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/**
* Copyright (C) 2005-2012 Gekko Emulator
*
* @file utils.h
* @author ShizZy <shizzy247@gmail.com>
* @date 2012-12-28
* @brief Utility functions (in general, not related to emulation) useful for video core
*
* @section LICENSE
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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
* General Public License for more details at
* http://www.gnu.org/copyleft/gpl.html
*
* Official project repository can be found at:
* http://code.google.com/p/gekko-gc-emu/
*/
#pragma once
#include "common_types.h"
#include <string>
namespace FormatPrecision {
/// Adjust RGBA8 color with RGBA6 precision
static inline u32 rgba8_with_rgba6(u32 src) {
u32 color = src;
color &= 0xFCFCFCFC;
color |= (color >> 6) & 0x03030303;
return color;
}
/// Adjust RGBA8 color with RGB565 precision
static inline u32 rgba8_with_rgb565(u32 src) {
u32 color = (src & 0xF8FCF8);
color |= (color >> 5) & 0x070007;
color |= (color >> 6) & 0x000300;
color |= 0xFF000000;
return color;
}
/// Adjust Z24 depth value with Z16 precision
static inline u32 z24_with_z16(u32 src) {
return (src & 0xFFFF00) | (src >> 16);
}
} // namespace
namespace VideoCore {
/// Structure for the TGA texture format (for dumping)
struct TGAHeader {
char idlength;
char colourmaptype;
char datatypecode;
short int colourmaporigin;
short int colourmaplength;
short int x_origin;
short int y_origin;
short width;
short height;
char bitsperpixel;
char imagedescriptor;
};
/**
* Dumps a texture to TGA
* @param filename String filename to dump texture to
* @param width Width of texture in pixels
* @param height Height of texture in pixels
* @param raw_data Raw RGBA8 texture data to dump
* @todo This should be moved to some general purpose/common code
*/
void DumpTGA(std::string filename, int width, int height, u8* raw_data);
} // namespace
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