mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-12-26 19:21:49 +01:00
[Core/VDP]
.Minor optimizations to rendering code .Fixed DMA Copy with undocumented code value (Fatal Labyrinth end sequence)
This commit is contained in:
EkeEke
parent
f78f3e605a
commit
e78d5a7834
@ -2976,7 +2976,7 @@ static void vdp_dma_68k_io(unsigned int length)
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static void vdp_dma_copy(unsigned int length)
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{
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/* VRAM read/write operation only */
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if ((code & 0x1F) == 0x10)
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if ((code & 0x1E) == 0x10)
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{
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int name;
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uint8 data;
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@ -1521,11 +1521,11 @@ void render_bg_m5(int line, int width)
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#ifdef LSB_FIRST
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uint32 shift = (xscroll >> 16) & 0x0F;
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uint32 index = pf_col_mask + 1 - ((xscroll >> 20) & pf_col_mask);
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uint32 v_line = (line + ((yscroll >> 16) & 0x3FF)) & pf_row_mask;
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uint32 v_line = (line + (yscroll >> 16)) & pf_row_mask;
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#else
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uint32 shift = (xscroll & 0x0F);
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uint32 index = pf_col_mask + 1 - ((xscroll >> 4) & pf_col_mask);
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uint32 v_line = (line + (yscroll & 0x3FF)) & pf_row_mask;
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uint32 v_line = (line + yscroll) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -1578,11 +1578,11 @@ void render_bg_m5(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll & 0x0F);
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index = pf_col_mask + start + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + (yscroll & 0x3FF)) & pf_row_mask;
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v_line = (line + yscroll) & pf_row_mask;
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#else
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + start + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 16)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -1683,7 +1683,6 @@ void render_bg_m5_vs(int line, int width)
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if (reg[12] & 1)
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{
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yscroll = vs[19] & (vs[19] >> 16);
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yscroll &= 0x3FF;
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}
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if(shift)
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@ -1713,9 +1712,9 @@ void render_bg_m5_vs(int line, int width)
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{
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/* Plane B vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 16)) & pf_row_mask;
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#else
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v_line = (line + (vs[column] & 0x3FF)) & pf_row_mask;
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v_line = (line + vs[column]) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -1793,9 +1792,9 @@ void render_bg_m5_vs(int line, int width)
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{
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/* Plane A vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + (vs[column] & 0x3FF)) & pf_row_mask;
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v_line = (line + vs[column]) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 16)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -1858,11 +1857,11 @@ void render_bg_m5_im2(int line, int width)
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#ifdef LSB_FIRST
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uint32 shift = (xscroll >> 16) & 0x0F;
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uint32 index = pf_col_mask + 1 - ((xscroll >> 20) & pf_col_mask);
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uint32 v_line = (line + ((yscroll >> 17) & 0x3FF)) & pf_row_mask;
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uint32 v_line = (line + (yscroll >> 17)) & pf_row_mask;
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#else
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uint32 shift = (xscroll & 0x0F);
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uint32 index = pf_col_mask + 1 - ((xscroll >> 4) & pf_col_mask);
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uint32 v_line = (line + ((yscroll >> 1) & 0x3FF)) & pf_row_mask;
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uint32 v_line = (line + (yscroll >> 1)) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -1915,11 +1914,11 @@ void render_bg_m5_im2(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll & 0x0F);
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index = pf_col_mask + start + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + ((yscroll >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 1)) & pf_row_mask;
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#else
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + start + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 17)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -2021,7 +2020,6 @@ void render_bg_m5_im2_vs(int line, int width)
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if (reg[12] & 1)
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{
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yscroll = (vs[19] >> 1) & (vs[19] >> 17);
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yscroll &= 0x3FF;
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}
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if(shift)
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@ -2051,9 +2049,9 @@ void render_bg_m5_im2_vs(int line, int width)
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{
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/* Plane B vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 17)) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 1)) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -2131,9 +2129,9 @@ void render_bg_m5_im2_vs(int line, int width)
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{
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/* Plane A vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 1)) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 17)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -2178,6 +2176,7 @@ void render_bg_m5(int line, int width)
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int column, start, end;
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uint32 atex, atbuf, *src, *dst;
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uint32 shift, index, v_line, *nt;
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uint8 *lb;
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/* Scroll Planes common data */
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uint32 xscroll = *(uint32 *)&vram[hscb + ((line & hscroll_mask) << 2)];
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@ -2223,11 +2222,11 @@ void render_bg_m5(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll & 0x0F);
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index = pf_col_mask + start + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + (yscroll & 0x3FF)) & pf_row_mask;
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v_line = (line + yscroll) & pf_row_mask;
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#else
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + start + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 16)) & pf_row_mask;
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#endif
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/* Background line buffer */
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@ -2297,11 +2296,11 @@ void render_bg_m5(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 16)) & pf_row_mask;
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#else
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shift = (xscroll & 0x0F);
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index = pf_col_mask + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + (yscroll & 0x3FF)) & pf_row_mask;
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v_line = (line + yscroll) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -2311,7 +2310,7 @@ void render_bg_m5(int line, int width)
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v_line = (v_line & 7) << 3;
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/* Background line buffer */
