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snes9xgx/source/video.cpp
emu_kidid a417745817 - Fix compilation errors with latest libOGC/devkitPPC 
- Fix GameCube build
- Add PowerPC specific Blargg makefile flags
- Add LTO to Makefile.gc
2018-06-06 23:40:11 +09:30

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/****************************************************************************
* Snes9x Nintendo Wii/Gamecube Port
*
* softdev July 2006
* crunchy2 May 2007
* Michniewski 2008
* Tantric 2008-2010
*
* video.cpp
*
* Video routines
***************************************************************************/
#include <gccore.h>
#include <ogcsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ogc/texconv.h>
#include "snes9xgx.h"
#include "menu.h"
#include "filter.h"
#include "filelist.h"
#include "audio.h"
#include "gui/gui.h"
#include "input.h"
#include "snes9x/snes9x.h"
#include "snes9x/memmap.h"
extern void UpdatePlaybackRate(void);
/*** Snes9x GFX Buffer ***/
#define SNES9XGFX_SIZE (EXT_PITCH*EXT_HEIGHT)
#define FILTERMEM_SIZE (512*MAX_SNES_HEIGHT*4)
static unsigned char * snes9xgfx = NULL;
unsigned char * filtermem = NULL; // only want ((512*2) X (239*2))
/*** 2D Video ***/
static u32 *xfb[2] = { NULL, NULL }; // Double buffered
static int whichfb = 0; // Switch
GXRModeObj *vmode = NULL; // Current video mode
int screenheight = 480;
int screenwidth = 640;
static int oldRenderMode = -1; // set to GCSettings.render when changing (temporarily) to another mode
int CheckVideo = 0; // for forcing video reset
/*** GX ***/
#define TEX_WIDTH 512
#define TEX_HEIGHT 512
#define TEXTUREMEM_SIZE TEX_WIDTH*(TEX_HEIGHT+8)*2
static unsigned char texturemem[TEXTUREMEM_SIZE] ATTRIBUTE_ALIGN (32);
#define DEFAULT_FIFO_SIZE 256 * 1024
static unsigned int copynow = GX_FALSE;
static unsigned char gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
static GXTexObj texobj;
static Mtx view;
static Mtx GXmodelView2D;
static int vwidth, vheight, oldvwidth, oldvheight;
u8 * gameScreenPng = NULL;
int gameScreenPngSize = 0;
u32 FrameTimer = 0;
bool vmode_60hz = true;
int timerstyle = 0;
bool progressive = 0;
#define HASPECT 320
#define VASPECT 240
/* New texture based scaler */
typedef struct tagcamera
{
guVector pos;
guVector up;
guVector view;
}
camera;
/*** Square Matrix
This structure controls the size of the image on the screen.
Think of the output as a -80 x 80 by -60 x 60 graph.
