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5899704220
vbagx/source/video.cpp
dborth 5899704220
2012-04-28 16:15:24 +00:00

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/****************************************************************************
* Visual Boy Advance GX
*
* Tantric September 2008
* softdev 2007
*
* video.cpp
*
* Video routines
***************************************************************************/
#include <gccore.h>
#include <ogcsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "vbagx.h"
#include "menu.h"
#include "input.h"
s32 CursorX, CursorY;
bool CursorVisible;
bool CursorValid;
bool TiltScreen = false;
float TiltAngle = 0;
u32 FrameTimer = 0;
/*** External 2D Video ***/
/*** 2D Video Globals ***/
GXRModeObj *vmode = NULL; // Graphics Mode Object
unsigned int *xfb[2] = { NULL, NULL }; // Framebuffers
int whichfb = 0; // Frame buffer toggle
static Mtx GXmodelView2D;
u8 * gameScreenPng = NULL;
int gameScreenPngSize = 0;
int screenheight = 480;
int screenwidth = 640;
/*** 3D GX ***/
#define DEFAULT_FIFO_SIZE ( 256 * 1024 )
static u8 gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN(32);
static unsigned int copynow = GX_FALSE;
/*** Texture memory ***/
static u8 *texturemem = NULL;
static int texturesize;
static GXTexObj texobj;
static Mtx view;
static int vwidth, vheight;
static int updateScaling;
bool progressive = false;
/* 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.
***/
static s16 square[] ATTRIBUTE_ALIGN(32) = {
/*
* X, Y, Z
* Values set are for roughly 4:3 aspect
*/
-200, 200, 0, // 0
200, 200, 0, // 1
200, -200, 0, // 2
-200, -200, 0 // 3
};
static camera cam = { {0.0F, 0.0F, 0.0F},
{0.0F, 0.5F, 0.0F},
{0.0F, 0.0F, -0.5F}
};
/****************************************************************************
* VideoThreading
***************************************************************************/
#define TSTACK 16384
static 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;
}
/****************************************************************************
* 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(void)
{
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
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565,
GX_CLAMP, GX_CLAMP, GX_FALSE);
if (!(GCSettings.render&1))
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
}
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.
if (TiltScreen)
{
guMtxRotDeg(m, 'z', -TiltAngle);
guMtxScaleApply(m, m, 0.8, 0.8, 1);
}
else
{
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();
}
#ifdef HW_RVL
static inline void draw_cursor(Mtx v)
{
if (!CursorVisible || !CursorValid)
return;
GX_InitTexObj(&texobj, pointer[0]->GetImage(), 96, 96, GX_TF_RGBA8,GX_CLAMP, GX_CLAMP,GX_FALSE);
GX_LoadTexObj(&texobj, GX_TEXMAP0);
GX_SetBlendMode(GX_BM_BLEND,GX_BL_DSTALPHA,GX_BL_INVSRCALPHA,GX_LO_CLEAR);
GX_SetTevOp (GX_TEVSTAGE0, GX_REPLACE);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
Mtx m; // model matrix.
guMtxIdentity(m);
guMtxScaleApply(m, m, 0.070f, 0.10f, 0.06f);
// I needed to hack this position
guMtxTransApply(m, m, CursorX-315, 220-CursorY, -100);
GX_LoadPosMtxImm(m, GX_PNMTX0);
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
// I needed to hack the texture coords to cut out the opaque bit around the outside
draw_vert(0, 0, 0.4, 0.45);
draw_vert(1, 0, 0.76, 0.45);
draw_vert(2, 0, 0.76, 0.97);
draw_vert(3, 0, 0.4, 0.97);
GX_End();
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_SetTexCoordGen (GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
GX_InvVtxCache (); // update vertex cache
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565,
GX_CLAMP, GX_CLAMP, GX_FALSE);
if (!(GCSettings.render&1))
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
}
#endif
/****************************************************************************
* 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;
}
// check for progressive scan
if (mode->viTVMode == VI_TVMODE_NTSC_PROG)
progressive = true;
else
progressive = false;
#ifdef HW_RVL
bool pal = false;
if (mode == &TVPal576IntDfScale)
pal = true;
if (CONF_GetAspectRatio() == CONF_ASPECT_16_9)
{
if (pal)
{
mode = &TVPal528IntDf;
mode->xfbHeight = 542;
mode->viHeight = 542;
}
else
{
mode->xfbHeight = 456;
mode->viHeight = 456;
}
mode->fbWidth = 640;
mode->efbHeight = 456;
mode->viWidth = 686;
}
else
{
mode->viWidth = 672;
}
if (pal)
{
mode->viXOrigin = (VI_MAX_WIDTH_PAL - mode->viWidth) / 2;
mode->viYOrigin = (VI_MAX_HEIGHT_PAL - mode->viHeight) / 2;
}
else
{
mode->viXOrigin = (VI_MAX_WIDTH_NTSC - mode->viWidth) / 2;
mode->viYOrigin = (VI_MAX_HEIGHT_NTSC - 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;
}
/****************************************************************************
* InitializeVideo
*
* This function MUST be called at startup.
