, dst_format_desc)) {
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/*
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* Trivial case.
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*/
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util_copy_rect(dst, dst_format, dst_stride, dst_x, dst_y,
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width, height, src, (int)src_stride,
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src_x, src_y);
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return;
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}
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assert(dst_x % dst_format_desc->block.width == 0);
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assert(dst_y % dst_format_desc->block.height == 0);
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assert(src_x % src_format_desc->block.width == 0);
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assert(src_y % src_format_desc->block.height == 0);
|
|
|
|
dst_row = (uint8_t *)dst + dst_y*dst_stride + dst_x*(dst_format_desc->block.bits/8);
|
|
src_row = (const uint8_t *)src + src_y*src_stride + src_x*(src_format_desc->block.bits/8);
|
|
|
|
/*
|
|
* This works because all pixel formats have pixel blocks with power of two
|
|
* sizes.
|
|
*/
|
|
|
|
y_step = MAX2(dst_format_desc->block.height, src_format_desc->block.height);
|
|
x_step = MAX2(dst_format_desc->block.width, src_format_desc->block.width);
|
|
assert(y_step % dst_format_desc->block.height == 0);
|
|
assert(y_step % src_format_desc->block.height == 0);
|
|
|
|
dst_step = y_step / dst_format_desc->block.height * dst_stride;
|
|
src_step = y_step / src_format_desc->block.height * src_stride;
|
|
|
|
/*
|
|
* TODO: double formats will loose precision
|
|
* TODO: Add a special case for formats that are mere swizzles of each other
|
|
*/
|
|
|
|
if (src_format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
|
|
dst_format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
|
|
float *tmp_z = NULL;
|
|
uint8_t *tmp_s = NULL;
|
|
|
|
assert(x_step == 1);
|
|
assert(y_step == 1);
|
|
|
|
if (src_format_desc->unpack_z_float &&
|
|
dst_format_desc->pack_z_float) {
|
|
tmp_z = MALLOC(width * sizeof *tmp_z);
|
|
}
|
|
|
|
if (src_format_desc->unpack_s_8uint &&
|
|
dst_format_desc->pack_s_8uint) {
|
|
tmp_s = MALLOC(width * sizeof *tmp_s);
|
|
}
|
|
|
|
while (height--) {
|
|
if (tmp_z) {
|
|
src_format_desc->unpack_z_float(tmp_z, 0, src_row, src_stride, width, 1);
|
|
dst_format_desc->pack_z_float(dst_row, dst_stride, tmp_z, 0, width, 1);
|
|
}
|
|
|
|
if (tmp_s) {
|
|
src_format_desc->unpack_s_8uint(tmp_s, 0, src_row, src_stride, width, 1);
|
|
dst_format_desc->pack_s_8uint(dst_row, dst_stride, tmp_s, 0, width, 1);
|
|
}
|
|
|
|
dst_row += dst_step;
|
|
src_row += src_step;
|
|
}
|
|
|
|
FREE(tmp_s);
|
|
|
|
FREE(tmp_z);
|
|
|
|
return;
|
|
}
|
|
|
|
if (util_format_fits_8unorm(src_format_desc) ||
|
|
util_format_fits_8unorm(dst_format_desc)) {
|
|
unsigned tmp_stride;
|
|
uint8_t *tmp_row;
|
|
|
|
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
|
|
tmp_row = MALLOC(y_step * tmp_stride);
|
|
if (!tmp_row)
|
|
return;
|
|
|
|
while (height >= y_step) {
|
|
src_format_desc->unpack_rgba_8unorm(tmp_row, tmp_stride, src_row, src_stride, width, y_step);
|
|