***/
s16 square[] ATTRIBUTE_ALIGN (32) =
{
/*
* X, Y, Z
* Values set are for roughly 4:3 aspect
*/
-HASPECT, VASPECT, 0, // 0
HASPECT, VASPECT, 0, // 1
HASPECT, -VASPECT, 0, // 2
-HASPECT, -VASPECT, 0 // 3
};
static camera cam = {
{0.0F, 0.0F, 0.0F},
{0.0F, 0.5F, 0.0F},
{0.0F, 0.0F, -0.5F}
};
/***
*** Custom Video modes (used to emulate original console video modes)
***/
/** Original SNES PAL Resolutions: **/
/* 239 lines progressive (PAL 50Hz) */
static GXRModeObj TV_239p =
{
VI_TVMODE_PAL_DS, // viDisplayMode
512, // fbWidth
239, // efbHeight
239, // xfbHeight
(VI_MAX_WIDTH_PAL - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL/2 - 478/2)/2, // viYOrigin
640, // viWidth
478, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 478 lines interlaced (PAL 50Hz, Deflicker) */
static GXRModeObj TV_478i =
{
VI_TVMODE_PAL_INT, // viDisplayMode
512, // fbWidth
478, // efbHeight
478, // xfbHeight
(VI_MAX_WIDTH_PAL - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL - 478)/2, // viYOrigin
640, // viWidth
478, // viHeight
VI_XFBMODE_DF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
8, // line n-1
8, // line n-1
10, // line n
12, // line n
10, // line n
8, // line n+1
8 // line n+1
}
};
/** Original SNES NTSC Resolutions: **/
/* 224 lines progressive (NTSC or PAL 60Hz) */
static GXRModeObj TV_224p =
{
VI_TVMODE_EURGB60_DS, // viDisplayMode
512, // fbWidth
224, // efbHeight
224, // xfbHeight
(VI_MAX_WIDTH_NTSC - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC/2 - 448/2)/2, // viYOrigin
640, // viWidth
448, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 448 lines interlaced (NTSC or PAL 60Hz, Deflicker) */
static GXRModeObj TV_448i =
{
VI_TVMODE_EURGB60_INT, // viDisplayMode
512, // fbWidth
448, // efbHeight
448, // xfbHeight
(VI_MAX_WIDTH_NTSC - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC - 448)/2, // viYOrigin
640, // viWidth
448, // viHeight
VI_XFBMODE_DF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
8, // line n-1
8, // line n-1
10, // line n
12, // line n
10, // line n
8, // line n+1
8 // line n+1
}
};
static GXRModeObj TV_Custom;
/* TV Modes table */
static GXRModeObj *tvmodes[4] = {
&TV_239p, &TV_478i, /* Snes PAL video modes */
&TV_224p, &TV_448i, /* Snes NTSC video modes */
};
/****************************************************************************
* VideoThreading
***************************************************************************/
#define TSTACK 16384
static lwp_t vbthread = LWP_THREAD_NULL;
static unsigned char vbstack[TSTACK];
/****************************************************************************
* vbgetback
*
* This callback enables the emulator to keep running while waiting for a
* vertical blank.
*
* Putting LWP to good use :)
***************************************************************************/
static void *
vbgetback (void *arg)
{
while (1)
{
VIDEO_WaitVSync (); /**< Wait for video vertical blank */
LWP_SuspendThread (vbthread);
}
return NULL;
}
/****************************************************************************
* copy_to_xfb
*
* Stock code to copy the GX buffer to the current display mode.
* Also increments the frameticker, as it's called for each vb.
***************************************************************************/
static inline void
copy_to_xfb (u32 arg)
{
if (copynow == GX_TRUE)
{
GX_CopyDisp (xfb[whichfb], GX_TRUE);
GX_Flush ();
copynow = GX_FALSE;
}
++FrameTimer;
}
/****************************************************************************
* Scaler Support Functions
***************************************************************************/
static inline void
draw_init ()
{
GX_ClearVtxDesc ();
GX_SetVtxDesc (GX_VA_POS, GX_INDEX8);
GX_SetVtxDesc (GX_VA_CLR0, GX_INDEX8);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_S16, 0);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetArray (GX_VA_POS, square, 3 * sizeof (s16));
GX_SetNumTexGens (1);
GX_SetNumChans (0);
GX_SetTexCoordGen (GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
GX_SetTevOp (GX_TEVSTAGE0, GX_REPLACE);
GX_SetTevOrder (GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLORNULL);
memset (&view, 0, sizeof (Mtx));
guLookAt(view, &cam.pos, &cam.up, &cam.view);
GX_LoadPosMtxImm (view, GX_PNMTX0);
GX_InvVtxCache (); // update vertex cache
}
static inline void
draw_vert (u8 pos, u8 c, f32 s, f32 t)
{
GX_Position1x8 (pos);
GX_Color1x8 (c);
GX_TexCoord2f32 (s, t);
}
static inline void
draw_square (Mtx v)
{
Mtx m; // model matrix.
