/**************************************************************************** * Snes9x 1.51 Nintendo Wii/Gamecube Port * * softdev July 2006 * crunchy2 May 2007 * Michniewski 2008 * * video.cpp * * Video routines ***************************************************************************/ #include #include #include #include #include #include #include #include "snes9x.h" #include "memmap.h" #include "aram.h" #include "snes9xGX.h" #include "gui.h" /*** Snes9x GFX Buffer ***/ static unsigned char snes9xgfx[1024 * 512 * 2]; /*** Memory ROM Loading ***/ extern unsigned long ARAM_ROMSIZE; extern unsigned int SMBTimer; /*** 2D Video ***/ unsigned int *xfb[2] = { NULL, NULL }; /*** Double buffered ***/ int whichfb = 0; /*** Switch ***/ GXRModeObj *vmode; /*** Menu video mode ***/ int screenheight; extern u32* backdrop; /*** GX ***/ #define TEX_WIDTH 512 #define TEX_HEIGHT 512 #define DEFAULT_FIFO_SIZE 256 * 1024 unsigned int copynow = GX_FALSE; static unsigned char gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32); static unsigned char texturemem[TEX_WIDTH * (TEX_HEIGHT + 8)] ATTRIBUTE_ALIGN (32); GXTexObj texobj; Mtx view; int vwidth, vheight, oldvwidth, oldvheight; float zoom_level = 1; int zoom_xshift = 0; int zoom_yshift = 0; u32 FrameTimer = 0; u8 vmode_60hz = 0; bool progressive = 0; #define HASPECT 320 #define VASPECT 240 /* New texture based scaler */ typedef struct tagcamera { Vector pos; Vector up; Vector 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) */ GXRModeObj TV_239p = { VI_TVMODE_PAL_DS, // viDisplayMode 256, // 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) */ 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/2 - 478/2)/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) */ GXRModeObj TV_224p = { VI_TVMODE_EURGB60_DS, // viDisplayMode 256, // 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) */ 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/2 - 448/2)/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 } }; /* TV Modes table */ GXRModeObj *tvmodes[4] = { &TV_239p, &TV_478i, /* Snes PAL video modes */ &TV_224p, &TV_448i, /* Snes NTSC video modes */ }; #ifdef VIDEO_THREADING /**************************************************************************** * VideoThreading ***************************************************************************/ #define TSTACK 16384 lwpq_t videoblankqueue; lwp_t vbthread; 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; } /**************************************************************************** * InitVideoThread * * libOGC provides a nice wrapper for LWP access. * This function sets up a new local queue and attaches the thread to it. ***************************************************************************/ void InitVideoThread () { /*** Initialise a new queue ***/ LWP_InitQueue (&videoblankqueue); /*** Create the thread on this queue ***/ LWP_CreateThread (&vbthread, vbgetback, NULL, vbstack, TSTACK, 80); } #endif /**************************************************************************** * 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 void copy_to_xfb (u32 arg) { if (copynow == GX_TRUE) { GX_CopyDisp (xfb[whichfb], GX_TRUE); GX_Flush (); copynow = GX_FALSE; } FrameTimer++; SMBTimer++; } /**************************************************************************** * Scaler Support Functions ***************************************************************************/ static 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); } static void draw_vert (u8 pos, u8 c, f32 s, f32 t) { GX_Position1x8 (pos); GX_Color1x8 (c); GX_TexCoord2f32 (s, t); } static 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 (); } /**************************************************************************** * StartGX * * This function initialises the GX. ***************************************************************************/ static void StartGX () { Mtx p; GXColor background = { 0, 0, 0, 0xff }; /*** Clear out FIFO area ***/ memset (&gp_fifo, 0, DEFAULT_FIFO_SIZE); /*** Initialise GX ***/ GX_Init (&gp_fifo, DEFAULT_FIFO_SIZE); GX_SetCopyClear (background, 0x00ffffff); GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1); GX_SetDispCopyYScale ((f32) vmode->xfbHeight / (f32) vmode->efbHeight); GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight); GX_SetDispCopySrc (0, 0, vmode->fbWidth, vmode->efbHeight); GX_SetDispCopyDst (vmode->fbWidth, vmode->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)); GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR); GX_SetCullMode (GX_CULL_NONE); GX_SetDispCopyGamma (GX_GM_1_0); GX_SetZMode (GX_TRUE, GX_LEQUAL, GX_TRUE); GX_SetColorUpdate (GX_TRUE); gui_alphasetup (); guOrtho(p, vmode->efbHeight/2, -(vmode->efbHeight/2), -(vmode->fbWidth/2), vmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC); GX_CopyDisp (xfb[whichfb], GX_TRUE); // reset xfb vwidth = 100; vheight = 100; } /**************************************************************************** * UpdatePadsCB * * called by postRetraceCallback in InitGCVideo - scans gcpad and wpad ***************************************************************************/ void UpdatePadsCB () { #ifdef HW_RVL WPAD_ScanPads(); #endif PAD_ScanPads(); } /**************************************************************************** * InitGCVideo * * This function MUST be called at startup. * - also sets up menu video mode ***************************************************************************/ void InitGCVideo () { // init video VIDEO_Init (); // get default video mode vmode = VIDEO_GetPreferredMode(NULL); switch (vmode->viTVMode >> 2) { case VI_PAL: // 576 lines (PAL 50Hz) // display should be centered vertically (borders) vmode = &TVPal574IntDfScale; vmode->xfbHeight = 480; vmode->viYOrigin = (VI_MAX_HEIGHT_PAL - 480)/2; vmode->viHeight = 480; vmode_60hz = 0; break; case VI_NTSC: // 480 lines (NTSC 60hz) vmode_60hz = 1; break; default: // 480 lines (PAL 60Hz) vmode_60hz = 1; break; } #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() && vmode == &TVNtsc480IntDf) vmode = &TVNtsc480Prog; #endif // check for progressive scan if (vmode->viTVMode == VI_TVMODE_NTSC_PROG) progressive = true; VIDEO_Configure (vmode); screenheight = vmode->xfbHeight; // Allocate the video buffers xfb[0] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode)); xfb[1] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode)); // A console is always useful while debugging. console_init (xfb[0], 20, 64, vmode->fbWidth, vmode->xfbHeight, vmode->fbWidth * 2); // Clear framebuffers etc. VIDEO_ClearFrameBuffer (vmode, xfb[0], COLOR_BLACK); VIDEO_ClearFrameBuffer (vmode, xfb[1], COLOR_BLACK); VIDEO_SetNextFramebuffer (xfb[0]); // video callbacks VIDEO_SetPostRetraceCallback ((VIRetraceCallback)UpdatePadsCB); VIDEO_SetPreRetraceCallback ((VIRetraceCallback)copy_to_xfb); VIDEO_SetBlack (FALSE); VIDEO_Flush (); VIDEO_WaitVSync (); if (vmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync (); copynow = GX_FALSE; StartGX (); draw_init (); #ifdef VIDEO_THREADING InitVideoThread (); #endif // Finally, the video is up and ready for use :) } /**************************************************************************** * ResetVideo_Emu * * Reset the video/rendering mode for the emulator rendering ****************************************************************************/ void ResetVideo_Emu () { GXRModeObj *rmode; Mtx p; switch (vmode->viTVMode >> 2) { case VI_PAL: /* 576 lines (PAL 50Hz) */ // set video signal mode TV_239p.viTVMode = VI_TVMODE_PAL_DS; TV_478i.viTVMode = VI_TVMODE_PAL_INT; TV_224p.viTVMode = VI_TVMODE_PAL_DS; TV_448i.viTVMode = VI_TVMODE_PAL_INT; // set VI position TV_239p.viXOrigin = TV_478i.viXOrigin = TV_224p.