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https://github.com/dborth/fceugx.git
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added comments for modified code
This commit is contained in:
ekeeke31
parent
fad26aecb7
commit
6935483ae4
@ -411,10 +411,10 @@ UpdateScaling()
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{
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int xscale, yscale;
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/** Update scaling **/
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// update scaling
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if (GCSettings.render == 0) // original render mode
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{
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xscale = 640 / 2; /* use GX scaler instead VI (less artifacts) */
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xscale = 640 / 2; // use GX scaler instead VI
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yscale = 240 / 2;
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}
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else // unfiltered and filtered mode
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@ -463,7 +463,7 @@ void
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InitGCVideo ()
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{
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// init video
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VIDEO_Init ();
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VIDEO_Init ();
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// get default video mode
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vmode = VIDEO_GetPreferredMode(NULL);
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@ -504,41 +504,42 @@ InitGCVideo ()
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if (vmode->viTVMode == VI_TVMODE_NTSC_PROG)
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progressive = true;
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VIDEO_Configure (vmode);
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screenheight = vmode->xfbHeight;
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// configure VI
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VIDEO_Configure (vmode);
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// always 480 lines
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screenheight = vmode->xfbHeight;
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// Allocate the video buffers
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xfb[0] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
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xfb[1] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
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xfb[0] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
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xfb[1] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
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// A console is always useful while debugging.
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console_init (xfb[0], 20, 64, vmode->fbWidth, vmode->xfbHeight, vmode->fbWidth * 2);
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// A console is always useful while debugging.
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console_init (xfb[0], 20, 64, vmode->fbWidth, vmode->xfbHeight, vmode->fbWidth * 2);
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// Clear framebuffers etc.
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VIDEO_ClearFrameBuffer (vmode, xfb[0], COLOR_BLACK);
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VIDEO_ClearFrameBuffer (vmode, xfb[1], COLOR_BLACK);
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VIDEO_SetNextFramebuffer (xfb[0]);
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// Clear framebuffers etc.
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VIDEO_ClearFrameBuffer (vmode, xfb[0], COLOR_BLACK);
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VIDEO_ClearFrameBuffer (vmode, xfb[1], COLOR_BLACK);
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VIDEO_SetNextFramebuffer (xfb[0]);
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// video callbacks
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VIDEO_SetPostRetraceCallback ((VIRetraceCallback)UpdatePadsCB);
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VIDEO_SetPreRetraceCallback ((VIRetraceCallback)copy_to_xfb);
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VIDEO_SetPreRetraceCallback ((VIRetraceCallback)copy_to_xfb);
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VIDEO_SetBlack (FALSE);
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VIDEO_Flush ();
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VIDEO_WaitVSync ();
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if (vmode->viTVMode & VI_NON_INTERLACE)
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VIDEO_WaitVSync ();
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VIDEO_SetBlack (FALSE);
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VIDEO_Flush ();
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VIDEO_WaitVSync ();
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if (vmode->viTVMode & VI_NON_INTERLACE)
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VIDEO_WaitVSync ();
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copynow = GX_FALSE;
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StartGX ();
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copynow = GX_FALSE;
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StartGX ();
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draw_init ();
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InitVideoThread ();
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InitVideoThread ();
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// Finally, the video is up and ready for use :)
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// Finally, the video is up and ready for use :)
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}
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/****************************************************************************
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@ -552,18 +553,19 @@ ResetVideo_Emu ()
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GXRModeObj *rmode;
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Mtx p;
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switch (vmode->viTVMode >> 2)
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// set VI modes
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switch (vmode->viTVMode >> 2)
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{
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case VI_PAL: /* 576 lines (PAL 50Hz) */
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case VI_PAL: /* 574 lines (PAL 50Hz) */
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// set video signal mode (50Hz only)
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// 50Hz only
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NTSC_240p.viTVMode = VI_TVMODE_PAL_DS;
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NTSC_240p.viYOrigin = (VI_MAX_HEIGHT_PAL - 480)/2;
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break;
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case VI_NTSC: /* 480 lines (NTSC 60hz) */
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// set video signal mode (60Hz only)
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// 60Hz only
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PAL_240p.viTVMode = VI_TVMODE_NTSC_DS;
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PAL_240p.viYOrigin = (VI_MAX_HEIGHT_NTSC - 480)/2;
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NTSC_240p.viTVMode = VI_TVMODE_NTSC_DS;
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@ -571,14 +573,15 @@ ResetVideo_Emu ()
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default: /* 480 lines (PAL 60Hz) */
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// set video signal mode (supports both 50/60Hz but we use 60hz for both PAL & NTSC settings)
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// supports both 50/60Hz but better use 60hz by default
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PAL_240p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE);
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PAL_240p.viYOrigin = (VI_MAX_HEIGHT_NTSC - 480)/2;