Mtx mv; // modelview matrix.
guMtxIdentity (m);
guMtxTransApply (m, m, 0, 0, -100);
guMtxConcat (v, m, mv);
GX_LoadPosMtxImm (mv, GX_PNMTX0);
GX_Begin (GX_QUADS, GX_VTXFMT0, 4);
draw_vert (0, 0, 0.0, 0.0);
draw_vert (1, 0, 1.0, 0.0);
draw_vert (2, 0, 1.0, 1.0);
draw_vert (3, 0, 0.0, 1.0);
GX_End ();
}
/****************************************************************************
* StopGX
*
* Stops GX (when exiting)
***************************************************************************/
void StopGX()
{
GX_AbortFrame();
GX_Flush();
VIDEO_SetBlack(TRUE);
VIDEO_Flush();
}
/****************************************************************************
* FindVideoMode
*
* Finds the optimal video mode, or uses the user-specified one
* Also configures original video modes
***************************************************************************/
static GXRModeObj * FindVideoMode()
{
GXRModeObj * mode;
// choose the desired video mode
switch(GCSettings.videomode)
{
case 1: // NTSC (480i)
mode = &TVNtsc480IntDf;
break;
case 2: // Progressive (480p)
mode = &TVNtsc480Prog;
break;
case 3: // PAL (50Hz)
mode = &TVPal576IntDfScale;
break;
case 4: // PAL (60Hz)
mode = &TVEurgb60Hz480IntDf;
break;
default:
mode = VIDEO_GetPreferredMode(NULL);
#ifdef HW_DOL
/* we have component cables, but the preferred mode is interlaced
* why don't we switch into progressive?
* on the Wii, the user can do this themselves on their Wii Settings */
if(VIDEO_HaveComponentCable())
mode = &TVNtsc480Prog;
#endif
break;
}
// configure original modes
switch (mode->viTVMode >> 2)
{
case VI_PAL:
// 576 lines (PAL 50Hz)
vmode_60hz = false;
// Original Video modes (forced to PAL 50Hz)
// set video signal mode
TV_224p.viTVMode = VI_TVMODE_PAL_DS;
TV_448i.viTVMode = VI_TVMODE_PAL_INT;
// set VI position
TV_224p.viYOrigin = (VI_MAX_HEIGHT_PAL/2 - 448/2)/2;
TV_448i.viYOrigin = (VI_MAX_HEIGHT_PAL - 448)/2;
break;
case VI_NTSC:
// 480 lines (NTSC 60Hz)
vmode_60hz = true;
// Original Video modes (forced to NTSC 60hz)
// set video signal mode
TV_239p.viTVMode = VI_TVMODE_NTSC_DS;
TV_478i.viTVMode = VI_TVMODE_NTSC_INT;
TV_224p.viTVMode = VI_TVMODE_NTSC_DS;
TV_448i.viTVMode = VI_TVMODE_NTSC_INT;
// set VI position
TV_239p.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 478/2)/2;
TV_478i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 478)/2;
TV_224p.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 448/2)/2;
TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 448)/2;
break;
default:
// 480 lines (PAL 60Hz)
vmode_60hz = true;
// Original Video modes (forced to PAL 60hz)
// set video signal mode
TV_239p.viTVMode = VI_TVMODE(mode->viTVMode >> 2, VI_NON_INTERLACE);
TV_478i.viTVMode = VI_TVMODE(mode->viTVMode >> 2, VI_INTERLACE);
TV_224p.viTVMode = VI_TVMODE(mode->viTVMode >> 2, VI_NON_INTERLACE);
TV_448i.viTVMode = VI_TVMODE(mode->viTVMode >> 2, VI_INTERLACE);
// set VI position
TV_239p.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 478/2)/2;
TV_478i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 478)/2;
TV_224p.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 448/2)/2;
TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 448)/2;
break;
}
// check for progressive scan
if (mode->viTVMode == VI_TVMODE_NTSC_PROG)
progressive = true;
else
progressive = false;
#ifdef HW_RVL
if (CONF_GetAspectRatio() == CONF_ASPECT_16_9)
mode->viWidth = 678;
else
mode->viWidth = 672;
if (vmode_60hz)
{
mode->viXOrigin = (VI_MAX_WIDTH_NTSC - mode->viWidth) / 2;
mode->viYOrigin = (VI_MAX_HEIGHT_NTSC - mode->viHeight) / 2;
}
else
{
mode->viXOrigin = (VI_MAX_WIDTH_PAL - mode->viWidth) / 2;
mode->viYOrigin = (VI_MAX_HEIGHT_PAL - mode->viHeight) / 2;
}
#endif
return mode;
}
/****************************************************************************
* SetupVideoMode
*
* Sets up the given video mode
***************************************************************************/
static void SetupVideoMode(GXRModeObj * mode)
{
if(vmode == mode)
return;
VIDEO_SetPostRetraceCallback (NULL);
copynow = GX_FALSE;
VIDEO_Configure (mode);
VIDEO_Flush();
// Clear framebuffers etc.
