// Originally by David Raingeard (cal2)
// GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
// Cleanups and endian wrongness amelioration by James L. Hammons
+// (C) 2010 Underground Software
+//
+// JLH = James L. Hammons <jlhamm@acm.org>
+//
+// Who When What
+// --- ---------- -------------------------------------------------------------
+// JLH 01/16/2010 Created this log ;-)
+// JLH 01/20/2011 Change rendering to RGBA, removed unnecessary code
+//
// Note: Endian wrongness probably stems from the MAME origins of this emu and
-// the braindead way in which MAME handles memory. :-)
+// the braindead way in which MAME used to handle memory. :-}
//
// Note: TOM has only a 16K memory space
//
#include "jaguar.h"
#include "log.h"
#include "m68k.h"
+//#include "memory.h"
#include "objectp.h"
#include "settings.h"
#include "video.h"
uint32 tomTimerPrescaler;
uint32 tomTimerDivider;
int32 tomTimerCounter;
-//uint32 tom_scanline;
-//uint32 hblankWidthInPixels = 0;
uint16 tom_jerry_int_pending, tom_timer_int_pending, tom_object_int_pending,
tom_gpu_int_pending, tom_video_int_pending;
-//uint16 * tom_cry_rgb_mix_lut;
-//int16 * TOMBackbuffer;
uint32 * TOMBackbuffer;
static const char * videoMode_to_str[8] =
void tom_render_16bpp_rgb_scanline(uint32 * backbuffer);
void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer);
-void tom_render_16bpp_cry_stretch_scanline(uint32 * backbuffer);
-void tom_render_24bpp_stretch_scanline(uint32 * backbuffer);
-void tom_render_16bpp_direct_stretch_scanline(uint32 * backbuffer);
-void tom_render_16bpp_rgb_stretch_scanline(uint32 * backbuffer);
-void tom_render_16bpp_cry_rgb_mix_stretch_scanline(uint32 * backbuffer);
-
-render_xxx_scanline_fn * scanline_render_normal[] =
+//render_xxx_scanline_fn * scanline_render_normal[] =
+render_xxx_scanline_fn * scanline_render[] =
{
tom_render_16bpp_cry_scanline,
tom_render_24bpp_scanline,
tom_render_16bpp_rgb_scanline
};
-render_xxx_scanline_fn * scanline_render_stretch[] =
-{
- tom_render_16bpp_cry_stretch_scanline,
- tom_render_24bpp_stretch_scanline,
- tom_render_16bpp_direct_stretch_scanline,
- tom_render_16bpp_rgb_stretch_scanline,
- tom_render_16bpp_cry_rgb_mix_stretch_scanline,
- tom_render_24bpp_stretch_scanline,
- tom_render_16bpp_direct_stretch_scanline,
- tom_render_16bpp_rgb_stretch_scanline,
-};
-
-render_xxx_scanline_fn * scanline_render[8];
-
-
// Screen info for various games [PAL]...
/*
BIOS
uint32 CRY16ToRGB32[0x10000];
uint32 MIX16ToRGB32[0x10000];
+#warning "This is not endian-safe. !!! FIX !!!"
void TOMFillLookupTables(void)
{
+ // NOTE: Jaguar 16-bit (non-CRY) color is RBG 556 like so:
+ // RRRR RBBB BBGG GGGG
for(uint32 i=0; i<0x10000; i++)
- RGB16ToRGB32[i] = 0xFF000000
- | ((i & 0xF100) >> 8) | ((i & 0xE000) >> 13)
- | ((i & 0x07C0) << 13) | ((i & 0x0700) << 8)
- | ((i & 0x003F) << 10) | ((i & 0x0030) << 4);
-
+//hm. RGB16ToRGB32[i] = 0xFF000000
+// | ((i & 0xF100) >> 8) | ((i & 0xE000) >> 13)
+// | ((i & 0x07C0) << 13) | ((i & 0x0700) << 8)
+// | ((i & 0x003F) << 10) | ((i & 0x0030) << 4);
+ RGB16ToRGB32[i] = 0x000000FF
+ | ((i & 0xF100) << 16) // Red
+ | ((i & 0x003F) << 18) // Green
+ | ((i & 0x07C0) << 5); // Blue
for(uint32 i=0; i<0x10000; i++)
{
- uint32 chrm = (i & 0xF000) >> 12,
- chrl = (i & 0x0F00) >> 8,
- y = (i & 0x00FF);
+ uint32 cyan = (i & 0xF000) >> 12,
+ red = (i & 0x0F00) >> 8,
+ intensity = (i & 0x00FF);
- uint32 r = (((uint32)redcv[chrm][chrl]) * y) >> 8,
- g = (((uint32)greencv[chrm][chrl]) * y) >> 8,
- b = (((uint32)bluecv[chrm][chrl]) * y) >> 8;
+ uint32 r = (((uint32)redcv[cyan][red]) * intensity) >> 8,
+ g = (((uint32)greencv[cyan][red]) * intensity) >> 8,
+ b = (((uint32)bluecv[cyan][red]) * intensity) >> 8;
- CRY16ToRGB32[i] = 0xFF000000 | (b << 16) | (g << 8) | r;
- MIX16ToRGB32[i] = CRY16ToRGB32[i];
+//hm. CRY16ToRGB32[i] = 0xFF000000 | (b << 16) | (g << 8) | r;
+ CRY16ToRGB32[i] = 0x000000FF | (r << 24) | (g << 16) | (b << 8);
+ MIX16ToRGB32[i] = (i & 0x01 ? RGB16ToRGB32[i] : CRY16ToRGB32[i]);
}
-
- for(uint32 i=0; i<0x10000; i++)
- if (i & 0x01)
- MIX16ToRGB32[i] = RGB16ToRGB32[i];
}
void TOMSetPendingJERRYInt(void)
}
//Used in only one place (and for debug purposes): OBJECTP.CPP
+#warning "Used in only one place (and for debug purposes): OBJECTP.CPP !!! FIX !!!"
