mirror of
https://github.com/0ldsk00l/smsplus.git
synced 2025-04-02 10:32:07 -04:00
237 lines
8.6 KiB
C
237 lines
8.6 KiB
C
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#include "osd.h"
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/* Index of blitter proc from table */
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int blitter_index;
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/* Points to currently used blitter proc */
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void (*blitter_proc)(BITMAP *src, BITMAP *dst) = NULL;
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/* Pick an appropriate blitter proc based on settings */
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void pick_blitter_proc(void)
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{
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/* Color depth */
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int f_d = (option.video_depth == 16) ? 1 : 0;
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/* 1= Don't use VGA vertical scaling (write odd lines manually) */
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int f_v = (option.no_vga) ? 1 : 0;
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/* 1= Use MMX */
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int f_m = ((cpu_capabilities & CPU_MMX) && (option.no_mmx == 0)) ? 1 : 0;
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/* 1= Do screen expansion */
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int f_e = (option.expand) ? 1 : 0;
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/* 1= Do screen scaling */
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int f_z = (option.scale) ? 1 : 0;
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/* 1= Use scanlines effect */
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int f_s = (option.scanlines) ? 1 : 0;
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/* 1= GG, 0= SMS */
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int f_g = (IS_GG) ? 1 : 0;
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/* Disable zooming if expansion is on */
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if(f_e && f_z) f_z = 0;
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/* Ignore VGA and MMX disable switches if not using expansion */
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if(!f_e) { f_v = f_m = 0; };
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/* If expansion and scanlines are on, ignore VGA disable */
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if(f_e && f_s) f_v = 0;
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/* Form index */
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blitter_index = (f_d << 6 | f_v << 5 | f_m << 4 | f_e << 3 | f_z << 2 | f_s << 1 | f_g) & 0x7F;
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/* Assign blitter proc */
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blitter_proc = blit_table[blitter_index];
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/* Assign custom blitters */
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if(option.tweak) blitter_proc = IS_GG ? blit_gg_twk : blit_sms_twk;
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}
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/* "C" blitter functions */
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void blit_sms(BITMAP *src, BITMAP *dst) {
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blit(src, dst, 0, 0, (SCREEN_W-bitmap.viewport.w)/2, (SCREEN_H-bitmap.viewport.h)/2, bitmap.viewport.w, bitmap.viewport.h);
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}
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void blit_sms_scanlines(BITMAP *src, BITMAP *dst) {
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int i;
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for(i=0;i<bitmap.viewport.h;i+=1)
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blit(src, dst, 0, i, (SCREEN_W-bitmap.viewport.w)/2, (((SCREEN_H/2)-bitmap.viewport.h))+(i << 1), bitmap.viewport.w, 1);
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}
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void blit_gg(BITMAP *src, BITMAP *dst) {
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blit(src, dst, bitmap.viewport.x, bitmap.viewport.y, (SCREEN_W-bitmap.viewport.w)/2, (SCREEN_H-bitmap.viewport.h)/2, bitmap.viewport.w, bitmap.viewport.h);
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}
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void blit_gg_scanlines(BITMAP *src, BITMAP *dst) {
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int i;
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for(i=0;i<bitmap.viewport.h;i+=1)
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blit(src, dst, bitmap.viewport.x, bitmap.viewport.y+i, (SCREEN_W-bitmap.viewport.w)/2, (((SCREEN_H/2)-bitmap.viewport.h))+(i << 1), bitmap.viewport.w, 1);
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}
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void blit_sms_scale(BITMAP *src, BITMAP *dst) {
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stretch_blit(src, dst, 0, 0, bitmap.viewport.w, bitmap.viewport.h, 0, 0, SCREEN_W, SCREEN_H);
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}
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void blit_sms_scale_scanlines(BITMAP *src, BITMAP *dst) {
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int i;
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for(i=0;i<bitmap.viewport.h;i+=1)
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stretch_blit(src, dst, 0, i, bitmap.viewport.w, 1, 0, (((SCREEN_H/2)-bitmap.viewport.h))+(i << 1), SCREEN_W, 1);
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}
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void blit_gg_scale(BITMAP *src, BITMAP *dst) {
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stretch_blit(src, dst, bitmap.viewport.x, bitmap.viewport.y, bitmap.viewport.w, bitmap.viewport.h, 0, 0, SCREEN_W, SCREEN_H);
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}
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void blit_gg_scale_scanlines(BITMAP *src, BITMAP *dst) {
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int i;
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for(i=0;i<bitmap.viewport.h;i+=1)
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stretch_blit(src, dst, bitmap.viewport.x, bitmap.viewport.y+i, bitmap.viewport.w, 1, 0, (((SCREEN_H/2)-bitmap.viewport.h))+(i << 1), SCREEN_W, 1);
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}
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void blit_sms_twk(BITMAP *src, BITMAP *dst) {
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blit(src, dst, 0, 0, 0, 0, bitmap.viewport.w, bitmap.viewport.h);
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}
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void blit_gg_twk(BITMAP *src, BITMAP *dst) {
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blit(src, dst, bitmap.viewport.x, bitmap.viewport.y, 0, 0, bitmap.viewport.w, bitmap.viewport.h);
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}
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/* List of blitter functions */
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void (*blit_table[])(BITMAP *src, BITMAP *dst) =
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{
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blit_sms ,
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blit_gg ,
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blit_sms_scanlines ,
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blit_gg_scanlines ,
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blit_sms_scale ,
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blit_gg_scale ,
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blit_sms_scale_scanlines ,
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blit_gg_scale_scanlines ,
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blit_sms_expand ,
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blit_gg_expand ,
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blit_sms_expand_scanlines ,
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blit_gg_expand_scanlines ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_mmx ,
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blit_gg_expand_mmx ,
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blit_sms_expand_scanlines_mmx ,
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blit_gg_expand_scanlines_mmx ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_vs ,
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blit_gg_expand_vs ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_mmx_vs ,
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blit_gg_expand_mmx_vs ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms ,
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blit_gg ,
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blit_sms_scanlines ,
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blit_gg_scanlines ,
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blit_sms_scale ,
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blit_gg_scale ,
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blit_sms_scale_scanlines ,
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blit_gg_scale_scanlines ,
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blit_sms_expand_16 ,
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blit_gg_expand_16 ,
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blit_sms_expand_scanlines_16 ,
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blit_gg_expand_scanlines_16 ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_mmx_16 ,
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blit_gg_expand_mmx_16 ,
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blit_sms_expand_scanlines_mmx_16 ,
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blit_gg_expand_scanlines_mmx_16 ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_vs_16 ,
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blit_gg_expand_vs_16 ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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blit_sms_expand_mmx_vs_16 ,
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blit_gg_expand_mmx_vs_16 ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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NULL ,
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};
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