VIDEO_ClearFrameBuffer (mode, xfb[0], COLOR_BLACK);
VIDEO_ClearFrameBuffer (mode, xfb[1], COLOR_BLACK);
VIDEO_SetNextFramebuffer (xfb[0]);
VIDEO_SetBlack (FALSE);
VIDEO_Flush ();
VIDEO_WaitVSync ();
if (mode->viTVMode & VI_NON_INTERLACE)
VIDEO_WaitVSync();
else
while (VIDEO_GetNextField())
VIDEO_WaitVSync();
VIDEO_SetPostRetraceCallback ((VIRetraceCallback)copy_to_xfb);
vmode = mode;
}
/****************************************************************************
* InitGCVideo
*
* This function MUST be called at startup.
* - also sets up menu video mode
***************************************************************************/
void
InitGCVideo ()
{
VIDEO_Init();
// Allocate the video buffers
xfb[0] = (u32 *) memalign(32, 640*576*2);
xfb[1] = (u32 *) memalign(32, 640*576*2);
DCInvalidateRange(xfb[0], 640*576*2);
DCInvalidateRange(xfb[1], 640*576*2);
xfb[0] = (u32 *) MEM_K0_TO_K1 (xfb[0]);
xfb[1] = (u32 *) MEM_K0_TO_K1 (xfb[1]);
GXRModeObj *rmode = FindVideoMode();
SetupVideoMode(rmode);
#ifdef HW_RVL
InitLUTs(); // init LUTs for hq2x
#endif
LWP_CreateThread (&vbthread, vbgetback, NULL, vbstack, TSTACK, 68);
// Initialize GX
GXColor background = { 0, 0, 0, 0xff };
memset (&gp_fifo, 0, DEFAULT_FIFO_SIZE);
GX_Init (&gp_fifo, DEFAULT_FIFO_SIZE);
GX_SetCopyClear (background, 0x00ffffff);
GX_SetDispCopyGamma (GX_GM_1_0);
GX_SetCullMode (GX_CULL_NONE);
vwidth = 100;
vheight = 100;
}
void ResetFbWidth(int width, GXRModeObj *rmode)
{
if(rmode->fbWidth == width)
return;
rmode->fbWidth = width;
if(rmode != vmode)
return;
GX_InvVtxCache();
VIDEO_Configure(rmode);
VIDEO_Flush();
}
/****************************************************************************
* ResetVideo_Emu
*
* Reset the video/rendering mode for the emulator rendering
****************************************************************************/
void
ResetVideo_Emu ()
{
GXRModeObj *rmode;
Mtx44 p;
int i = -1;
// original render mode or hq2x
if (GCSettings.render == 0)
{
for (int j=0; j<4; j++)
{
if (tvmodes[j]->efbHeight == vheight)
{
i = j;
break;
}
}
}
if(i >= 0) // we found a matching original mode
{
rmode = tvmodes[i];
// hack to fix video output for hq2x (only when actually filtering; h<=239, w<=256)
if (GCSettings.FilterMethod != FILTER_NONE && vheight <= 239 && vwidth <= 256)
{
memcpy(&TV_Custom, tvmodes[i], sizeof(TV_Custom));
rmode = &TV_Custom;
rmode->fbWidth = 512;
rmode->efbHeight *= 2;
rmode->xfbHeight *= 2;
rmode->xfbMode = VI_XFBMODE_DF;
rmode->viTVMode |= VI_INTERLACE;
}
Settings.SoundInputRate = 31894;
UpdatePlaybackRate();
}
else
{
rmode = FindVideoMode();
if (GCSettings.widescreen)
ResetFbWidth(640, rmode);
else
