From 0402d388cb9803652c0f9a52ba7dcb6029fdd0b9 Mon Sep 17 00:00:00 2001 From: marha Date: Sat, 30 Apr 2011 15:25:48 +0000 Subject: Added extra needed files --- mesalib/src/gallium/auxiliary/util/u_format.c | 392 ++++++++++++++++++++++++++ 1 file changed, 392 insertions(+) create mode 100644 mesalib/src/gallium/auxiliary/util/u_format.c (limited to 'mesalib/src/gallium/auxiliary/util/u_format.c') diff --git a/mesalib/src/gallium/auxiliary/util/u_format.c b/mesalib/src/gallium/auxiliary/util/u_format.c new file mode 100644 index 000000000..91485b05c --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_format.c @@ -0,0 +1,392 @@ +/************************************************************************** + * + * Copyright 2010 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 + * Pixel format accessor functions. + * + * @author Jose Fonseca + */ + +#include "u_math.h" +#include "u_memory.h" +#include "u_rect.h" +#include "u_format.h" +#include "u_format_s3tc.h" + +#include "pipe/p_defines.h" + + +boolean +util_format_is_float(enum pipe_format format) +{ + const struct util_format_description *desc = util_format_description(format); + unsigned i; + + assert(desc); + if (!desc) { + return FALSE; + } + + /* Find the first non-void channel. */ + for (i = 0; i < 4; i++) { + if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) { + break; + } + } + + if (i == 4) { + return FALSE; + } + + return desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT ? TRUE : FALSE; +} + + +boolean +util_format_is_supported(enum pipe_format format, unsigned bind) +{ + if (util_format_is_s3tc(format) && !util_format_s3tc_enabled) { + return FALSE; + } + +#ifndef TEXTURE_FLOAT_ENABLED + if ((bind & PIPE_BIND_RENDER_TARGET) && + format != PIPE_FORMAT_R9G9B9E5_FLOAT && + format != PIPE_FORMAT_R11G11B10_FLOAT && + util_format_is_float(format)) { + return FALSE; + } +#endif + + return TRUE; +} + + +void +util_format_read_4f(enum pipe_format format, + float *dst, unsigned dst_stride, + const void *src, unsigned src_stride, + unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + const uint8_t *src_row; + float *dst_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8); + dst_row = dst; + + format_desc->unpack_rgba_float(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +util_format_write_4f(enum pipe_format format, + const float *src, unsigned src_stride, + void *dst, unsigned dst_stride, + unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + uint8_t *dst_row; + const float *src_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8); + src_row = src; + + format_desc->pack_rgba_float(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +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) +{ + const struct util_format_description *format_desc; + const uint8_t *src_row; + uint8_t *dst_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8); + dst_row = dst; + + format_desc->unpack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +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) +{ + const struct util_format_description *format_desc; + uint8_t *dst_row; + const uint8_t *src_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8); + src_row = src; + + format_desc->pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +boolean +util_is_format_compatible(const struct util_format_description *src_desc, + const struct util_format_description *dst_desc) +{ + unsigned chan; + + if (src_desc->format == dst_desc->format) { + return TRUE; + } + + if (src_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN || + dst_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) { + return FALSE; + } + + if (src_desc->block.bits != dst_desc->block.bits || + src_desc->nr_channels != dst_desc->nr_channels || + src_desc->colorspace != dst_desc->colorspace) { + return FALSE; + } + + for (chan = 0; chan < 4; ++chan) { + if (src_desc->channel[chan].size != + dst_desc->channel[chan].size) { + return FALSE; + } + } + + for (chan = 0; chan < 4; ++chan) { + enum util_format_swizzle swizzle = dst_desc->swizzle[chan]; + + if (swizzle < 4) { + if (src_desc->swizzle[chan] != swizzle) { + return FALSE; + } + if ((src_desc->channel[swizzle].type != + dst_desc->channel[swizzle].type) || + (src_desc->channel[swizzle].normalized != + dst_desc->channel[swizzle].normalized)) { + return FALSE; + } + } + } + + return TRUE; +} + + +boolean +util_format_fits_8unorm(const struct util_format_description *format_desc) +{ + unsigned chan; + + /* + * After linearized sRGB values require more than 8bits. + */ + + if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) { + return FALSE; + } + + switch (format_desc->layout) { + + case UTIL_FORMAT_LAYOUT_S3TC: + case UTIL_FORMAT_LAYOUT_RGTC: + /* + * These are straight forward. + */ + + return TRUE; + + case UTIL_FORMAT_LAYOUT_PLAIN: + /* + * For these we can find a generic rule. + */ + + for (chan = 0; chan < format_desc->nr_channels; ++chan) { + switch (format_desc->channel[chan].type) { + case UTIL_FORMAT_TYPE_VOID: + break; + case UTIL_FORMAT_TYPE_UNSIGNED: + if (!format_desc->channel[chan].normalized || + format_desc->channel[chan].size > 8) { + return FALSE; + } + break; + default: + return FALSE; + } + } + return TRUE; + + default: + /* + * Handle all others on a case by case basis. + */ + + switch (format_desc->format) { + case PIPE_FORMAT_R1_UNORM: + case PIPE_FORMAT_UYVY: + case PIPE_FORMAT_YUYV: + case PIPE_FORMAT_R8G8_B8G8_UNORM: + case PIPE_FORMAT_G8R8_G8B8_UNORM: + return TRUE; + + default: + return FALSE; + } + } +} + + +void +util_format_translate(enum pipe_format dst_format, + void *dst, unsigned dst_stride, + unsigned dst_x, unsigned dst_y, + enum pipe_format src_format, + const void *src, unsigned src_stride, + unsigned src_x, unsigned src_y, + unsigned width, unsigned height) +{ + const struct util_format_description *dst_format_desc; + const struct util_format_description *src_format_desc; + uint8_t *dst_row; + const uint8_t *src_row; + unsigned x_step, y_step; + unsigned dst_step; + unsigned src_step; + + dst_format_desc = util_format_description(dst_format); + src_format_desc = util_format_description(src_format); + + if (util_is_format_compatible(src_format_desc, dst_format_desc)) { + /* + * Trivial case. + */ + + util_copy_rect(dst, dst_format, dst_stride, dst_x, dst_y, + width, height, src, (int)src_stride, + src_x, src_y); + return; + } + + assert(dst_x % dst_format_desc->block.width == 0); + assert(dst_y % dst_format_desc->block.height == 0); + assert(src_x % src_format_desc->block.width == 0); + 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 (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); + } +} -- cgit v1.2.3