家用機 - Sony Play Station - C/C++ (PsyQ) - Use Gouraud Shading

參考資訊：
https://psx.arthus.net/starting.html
https://github.com/ABelliqueux/nolibgs_hello_worlds#installation
https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/(Archived)--Embedding-binary-data-in-your-psx-executable

main.c

#include <sys/types.h>
#include <stdio.h>
#include <libgte.h>
#include <libetc.h>
#include <libgpu.h>
 
extern unsigned long _binary_ps1_tim_start[];
extern unsigned long _binary_ps1_tim_end[];
extern unsigned long _binary_ps1_tim_length;
  
int main(int argc, char *argv[])
{
    const int w = 320;
    const int h = 240;
    DISPENV disp = { 0 };
    DRAWENV draw = { 0 };
 
    u_long ot = 0;
    SPRT *sprt = 0;
    DR_TPAGE *tpage = 0;
    TIM_IMAGE tim = { 0 };

    long flag = 0;
    long depth = 0;
    POLY_GT4 *poly = 0;
    char buf[32768] = { 0 };
    MATRIX PolyMatrix = { 0 };
    VECTOR MovVector = { 0 };
    VECTOR ScaleVector = { 0 };
    SVECTOR RotVector = { 0 };
    SVECTOR VertPos[4] = {
        { -32, -32, 1 },
        { -32,  32, 1 },
        {  32, -32, 1 },
        {  32,  32, 1 }
    };
  
    ResetGraph(0);
    InitGeom();
    SetGeomOffset(w / 2, h / 2);
  
    SetDefDispEnv(&disp, 0, 0, w, h);
    SetDefDrawEnv(&draw, 0, 0, w, h);
    SetDispMask(1);
    setRGB0(&draw, 0, 0, 0);
    draw.isbg = 1;
  
    PutDispEnv(&disp);
    PutDrawEnv(&draw);
  
    OpenTIM(_binary_ps1_tim_start);
    ReadTIM(&tim);
    LoadImage(tim.prect, tim.paddr);
    DrawSync(0);
    if (tim.mode & 8){
        LoadImage(tim.crect, tim.caddr);
        DrawSync(0);
    }
 
    while (1) {
        poly = (POLY_GT4 *)buf;

        ScaleVector.vx = ONE;
        ScaleVector.vy = ONE;
        ScaleVector.vz = ONE;

        RotVector.vx = 0;
        RotVector.vy = 0;
        RotVector.vz = 180;

        MovVector.vx = 0;
        MovVector.vy = 0;
        MovVector.vz = 0;

        RotMatrix(&RotVector, &PolyMatrix);
        TransMatrix(&PolyMatrix, &MovVector);
        ScaleMatrix(&PolyMatrix, &ScaleVector);
        SetRotMatrix(&PolyMatrix);
        SetTransMatrix(&PolyMatrix);

        setPolyGT4(poly);
        poly->tpage = getTPage(tim.mode & 3, 0, tim.prect->x, tim.prect->y);
        setRGB0(poly, 128, 128, 128);
        setRGB1(poly, 255, 0, 0);
        setRGB2(poly, 0, 255, 0);
        setRGB3(poly, 0, 0, 255);

        RotTransPers(&VertPos[0], (long *)&poly->x0, &depth, &flag);
        RotTransPers(&VertPos[1], (long *)&poly->x1, &depth, &flag);
        RotTransPers(&VertPos[2], (long *)&poly->x2, &depth, &flag);
        RotTransPers(&VertPos[3], (long *)&poly->x3, &depth, &flag);

        setUV4(poly, 0, 0, 0, 200, 200, 0, 200, 200);
        addPrim(&ot, buf);

        DrawSync(0);
        VSync(0);
        PutDispEnv(&disp);
        PutDrawEnv(&draw);
        DrawOTag(&ot);
    }
  
    return 0;
}

P.S. img2tim會將PNG路徑轉成變數名稱：_binary + 路徑 + 檔名 + _start，路徑如果包含/、.，則會被轉成_

ps1.png


編譯、執行

$ img2tim ps1.png -o ps1.tim
$ mipsel-linux-gnu-objcopy -I binary -O elf32-tradlittlemips -B mips ps1.tim ps1.o
$ strings ps1.o | tail | grep _binary
    _binary_ps1_tim_start
    _binary_ps1_tim_end
    _binary_ps1_tim_size

$ mipsel-linux-gnu-gcc -I/opt/nugget/psyq/include -I/opt/psyq/include -march=mips1 -mabi=32 -EL -fno-builtin -fno-pic -mno-shared -mno-abicalls -mfp32 -nostdlib main.c -c -o main.o
$ mipsel-linux-gnu-gcc -I/opt/nugget/psyq/include -I/opt/psyq/include -march=mips1 -mabi=32 -EL -fno-builtin -fno-pic -mno-shared -mno-abicalls -mfp32 -nostdlib main.o ps1.o -o main.elf /opt/nugget/common/crt0/crt0.o /opt/nugget/common/syscalls/printf.o -static -L/opt/psyq/lib -Wl,--start-group -lapi -lc -lc2 -lcard -lcomb -lds -letc -lgpu -lgs -lgte -lgun -lhmd -lmath -lmcrd -lmcx -lpad -lpress -lsio -lsnd -lspu -ltap -lcd -Wl,--end-group -Wl,--oformat=elf32-tradlittlemips -Tpsexe.ld

$ /opt/ps1/pcsx main.exe