ResetFbWidth(512, rmode);
Settings.SoundInputRate = 31953;
UpdatePlaybackRate();
}
SetupVideoMode(rmode); // reconfigure VI
GXColor background = {0, 0, 0, 255};
GX_SetCopyClear (background, 0x00ffffff);
GX_SetViewport (0, 0, rmode->fbWidth, rmode->efbHeight, 0, 1);
GX_SetDispCopyYScale ((f32) rmode->xfbHeight / (f32) rmode->efbHeight);
GX_SetScissor (0, 0, rmode->fbWidth, rmode->efbHeight);
GX_SetDispCopySrc (0, 0, rmode->fbWidth, rmode->efbHeight);
GX_SetDispCopyDst (rmode->fbWidth, rmode->xfbHeight);
GX_SetCopyFilter(rmode->aa, rmode->sample_pattern, (rmode->xfbMode == VI_XFBMODE_SF) ? GX_FALSE : GX_TRUE, rmode->vfilter);
GX_SetFieldMode (rmode->field_rendering, ((rmode->viHeight == 2 * rmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
if (rmode->aa)
GX_SetPixelFmt(GX_PF_RGB565_Z16, GX_ZC_LINEAR);
else
GX_SetPixelFmt(GX_PF_RGB8_Z24, GX_ZC_LINEAR);
GX_SetZMode (GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate (GX_TRUE);
guOrtho(p, rmode->efbHeight/2, -(rmode->efbHeight/2), -(rmode->fbWidth/2), rmode->fbWidth/2, 100, 1000); // matrix, t, b, l, r, n, f
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
draw_init ();
}
/****************************************************************************
* MakeTexture
*
* Modified for a buffer with an offset (border)
***************************************************************************/
void
MakeTexture (const void *src, void *dst, s32 width, s32 height)
{
register u32 tmp0=0,tmp1=0,tmp2=0,tmp3=0;
__asm__ __volatile__ (
" srwi %6,%6,2\n"
" srwi %7,%7,2\n"
" subi %3,%4,4\n"
" mr %4,%3\n"
" subi %4,%4,4\n"
"2: mtctr %6\n"
" mr %0,%5\n"
//
"1: lwz %1,0(%5)\n" //1
" stwu %1,8(%4)\n"
" lwz %2,4(%5)\n" //1
" stwu %2,8(%3)\n"
" lwz %1,1032(%5)\n" //2
" stwu %1,8(%4)\n"
" lwz %2,1036(%5)\n" //2
" stwu %2,8(%3)\n"
" lwz %1,2064(%5)\n" //3
" stwu %1,8(%4)\n"
" lwz %2,2068(%5)\n" //3
" stwu %2,8(%3)\n"
" lwz %1,3096(%5)\n" //4
" stwu %1,8(%4)\n"
" lwz %2,3100(%5)\n" //4
" stwu %2,8(%3)\n"
" addi %5,%5,8\n"
" bdnz 1b\n"
" addi %5,%0,4128\n" //5
" subic. %7,%7,1\n"
" bne 2b"
// 0 1 2 3 4 5 6 7
: "=&b"(tmp0), "=&b"(tmp1), "=&b"(tmp2), "=&b"(tmp3), "+b"(dst) : "b"(src), "b"(width), "b"(height)
);
}
/****************************************************************************
* Update Video
***************************************************************************/
uint32 prevRenderedFrameCount = 0;
int fscale = 1;
void
update_video (int width, int height)
{
vwidth = width;
vheight = height;
if(CheckVideo == 2 && IPPU.RenderedFramesCount == prevRenderedFrameCount)
return; // we haven't rendered any frames yet, so we can't draw anything!