* - also sets up menu video mode
***************************************************************************/
void
InitializeVideo ()
{
VIDEO_Init();
// Allocate the video buffers
xfb[0] = (u32 *) memalign(32, 640*574*2);
xfb[1] = (u32 *) memalign(32, 640*574*2);
DCInvalidateRange(xfb[0], 640*574*2);
DCInvalidateRange(xfb[1], 640*574*2);
xfb[0] = (u32 *) MEM_K0_TO_K1 (xfb[0]);
xfb[1] = (u32 *) MEM_K0_TO_K1 (xfb[1]);
GXRModeObj *rmode = FindVideoMode();
SetupVideoMode(rmode);
LWP_CreateThread (&vbthread, vbgetback, NULL, vbstack, TSTACK, 68);
// Initialise 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);
GX_CopyDisp (xfb[whichfb], GX_TRUE); // reset xfb
GX_Flush();
}
static inline void UpdateScaling()
{
int xscale;
int yscale;
float TvAspectRatio;
float GameboyAspectRatio;
float MaxStretchRatio = 1.6f;
if (GCSettings.scaling == 1)
MaxStretchRatio = 1.3f;
else if (GCSettings.scaling == 2)
MaxStretchRatio = 1.6f;
else
MaxStretchRatio = 1.0f;
#ifdef HW_RVL
if (CONF_GetAspectRatio() == CONF_ASPECT_16_9)
TvAspectRatio = 16.0f/9.0f;
else
TvAspectRatio = 4.0f/3.0f;
#else
if (GCSettings.scaling == 3)
TvAspectRatio = 16.0f/9.0f;
else
TvAspectRatio = 4.0f/3.0f;
#endif
if (vwidth == 240) // GBA
GameboyAspectRatio = 240.0f/160.0f; // assumes square pixels on GB Advance
else // GB or GBC
GameboyAspectRatio = 160.0f/144.0f; // assumes square pixels on GB Colour
if (TvAspectRatio>GameboyAspectRatio)
{
yscale = 240; // half of TV resolution 640x480
float StretchRatio = TvAspectRatio/GameboyAspectRatio;
if (StretchRatio > MaxStretchRatio)
StretchRatio = MaxStretchRatio;
xscale = 240.0f*GameboyAspectRatio*StretchRatio * ((4.0f/3.0f)/TvAspectRatio);
}
else
{
xscale = 320; // half of TV resolution 640x480
float StretchRatio = GameboyAspectRatio/TvAspectRatio;
if (StretchRatio > MaxStretchRatio)
StretchRatio = MaxStretchRatio;
yscale = 320.0f/GameboyAspectRatio*StretchRatio / ((4.0f/3.0f)/TvAspectRatio);
}
// change zoom
if (vwidth == 240) // GBA
{
xscale *= GCSettings.gbaZoomHor;
yscale *= GCSettings.gbaZoomVert;
}
else
{
xscale *= GCSettings.gbZoomHor;
yscale *= GCSettings.gbZoomVert;
}
// Set new aspect
square[0] = square[9] = -xscale + GCSettings.xshift;
square[3] = square[6] = xscale + GCSettings.xshift;
square[1] = square[4] = yscale - GCSettings.yshift;
square[7] = square[10] = -yscale - GCSettings.yshift;
DCFlushRange (square, 32); // update memory BEFORE the GPU accesses it!