uint16 TOMGetVDB(void)
{
-// This in NOT VDB!!!
-// return GET16(tomRam8, VBE);
return GET16(tomRam8, VDB);
}
uint32 r = *current_line_buffer++;
current_line_buffer++;
uint32 b = *current_line_buffer++;
- *backbuffer++ = 0xFF000000 | (b << 16) | (g << 8) | r;
+//hm. *backbuffer++ = 0xFF000000 | (b << 16) | (g << 8) | r;
+ *backbuffer++ = 0x000000FF | (r << 24) | (g << 16) | (r << 8);
width--;
}
}
}
}
-/////////////////////////////////////////////////////////////////////
-// This stuff may just go away by itself, especially if we do some //
-// good old OpenGL goodness... //
-/////////////////////////////////////////////////////////////////////
-
-void tom_render_16bpp_cry_rgb_mix_stretch_scanline(uint32 *backbuffer)
-{
- uint16 width=tomWidth;
- uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
-
- while (width)
- {
- uint16 color = *current_line_buffer++;
- color <<= 8;
- color |= *current_line_buffer++;
- *backbuffer++ = MIX16ToRGB32[color];
- current_line_buffer += 2;
- width--;
- }
-}
-
-void tom_render_16bpp_cry_stretch_scanline(uint32 *backbuffer)
-{
- uint32 chrm, chrl, y;
-
- uint16 width=tomWidth;
- uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
-
- while (width)
- {
- uint16 color;
- color=*current_line_buffer++;
- color<<=8;
- color|=*current_line_buffer++;
-
- chrm = (color & 0xF000) >> 12;
- chrl = (color & 0x0F00) >> 8;
- y = (color & 0x00FF);
-
- uint16 red = ((((uint32)redcv[chrm][chrl])*y)>>11);
- uint16 green = ((((uint32)greencv[chrm][chrl])*y)>>11);
- uint16 blue = ((((uint32)bluecv[chrm][chrl])*y)>>11);
-
- uint16 color2;
- color2=*current_line_buffer++;
- color2<<=8;
- color2|=*current_line_buffer++;
-
- chrm = (color2 & 0xF000) >> 12;
- chrl = (color2 & 0x0F00) >> 8;
- y = (color2 & 0x00FF);
-
- uint16 red2 = ((((uint32)redcv[chrm][chrl])*y)>>11);
- uint16 green2 = ((((uint32)greencv[chrm][chrl])*y)>>11);
- uint16 blue2 = ((((uint32)bluecv[chrm][chrl])*y)>>11);
-
- red=(red+red2)>>1;
- green=(green+green2)>>1;
- blue=(blue+blue2)>>1;
-
- *backbuffer++=(red<<10)|(green<<5)|blue;
- width--;
- }
-}
-
-void tom_render_24bpp_stretch_scanline(uint32 *backbuffer)
-{
- uint16 width=tomWidth;
- uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
-
- while (width)
- {
- uint16 green=*current_line_buffer++;
- uint16 red=*current_line_buffer++;
- /*uint16 nc=*/current_line_buffer++;
- uint16 blue=*current_line_buffer++;
- red>>=3;
- green>>=3;
- blue>>=3;
- *backbuffer++=(red<<10)|(green<<5)|blue;
- current_line_buffer+=4;
- width--;
- }
-}
-
-void tom_render_16bpp_direct_stretch_scanline(uint32 *backbuffer)
-{
- uint16 width=tomWidth;
- uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
-
- while (width)
- {
- uint16 color=*current_line_buffer++;
- color<<=8;
- color|=*current_line_buffer++;
- color>>=1;
- *backbuffer++=color;
- current_line_buffer+=2;
- width--;
- }
-}
-
-void tom_render_16bpp_rgb_stretch_scanline(uint32 *backbuffer)
-{
- uint16 width=tomWidth;
- uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
-
- while (width)
- {
- uint16 color1=*current_line_buffer++;
- color1<<=8;
- color1|=*current_line_buffer++;