// Ensure previous vb has complete
while ((LWP_ThreadIsSuspended (vbthread) == 0) || (copynow == GX_TRUE))
usleep (50);
whichfb ^= 1;
if (oldvheight != vheight || oldvwidth != vwidth) // if rendered width/height changes, update scaling
CheckVideo = 1;
if (CheckVideo) // if we get back from the menu, and have rendered at least 1 frame
{
int xscale, yscale;
#ifdef HW_RVL
if(vwidth <= 256)
fscale = GetFilterScale((RenderFilter)GCSettings.FilterMethod);
else
fscale = 1;
#endif
ResetVideo_Emu (); // reset video to emulator rendering settings
/** Update scaling **/
if (GCSettings.render == 0) // original render mode
{
if (GCSettings.FilterMethod != FILTER_NONE && vheight <= 239 && vwidth <= 256)
{ // filters; normal operation
xscale = vwidth;
yscale = vheight;
}
else
{ // no filtering
fscale = 1;
xscale = 256;
yscale = vheight / 2;
}
}
else // unfiltered and filtered mode
{
xscale = 256;
if(vheight == 224 || vheight == 448)
yscale = 224;
else
yscale = 239;
}
if (GCSettings.widescreen)
{
if(GCSettings.render == 0)
xscale = (3*xscale)/4;
else
xscale = 256; // match the original console's width for "widescreen" to prevent flickering
}
xscale *= GCSettings.zoomHor;
yscale *= GCSettings.zoomVert;
square[6] = square[3] = xscale + GCSettings.xshift;
square[0] = square[9] = -xscale + GCSettings.xshift;
square[4] = square[1] = yscale - GCSettings.yshift;
square[7] = square[10] = -yscale - GCSettings.yshift;
DCFlushRange (square, 32); // update memory BEFORE the GPU accesses it!
draw_init ();
// initialize the texture obj we are going to use
GX_InitTexObj (&texobj, texturemem, vwidth*fscale, vheight*fscale, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
if (GCSettings.render == 0 || GCSettings.render == 2)
GX_InitTexObjLOD(&texobj,GX_NEAR,GX_NEAR_MIP_NEAR,2.5,9.0,0.0,GX_FALSE,GX_FALSE,GX_ANISO_1); // original/unfiltered video mode: force texture filtering OFF
GX_LoadTexObj (&texobj, GX_TEXMAP0); // load texture object so its ready to use
oldvwidth = vwidth;
oldvheight = vheight;
CheckVideo = 0;
}
#ifdef HW_RVL
// convert image to texture
if (GCSettings.FilterMethod != FILTER_NONE && vheight <= 239 && vwidth <= 256) // don't do filtering on game textures > 256 x 239
{
FilterMethod ((uint8*) GFX.Screen, EXT_PITCH, (uint8*) filtermem, vwidth*fscale*2, vwidth, vheight);
MakeTexture565((char *) filtermem, (char *) texturemem, vwidth*fscale, vheight*fscale);
}
else
#endif
{
MakeTexture((char *) GFX.Screen, (char *) texturemem, vwidth, vheight);
}
DCFlushRange (texturemem, TEXTUREMEM_SIZE); // update the texture memory
GX_InvalidateTexAll ();
draw_square (view); // draw the quad
GX_DrawDone ();
if(ScreenshotRequested)
{
if(GCSettings.render == 0) // we can't take a screenshot in Original mode
{
oldRenderMode = 0;
GCSettings.render = 2; // switch to unfiltered mode
CheckVideo = 1; // request the switch
}
else
{
ScreenshotRequested = 0;
TakeScreenshot();
if(oldRenderMode != -1)
{
GCSettings.render = oldRenderMode;
oldRenderMode = -1;
}
ConfigRequested = 1;