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uint8 *lb = &linebuf[0][0x20];
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lb = &linebuf[0][0x20];
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if(shift)
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{
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@ -2334,6 +2333,7 @@ void render_bg_m5_vs(int line, int width)
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int column, start, end;
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uint32 atex, atbuf, *src, *dst;
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uint32 shift, index, v_line, *nt;
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uint8 *lb;
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/* Scroll Planes common data */
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uint32 xscroll = *(uint32 *)&vram[hscb + ((line & hscroll_mask) << 2)];
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@ -2372,7 +2372,6 @@ void render_bg_m5_vs(int line, int width)
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if (reg[12] & 1)
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{
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yscroll = vs[19] & (vs[19] >> 16);
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yscroll &= 0x3FF;
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}
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/* Number of columns to draw */
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@ -2428,9 +2427,9 @@ void render_bg_m5_vs(int line, int width)
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{
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/* Plane A vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + (vs[column] & 0x3FF)) & pf_row_mask;
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v_line = (line + vs[column]) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 16)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -2483,7 +2482,7 @@ void render_bg_m5_vs(int line, int width)
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#endif
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/* Background line buffer */
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uint8 *lb = &linebuf[0][0x20];
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lb = &linebuf[0][0x20];
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if(shift)
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{
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@ -2507,9 +2506,9 @@ void render_bg_m5_vs(int line, int width)
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{
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/* Plane B vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 16) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 16)) & pf_row_mask;
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#else
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v_line = (line + (vs[column] & 0x3FF)) & pf_row_mask;
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v_line = (line + vs[column]) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -2528,6 +2527,7 @@ void render_bg_m5_im2(int line, int width)
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int column, start, end;
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uint32 atex, atbuf, *src, *dst;
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uint32 shift, index, v_line, *nt;
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uint8 *lb;
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/* Scroll Planes common data */
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int odd = odd_frame;
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@ -2574,11 +2574,11 @@ void render_bg_m5_im2(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll & 0x0F);
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index = pf_col_mask + start + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + ((yscroll >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 1)) & pf_row_mask;
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#else
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + start + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 17)) & pf_row_mask;
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#endif
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/* Background line buffer */
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@ -2648,11 +2648,11 @@ void render_bg_m5_im2(int line, int width)
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#ifdef LSB_FIRST
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shift = (xscroll >> 16) & 0x0F;
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index = pf_col_mask + 1 - ((xscroll >> 20) & pf_col_mask);
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v_line = (line + ((yscroll >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 17)) & pf_row_mask;
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#else
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shift = (xscroll & 0x0F);
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index = pf_col_mask + 1 - ((xscroll >> 4) & pf_col_mask);
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v_line = (line + ((yscroll >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (yscroll >> 1)) & pf_row_mask;
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#endif
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/* Plane B name table */
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@ -2662,7 +2662,7 @@ void render_bg_m5_im2(int line, int width)
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v_line = (((v_line & 7) << 1) | odd) << 3;
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/* Background line buffer */
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uint8 *lb = &linebuf[0][0x20];
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lb = &linebuf[0][0x20];
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if(shift)
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{
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@ -2685,6 +2685,7 @@ void render_bg_m5_im2_vs(int line, int width)
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int column, start, end;
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uint32 atex, atbuf, *src, *dst;
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uint32 shift, index, v_line, *nt;
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uint8 *lb;
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/* common data */
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int odd = odd_frame;
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@ -2725,7 +2726,6 @@ void render_bg_m5_im2_vs(int line, int width)
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{
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/* only in 40-cell mode, verified on MD2 */
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yscroll = (vs[19] >> 1) & (vs[19] >> 17);
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yscroll &= 0x3FF;
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}
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/* Number of columns to draw */
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@ -2781,9 +2781,9 @@ void render_bg_m5_im2_vs(int line, int width)
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{
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/* Plane A vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 1)) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 17)) & pf_row_mask;
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#endif
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/* Plane A name table */
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@ -2836,7 +2836,7 @@ void render_bg_m5_im2_vs(int line, int width)
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#endif
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/* Background line buffer */
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uint8 *lb = &linebuf[0][0x20];
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lb = &linebuf[0][0x20];
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if(shift)
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{
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@ -2860,9 +2860,9 @@ void render_bg_m5_im2_vs(int line, int width)
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{
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/* Plane B vertical scroll */
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#ifdef LSB_FIRST
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v_line = (line + ((vs[column] >> 17) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 17)) & pf_row_mask;
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#else
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v_line = (line + ((vs[column] >> 1) & 0x3FF)) & pf_row_mask;
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v_line = (line + (vs[column] >> 1)) & pf_row_mask;
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#endif
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/* Plane B name table */
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