Can anyone provide a working example of using GPU_SetAlphaBlending (or something similar) to modify the sf2d render code? No matter what I try I can't seem to get much to work. I eventually just gave up and ported the original code from minicraft, and the results were poor.
Just having 4 lantern entities on the ground is enough to drop the frame-rate below 60. Modifying each pixel individually is not going to work. Does anyone have a better solution, preferably something GPU related?
Here is the original code for reference.
Just having 4 lantern entities on the ground is enough to drop the frame-rate below 60. Modifying each pixel individually is not going to work. Does anyone have a better solution, preferably something GPU related?
Here is the original code for reference.
Code:
/* Software-render code, it is bad for the framerate. */
void renderLight(int x, int y, int r){
x-=offsetX;
y-=offsetY;
int x0 = x - r;
int x1 = x + r;
int y0 = y - r;
int y1 = y + r;
int xx, yy;
for (yy = y0; yy < y1; yy++) {
int yd = yy - y;
yd = yd * yd;
for (xx = x0; xx < x1; xx++) {
int xd = xx - x;
int dist = xd * xd + yd;
if (dist <= r * r) sf2d_set_pixel(lightScreen, xx, yy, 0); // set transparent pixel
}
}
}
Code:
shader.vsh
sf2d.c
arm-none-eabi-gcc -MMD -MP -MF /c/Users/Nutzer/Documents/libsf2d/build/sf2d.d -g -Wall -O2 -march=armv6k -mtune=mpcore -mfloat-abi=hard -I/c/Users/Nutzer/Documents/libsf2d/include -I/c/devkitPro/libctru/include -I/c/Users/Nutzer/Documents/libsf2d/build -DARM11 -D_3DS -c /c/Users/Nutzer/Documents/libsf2d/source/sf2d.c -o sf2d.o
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:36:8: error: unknown type name 'aptHookCookie'
static aptHookCookie apt_hook_cookie;
^
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c: In function 'sf2d_init_advanced':
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:79:2: warning: implicit declaration of function 'aptHook' [-Wimplicit-function-declaration]
aptHook(&apt_hook_cookie, apt_hook_func, NULL);
^
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c: In function 'sf2d_fini':
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:104:2: warning: implicit declaration of function 'aptUnhook' [-Wimplicit-function-declaration]
aptUnhook(&apt_hook_cookie);
^
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c: In function 'sf2d_start_frame':
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:154:19: error: 'GPU_STENCIL_KEEP' undeclared (first use in this function)
GPU_SetStencilOp(GPU_STENCIL_KEEP, GPU_STENCIL_KEEP, GPU_STENCIL_KEEP);
^
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:154:19: note: each undeclared identifier is reported only once for each function it appears in
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c: In function 'apt_hook_func':
c:/Users/Nutzer/Documents/libsf2d/source/sf2d.c:284:14: error: 'APTHOOK_ONRESTORE' undeclared (first use in this function)
if (hook == APTHOOK_ONRESTORE) {
^
make[1]: *** [sf2d.o] Error 1
make: *** [build] Error 2...could you tell me what I'm doing wrong?
I would like to request a screenshot function feature for a future update, so people don't have to use a phone to take screenshots of their game.
I actually wrote my own quick hacky version of it into sf2d_end_frame. It creates a PPM image that I then convert to a png file later on. (I highly don't recommend anyone to use this code, as it was made quick and dirty)
Here is the result from the code and some very minor editing:
I chose PPM because it was the simplest image format to make, however most programs like Paint.net don't seem to support it. So I had to use a converter website to make the image a PNG file. Preferably making a .png, .jpg, or even a .bmp would be better. I'm not sure how complicated that would make things.
What do you think?
I actually wrote my own quick hacky version of it into sf2d_end_frame. It creates a PPM image that I then convert to a png file later on. (I highly don't recommend anyone to use this code, as it was made quick and dirty)
Code:
void sf2d_end_frame(bool shouldTakeScreenShot)
{
GPU_FinishDrawing();
GPUCMD_Finalize();
GPUCMD_FlushAndRun(NULL);
gspWaitForP3D();
//Copy the GPU rendered FB to the screen FB
if (cur_screen == GFX_TOP) {
GX_SetDisplayTransfer(NULL, gpu_fb_addr, GX_BUFFER_DIM(240, 400),
(u32 *)gfxGetFramebuffer(GFX_TOP, cur_side, NULL, NULL),
GX_BUFFER_DIM(240, 400), 0x1000);
if(shouldTakeScreenShot){
const int dimx = 240, dimy = 400;
FILE *fp = fopen("top.ppm", "wb"); /* b - binary mode */
fprintf(fp, "P6\n%d %d\n255\n", dimx, dimy);
u8 * buf = gfxGetFramebuffer(GFX_TOP, cur_side, NULL, NULL);
int i;
/* Switch from BGR to RGB */
for(i=0; i < 240*400; i++){
u8 buf1 = buf[i*3+0];
buf[i*3+0] = buf[i*3+2];
buf[i*3+2] = buf1;
}
fwrite(buf, 240*400*3,1, fp);
fclose(fp);
}
} else {
GX_SetDisplayTransfer(NULL, gpu_fb_addr, GX_BUFFER_DIM(240, 320),
(u32 *)gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL),
GX_BUFFER_DIM(240, 320), 0x1000);
if(shouldTakeScreenShot){
const int dimx = 240, dimy = 320;
FILE *fp = fopen("bottom.ppm", "wb"); /* b - binary mode */
fprintf(fp, "P6\n%d %d\n255\n", dimx, dimy);
u8 * buf = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
int i;
/* Switch from BGR to RGB */
for(i=0; i < 240*320; i++){
u8 buf1 = buf[i*3+0];
buf[i*3+0] = buf[i*3+2];
buf[i*3+2] = buf1;
}
fwrite(buf, 240*320*3,1, fp);
fclose(fp);
}
}
gspWaitForPPF();
//Clear the screen
GX_SetMemoryFill(NULL, gpu_fb_addr, clear_color, &gpu_fb_addr[0x2EE00],
0x201, gpu_depth_fb_addr, 0x00000000, &gpu_depth_fb_addr[0x2EE00], 0x201);
gspWaitForPSC0();
}Here is the result from the code and some very minor editing:
I chose PPM because it was the simplest image format to make, however most programs like Paint.net don't seem to support it. So I had to use a converter website to make the image a PNG file. Preferably making a .png, .jpg, or even a .bmp would be better. I'm not sure how complicated that would make things.
