Implement waiting for retrace in VBE functions. Remove range checks in protected mode functions, consistent with UniVBE and other VBE implementations. Fixes hang and graphics glitches in Jack Orlando.
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4048
This commit is contained in:
ripsaw8080
parent
5c0b03c10c
commit
4aa821d0e6
5 changed files with 91 additions and 34 deletions
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@ -592,10 +592,10 @@ graphics_chars:
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break;
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case 0x07:
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switch (reg_bl) {
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case 0x80: /* Set Display Start during retrace ?? */
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case 0x80: /* Set Display Start during retrace */
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case 0x00: /* Set display Start */
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reg_al=0x4f;
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reg_ah=VESA_SetDisplayStart(reg_cx,reg_dx);
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reg_ah=VESA_SetDisplayStart(reg_cx,reg_dx,reg_bl==0x80);
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break;
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case 0x01:
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reg_al=0x4f;
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@ -611,9 +611,8 @@ graphics_chars:
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case 0x09:
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switch (reg_bl) {
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case 0x80: /* Set Palette during retrace */
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//TODO
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case 0x00: /* Set Palette */
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reg_ah=VESA_SetPalette(SegPhys(es)+reg_di,reg_dx,reg_cx);
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reg_ah=VESA_SetPalette(SegPhys(es)+reg_di,reg_dx,reg_cx,reg_bl==0x80);
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reg_al=0x4f;
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break;
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case 0x01: /* Get Palette */
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@ -633,27 +632,27 @@ graphics_chars:
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}
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switch (reg_bl) {
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case 0x00:
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reg_edi=RealOff(int10.rom.pmode_interface);
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SegSet16(es,RealSeg(int10.rom.pmode_interface));
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reg_di=RealOff(int10.rom.pmode_interface);
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reg_cx=int10.rom.pmode_interface_size;
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reg_ax=0x004f;
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break;
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case 0x01: /* Get code for "set window" */
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reg_edi=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_window;
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SegSet16(es,RealSeg(int10.rom.pmode_interface));
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reg_cx=0x10; //0x10 should be enough for the callbacks
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reg_di=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_window;
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reg_cx=int10.rom.pmode_interface_start-int10.rom.pmode_interface_window;
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reg_ax=0x004f;
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break;
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case 0x02: /* Get code for "set display start" */
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reg_edi=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_start;
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SegSet16(es,RealSeg(int10.rom.pmode_interface));
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reg_cx=0x10; //0x10 should be enough for the callbacks
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reg_di=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_start;
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reg_cx=int10.rom.pmode_interface_palette-int10.rom.pmode_interface_start;
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reg_ax=0x004f;
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break;
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case 0x03: /* Get code for "set palette" */
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reg_edi=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_palette;
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SegSet16(es,RealSeg(int10.rom.pmode_interface));
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reg_cx=0x10; //0x10 should be enough for the callbacks
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reg_di=RealOff(int10.rom.pmode_interface)+int10.rom.pmode_interface_palette;
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reg_cx=int10.rom.pmode_interface_size-int10.rom.pmode_interface_palette;
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reg_ax=0x004f;
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break;
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default:
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@ -133,6 +133,8 @@ typedef struct {
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RealPt video_dcc_table;
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RealPt oemstring;
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RealPt vesa_modes;
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RealPt wait_retrace;
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RealPt set_window;
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RealPt pmode_interface;
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Bit16u pmode_interface_size;
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Bit16u pmode_interface_start;
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@ -208,9 +210,9 @@ Bit8u VESA_GetSVGAMode(Bit16u & mode);
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Bit8u VESA_SetCPUWindow(Bit8u window,Bit8u address);
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Bit8u VESA_GetCPUWindow(Bit8u window,Bit16u & address);
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Bit8u VESA_ScanLineLength(Bit8u subcall, Bit16u val, Bit16u & bytes,Bit16u & pixels,Bit16u & lines);
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Bit8u VESA_SetDisplayStart(Bit16u x,Bit16u y);
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Bit8u VESA_SetDisplayStart(Bit16u x,Bit16u y,bool wait);
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Bit8u VESA_GetDisplayStart(Bit16u & x,Bit16u & y);
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Bit8u VESA_SetPalette(PhysPt data,Bitu index,Bitu count);
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Bit8u VESA_SetPalette(PhysPt data,Bitu index,Bitu count,bool wait);
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Bit8u VESA_GetPalette(PhysPt data,Bitu index,Bitu count);
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/* Sub Groups */
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@ -36,7 +36,7 @@
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#define VESA_UNIMPLEMENTED 0xFF
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static struct {
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Bitu setwindow;
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Bitu rmWindow;
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Bitu pmStart;
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Bitu pmWindow;
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Bitu pmPalette;
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@ -254,7 +254,7 @@ foundit:
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var_write(&minfo.XResolution,mblock->swidth);
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var_write(&minfo.YResolution,mblock->sheight);
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}
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var_write(&minfo.WinFuncPtr,CALLBACK_RealPointer(callback.setwindow));
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var_write(&minfo.WinFuncPtr,int10.rom.set_window);
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var_write(&minfo.NumberOfBanks,0x1);
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var_write(&minfo.Reserved_page,0x1);
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var_write(&minfo.XCharSize,mblock->cwidth);
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@ -297,11 +297,15 @@ Bit8u VESA_GetCPUWindow(Bit8u window,Bit16u & address) {
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}