}
}
VIDEO_SetNextFramebuffer (xfb[whichfb]);
VIDEO_Flush ();
copynow = GX_TRUE;
// Return to caller, don't waste time waiting for vb
LWP_ResumeThread (vbthread);
}
void AllocGfxMem()
{
snes9xgfx = (unsigned char *)memalign(32, SNES9XGFX_SIZE);
memset(snes9xgfx, 0, SNES9XGFX_SIZE);
#ifdef HW_RVL
filtermem = (unsigned char *)memalign(32, FILTERMEM_SIZE);
memset(filtermem, 0, FILTERMEM_SIZE);
#endif
GFX.Pitch = EXT_PITCH;
GFX.Screen = (uint16*)(snes9xgfx + EXT_OFFSET);
}
/****************************************************************************
* setGFX
*
* Setup the global GFX information for Snes9x
***************************************************************************/
void
setGFX ()
{
GFX.Pitch = EXT_PITCH;
}
/****************************************************************************
* TakeScreenshot
*
* Copies the current screen into a GX texture
***************************************************************************/
void TakeScreenshot()
{
IMGCTX pngContext = PNGU_SelectImageFromBuffer(savebuffer);
if (pngContext != NULL)
{
gameScreenPngSize = PNGU_EncodeFromEFB(pngContext, vmode->fbWidth, vmode->efbHeight);
PNGU_ReleaseImageContext(pngContext);
gameScreenPng = (u8 *)malloc(gameScreenPngSize);
memcpy(gameScreenPng, savebuffer, gameScreenPngSize);
}
}
/****************************************************************************
* ResetVideo_Menu
*
* Reset the video/rendering mode for the menu
****************************************************************************/
void
ResetVideo_Menu ()
{
Mtx44 p;
f32 yscale;
u32 xfbHeight;
GXRModeObj * rmode = FindVideoMode();
SetupVideoMode(rmode); // reconfigure VI
// clears the bg to color and clears the z buffer
GXColor background = {0, 0, 0, 255};
GX_SetCopyClear (background, 0x00ffffff);
yscale = GX_GetYScaleFactor(vmode->efbHeight,vmode->xfbHeight);
xfbHeight = GX_SetDispCopyYScale(yscale);
GX_SetScissor(0,0,vmode->fbWidth,vmode->efbHeight);
GX_SetDispCopySrc(0,0,vmode->fbWidth,vmode->efbHeight);
GX_SetDispCopyDst(vmode->fbWidth,xfbHeight);
GX_SetCopyFilter(vmode->aa,vmode->sample_pattern,GX_TRUE,vmode->vfilter);
GX_SetFieldMode(vmode->field_rendering,((vmode->viHeight==2*vmode->xfbHeight)?GX_ENABLE:GX_DISABLE));
if (vmode->aa)
GX_SetPixelFmt(GX_PF_RGB565_Z16, GX_ZC_LINEAR);
else
GX_SetPixelFmt(GX_PF_RGB8_Z24, GX_ZC_LINEAR);
// setup the vertex descriptor
// tells the flipper to expect direct data
GX_ClearVtxDesc();
GX_InvVtxCache ();
GX_InvalidateTexAll();
GX_SetVtxDesc(GX_VA_TEX0, GX_NONE);
GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
GX_SetVtxDesc (GX_VA_CLR0, GX_DIRECT);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetZMode (GX_FALSE, GX_LEQUAL, GX_TRUE);
GX_SetNumChans(1);
GX_SetNumTexGens(1);
GX_SetTevOp (GX_TEVSTAGE0, GX_PASSCLR);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
GX_SetTexCoordGen(GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
guMtxIdentity(GXmodelView2D);
guMtxTransApply (GXmodelView2D, GXmodelView2D, 0.0F, 0.0F, -50.0F);