draw_init ();
memset(&view, 0, sizeof(Mtx));
guLookAt(view, &cam.pos, &cam.up, &cam.view);
GX_SetViewport(0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
updateScaling = 0;
}
/****************************************************************************
* ResetVideo_Emu
*
* Reset the video/rendering mode for the emulator rendering
****************************************************************************/
void
ResetVideo_Emu ()
{
Mtx44 p;
GXRModeObj * rmode = FindVideoMode();
SetupVideoMode(rmode); // reconfigure VI
// reconfigure GX
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); // deflickering filter only for filtered mode
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_SetCullMode (GX_CULL_NONE);
GX_SetDispCopyGamma (GX_GM_1_0);
GX_SetBlendMode(GX_BM_BLEND,GX_BL_DSTALPHA,GX_BL_INVSRCALPHA,GX_LO_CLEAR);
guOrtho(p, 480/2, -(480/2), -(640/2), 640/2, 100, 1000); // matrix, t, b, l, r, n, f
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
// reinitialize texture
GX_InvalidateTexAll ();
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&1))
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_Flush();
draw_init();
// set aspect ratio
updateScaling = 1;
}
void GX_Render_Init(int width, int height)
{
if (texturemem)
free(texturemem);
/*** Allocate 32byte aligned texture memory ***/
texturesize = (width * height) * 2;
texturemem = (u8 *) memalign(32, texturesize);
memset(texturemem, 0, texturesize);
/*** Setup for first call to scaler ***/
vwidth = width;
vheight = height;
}
/****************************************************************************
* GX_Render
*
* Pass in a buffer, width and height to update as a tiled RGB565 texture
****************************************************************************/
void GX_Render(int width, int height, u8 * buffer, int pitch)
{
int h, w;
long long int *dst = (long long int *) texturemem;
long long int *src1 = (long long int *) buffer;
long long int *src2 = (long long int *) (buffer + pitch);
long long int *src3 = (long long int *) (buffer + (pitch << 1));
long long int *src4 = (long long int *) (buffer + (pitch * 3));
int rowpitch = (pitch >> 3) * 3;
int rowadjust = ( pitch % 8 ) << 2;
vwidth = width;
vheight = height;
int vwid2 = (vwidth >> 2);
char *ra = NULL;
// Ensure previous vb has complete
while ((LWP_ThreadIsSuspended (vbthread) == 0) || (copynow == GX_TRUE))
usleep (50);
whichfb ^= 1;
if(updateScaling)
UpdateScaling();
// clear texture objects
GX_InvVtxCache();
GX_InvalidateTexAll();
GX_SetTevOp(GX_TEVSTAGE0, GX_DECAL);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
for (h = 0; h < vheight; h += 4)
{
for (w = 0; w < vwid2; ++w)
{
*dst++ = *src1++;
*dst++ = *src2++;
*dst++ = *src3++;
*dst++ = *src4++;
}
src1 += rowpitch;
src2 += rowpitch;
src3 += rowpitch;
src4 += rowpitch;
if ( rowadjust )
{
ra = (char *)src1;
src1 = (long long int *)(ra + rowadjust);
ra = (char *)src2;
src2 = (long long int *)(ra + rowadjust);
ra = (char *)src3;
src3 = (long long int *)(ra + rowadjust);
ra = (char *)src4;
src4 = (long long int *)(ra + rowadjust);
}
}
// load texture into GX
DCFlushRange(texturemem, texturesize);
GX_SetNumChans(1);
GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate(GX_TRUE);
GX_LoadTexObj(&texobj, GX_TEXMAP0);
draw_square(view); // render textured quad
#ifdef HW_RVL
draw_cursor(view); // render cursor
#endif
GX_DrawDone();
if(ScreenshotRequested)
{
ScreenshotRequested = 0;
TakeScreenshot();
ConfigRequested = 1;
}
// EFB is ready to be copied into XFB
VIDEO_SetNextFramebuffer(xfb[whichfb]);
VIDEO_Flush();
copynow = GX_TRUE;
// Return to caller, don't waste time waiting for vb
LWP_ResumeThread (vbthread);
}
/****************************************************************************
* 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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