static void _ChangeSize(void)
{
float res_scl_y;
uint32_t dwHStartReg, dwVStartReg;
uint32_t hstart, hend, vstart, vend, scale_y, scale_x;
float fscale_x = 0.0;
float fscale_y = 0.0;
float aspect = 0.0;
if (!gfx_info.VI_H_START_REG)
return;
res_scl_y = (float)settings.res_y / 240.0f;
dwHStartReg = *gfx_info.VI_H_START_REG;
dwVStartReg = *gfx_info.VI_V_START_REG;
hstart = dwHStartReg >> 16;
hend = dwHStartReg & 0xFFFF;
vstart = dwVStartReg >> 16;
vend = dwVStartReg & 0xFFFF;
scale_x = *gfx_info.VI_X_SCALE_REG & 0xFFF;
scale_y = *gfx_info.VI_Y_SCALE_REG & 0xFFF;
if (!scale_x || !scale_y)
return;
fscale_x = (float)scale_x / 1024.0f;
fscale_y = (float)scale_y / 2048.0f;
// dunno... but sometimes this happens
if (hend == hstart)
hend = (int)(*gfx_info.VI_WIDTH_REG / fscale_x);
rdp.vi_width = (hend - hstart) * fscale_x;
rdp.vi_height = (vend - vstart) * fscale_y * 1.0126582f;
aspect = (settings.adjust_aspect && (fscale_y > fscale_x) && (rdp.vi_width > rdp.vi_height)) ? fscale_x/fscale_y : 1.0f;
rdp.scale_x = (float)settings.res_x / rdp.vi_width;
if (region != OS_TV_TYPE_NTSC && settings.pal230)
{
// odd... but pal games seem to want 230 as height...
rdp.scale_y = res_scl_y * (230.0f / rdp.vi_height) * aspect;
}
else
{
rdp.scale_y = (float)settings.res_y / rdp.vi_height * aspect;
}
rdp.offset_y = ((float)settings.res_y - rdp.vi_height * rdp.scale_y) * 0.5f;
if (((uint32_t)rdp.vi_width <= (*gfx_info.VI_WIDTH_REG)/2) && (rdp.vi_width > rdp.vi_height))
rdp.scale_y *= 0.5f;
gDPSetScissor(
0, /* mode */
0, /* ulx */
0, /* uly */
(uint32_t)rdp.vi_width, /* lrx */
(uint32_t)rdp.vi_height /* lry */
);
g_gdp.flags |= UPDATE_VIEWPORT | UPDATE_SCISSOR;
}
void RDP_SetScissor( u32 w0, u32 w1 )
{
gDPSetScissor( _SHIFTR( w1, 24, 2 ), // mode
_FIXED2FLOAT( _SHIFTR( w0, 12, 12 ), 2 ), // ulx
_FIXED2FLOAT( _SHIFTR( w0, 0, 12 ), 2 ), // uly
_FIXED2FLOAT( _SHIFTR( w1, 12, 12 ), 2 ), // lrx
_FIXED2FLOAT( _SHIFTR( w1, 0, 12 ), 2 ) ); // lry
}
void gfx_mode_init(void)
{
gfx_sync();
gSPLoadGeometryMode(gfx_disp_p++, 0);
gDPSetCycleType(gfx_disp_p++, G_CYC_1CYCLE);
gDPSetRenderMode(gfx_disp_p++, G_RM_XLU_SURF, G_RM_XLU_SURF2);
gDPSetScissor(gfx_disp_p++, G_SC_NON_INTERLACE,
0, 0, Z64_SCREEN_WIDTH, Z64_SCREEN_HEIGHT);
gDPSetAlphaDither(gfx_disp_p++, G_AD_DISABLE);
gDPSetColorDither(gfx_disp_p++, G_CD_DISABLE);
gDPSetAlphaCompare(gfx_disp_p++, G_AC_NONE);
gDPSetDepthSource(gfx_disp_p++, G_ZS_PRIM);
gDPSetCombineKey(gfx_disp_p++, G_CK_NONE);
gDPSetTextureConvert(gfx_disp_p++, G_TC_FILT);
gDPSetTextureDetail(gfx_disp_p++, G_TD_CLAMP);
gDPSetTexturePersp(gfx_disp_p++, G_TP_NONE);
gDPSetTextureLOD(gfx_disp_p++, G_TL_TILE);
gDPSetTextureLUT(gfx_disp_p++, G_TT_NONE);
gDPPipelineMode(gfx_disp_p++, G_PM_NPRIMITIVE);
gfx_mode_apply(GFX_MODE_ALL);
}