- color1>>=1;
- uint16 color2=*current_line_buffer++;
- color2<<=8;
- color2|=*current_line_buffer++;
- color2>>=1;
- uint16 red=(((color1&0x7c00)>>10)+((color2&0x7c00)>>10))>>1;
- uint16 green=(((color1&0x00003e0)>>5)+((color2&0x00003e0)>>5))>>1;
- uint16 blue=(((color1&0x0000001f))+((color2&0x0000001f)))>>1;
-
- color1=(red<<10)|(blue<<5)|green;
- *backbuffer++=color1;
- width--;
- }
-}
void TOMResetBackbuffer(uint32 * backbuffer)
{
//
// Process a single scanline
//
+uint32 tomDeviceWidth;//kludge
void TOMExecScanline(uint16 scanline, bool render)
{
bool inActiveDisplayArea = true;
// If outside of VDB & VDE, then display the border color
uint32 * currentLineBuffer = TOMBackbuffer;
uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1];
- uint32 pixel = 0xFF000000 | (b << 16) | (g << 8) | r;
+//Hm. uint32 pixel = 0xFF000000 | (b << 16) | (g << 8) | r;
+ uint32 pixel = 0x000000FF | (r << 24) | (g << 16) | (b << 8);
for(uint32 i=0; i<tomWidth; i++)
*currentLineBuffer++ = pixel;
}
- TOMBackbuffer += GetSDLScreenWidthInPixels();
+#warning "!!! Need to move this to an interface file !!! FIX !!!"
+// TOMBackbuffer += GetSDLScreenWidthInPixels();
+ TOMBackbuffer += tomDeviceWidth;
}
}
//
void TOMInit(void)
{
+ TOMFillLookupTables();
OPInit();
BlitterInit();
TOMReset();
- // Setup the non-stretchy scanline rendering...
- memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render));
- TOMFillLookupTables();
}
void TOMDone(void)
// memory_free(tom_cry_rgb_mix_lut);
}
-/*uint32 tom_getHBlankWidthInPixels(void)
-{
- return hblankWidthInPixels;
-}*/
-
uint32 TOMGetVideoModeWidth(void)
{
//These widths are pretty bogus. Should use HDB1/2 & HDE/HBB & PWIDTH to calc the width...
tomTimerPrescaler = 0; // TOM PIT is disabled
tomTimerDivider = 0;
tomTimerCounter = 0;
- memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render));
}
//
{
tomWidth = width, tomHeight = height;
- if (vjs.renderType == RT_NORMAL)
- ResizeScreen(tomWidth, tomHeight);
+#warning "!!! TOM: ResizeScreen commented out !!!"
+// No need to resize anything, since we're prepared for this...
+// if (vjs.renderType == RT_NORMAL)
+// ResizeScreen(tomWidth, tomHeight);
}
}
}
return tomRam8[INT1 + 1/*0xE1*/] & (1 << irq);
}
-//unused
-/*void tom_set_irq_latch(int irq, int enabled)
-{
- tomRam8[0xE0] = (tomRam8[0xE0] & (~(1<<irq))) | (enabled ? (1<<irq) : 0);
-}*/
-
-//unused
-/*uint16 tom_irq_control_reg(void)
-{
- return (tomRam8[0xE0] << 8) | tomRam8[0xE1];
-}*/
-
// NEW:
// TOM Programmable Interrupt Timer handler
// NOTE: TOM's PIT is only enabled if the prescaler is != 0
}
}
-
void TOMPITCallback(void)
{
-// INT1_RREG |= 0x08; // Set TOM PIT interrupt pending
+// INT1_RREG |= 0x08; // Set TOM PIT interrupt pending
TOMSetPendingTimerInt();
- GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // It does the 'IRQ enabled' checking
+ GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // It does the 'IRQ enabled' checking
// if (INT1_WREG & 0x08)
if (TOMIRQEnabled(IRQ_TIMER))
- m68k_set_irq(7); // Generate 68K NMI
+ m68k_set_irq(7); // Generate 68K NMI
TOMResetPIT();
}
projects / virtualjaguar / blobdiff