PS2 PLASMA THEME - GIF

ILUZIone

ILUZIone

Forum Noob
Does anyone have, or know where to find, the plasma effect that appears on the screen when you choose not to use a background or solid color... I looked in the project files on GitHub, but I couldn't find it.
Thanks in advance.

background_mode = 1

bbb2a500-ca21-11ea-9e6d-8b11db4ff655
 
Its a render from the source.
Its not a gif or single file that can be extracted, but lines of code that are executing the design.
 
Ripto said:
Its a render from the source.
Its not a gif or single file that can be extracted, but lines of code that are executing the design.
Click to expand...

Would there be a way to emulate this situation, or would doing it in dedicated applications be the easiest way?
 
I'm not really sure as I'm not a developer, but I believe there's several ways you could go about retrieving it.
If you can get all elements off the screen with a custom theme, then you could screen record and gif that
Otherwise you'll need to sift through the OPL source:

Code: 
typedef struct
{
    void (*handleInput)(void);
    void (*renderScreen)(void);
    short inMenu;
} gui_screen_handler_t;

static gui_screen_handler_t screenHandlers[] = {{&menuHandleInputMain, &menuRenderMain, 0},
                                                {&menuHandleInputMenu, &menuRenderMenu, 1},
                                                {&menuHandleInputInfo, &menuRenderInfo, 1},
                                                {&menuHandleInputGameMenu, &menuRenderGameMenu, 1},
                                                {&menuHandleInputAppMenu, &menuRenderAppMenu, 1}};

// default screen handler (menu screen)
static gui_screen_handler_t *screenHandler = &screenHandlers[GUI_SCREEN_MENU];

// screen transition handling
static gui_screen_handler_t *screenHandlerTarget = NULL;
static int transIndex;

// Helper perlin noise data
#define PLASMA_H              32
#define PLASMA_W              32
#define PLASMA_ROWS_PER_FRAME 6
#define FADE_SIZE             256

static GSTEXTURE gBackgroundTex;
static int pperm[512];
static float fadetbl[FADE_SIZE + 1];

static VU_VECTOR pgrad3[12] = {{1, 1, 0, 1}, {-1, 1, 0, 1}, {1, -1, 0, 1}, {-1, -1, 0, 1}, {1, 0, 1, 1}, {-1, 0, 1, 1}, {1, 0, -1, 1}, {-1, 0, -1, 1}, {0, 1, 1, 1}, {0, -1, 1, 1}, {0, 1, -1, 1}, {0, -1, -1, 1}};

void guiReloadScreenExtents()
{
    rmGetScreenExtents(&screenWidth, &screenHeight);
}

void guiInit(void)
{
    guiFrameId = 0;
    guiInactiveFrames = 0;

    gFrameHook = NULL;
    gTerminate = 0;
    gInitComplete = 0;
    gScheduledOps = 0;
    gCompletedOps = 0;

    gUpdateList = NULL;
    gUpdateEnd = NULL;

    gQueueSema.init_count = 1;
    gQueueSema.max_count = 1;
    gQueueSema.option = 0;

    gSemaId = CreateSema(&gQueueSema);
    gGUILockSemaId = CreateSema(&gQueueSema);

    guiReloadScreenExtents();

    // background texture - for perlin
    gBackgroundTex.Width = PLASMA_W;
    gBackgroundTex.Height = PLASMA_H;
    gBackgroundTex.Mem = memalign(128, PLASMA_W * PLASMA_H * 4);
    gBackgroundTex.PSM = GS_PSM_CT32;
    gBackgroundTex.Filter = GS_FILTER_LINEAR;
    gBackgroundTex.Vram = 0;
    gBackgroundTex.VramClut = 0;
    gBackgroundTex.Clut = NULL;
    gBackgroundTex.ClutStorageMode = GS_CLUT_STORAGE_CSM1;

