214 lines
5.9 KiB
C
214 lines
5.9 KiB
C
// Project64 - A Nintendo 64 emulator
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// http://www.pj64-emu.com/
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// Copyright(C) 2001-2021 Project64
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// Copyright(C) 2003-2009 Sergey 'Gonetz' Lipski
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// Copyright(C) 2002 Dave2001
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// GNU/GPLv2 licensed: https://gnu.org/licenses/gpl-2.0.html
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#include <string.h>
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static inline void mirror32bS(uint8_t *tex, uint8_t *start, int width, int height, int mask, int line, int full, int count)
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{
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uint32_t *v8;
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int v9;
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int v10;
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v8 = (uint32_t *)start;
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v9 = height;
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do
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{
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v10 = 0;
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do
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{
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if (width & (v10 + width))
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{
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*v8 = *(uint32_t *)(&tex[mask] - (mask & 4 * v10));
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++v8;
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}
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else
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{
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*v8 = *(uint32_t *)&tex[mask & 4 * v10];
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++v8;
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}
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++v10;
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} while (v10 != count);
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v8 = (uint32_t *)((char *)v8 + line);
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tex += full;
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--v9;
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} while (v9);
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}
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static inline void wrap32bS(uint8_t *tex, uint8_t *start, int height, int mask, int line, int full, int count)
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{
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uint32_t *v7;
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int v8;
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int v9;
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v7 = (uint32_t *)start;
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v8 = height;
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do
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{
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v9 = 0;
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do
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{
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*v7 = *(uint32_t *)&tex[4 * (mask & v9)];
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++v7;
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++v9;
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} while (v9 != count);
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v7 = (uint32_t *)((char *)v7 + line);
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tex += full;
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--v8;
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} while (v8);
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}
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static inline void clamp32bS(uint8_t *tex, uint8_t *constant, int height, int line, int full, int count)
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{
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uint32_t *v6;
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uint32_t *v7;
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int v8;
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uint32_t v9;
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int v10;
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v6 = (uint32_t *)constant;
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v7 = (uint32_t *)tex;
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v8 = height;
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do
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{
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v9 = *v6;
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v10 = count;
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do
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{
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*v7 = v9;
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++v7;
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--v10;
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} while (v10);
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v6 = (uint32_t *)((char *)v6 + full);
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v7 = (uint32_t *)((char *)v7 + line);
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--v8;
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} while (v8);
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}
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//****************************************************************
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// 32-bit Horizontal Mirror
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void Mirror32bS(unsigned char * tex, uint32_t mask, uint32_t max_width, uint32_t real_width, uint32_t height)
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{
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if (mask == 0) return;
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uint32_t mask_width = (1 << mask);
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uint32_t mask_mask = (mask_width - 1) << 2;
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if (mask_width >= max_width) return;
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int count = max_width - mask_width;
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if (count <= 0) return;
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int line_full = real_width << 2;
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int line = line_full - (count << 2);
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if (line < 0) return;
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unsigned char * start = tex + (mask_width << 2);
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mirror32bS(tex, start, mask_width, height, mask_mask, line, line_full, count);
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}
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//****************************************************************
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// 32-bit Horizontal Wrap
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void Wrap32bS(unsigned char * tex, uint32_t mask, uint32_t max_width, uint32_t real_width, uint32_t height)
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{
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if (mask == 0) return;
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uint32_t mask_width = (1 << mask);
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uint32_t mask_mask = (mask_width - 1);
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if (mask_width >= max_width) return;
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int count = (max_width - mask_width);
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if (count <= 0) return;
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int line_full = real_width << 2;
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int line = line_full - (count << 2);
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if (line < 0) return;
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unsigned char * start = tex + (mask_width << 2);
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wrap32bS(tex, start, height, mask_mask, line, line_full, count);
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}
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//****************************************************************
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// 32-bit Horizontal Clamp
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void Clamp32bS(unsigned char * tex, uint32_t width, uint32_t clamp_to, uint32_t real_width, uint32_t real_height)
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{
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if (real_width <= width) return;
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unsigned char *dest = tex + (width << 2);
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unsigned char *constant = dest - 4;
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int count = clamp_to - width;
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int line_full = real_width << 2;
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int line = width << 2;
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clamp32bS(dest, constant, real_height, line, line_full, count);
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}
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//****************************************************************
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// 32-bit Vertical Mirror
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void Mirror32bT(unsigned char * tex, uint32_t mask, uint32_t max_height, uint32_t real_width)
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{
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if (mask == 0) return;
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uint32_t mask_height = (1 << mask);
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uint32_t mask_mask = mask_height - 1;
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if (max_height <= mask_height) return;
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int line_full = real_width << 2;
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unsigned char *dst = tex + mask_height * line_full;
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for (uint32_t y = mask_height; y < max_height; y++)
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{
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if (y & mask_height)
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{
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// mirrored
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memcpy((void*)dst, (void*)(tex + (mask_mask - (y & mask_mask)) * line_full), line_full);
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}
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else
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{
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// not mirrored
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memcpy((void*)dst, (void*)(tex + (y & mask_mask) * line_full), line_full);
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}
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dst += line_full;
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}
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}
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//****************************************************************
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// 32-bit Vertical Wrap
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void Wrap32bT(unsigned char * tex, uint32_t mask, uint32_t max_height, uint32_t real_width)
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{
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if (mask == 0) return;
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uint32_t mask_height = (1 << mask);
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uint32_t mask_mask = mask_height - 1;
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if (max_height <= mask_height) return;
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int line_full = real_width << 2;
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unsigned char *dst = tex + mask_height * line_full;
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for (uint32_t y = mask_height; y < max_height; y++)
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{
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// not mirrored
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memcpy((void*)dst, (void*)(tex + (y & mask_mask) * (line_full >> 2)), (line_full >> 2));
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dst += line_full;
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}
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}
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//****************************************************************
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// 32-bit Vertical Clamp
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void Clamp32bT(unsigned char * tex, uint32_t height, uint32_t real_width, uint32_t clamp_to)
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{
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int line_full = real_width << 2;
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unsigned char *dst = tex + height * line_full;
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unsigned char *const_line = dst - line_full;
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for (uint32_t y = height; y < clamp_to; y++)
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{
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memcpy((void*)dst, (void*)const_line, line_full);
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dst += line_full;
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}
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}
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