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Bit8u VESA_SetPalette(PhysPt data,Bitu index,Bitu count) {
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Bit8u VESA_SetPalette(PhysPt data,Bitu index,Bitu count,bool wait) {
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//Structure is (vesa 3.0 doc): blue,green,red,alignment
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Bit8u r,g,b;
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if (index>255) return VESA_FAIL;
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if (index+count>256) return VESA_FAIL;
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// Wait for retrace if requested
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if (wait) CALLBACK_RunRealFar(RealSeg(int10.rom.wait_retrace),RealOff(int10.rom.wait_retrace));
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IO_Write(0x3c8,(Bit8u)index);
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while (count) {
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b = mem_readb(data++);
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@ -422,8 +426,7 @@ Bit8u VESA_ScanLineLength(Bit8u subcall,Bit16u val, Bit16u & bytes,Bit16u & pixe
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return VESA_SUCCESS;
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}
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Bit8u VESA_SetDisplayStart(Bit16u x,Bit16u y) {
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// TODO wait for retrace in case bl==0x80
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Bit8u VESA_SetDisplayStart(Bit16u x,Bit16u y,bool wait) {
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Bitu pixels_per_offset;
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Bitu panning_factor = 1;
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@ -467,6 +470,9 @@ Bit8u VESA_SetDisplayStart(Bit16u x,Bit16u y) {
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IO_Write(0x3c0,0x13 | 0x20); // panning register, screen on
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IO_Write(0x3c0,new_panning);
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// Wait for retrace if requested
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if (wait) CALLBACK_RunRealFar(RealSeg(int10.rom.wait_retrace),RealOff(int10.rom.wait_retrace));
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return VESA_SUCCESS;
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}
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@ -514,25 +520,30 @@ static Bitu VESA_SetWindow(void) {
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if (reg_bh) reg_ah=VESA_GetCPUWindow(reg_bl,reg_dx);
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else reg_ah=VESA_SetCPUWindow(reg_bl,(Bit8u)reg_dx);
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reg_al=0x4f;
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return 0;
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return CBRET_NONE;
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}
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static Bitu VESA_PMSetWindow(void) {
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VESA_SetCPUWindow(0,(Bit8u)reg_dx);
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return 0;
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IO_Write(0x3d4,0x6a);
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IO_Write(0x3d5,reg_dl);
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return CBRET_NONE;
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}
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static Bitu VESA_PMSetPalette(void) {
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VESA_SetPalette(SegPhys(es) + reg_edi, reg_dx, reg_cx );
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return 0;
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PhysPt data=SegPhys(es)+reg_edi;
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Bit32u count=reg_cx;
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IO_Write(0x3c8,reg_dl);
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do {
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IO_Write(0x3c9,mem_readb(data+2));
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IO_Write(0x3c9,mem_readb(data+1));
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IO_Write(0x3c9,mem_readb(data));
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data+=4;
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} while (--count);
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return CBRET_NONE;
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}
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static Bitu VESA_PMSetStart(void) {
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// This function is from VBE2 and directly sets the VGA
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// display start address.
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// TODO wait for retrace in case bl==0x80
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Bit32u start = (reg_dx << 16) | reg_cx;
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vga.config.display_start = start;
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return 0;
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return CBRET_NONE;
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}
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@ -569,10 +580,12 @@ void INT10_SetupVESA(void) {
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case SVGA_S3Trio:
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break;
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}
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callback.setwindow=CALLBACK_Allocate();
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callback.pmPalette=CALLBACK_Allocate();
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callback.pmStart=CALLBACK_Allocate();
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CALLBACK_Setup(callback.setwindow,VESA_SetWindow,CB_RETF, "VESA Real Set Window");
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/* Prepare the real mode interface */
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int10.rom.wait_retrace=RealMake(0xc000,int10.rom.used);
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int10.rom.used += (Bit16u)CALLBACK_Setup(0, NULL, CB_VESA_WAIT, PhysMake(0xc000,int10.rom.used), "");
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callback.rmWindow=CALLBACK_Allocate();
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int10.rom.set_window=RealMake(0xc000,int10.rom.used);
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int10.rom.used += (Bit16u)CALLBACK_Setup(callback.rmWindow, VESA_SetWindow, CB_RETF, PhysMake(0xc000,int10.rom.used), "VESA Real Set Window");
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/* Prepare the pmode interface */
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int10.rom.pmode_interface=RealMake(0xc000,int10.rom.used);
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int10.rom.used += 8; //Skip the byte later used for offsets
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@ -585,11 +598,12 @@ void INT10_SetupVESA(void) {
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int10.rom.pmode_interface_start = int10.rom.used - RealOff( int10.rom.pmode_interface );
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phys_writew( Real2Phys(int10.rom.pmode_interface) + 2, int10.rom.pmode_interface_start);
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callback.pmStart=CALLBACK_Allocate();
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int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmStart, VESA_PMSetStart, CB_RETN, PhysMake(0xc000,int10.rom.used), "VESA PM Set Start");
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int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmStart, VESA_PMSetStart, CB_VESA_PM, PhysMake(0xc000,int10.rom.used), "VESA PM Set Start");
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/* PM Set Palette call */
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int10.rom.pmode_interface_palette = int10.rom.used - RealOff( int10.rom.pmode_interface );
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phys_writew( Real2Phys(int10.rom.pmode_interface) + 4, int10.rom.pmode_interface_palette);
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callback.pmPalette=CALLBACK_Allocate();
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int10.rom.used += (Bit16u)CALLBACK_Setup(0, NULL, CB_VESA_PM, PhysMake(0xc000,int10.rom.used), "");
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int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmPalette, VESA_PMSetPalette, CB_RETN, PhysMake(0xc000,int10.rom.used), "VESA PM Set Palette");
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/* Finalize the size and clear the required ports pointer */
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phys_writew( Real2Phys(int10.rom.pmode_interface) + 6, 0);
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