1 #include "../pico_int.h"
3 int (*PicoScan32xBegin)(unsigned int num);
4 int (*PicoScan32xEnd)(unsigned int num);
7 static void convert_pal555(int invert_prio)
9 unsigned int *ps = (void *)Pico32xMem->pal;
10 unsigned int *pd = (void *)Pico32xMem->pal_native;
11 unsigned int m1 = 0x001f001f;
12 unsigned int m2 = 0x03e003e0;
13 unsigned int m3 = 0xfc00fc00;
20 // place prio to LS green bit
21 for (i = 0x100/2; i > 0; i--, ps++, pd++) {
23 *pd = (((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10)) ^ inv;
26 Pico32x.dirty_pal = 0;
30 #define do_line_dc(pd, p32x, pmd, inv, pmd_draw_code) \
32 const unsigned int m1 = 0x001f; \
33 const unsigned int m2 = 0x03e0; \
34 const unsigned int m3 = 0x7c00; \
37 for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \
38 unsigned short t = *p32x; \
39 if (*pmd != mdbg && !((t ^ inv) & 0x8000)) { \
44 *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); \
49 #define do_line_pp(pd, p32x, pmd, pmd_draw_code) \
53 for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \
54 t = pal[*(unsigned char *)((long)p32x ^ 1)]; \
55 if ((t & 0x20) || *pmd == mdbg) \
63 #define do_line_rl(pd, p32x, pmd, pmd_draw_code) \
65 unsigned short len, t; \
67 for (i = 320; i > 0; p32x++) { \
68 t = pal[*p32x & 0xff]; \
69 for (len = (*p32x >> 8) + 1; len > 0 && i > 0; len--, i--, pd++, pmd++) { \
70 if (*pmd == mdbg || (t & 0x20)) \
78 void FinalizeLine32xRGB555(int sh, int line)
80 unsigned short *pd = DrawLineDest;
81 unsigned short *pal = Pico32xMem->pal_native;
82 unsigned char *pmd = HighCol + 8;
83 unsigned short *dram, *p32x;
86 FinalizeLine555(sh, line);
88 if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 0 || // 32x blanking
89 // XXX: how is 32col mode hadled by real hardware?
90 !(Pico.video.reg[12] & 1) || // 32col mode
91 !(PicoDrawMask & PDRAW_32X_ON))
96 dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
97 p32x = dram + dram[line];
98 mdbg = Pico.video.reg[7] & 0x3f;
100 if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode
101 int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0;
102 do_line_dc(pd, p32x, pmd, inv_bit,);
106 if (Pico32x.dirty_pal)
107 convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
109 if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode
110 unsigned char *p32xb = (void *)p32x;
111 if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT)
113 do_line_pp(pd, p32xb, pmd,);
115 else { // Run Length Mode
116 do_line_rl(pd, p32x, pmd,);
120 #define MD_LAYER_CODE \
123 #define PICOSCAN_PRE \
124 PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \
125 dst = DrawLineDest; \
127 #define PICOSCAN_POST \
128 PicoScan32xEnd(l + (lines_sft_offs & 0xff)); \
130 #define make_do_loop(name, pre_code, post_code, md_code) \
131 /* Direct Color Mode */ \
132 static void do_loop_dc##name(unsigned short *dst, \
133 unsigned short *dram, int lines_sft_offs, int mdbg) \
135 int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; \
136 unsigned char *pmd = PicoDraw2FB + \
137 328 * (lines_sft_offs & 0xff) + 8; \
138 unsigned short *palmd = HighPal; \
139 unsigned short *p32x; \
140 int lines = lines_sft_offs >> 16; \
143 for (l = 0; l < lines; l++, pmd += 8) { \
145 p32x = dram + dram[l]; \
146 do_line_dc(dst, p32x, pmd, inv_bit, md_code); \
151 /* Packed Pixel Mode */ \
152 static void do_loop_pp##name(unsigned short *dst, \
153 unsigned short *dram, int lines_sft_offs, int mdbg) \
155 unsigned short *pal = Pico32xMem->pal_native; \
156 unsigned char *pmd = PicoDraw2FB + \
157 328 * (lines_sft_offs & 0xff) + 8; \
158 unsigned short *palmd = HighPal; \
159 unsigned char *p32x; \
160 int lines = lines_sft_offs >> 16; \
163 for (l = 0; l < lines; l++, pmd += 8) { \
165 p32x = (void *)(dram + dram[l]); \
166 p32x += (lines_sft_offs >> 8) & 1; \