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_PAL - 640)/2; TV_239p.viYOrigin = TV_478i.viYOrigin = (VI_MAX_HEIGHT_PAL/2 - 478/2)/2; TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_PAL/2 - 448/2)/2; break; case VI_NTSC: /* 480 lines (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.viXOrigin = TV_224p.viXOrigin = TV_478i.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_NTSC - 640)/2; TV_239p.viYOrigin = TV_478i.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 478/2)/2; TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 448/2)/2; break; default: /* 480 lines (PAL 60Hz) */ // set video signal mode TV_239p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE); TV_478i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE); TV_224p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE); TV_448i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE); // set VI position TV_239p.viXOrigin = TV_224p.viXOrigin = TV_478i.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_NTSC - 640)/2; TV_239p.viYOrigin = TV_478i.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 478/2)/2; TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC/2 - 448/2)/2; break; } int i = -1; if (GCSettings.render == 0) // original render mode { for (i=0; i<4; i++) { if (tvmodes[i]->efbHeight == vheight) { // FIX: ok? tvmodes[i]->fbWidth = vwidth; // update width - some games are 512x224 (super pang) break; } } rmode = tvmodes[i]; } else if (GCSettings.render == 2) // unfiltered { rmode = vmode; } else // filtered { rmode = vmode; // same mode as menu } VIDEO_Configure (rmode); VIDEO_ClearFrameBuffer (rmode, xfb[whichfb], COLOR_BLACK); VIDEO_Flush(); VIDEO_WaitVSync(); if (rmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync(); else while (VIDEO_GetNextField()) VIDEO_WaitVSync(); 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, (GCSettings.render == 1) ? GX_TRUE : GX_FALSE, rmode->vfilter); // AA on only for filtered mode GX_SetFieldMode (rmode->field_rendering, ((rmode->viHeight == 2 * rmode->xfbHeight) ? GX_ENABLE : GX_DISABLE)); GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR); guOrtho(p, rmode->efbHeight/2, -(rmode->efbHeight/2), -(rmode->fbWidth/2), rmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC); #ifdef _DEBUG_VIDEO // log stuff fprintf(debughandle, "\n\nrmode = tvmodes[%d], field_rendering: %d", i, (rmode->viHeight == 2 * rmode->xfbHeight)); fprintf(debughandle, "\nInterlaced: %i,\t vwidth: %d, vheight: %d,\t fb_W: %u, efb_H: %u", IPPU.Interlace, vwidth, vheight, rmode->fbWidth, rmode->efbHeight); #endif } /**************************************************************************** * ResetVideo_Menu * * Reset the video/rendering mode for the menu ****************************************************************************/ void ResetVideo_Menu () { Mtx p; VIDEO_Configure (vmode); VIDEO_ClearFrameBuffer (vmode, xfb[whichfb], COLOR_BLACK); VIDEO_Flush(); VIDEO_WaitVSync(); if (vmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync(); else while (VIDEO_GetNextField()) VIDEO_WaitVSync(); GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1); GX_SetDispCopyYScale ((f32) vmode->xfbHeight / (f32) vmode->efbHeight); GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight); GX_SetDispCopySrc (0, 0, vmode->fbWidth, vmode->efbHeight); GX_SetDispCopyDst (vmode->fbWidth, vmode->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)); GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR); guOrtho(p, vmode->efbHeight/2, -(vmode->efbHeight/2), -(vmode->fbWidth/2), vmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC); } /**************************************************************************** * MakeTexture * * Proper GNU Asm rendition of the above, converted by shagkur. - Thanks! ***************************************************************************/ 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" " stwu %1,8(%4)\n" " lwz %2,4(%5)\n" " stwu %2,8(%3)\n" " lwz %1,1024(%5)\n" " stwu %1,8(%4)\n" " lwz %2,1028(%5)\n" " stwu %2,8(%3)\n" " lwz %1,2048(%5)\n" " stwu %1,8(%4)\n" " lwz %2,2052(%5)\n" " stwu %2,8(%3)\n" " lwz %1,3072(%5)\n" " stwu %1,8(%4)\n" " lwz %2,3076(%5)\n" " stwu %2,8(%3)\n" " addi %5,%5,8\n" " bdnz 1b\n" " addi %5,%0,4096\n" " subic. %7,%7,1\n" " bne 2b" // 0 1 2 3 4 5 6 7 :"=&r" (tmp0), "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "+r" (dst):"r" (src), "r" (width), "r" (height)); } /**************************************************************************** * Update Video ***************************************************************************/ uint32 prevRenderedFrameCount = 0; extern bool CheckVideo; void update_video (int width, int height) { vwidth = width; vheight = height; #ifdef VIDEO_THREADING // Ensure previous vb has complete while ((LWP_ThreadIsSuspended (vbthread) == 0) || (copynow == GX_TRUE)) #else while (copynow == GX_TRUE) #endif { usleep (50); } whichfb ^= 1; if ( oldvheight != vheight || oldvwidth != vwidth ) // if rendered width/height changes, update scaling CheckVideo = 1; if ( CheckVideo && (IPPU.RenderedFramesCount != prevRenderedFrameCount) ) // if we get back from the menu, and have rendered at least 1 frame { int xscale, yscale; ResetVideo_Emu (); // reset video to emulator rendering settings /** Update scaling **/ if (GCSettings.render == 0) // original render mode { xscale = vwidth / 2; yscale = vheight / 2; } else { // unfiltered and filtered mode xscale = vmode->fbWidth / 2; yscale = vmode->efbHeight / 2; } // aspect ratio scaling (change width scale) // yes its pretty cheap and ugly, but its easy! if (GCSettings.widescreen) xscale -= (4.0*yscale)/9; xscale *= zoom_level; yscale *= zoom_level; 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; GX_InvVtxCache (); // update vertex cache GX_InitTexObj (&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE); // initialize the texture obj we are going to use 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 #ifdef _DEBUG_VIDEO // log stuff fprintf(debughandle, "\nxscale: %d, yscale: %d", xscale, yscale); #endif oldvwidth = vwidth; oldvheight = vheight; CheckVideo = 0; } MakeTexture ((char *) GFX.Screen, (char *) texturemem, vwidth, vheight); // convert image to texture DCFlushRange (texturemem, TEX_WIDTH * TEX_HEIGHT * 2); // update the texture memory GX_InvalidateTexAll (); draw_square (view); // draw the quad GX_DrawDone (); VIDEO_SetNextFramebuffer (xfb[whichfb]); VIDEO_Flush (); copynow = GX_TRUE; #ifdef VIDEO_THREADING // Return to caller, don't waste time waiting for vb LWP_ResumeThread (vbthread); #endif } /**************************************************************************** * Zoom Functions ***************************************************************************/ void zoom (float speed) { if (zoom_level > 1) zoom_level += (speed / -100.0); else zoom_level += (speed / -200.0); if (zoom_level < 0.5) zoom_level = 0.5; else if (zoom_level > 10.0) zoom_level = 10.0; oldvheight = 0; // update video } void zoom_reset () { zoom_level = 1.0; oldvheight = 0; // update video } /**************************************************************************** * Drawing screen ***************************************************************************/ void clearscreen (int colour) { whichfb ^= 1; VIDEO_ClearFrameBuffer (vmode, xfb[whichfb], colour); #ifdef HW_RVL // on wii copy from memory memcpy ((char *) xfb[whichfb], (char *) backdrop, 640 * screenheight * 2); #else // on gc copy from aram ARAMFetch ((char *) xfb[whichfb], (char *) AR_BACKDROP, 640 * screenheight * 2); #endif } void showscreen () { copynow = GX_FALSE; VIDEO_SetNextFramebuffer (xfb[whichfb]); VIDEO_Flush (); VIDEO_WaitVSync (); } /**************************************************************************** * setGFX * * Setup the global GFX information for Snes9x ***************************************************************************/ void setGFX () { GFX.Screen = (unsigned short *) snes9xgfx; GFX.Pitch = 1024; }