233 lines
7.9 KiB
C
233 lines
7.9 KiB
C
#include <sys/types.h>
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#include <stdio.h>
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#include <libgte.h>
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#include <libetc.h>
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#include <libgpu.h>
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#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
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#define SCREENXRES 320
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#define SCREENYRES 240
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#define CENTERX SCREENXRES/2
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#define CENTERY SCREENYRES/2
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#define MARGINX 32 // margins for text display
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#define MARGINY 44
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#define FONTSIZE 8 * 3 // Text Field Height
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#define OTLEN 8 // Ordering Table Length
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DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
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DRAWENV draw[2];
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u_long ot[2][OTLEN]; // double ordering table of length 8 * 32 = 256 bits / 32 bytes
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char primbuff[2][32768] = {1}; // double primitive buffer of length 32768 * 8 = 262.144 bits / 32,768 Kbytes
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char *nextpri = primbuff[0]; // pointer to the next primitive in primbuff. Initially, points to the first bit of primbuff[0]
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short db = 0; // index of which buffer is used, values 0, 1
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// Embed TIM files
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// See https://github.com/ABelliqueux/nolibgs_hello_worlds#embedding-binary-data-in-a-ps-exe
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// 16bpp TIM
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extern unsigned long _binary_TIM_TIM16_tim_start[];
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extern unsigned long _binary_TIM_TIM16_tim_end[];
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extern unsigned long _binary_TIM_TIM16_tim_length;
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// 8bpp TIM
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extern unsigned long _binary_TIM_TIM8_tim_start[];
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extern unsigned long _binary_TIM_TIM8_tim_end[];
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extern unsigned long _binary_TIM_TIM8_TIM_length;
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// 4bpp TIM
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extern unsigned long _binary_TIM_TIM4_tim_start[];
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extern unsigned long _binary_TIM_TIM4_tim_end[];
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extern unsigned long _binary_TIM_TIM4_tim_length;
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TIM_IMAGE TIM_16;
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TIM_IMAGE TIM_8;
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TIM_IMAGE TIM_4;
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void LoadTexture(u_long * tim, TIM_IMAGE * tparam){ // This part is from Lameguy64's tutorial series : lameguy64.net/svn/pstutorials/chapter1/3-textures.html login/pw: annoyingmous
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OpenTIM(tim); // Open the tim binary data, feed it the address of the data in memory
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ReadTIM(tparam); // This read the header of the TIM data and sets the corresponding members of the TIM_IMAGE structure
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LoadImage(tparam->prect, tparam->paddr); // Transfer the data from memory to VRAM at position prect.x, prect.y
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DrawSync(0); // Wait for the drawing to end
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if (tparam->mode & 0x8){ // check 4th bit // If 4th bit == 1, TIM has a CLUT
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LoadImage(tparam->crect, tparam->caddr); // Load it to VRAM at position crect.x, crect.y
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DrawSync(0); // Wait for drawing to end
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}
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}
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void init(void)
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{
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ResetGraph(0);
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SetDefDispEnv(&disp[0], 0, 0, SCREENXRES, SCREENYRES);
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SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
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if (VMODE)
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{
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SetVideoMode(MODE_PAL);
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disp[0].screen.y += 8;
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disp[1].screen.y += 8;
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}
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setRGB0(&draw[0], 50, 50, 50);
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setRGB0(&draw[1], 50, 50, 50);
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draw[0].isbg = 1;
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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FntLoad(960, 0);
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FntOpen(MARGINX, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 );
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}
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void display(void)
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{
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DrawSync(0);
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VSync(0);
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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SetDispMask(1);
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DrawOTag(ot[db] + OTLEN - 1);
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db = !db;
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nextpri = primbuff[db];
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}
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int main(void)
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{
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SPRT * sprt_16b; // Define 3 pointers to SPRT struct
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SPRT * sprt_8b;
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SPRT * sprt_4b;
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DR_TPAGE * tpage_16b; // Define 3 pointers to DR_TPAGE struct. We need three because our images are on three
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DR_TPAGE * tpage_8b; // different texture pages.