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NTSC_240p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE);
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break;
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}
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if (GCSettings.render == 0) // original render mode
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// choose current VI mode
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if (GCSettings.render == 0) // original render mode
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{
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rmode = tvmodes[GCSettings.timing];
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}
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@ -591,26 +594,23 @@ ResetVideo_Emu ()
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rmode = vmode; // same mode as menu
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}
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VIDEO_Configure (rmode);
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// reconfigure VI
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VIDEO_Configure (rmode);
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VIDEO_ClearFrameBuffer (rmode, xfb[whichfb], COLOR_BLACK);
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VIDEO_Flush();
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VIDEO_WaitVSync();
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if (rmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
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else while (VIDEO_GetNextField()) VIDEO_WaitVSync();
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GX_SetViewport (0, 0, rmode->fbWidth, rmode->efbHeight, 0, 1);
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// reconfigure GX
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GX_SetViewport (0, 0, rmode->fbWidth, rmode->efbHeight, 0, 1);
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GX_SetDispCopyYScale ((f32) rmode->xfbHeight / (f32) rmode->efbHeight);
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GX_SetScissor (0, 0, rmode->fbWidth, rmode->efbHeight);
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GX_SetDispCopySrc (0, 0, rmode->fbWidth, rmode->efbHeight);
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GX_SetDispCopyDst (rmode->fbWidth, rmode->xfbHeight);
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GX_SetCopyFilter (rmode->aa, rmode->sample_pattern, (GCSettings.render == 1) ? GX_TRUE : GX_FALSE, rmode->vfilter); // Deflickering Filter only for filtered mode
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GX_SetCopyFilter (rmode->aa, rmode->sample_pattern, (GCSettings.render == 1) ? GX_TRUE : GX_FALSE, rmode->vfilter); // deflickering filter only for filtered mode
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GX_SetFieldMode (rmode->field_rendering, ((rmode->viHeight == 2 * rmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
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GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR);
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guOrtho(p, rmode->efbHeight/2, -(rmode->efbHeight/2), -(rmode->fbWidth/2), rmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f
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GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
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@ -620,6 +620,7 @@ ResetVideo_Emu ()
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if (!(GCSettings.render&1))
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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
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// set aspect ratio
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UpdateScaling();
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}
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@ -640,7 +641,7 @@ ResetVideo_Menu ()
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if (vmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
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else while (VIDEO_GetNextField()) VIDEO_WaitVSync();
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GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
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GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
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GX_SetDispCopyYScale ((f32) vmode->xfbHeight / (f32) vmode->efbHeight);
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GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight);
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@ -663,17 +664,19 @@ ResetVideo_Menu ()
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void RenderFrame(unsigned char *XBuf)
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{
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// Ensure previous vb has complete
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// Ensure previous vb has complete
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while ((LWP_ThreadIsSuspended (vbthread) == 0) || (copynow == GX_TRUE))
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usleep (50);
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whichfb ^= 1;
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if(updateScaling)
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{
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UpdateScaling();
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updateScaling --;
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}
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// swap framebuffers
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whichfb ^= 1;
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// zoom has changed
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if(updateScaling)
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{
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UpdateScaling();
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updateScaling --;
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}
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int width, height;
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u16 *texture = (unsigned short *)texturemem;
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@ -682,10 +685,10 @@ void RenderFrame(unsigned char *XBuf)
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u8 *src3 = XBuf + 512;
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u8 *src4 = XBuf + 768;
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/* clear texture objects in memory */
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// clear texture objects
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GX_InvalidateTexAll();
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// Now draw the texture
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// fill the texture
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for (height = 0; height < 240; height += 4)
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{
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for (width = 0; width < 256; width += 4)
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@ -720,15 +723,15 @@ void RenderFrame(unsigned char *XBuf)
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src4 += 768; // line 4*(N+3)
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}
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/* load texture into GX */
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// load texture into GX
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DCFlushRange(texturemem, TEX_WIDTH * TEX_HEIGHT * 2);
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GX_LoadTexObj (&texobj, GX_TEXMAP0);
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/* render textured quad */
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// render textured quad
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draw_square(view);
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GX_DrawDone();
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/* EFB is ready to be copied into XFB */
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// EFB is ready to be coied into XFB
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VIDEO_SetNextFramebuffer(xfb[whichfb]);
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VIDEO_Flush();
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copynow = GX_TRUE;
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