libgs.c File Reference

#include <errno.h>
#include <stdio.h>
#include <kernel.h>
#include <libgs.h>
#include "internal.h"

Include dependency graph for libgs.c:

Go to the source code of this file.

Functions
GsGParam_t *	GsGetGParam (void)
void	GsResetGraph (s16 mode, s16 interlace, s16 omode, s16 ffmode)
void	GsSetCRTCSettings (u64 settings, u8 alpha_value)

Variables
QWORD	GsPrimWorkArea []
static GsGParam_t	gp_15 ={GS_INTERLACED, GS_MODE_NTSC, GS_FFMD_FRAME, 3}

Function Documentation

GsGetGParam()

GsGParam_t* GsGetGParam

(

void

)

Definition at line 24 of file libgs.c.

{
        return &gp_15;
}

References gp_15.

Referenced by GsResetGraph(), and GsSetDefaultDisplayEnv().

GsResetGraph()

void GsResetGraph	(	s16	mode,
		s16	interlace,
		s16	omode,
		s16	ffmode
	)

Definition at line 29 of file libgs.c.

{
        GsGParam_t *pGParams;
 
        switch(mode){
                case GS_INIT_RESET:
                        GsDmaInit();    //It seems like the Sony developers reset the GIF DMA channel with their libdma library, but a lot of homebrew GS libraries will do this on their own.
 
                        pGParams=GsGetGParam();
                        GS_SET_CSR_reset(1);
                        pGParams->ffmode=ffmode;
                        pGParams->interlace=interlace;
                        pGParams->omode=omode;
                        pGParams->version=GS_GET_CSR_gs_rev_number>>16;
 
                        GsPutIMR(0xFF00);
 
                        SetGsCrt(interlace&1, omode&0xFF, ffmode&1);
                        GsSetCRTCSettings(CRTC_SETTINGS_DEFAULT1, 0x80);
                        break;
                case GS_INIT_DRAW_RESET:
                        GS_SET_CSR_flush(1);
                        break;
        /*      There is a mode 5 present in the Sony sceGsResetGraph, but is not documented. It seems to change the video mode without resetting anything. */
        }
}

References CRTC_SETTINGS_DEFAULT1, GsGParam_t::ffmode, GS_GET_CSR_gs_rev_number, GS_INIT_DRAW_RESET, GS_INIT_RESET, GS_SET_CSR_flush, GS_SET_CSR_reset, GsDmaInit(), GsGetGParam(), GsPutIMR(), GsSetCRTCSettings(), GsGParam_t::interlace, mode, GsGParam_t::omode, SetGsCrt(), and GsGParam_t::version.

GsSetCRTCSettings()

void GsSetCRTCSettings	(	u64	settings,
		u8	alpha_value
	)

Definition at line 56 of file libgs.c.

{
        *((vu64 *)(gs_p_pmode)) =  (settings|((u64)(0x001) << 2)|((u64)(alpha_value)    << 8));
}

References gs_p_pmode.

Referenced by GsResetGraph(), and SelectDisplayContext().

Variable Documentation

gp_15

GsGParam_t gp_15 ={GS_INTERLACED, GS_MODE_NTSC, GS_FFMD_FRAME, 3}

static

Definition at line 22 of file libgs.c.

Referenced by GsGetGParam().

GsPrimWorkArea

QWORD GsPrimWorkArea[]

extern

Definition at line 18 of file packets.c.