167 do_line_pp(dst, p32x, pmd, md_code); \
172 /* Run Length Mode */ \
173 static void do_loop_rl##name(unsigned short *dst, \
174 unsigned short *dram, int lines_sft_offs, int mdbg) \
176 unsigned short *pal = Pico32xMem->pal_native; \
177 unsigned char *pmd = PicoDraw2FB + \
178 328 * (lines_sft_offs & 0xff) + 8; \
179 unsigned short *palmd = HighPal; \
180 unsigned short *p32x; \
181 int lines = lines_sft_offs >> 16; \
184 for (l = 0; l < lines; l++, pmd += 8) { \
186 p32x = dram + dram[l]; \
187 do_line_rl(dst, p32x, pmd, md_code); \
194 #define make_do_loop(name, pre_code, post_code, md_code) \
195 extern void do_loop_dc##name(unsigned short *dst, \
196 unsigned short *dram, int lines_offs, int mdbg); \
197 extern void do_loop_pp##name(unsigned short *dst, \
198 unsigned short *dram, int lines_offs, int mdbg); \
199 extern void do_loop_rl##name(unsigned short *dst, \
200 unsigned short *dram, int lines_offs, int mdbg);
204 make_do_loop(_md, , , MD_LAYER_CODE)
205 make_do_loop(_scan, PICOSCAN_PRE, PICOSCAN_POST, )
206 make_do_loop(_scan_md, PICOSCAN_PRE, PICOSCAN_POST, MD_LAYER_CODE)
208 typedef void (*do_loop_func)(unsigned short *dst, unsigned short *dram, int lines, int mdbg);
209 enum { DO_LOOP, DO_LOOP_MD, DO_LOOP_SCAN, DO_LOOP_MD_SCAN };
211 static const do_loop_func do_loop_dc_f[] = { do_loop_dc, do_loop_dc_md, do_loop_dc_scan, do_loop_dc_scan_md };
212 static const do_loop_func do_loop_pp_f[] = { do_loop_pp, do_loop_pp_md, do_loop_pp_scan, do_loop_pp_scan_md };
213 static const do_loop_func do_loop_rl_f[] = { do_loop_rl, do_loop_rl_md, do_loop_rl_scan, do_loop_rl_scan_md };
215 void PicoDraw32xLayer(int offs, int lines, int md_bg)
217 int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL;
218 const do_loop_func *do_loop;
219 unsigned short *dram;
223 DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
224 dram = Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
226 if (Pico32xDrawMode == PDM32X_BOTH) {
228 PicoDrawUpdateHighPal();
231 if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2)
234 do_loop = do_loop_dc_f;
238 if (Pico32x.dirty_pal)
239 convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
241 if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1)
244 do_loop = do_loop_pp_f;
249 do_loop = do_loop_rl_f;
253 if (Pico32xDrawMode == PDM32X_BOTH)
254 which_func = have_scan ? DO_LOOP_MD_SCAN : DO_LOOP_MD;
256 which_func = have_scan ? DO_LOOP_SCAN : DO_LOOP;
257 lines_sft_offs = (lines << 16) | offs;
258 if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT)
259 lines_sft_offs |= 1 << 8;
261 do_loop[which_func](DrawLineDest, dram, lines_sft_offs, md_bg);
264 // mostly unused, games tend to keep 32X layer on
265 void PicoDraw32xLayerMdOnly(int offs, int lines)
267 int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL;
268 unsigned short *dst = (void *)((char *)DrawLineDestBase + offs * DrawLineDestIncrement);
269 unsigned char *pmd = PicoDraw2FB + 328 * offs + 8;
270 unsigned short *pal = HighPal;
271 int poffs = 0, plen = 320;
274 if (!(Pico.video.reg[12] & 1)) {
281 PicoDrawUpdateHighPal();
284 for (l = 0; l < lines; l++) {
286 PicoScan32xBegin(l + offs);
287 dst = DrawLineDest + poffs;
289 for (p = 0; p < plen; p += 4) {
290 dst[p + 0] = pal[*pmd++];
291 dst[p + 1] = pal[*pmd++];
292 dst[p + 2] = pal[*pmd++];
293 dst[p + 3] = pal[*pmd++];
295 dst = (void *)((char *)dst + DrawLineDestIncrement);
298 PicoScan32xEnd(l + offs);
302 void PicoDraw32xSetFrameMode(int is_on, int only_32x)
305 extern void *Pico32xNativePal;
306 Pico32xNativePal = Pico32xMem->pal_native;
310 // use the same layout as alt renderer
311 PicoDrawSetInternalBuf(PicoDraw2FB, 328);
312 Pico32xDrawMode = only_32x ? PDM32X_32X_ONLY : PDM32X_BOTH;
314 PicoDrawSetInternalBuf(NULL, 0);
315 Pico32xDrawMode = PDM32X_OFF;