usbloadergx/source/video.cpp

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/****************************************************************************
* libwiigui Template
* Tantric 2009
*
* video.cpp
* Video routines
***************************************************************************/
#include <gccore.h>
#include <ogcsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wiiuse/wpad.h>
#include "input.h"
#include "libwiigui/gui.h"
#include "cfg.h"
#define DEFAULT_FIFO_SIZE 256 * 1024
static unsigned int *xfb[2] = { NULL, NULL }; // Double buffered
static int whichfb = 0; // Switch
static GXRModeObj *vmode; // Menu video mode
static unsigned char gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
static Mtx GXmodelView2D;
int screenheight;
int screenwidth;
u32 frameCount = 0;
/****************************************************************************
* UpdatePadsCB
*
* called by postRetraceCallback in InitGCVideo - scans gcpad and wpad
***************************************************************************/
static void
UpdatePadsCB ()
{
frameCount++;
#ifdef HW_RVL
WPAD_ScanPads();
#endif
PAD_ScanPads();
for(int i=3; i >= 0; i--)
{
#ifdef HW_RVL
memcpy(&userInput[i].wpad, WPAD_Data(i), sizeof(WPADData));
#endif
userInput[i].chan = i;
userInput[i].pad.btns_d = PAD_ButtonsDown(i);
userInput[i].pad.btns_u = PAD_ButtonsUp(i);
userInput[i].pad.btns_h = PAD_ButtonsHeld(i);
userInput[i].pad.stickX = PAD_StickX(i);
userInput[i].pad.stickY = PAD_StickY(i);
userInput[i].pad.substickX = PAD_SubStickX(i);
userInput[i].pad.substickY = PAD_SubStickY(i);
userInput[i].pad.triggerL = PAD_TriggerL(i);
userInput[i].pad.triggerR = PAD_TriggerR(i);
}
}
/****************************************************************************
* StartGX
*
* Initialises GX and sets it up for use
***************************************************************************/
static void
StartGX ()
{
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_SetDispCopyGamma (GX_GM_1_0);
GX_SetCullMode (GX_CULL_NONE);
}
/****************************************************************************
* ResetVideo_Menu
*
* Reset the video/rendering mode for the menu
****************************************************************************/
void
ResetVideo_Menu()
{
Mtx44 p;
f32 yscale;
u32 xfbHeight;
VIDEO_Configure (vmode);
VIDEO_Flush();
VIDEO_WaitVSync();
if (vmode->viTVMode & VI_NON_INTERLACE)
VIDEO_WaitVSync();
else
while (VIDEO_GetNextField())
VIDEO_WaitVSync();
// 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, -200.0F);
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);
}
/****************************************************************************
* InitVideo
*
* This function MUST be called at startup.
* - also sets up menu video mode
***************************************************************************/
void
InitVideo ()
{
VIDEO_Init();
vmode = VIDEO_GetPreferredMode(NULL); // get default video mode
// widescreen fix
if(CFG.widescreen)
{
vmode->viWidth = VI_MAX_WIDTH_PAL-12;
vmode->viXOrigin = ((VI_MAX_WIDTH_PAL - vmode->viWidth) / 2) + 2;
}
VIDEO_Configure (vmode);
screenheight = 480;
screenwidth = vmode->fbWidth;
// 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 callback
VIDEO_SetPostRetraceCallback ((VIRetraceCallback)UpdatePadsCB);
VIDEO_SetBlack (FALSE);
VIDEO_Flush ();
VIDEO_WaitVSync ();