dst_format_desc->pack_rgba_8unorm(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
|
|
|
|
dst_row += dst_step;
|
|
src_row += src_step;
|
|
height -= y_step;
|
|
}
|
|
|
|
if (height) {
|
|
src_format_desc->unpack_rgba_8unorm(tmp_row, tmp_stride, src_row, src_stride, width, height);
|
|
dst_format_desc->pack_rgba_8unorm(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
|
|
}
|
|
|
|
FREE(tmp_row);
|
|
}
|
|
else {
|
|
unsigned tmp_stride;
|
|
float *tmp_row;
|
|
|
|
tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
|
|
tmp_row = MALLOC(y_step * tmp_stride);
|
|
if (!tmp_row)
|
|
return;
|
|
|
|
while (height >= y_step) {
|
|
src_format_desc->unpack_rgba_float(tmp_row, tmp_stride, src_row, src_stride, width, y_step);
|
|
dst_format_desc->pack_rgba_float(dst_row, dst_stride, tmp_row, tmp_stride, width, y_step);
|
|
|
|
dst_row += dst_step;
|
|
src_row += src_step;
|
|
height -= y_step;
|
|
}
|
|
|
|
if (height) {
|
|
src_format_desc->unpack_rgba_float(tmp_row, tmp_stride, src_row, src_stride, width, height);
|
|
dst_format_desc->pack_rgba_float(dst_row, dst_stride, tmp_row, tmp_stride, width, height);
|
|
}
|
|
|
|
FREE(tmp_row);
|
|
}
|
|
}
|
|
|
|
void util_format_compose_swizzles(const unsigned char swz1[4],
|
|
const unsigned char swz2[4],
|
|
unsigned char dst[4])
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
dst[i] = swz2[i] <= UTIL_FORMAT_SWIZZLE_W ?
|
|
swz1[swz2[i]] : swz2[i];
|
|
}
|
|
}
|
|
|
|
void util_format_apply_color_swizzle(union pipe_color_union *dst,
|
|
const union pipe_color_union *src,
|
|
const unsigned char swz[4],
|
|
const boolean is_integer)
|
|
{
|
|
unsigned c;
|
|
|
|
if (is_integer) {
|
|
for (c = 0; c < 4; ++c) {
|
|
switch (swz[c]) {
|
|
case PIPE_SWIZZLE_RED: dst->ui[c] = src->ui[0]; break;
|
|
case PIPE_SWIZZLE_GREEN: dst->ui[c] = src->ui[1]; break;
|
|
case PIPE_SWIZZLE_BLUE: dst->ui[c] = src->ui[2]; break;
|
|
case PIPE_SWIZZLE_ALPHA: dst->ui[c] = src->ui[3]; break;
|
|
default:
|
|
dst->ui[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1 : 0;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
for (c = 0; c < 4; ++c) {
|
|
switch (swz[c]) {
|
|
case PIPE_SWIZZLE_RED: dst->f[c] = src->f[0]; break;
|
|
case PIPE_SWIZZLE_GREEN: dst->f[c] = src->f[1]; break;
|
|
case PIPE_SWIZZLE_BLUE: dst->f[c] = src->f[2]; break;
|
|
case PIPE_SWIZZLE_ALPHA: dst->f[c] = src->f[3]; break;
|
|
default:
|
|
dst->f[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1.0f : 0.0f;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void util_format_swizzle_4f(float *dst, const float *src,
|
|
const unsigned char swz[4])
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
if (swz[i] <= UTIL_FORMAT_SWIZZLE_W)
|
|
dst[i] = src[swz[i]];
|
|
else if (swz[i] == UTIL_FORMAT_SWIZZLE_0)
|
|
dst[i] = 0;
|
|
else if (swz[i] == UTIL_FORMAT_SWIZZLE_1)
|
|
dst[i] = 1;
|
|
}
|
|
}
|
|
|
|
void util_format_unswizzle_4f(float *dst, const float *src,
|
|
const unsigned char swz[4])
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
switch (swz[i]) {
|
|
case UTIL_FORMAT_SWIZZLE_X:
|
|
dst[0] = src[i];
|
|
break;
|
|
case UTIL_FORMAT_SWIZZLE_Y:
|
|
dst[1] = src[i];
|
|
break;
|
|
case UTIL_FORMAT_SWIZZLE_Z:
|
|
dst[2] = src[i];
|
|
break;
|
|
case UTIL_FORMAT_SWIZZLE_W:
|
|
dst[3] = src[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|