    // Precalculate the values for the perlin noise plasma
    int i;
    for (i = 0; i < 256; ++i) {
        pperm[i] = rand() % 256;
        pperm[i + 256] = pperm[i];
    }

    for (i = 0; i <= FADE_SIZE; ++i) {
        float t = (float)(i) / FADE_SIZE;

        fadetbl[i] = t * t * t * (t * (t * 6.0f - 15.0f) + 10.0f);
    }
}

void guiEnd()
{
    if (gBackgroundTex.Mem)
        free(gBackgroundTex.Mem);

    DeleteSema(gSemaId);
    DeleteSema(gGUILockSemaId);
}
void guiDrawBGPlasma()
{
    int x, y;
    // transition the colors
    curbgColor[0] += cdirection(curbgColor[0], gTheme->bgColor[0]);
    curbgColor[1] += cdirection(curbgColor[1], gTheme->bgColor[1]);
    curbgColor[2] += cdirection(curbgColor[2], gTheme->bgColor[2]);
    // it's PLASMA_ROWS_PER_FRAME rows a frame to stop being a resource hog
    if (pery >= PLASMA_H) {
        pery = 0;
        perz += dir;
        if (perz > 100.0f || perz < -100.0f)
            dir = -dir;
    }
    u32 *buf = gBackgroundTex.Mem + PLASMA_W * pery;
    int ymax = pery + PLASMA_ROWS_PER_FRAME;
    if (ymax > PLASMA_H)
        ymax = PLASMA_H;
    for (y = pery; y < ymax; y++) {
        for (x = 0; x < PLASMA_W; x++) {
            u32 fper = guiCalcPerlin((float)(2 * x) / PLASMA_W, (float)(2 * y) / PLASMA_H, perz) * 0x80 + 0x80;
            *buf = GS_SETREG_RGBA(
                (u32)(fper * curbgColor[0]) >> 8,
                (u32)(fper * curbgColor[1]) >> 8,
                (u32)(fper * curbgColor[2]) >> 8,
                0x80);
            ++buf;
        }
    }
    pery = ymax;
    rmInvalidateTexture(&gBackgroundTex);
    rmDrawPixmap(&gBackgroundTex, 0, 0, ALIGN_NONE, screenWidth, screenHeight, SCALING_NONE, gDefaultCol);
}
}

EDIT:

Here, I have attatched a theme that removes everything from the screen. You can then record it and turn it into a gif.
 

Attachments

Last edited:
Ripto said:
I'm not really sure as I'm not a developer, but I believe there's several ways you could go about retrieving it.
If you can get all elements off the screen with a custom theme, then you could screen record and gif that
Otherwise you'll need to sift through the OPL source:

Code: 
typedef struct
{
    void (*handleInput)(void);
    void (*renderScreen)(void);
    short inMenu;
} gui_screen_handler_t;

static gui_screen_handler_t screenHandlers[] = {{&menuHandleInputMain, &menuRenderMain, 0},
                                                {&menuHandleInputMenu, &menuRenderMenu, 1},
                                                {&menuHandleInputInfo, &menuRenderInfo, 1},
                                                {&menuHandleInputGameMenu, &menuRenderGameMenu, 1},
                                                {&menuHandleInputAppMenu, &menuRenderAppMenu, 1}};

// default screen handler (menu screen)
static gui_screen_handler_t *screenHandler = &screenHandlers[GUI_SCREEN_MENU];

// screen transition handling
static gui_screen_handler_t *screenHandlerTarget = NULL;
static int transIndex;

