From 12eeb9524aa9421c03f253ab6161634bec66793b Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Sun, 27 Apr 2014 14:00:33 -0400 Subject: gl: Make drawing faster by using a better pixel format. --- libdimension/rgba.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 libdimension/rgba.c (limited to 'libdimension/rgba.c') diff --git a/libdimension/rgba.c b/libdimension/rgba.c new file mode 100644 index 0000000..6df124e --- /dev/null +++ b/libdimension/rgba.c @@ -0,0 +1,89 @@ +/************************************************************************* + * Copyright (C) 2010-2011 Tavian Barnes * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * . * + *************************************************************************/ + +/** + * @file + * 16-bit RGBA canvas optimizer. + */ + +#include "dimension-internal.h" +#include + +void +dmnsn_rgba8_optimize_canvas(dmnsn_canvas *canvas) +{ + if (dmnsn_canvas_find_optimizer(canvas, dmnsn_rgba8_optimizer_fn)) { + return; + } + + dmnsn_canvas_optimizer optimizer; + optimizer.optimizer_fn = dmnsn_rgba8_optimizer_fn; + optimizer.free_fn = dmnsn_free; + optimizer.ptr = dmnsn_malloc(4*canvas->width*canvas->height*sizeof(uint8_t)); + + dmnsn_canvas_optimize(canvas, &optimizer); +} + +void +dmnsn_rgba16_optimize_canvas(dmnsn_canvas *canvas) +{ + if (dmnsn_canvas_find_optimizer(canvas, dmnsn_rgba16_optimizer_fn)) { + return; + } + + dmnsn_canvas_optimizer optimizer; + optimizer.optimizer_fn = dmnsn_rgba16_optimizer_fn; + optimizer.free_fn = dmnsn_free; + optimizer.ptr = dmnsn_malloc(4*canvas->width*canvas->height*sizeof(uint16_t)); + + dmnsn_canvas_optimize(canvas, &optimizer); +} + +void +dmnsn_rgba8_optimizer_fn(const dmnsn_canvas *canvas, void *ptr, + size_t x, size_t y) +{ + uint8_t *pixel = (uint8_t *)ptr + 4*(y*canvas->width + x); + dmnsn_tcolor tcolor = dmnsn_canvas_get_pixel(canvas, x, y); + tcolor = dmnsn_tcolor_remove_filter(tcolor); + tcolor.c = dmnsn_color_to_sRGB(tcolor.c); + tcolor = dmnsn_tcolor_saturate(tcolor); + + pixel[0] = lround(tcolor.c.R*UINT8_MAX); + pixel[1] = lround(tcolor.c.G*UINT8_MAX); + pixel[2] = lround(tcolor.c.B*UINT8_MAX); + pixel[3] = lround(tcolor.T*UINT8_MAX); +} + +void +dmnsn_rgba16_optimizer_fn(const dmnsn_canvas *canvas, void *ptr, + size_t x, size_t y) +{ + uint16_t *pixel = (uint16_t *)ptr + 4*(y*canvas->width + x); + dmnsn_tcolor tcolor = dmnsn_canvas_get_pixel(canvas, x, y); + tcolor = dmnsn_tcolor_remove_filter(tcolor); + tcolor.c = dmnsn_color_to_sRGB(tcolor.c); + tcolor = dmnsn_tcolor_saturate(tcolor); + + pixel[0] = lround(tcolor.c.R*UINT16_MAX); + pixel[1] = lround(tcolor.c.G*UINT16_MAX); + pixel[2] = lround(tcolor.c.B*UINT16_MAX); + pixel[3] = lround(tcolor.T*UINT16_MAX); +} -- cgit v1.2.3