GX_LoadPosMtxImm(GXmodelView2D,GX_PNMTX0);
guOrtho(p,0,479,0,639,0,300);
GX_LoadProjectionMtx(p, GX_ORTHOGRAPHIC);
GX_SetViewport(0,0,vmode->fbWidth,vmode->efbHeight,0,1);
GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_CLEAR);
GX_SetAlphaUpdate(GX_TRUE);
}
/****************************************************************************
* Menu_Render
*
* Renders everything current sent to GX, and flushes video
***************************************************************************/
void Menu_Render()
{
whichfb ^= 1; // flip framebuffer
GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate(GX_TRUE);
GX_CopyDisp(xfb[whichfb],GX_TRUE);
GX_DrawDone();
VIDEO_SetNextFramebuffer(xfb[whichfb]);
VIDEO_Flush();
VIDEO_WaitVSync();
}
/****************************************************************************
* Menu_DrawImg
*
* Draws the specified image on screen using GX
***************************************************************************/
void Menu_DrawImg(f32 xpos, f32 ypos, u16 width, u16 height, u8 data[],
f32 degrees, f32 scaleX, f32 scaleY, u8 alpha)
{
if(data == NULL)
return;
GXTexObj texObj;
GX_InitTexObj(&texObj, data, width,height, GX_TF_RGBA8,GX_CLAMP, GX_CLAMP,GX_FALSE);
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_InvalidateTexAll();
GX_SetTevOp (GX_TEVSTAGE0, GX_MODULATE);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
Mtx m,m1,m2, mv;
width >>= 1;
height >>= 1;
guMtxIdentity (m1);
guMtxScaleApply(m1,m1,scaleX,scaleY,1.0);
guVector axis = (guVector) {0 , 0, 1 };
guMtxRotAxisDeg (m2, &axis, degrees);
guMtxConcat(m2,m1,m);
guMtxTransApply(m,m, xpos+width,ypos+height,0);
guMtxConcat (GXmodelView2D, m, mv);
GX_LoadPosMtxImm (mv, GX_PNMTX0);
GX_Begin(GX_QUADS, GX_VTXFMT0,4);
GX_Position3f32(-width, -height, 0);
GX_Color4u8(0xFF,0xFF,0xFF,alpha);
GX_TexCoord2f32(0, 0);
GX_Position3f32(width, -height, 0);
GX_Color4u8(0xFF,0xFF,0xFF,alpha);
GX_TexCoord2f32(1, 0);
GX_Position3f32(width, height, 0);
GX_Color4u8(0xFF,0xFF,0xFF,alpha);
GX_TexCoord2f32(1, 1);
GX_Position3f32(-width, height, 0);
GX_Color4u8(0xFF,0xFF,0xFF,alpha);
GX_TexCoord2f32(0, 1);
GX_End();
GX_LoadPosMtxImm (GXmodelView2D, GX_PNMTX0);
GX_SetTevOp (GX_TEVSTAGE0, GX_PASSCLR);
GX_SetVtxDesc (GX_VA_TEX0, GX_NONE);
}
/****************************************************************************
* Menu_DrawRectangle
*
* Draws a rectangle at the specified coordinates using GX
***************************************************************************/
void Menu_DrawRectangle(f32 x, f32 y, f32 width, f32 height, GXColor color, u8 filled)
{
long n = 4;
f32 x2 = x+width;
f32 y2 = y+height;
guVector v[] = {{x,y,0.0f}, {x2,y,0.0f}, {x2,y2,0.0f}, {x,y2,0.0f}, {x,y,0.0f}};
u8 fmt = GX_TRIANGLEFAN;
if(!filled)
{
fmt = GX_LINESTRIP;
n = 5;
}
GX_Begin(fmt, GX_VTXFMT0, n);
for(long i=0; i<n; ++i)
{
GX_Position3f32(v[i].x, v[i].y, v[i].z);
GX_Color4u8(color.r, color.g, color.b, color.a);
}
GX_End();
}
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