if (vmode->viTVMode & VI_NON_INTERLACE)
VIDEO_WaitVSync ();
StartGX();
ResetVideo_Menu();
// Finally, the video is up and ready for use :)
}
/****************************************************************************
* StopGX
*
* Stops GX (when exiting)
***************************************************************************/
void StopGX()
{
GX_AbortFrame();
GX_Flush();
VIDEO_SetBlack(TRUE);
VIDEO_Flush();
}
/****************************************************************************
* Menu_Render
*
* Renders everything current sent to GX, and flushes video
***************************************************************************/
void Menu_Render()
{
GX_DrawDone ();
whichfb ^= 1; // flip framebuffer
GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate(GX_TRUE);
GX_CopyDisp(xfb[whichfb],GX_TRUE);
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, f32 zpos, 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 *=.5;
height*=.5;
guMtxIdentity (m1);
guMtxScaleApply(m1,m1,scaleX,scaleY,1.0);
Vector axis = (Vector) {0 , 0, 1 };
guMtxRotAxisDeg (m2, &axis, degrees);
// guMtxConcat(m2,m1,m);
guMtxConcat(m1,m2,m);
guMtxTransApply(m,m, xpos+width+0.5,ypos+height+0.5,zpos);
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)
{
u8 fmt;
long n;
int i;
f32 x2 = x+width;
f32 y2 = y+height;
Vector v[] = {{x,y,0.0f}, {x2,y,0.0f}, {x2,y2,0.0f}, {x,y2,0.0f}, {x,y,0.0f}};
if(!filled)
{
fmt = GX_LINESTRIP;
n = 5;
}
else
{
fmt = GX_TRIANGLEFAN;
n = 4;
}
GX_Begin(fmt, GX_VTXFMT0, n);
for(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();
}
void Menu_DrawDiskCover(f32 xpos, f32 ypos, f32 zpos, u16 width, u16 height, u16 distance,u8 data[],
f32 deg_alpha, f32 deg_beta, f32 scaleX, f32 scaleY, u8 alpha, bool shadow)
{
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);
f32 cos_beta = cos(DegToRad(deg_beta));
f32 s_offset_y = (zpos + (cos_beta * distance)) * tan(DegToRad(5));
f32 s_offset_x = (cos_beta<0?-cos_beta:cos_beta) * s_offset_y;
f32 s_offset_z = (s_offset_y<0 ? 0 : s_offset_y)*2;
Mtx m,m1,m2,m3,m4, mv;
width *=.5;
height*=.5;
guMtxIdentity (m4);
guMtxTransApply(m4,m4, 0, 0, distance);
guMtxIdentity (m1);
guMtxScaleApply(m1,m1,scaleX,scaleY,1.0);
Vector axis2 = (Vector) {0 , 1, 0 };
guMtxRotAxisDeg (m2, &axis2, deg_beta);
Vector axis = (Vector) {0 , 0, 1 };
guMtxRotAxisDeg (m3, &axis, deg_alpha);
// guMtxConcat(m2,m1,m);
guMtxConcat(m3,m4,m3); // move distance then rotate z-axis
guMtxConcat(m2,m3,m2); // rotate y-axis
guMtxConcat(m1,m2,m); // scale
if(shadow)
guMtxTransApply(m,m, xpos+width+0.5+s_offset_x,ypos+height+0.5+s_offset_y,zpos-s_offset_z);
else
guMtxTransApply(m,m, xpos+width+0.5,ypos+height+0.5,zpos);
guMtxConcat (GXmodelView2D, m, mv);
GX_LoadPosMtxImm (mv, GX_PNMTX0);
if(shadow)
{
GX_Begin(GX_QUADS, GX_VTXFMT0,4);
GX_Position3f32(-width, -height, 0);
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GX_Color4u8(0,0,0,alpha);
GX_TexCoord2f32(0, 0);
GX_Position3f32(width, -height, 0);
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GX_Color4u8(0,0,0,alpha);
GX_TexCoord2f32(1, 0);
GX_Position3f32(width, height, 0);
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GX_Color4u8(0,0,0,alpha);
GX_TexCoord2f32(1, 1);
GX_Position3f32(-width, height, 0);
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GX_Color4u8(0,0,0,alpha);
GX_TexCoord2f32(0, 1);
}
else
{
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);
}