242 lines
6.7 KiB
C++
242 lines
6.7 KiB
C++
/****************************************************************************
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* libwiigui Template
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* Tantric 2009
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*
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* video.cpp
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* Video routines
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***************************************************************************/
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#include <gccore.h>
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#include <ogcsys.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <math.h>
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#include <ogc/conf.h>
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#define DEFAULT_FIFO_SIZE 256 * 1024
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static unsigned int *xfb[2] = { NULL, NULL }; // Double buffered
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static int whichfb = 0; // Switch
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static GXRModeObj *vmode; // Menu video mode
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static unsigned char gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
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static Mtx GXmodelView2D;
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/****************************************************************************
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* StartGX
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*
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* Initialises GX and sets it up for use
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***************************************************************************/
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static void
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StartGX ()
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{
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GXColor background = { 0, 0, 0, 0xff };
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/*** Clear out FIFO area ***/
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memset (&gp_fifo, 0, DEFAULT_FIFO_SIZE);
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/*** Initialise GX ***/
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GX_Init (&gp_fifo, DEFAULT_FIFO_SIZE);
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GX_SetCopyClear (background, 0x00ffffff);
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GX_SetDispCopyGamma (GX_GM_1_0);
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GX_SetCullMode (GX_CULL_NONE);
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}
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/****************************************************************************
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* ResetVideo_Menu
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*
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* Reset the video/rendering mode for the menu
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****************************************************************************/
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void
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ResetVideo_Menu()
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{
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Mtx44 p;
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f32 yscale;
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u32 xfbHeight;
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VIDEO_Configure (vmode);
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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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else
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while (VIDEO_GetNextField())
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VIDEO_WaitVSync();
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// clears the bg to color and clears the z buffer
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GXColor background = {0, 0, 0, 255};
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GX_SetCopyClear (background, 0x00ffffff);
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yscale = GX_GetYScaleFactor(vmode->efbHeight,vmode->xfbHeight);
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xfbHeight = GX_SetDispCopyYScale(yscale);
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GX_SetScissor(0,0,vmode->fbWidth,vmode->efbHeight);
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GX_SetDispCopySrc(0,0,vmode->fbWidth,vmode->efbHeight);
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GX_SetDispCopyDst(vmode->fbWidth,xfbHeight);
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GX_SetCopyFilter(vmode->aa,vmode->sample_pattern,GX_TRUE,vmode->vfilter);
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GX_SetFieldMode(vmode->field_rendering,((vmode->viHeight==2*vmode->xfbHeight)?GX_ENABLE:GX_DISABLE));
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if (vmode->aa)
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GX_SetPixelFmt(GX_PF_RGB565_Z16, GX_ZC_LINEAR);
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else
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GX_SetPixelFmt(GX_PF_RGB8_Z24, GX_ZC_LINEAR);
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// setup the vertex descriptor
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// tells the flipper to expect direct data
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GX_ClearVtxDesc();
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GX_InvVtxCache ();
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GX_InvalidateTexAll();
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GX_SetVtxDesc(GX_VA_TEX0, GX_NONE);
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GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
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GX_SetVtxDesc (GX_VA_CLR0, GX_DIRECT);
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GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
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GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
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GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
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GX_SetZMode (GX_FALSE, GX_LEQUAL, GX_TRUE);
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GX_SetNumChans(1);
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GX_SetNumTexGens(1);
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GX_SetTevOp (GX_TEVSTAGE0, GX_PASSCLR);
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GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
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GX_SetTexCoordGen(GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
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guMtxIdentity(GXmodelView2D);
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guMtxTransApply (GXmodelView2D, GXmodelView2D, 0.0F, 0.0F, -200.0F);
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GX_LoadPosMtxImm(GXmodelView2D,GX_PNMTX0);
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guOrtho(p,0,479,0,639,0,300);
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GX_LoadProjectionMtx(p, GX_ORTHOGRAPHIC);
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GX_SetViewport(0,0,vmode->fbWidth,vmode->efbHeight,0,1);
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GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_CLEAR);
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GX_SetAlphaUpdate(GX_TRUE);
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}
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/****************************************************************************
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* InitVideo
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*
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* This function MUST be called at startup.
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* - also sets up menu video mode
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***************************************************************************/
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void
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InitVideo ()
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{
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VIDEO_Init();
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vmode = VIDEO_GetPreferredMode(NULL); // get default video mode
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VIDEO_Configure (vmode);
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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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// 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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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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StartGX();
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ResetVideo_Menu();
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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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* StopGX
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*
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* Stops GX (when exiting)
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***************************************************************************/
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void StopGX()
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{
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GX_AbortFrame();
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GX_Flush();
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VIDEO_SetBlack(TRUE);
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VIDEO_Flush();
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}
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/****************************************************************************
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* Menu_Render
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*
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* Renders everything current sent to GX, and flushes video
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***************************************************************************/
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void Menu_Render()
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{
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GX_DrawDone ();
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whichfb ^= 1; // flip framebuffer
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GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
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GX_SetColorUpdate(GX_TRUE);
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GX_CopyDisp(xfb[whichfb],GX_TRUE);
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VIDEO_SetNextFramebuffer(xfb[whichfb]);
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VIDEO_Flush();
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VIDEO_WaitVSync();
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}
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/****************************************************************************
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* Menu_DrawImg
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*
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* Draws the specified image on screen using GX
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***************************************************************************/
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void Menu_DrawImg(f32 xpos, f32 ypos, f32 zpos, u16 width, u16 height, u8 data[],
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f32 degrees, f32 scaleX, f32 scaleY, u8 alpha)
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{
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if(data == NULL)
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return;
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GXTexObj texObj;
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GX_InitTexObj(&texObj, data, width,height, GX_TF_RGBA8,GX_CLAMP, GX_CLAMP,GX_FALSE);
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GX_LoadTexObj(&texObj, GX_TEXMAP0);
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GX_InvalidateTexAll();
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GX_SetTevOp (GX_TEVSTAGE0, GX_MODULATE);
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GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
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Mtx m,m1,m2, mv;
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width *=.5;
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height*=.5;
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guMtxIdentity (m1);
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guMtxScaleApply(m1,m1,scaleX,scaleY,1.0);
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Vector axis = (Vector) {0 , 0, 1 };
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guMtxRotAxisDeg (m2, &axis, degrees);
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guMtxConcat(m1,m2,m);
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guMtxTransApply(m,m, xpos+width+0.5,ypos+height+0.5,zpos);
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guMtxConcat (GXmodelView2D, m, mv);
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GX_LoadPosMtxImm (mv, GX_PNMTX0);
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GX_Begin(GX_QUADS, GX_VTXFMT0,4);
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GX_Position3f32(-width, -height, 0);
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GX_Color4u8(0xFF,0xFF,0xFF,alpha);
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GX_TexCoord2f32(0, 0);
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GX_Position3f32(width, -height, 0);
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GX_Color4u8(0xFF,0xFF,0xFF,alpha);
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GX_TexCoord2f32(1, 0);
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GX_Position3f32(width, height, 0);
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GX_Color4u8(0xFF,0xFF,0xFF,alpha);
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GX_TexCoord2f32(1, 1);
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GX_Position3f32(-width, height, 0);
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GX_Color4u8(0xFF,0xFF,0xFF,alpha);
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GX_TexCoord2f32(0, 1);
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GX_End();
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GX_LoadPosMtxImm (GXmodelView2D, GX_PNMTX0);
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GX_SetTevOp (GX_TEVSTAGE0, GX_PASSCLR);
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GX_SetVtxDesc (GX_VA_TEX0, GX_NONE);
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}
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