// Helper perlin noise data
#define PLASMA_H              32
#define PLASMA_W              32
#define PLASMA_ROWS_PER_FRAME 6
#define FADE_SIZE             256

static GSTEXTURE gBackgroundTex;
static int pperm[512];
static float fadetbl[FADE_SIZE + 1];

static VU_VECTOR pgrad3[12] = {{1, 1, 0, 1}, {-1, 1, 0, 1}, {1, -1, 0, 1}, {-1, -1, 0, 1}, {1, 0, 1, 1}, {-1, 0, 1, 1}, {1, 0, -1, 1}, {-1, 0, -1, 1}, {0, 1, 1, 1}, {0, -1, 1, 1}, {0, 1, -1, 1}, {0, -1, -1, 1}};

void guiReloadScreenExtents()
{
    rmGetScreenExtents(&screenWidth, &screenHeight);
}

void guiInit(void)
{
    guiFrameId = 0;
    guiInactiveFrames = 0;

    gFrameHook = NULL;
    gTerminate = 0;
    gInitComplete = 0;
    gScheduledOps = 0;
    gCompletedOps = 0;

    gUpdateList = NULL;
    gUpdateEnd = NULL;

    gQueueSema.init_count = 1;
    gQueueSema.max_count = 1;
    gQueueSema.option = 0;

    gSemaId = CreateSema(&gQueueSema);
    gGUILockSemaId = CreateSema(&gQueueSema);

    guiReloadScreenExtents();

    // background texture - for perlin
    gBackgroundTex.Width = PLASMA_W;
    gBackgroundTex.Height = PLASMA_H;
    gBackgroundTex.Mem = memalign(128, PLASMA_W * PLASMA_H * 4);
    gBackgroundTex.PSM = GS_PSM_CT32;
    gBackgroundTex.Filter = GS_FILTER_LINEAR;
    gBackgroundTex.Vram = 0;
    gBackgroundTex.VramClut = 0;
    gBackgroundTex.Clut = NULL;
    gBackgroundTex.ClutStorageMode = GS_CLUT_STORAGE_CSM1;

    // Precalculate the values for the perlin noise plasma
    int i;
    for (i = 0; i < 256; ++i) {
        pperm[i] = rand() % 256;
        pperm[i + 256] = pperm[i];
    }

    for (i = 0; i <= FADE_SIZE; ++i) {
        float t = (float)(i) / FADE_SIZE;

        fadetbl[i] = t * t * t * (t * (t * 6.0f - 15.0f) + 10.0f);
    }
}

void guiEnd()
{
    if (gBackgroundTex.Mem)
        free(gBackgroundTex.Mem);

    DeleteSema(gSemaId);
    DeleteSema(gGUILockSemaId);
}
void guiDrawBGPlasma()
{
    int x, y;
    // transition the colors
    curbgColor[0] += cdirection(curbgColor[0], gTheme->bgColor[0]);
    curbgColor[1] += cdirection(curbgColor[1], gTheme->bgColor[1]);
    curbgColor[2] += cdirection(curbgColor[2], gTheme->bgColor[2]);
    // it's PLASMA_ROWS_PER_FRAME rows a frame to stop being a resource hog
    if (pery >= PLASMA_H) {
        pery = 0;
        perz += dir;
        if (perz > 100.0f || perz < -100.0f)
            dir = -dir;
    }
    u32 *buf = gBackgroundTex.Mem + PLASMA_W * pery;
    int ymax = pery + PLASMA_ROWS_PER_FRAME;
    if (ymax > PLASMA_H)
        ymax = PLASMA_H;
    for (y = pery; y < ymax; y++) {
        for (x = 0; x < PLASMA_W; x++) {
            u32 fper = guiCalcPerlin((float)(2 * x) / PLASMA_W, (float)(2 * y) / PLASMA_H, perz) * 0x80 + 0x80;
            *buf = GS_SETREG_RGBA(
                (u32)(fper * curbgColor[0]) >> 8,
                (u32)(fper * curbgColor[1]) >> 8,
                (u32)(fper * curbgColor[2]) >> 8,
                0x80);
            ++buf;
        }
    }
    pery = ymax;
    rmInvalidateTexture(&gBackgroundTex);
    rmDrawPixmap(&gBackgroundTex, 0, 0, ALIGN_NONE, screenWidth, screenHeight, SCALING_NONE, gDefaultCol);
}
}

EDIT:

Here, I have attatched a theme that removes everything from the screen. You can then record it and turn it into a gif.
Click to expand...

hey you bricked my ps2 !! malaka
 
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