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DR_TPAGE * tpage_4b;
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init();
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LoadTexture(_binary_TIM_TIM16_tim_start, &TIM_16); // Load everything to vram
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LoadTexture(_binary_TIM_TIM8_tim_start, &TIM_8);
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LoadTexture(_binary_TIM_TIM4_tim_start, &TIM_4);
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while (1)
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{
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ClearOTagR(ot[db], OTLEN);
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// Loading a 16 bit TIM
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sprt_16b = (SPRT *)nextpri; // Cast whats at nexpri as a SPRT named sprt_16b
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setSprt(sprt_16b); // Initialize the SPRT struct
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setRGB0(sprt_16b, 128, 128, 128); // Set RGB color. 128,128,128 is neutral. You can color the image by adjusting these values
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setXY0(sprt_16b, 28, MARGINY); // Set sprite position
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setWH(sprt_16b, 64, 128 ); // Set sprite width and height
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addPrim(ot[db], sprt_16b); // add the sprite primitive to the ordering table
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nextpri += sizeof(SPRT); // increment nextpri so that it points just after sprt_16b in the primitive buffer
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// Set Texture page for the 16bit tim : 768, 0 - No CLUT
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// Note : You need to use setDrawTPage each time you want to use a texture that's on a different texture page
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tpage_16b = (DR_TPAGE*)nextpri;
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setDrawTPage(tpage_16b, 0, 1, // Set the Texture Page the texture we want resides on.
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getTPage(TIM_16.mode&0x3, 0, // Here we are using bitmasking to deduce the picture mode : &0x3
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TIM_16.prect->x, TIM_16.prect->y)); // In binary, 3 is 11, so we only keep the first two bits
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// Values can be 00 (0), 01 (1), 10(2), respectively, 4bpp, 8bpp, 15bpp, 24bpp. See Fileformat47.pdf, p.180
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// Similarly, we could use bitmasking to deduce if there is a CLUT by bitmasking the 4th bit : if(TIM_IMAGE.mode & 0x8) LoadImage... :
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addPrim(ot[db], tpage_16b); // add the sprite primitive to the ordering table
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nextpri += sizeof(DR_TPAGE); // Advance next primitive address
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// Loading a 8 bit TIM
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sprt_8b = (SPRT *)nextpri;
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setSprt(sprt_8b);
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setRGB0(sprt_8b, 128, 128, 128);
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setXY0(sprt_8b, sprt_16b->x0 + sprt_16b->w + 32, MARGINY);
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setWH(sprt_8b, 64, 128 );
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setClut(sprt_8b, TIM_8.crect->x, TIM_8.crect->y); // Only difference here is we set the CLUT to the position of the VRAM we loaded the palette earlier (see LoadTexture())
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addPrim(ot[db], sprt_8b);
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nextpri += sizeof(SPRT);
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// Set Texture page for the 8bit tim : 512, 256 - CLUT is at 0, 480
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tpage_8b = (DR_TPAGE*)nextpri;
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setDrawTPage(tpage_8b, 0, 1,
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getTPage(TIM_8.mode&0x3, 0,
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TIM_8.prect->x, TIM_8.prect->y));
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addPrim(ot[db], tpage_8b);
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nextpri += sizeof(DR_TPAGE);
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// Loading a 4 bit TIM
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sprt_4b = (SPRT *)nextpri;
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setSprt(sprt_4b);
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setRGB0(sprt_4b, 128, 128, 128);
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setXY0(sprt_4b, sprt_8b->x0 + sprt_8b->w + 32, MARGINY);
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setWH(sprt_4b, 64, 128 );
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setClut(sprt_4b, TIM_4.crect->x, TIM_4.crect->y);
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addPrim(ot[db], sprt_4b);
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nextpri += sizeof(SPRT);
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// Set Texture page for the 4bit tim : 512, 256 - CLUT is at 0, 480
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tpage_4b = (DR_TPAGE*)nextpri;
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setDrawTPage(tpage_4b, 0, 1,
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getTPage(TIM_4.mode&0x3, 0,
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TIM_4.prect->x, TIM_4.prect->y));
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addPrim(ot[db], tpage_4b);
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nextpri += sizeof(DR_TPAGE);
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FntPrint("16 Bit! ");
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FntPrint("8 Bit! ");
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FntPrint("4 Bit!\n\n");
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FntPrint("Check VRAM in emu to see the dif");
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FntFlush(-1);
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display();
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}
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return 0;
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}
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