What do you think?
I would like to request a screenshot function feature for a future update, so people don't have to use a phone to take screenshots of their game.
I actually wrote my own quick hacky version of it into sf2d_end_frame. It creates a PPM image that I then convert to a png file later on. (I highly don't recommend anyone to use this code, as it was made quick and dirty)
Code:void sf2d_end_frame(bool shouldTakeScreenShot) { GPU_FinishDrawing(); GPUCMD_Finalize(); GPUCMD_FlushAndRun(NULL); gspWaitForP3D(); //Copy the GPU rendered FB to the screen FB if (cur_screen == GFX_TOP) { GX_SetDisplayTransfer(NULL, gpu_fb_addr, GX_BUFFER_DIM(240, 400), (u32 *)gfxGetFramebuffer(GFX_TOP, cur_side, NULL, NULL), GX_BUFFER_DIM(240, 400), 0x1000); if(shouldTakeScreenShot){ const int dimx = 240, dimy = 400; FILE *fp = fopen("top.ppm", "wb"); /* b - binary mode */ fprintf(fp, "P6\n%d %d\n255\n", dimx, dimy); u8 * buf = gfxGetFramebuffer(GFX_TOP, cur_side, NULL, NULL); int i; /* Switch from BGR to RGB */ for(i=0; i < 240*400; i++){ u8 buf1 = buf[i*3+0]; buf[i*3+0] = buf[i*3+2]; buf[i*3+2] = buf1; } fwrite(buf, 240*400*3,1, fp); fclose(fp); } } else { GX_SetDisplayTransfer(NULL, gpu_fb_addr, GX_BUFFER_DIM(240, 320), (u32 *)gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL), GX_BUFFER_DIM(240, 320), 0x1000); if(shouldTakeScreenShot){ const int dimx = 240, dimy = 320; FILE *fp = fopen("bottom.ppm", "wb"); /* b - binary mode */ fprintf(fp, "P6\n%d %d\n255\n", dimx, dimy); u8 * buf = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL); int i; /* Switch from BGR to RGB */ for(i=0; i < 240*320; i++){ u8 buf1 = buf[i*3+0]; buf[i*3+0] = buf[i*3+2]; buf[i*3+2] = buf1; } fwrite(buf, 240*320*3,1, fp); fclose(fp); } } gspWaitForPPF(); //Clear the screen GX_SetMemoryFill(NULL, gpu_fb_addr, clear_color, &gpu_fb_addr[0x2EE00], 0x201, gpu_depth_fb_addr, 0x00000000, &gpu_depth_fb_addr[0x2EE00], 0x201); gspWaitForPSC0(); }
Here is the result from the code and some very minor editing:
I chose PPM because it was the simplest image format to make, however most programs like Paint.net don't seem to support it. So I had to use a converter website to make the image a PNG file. Preferably making a .png, .jpg, or even a .bmp would be better. I'm not sure how complicated that would make things.
What do you think?
You should make it self-convert. Also how is MiniCraft3ds. It's HYPE here as i love that game and cant wait for it to be out.
The game itself is about 80% complete. The two main obstacles I have right now is the underground lighting (see earlier posts) and sound. I have not seen any documentation on sound yet, so i'm kinda hoping that someone makes a 3ds sound library for us c/c++ makers.
I don't know about WAV files but for loading a RAW PCM audio file you can use the following code:
Code:
// Audio variables
u8* buffer;
u32 size;
// Audio functions (load audio)
void audio_load(const char *audio){
FILE *file = fopen(audio, "rb");
fseek(file, 0, SEEK_END);
off_t size = ftell(file);
fseek(file, 0, SEEK_SET);
buffer = linearAlloc(size);
off_t bytesRead = fread(buffer, 1, size, file);
fclose(file);
csndPlaySound(8, SOUND_FORMAT_16BIT | SOUND_REPEAT, 44100, 1, 0, buffer, buffer, size);
linearFree(buffer);
}
// Audio functions (stop audio)
void audio_stop(void){
csndExecCmds(true);
CSND_SetPlayState(0x8, 0);
memset(buffer, 0, size);
GSPGPU_FlushDataCache(NULL, buffer, size);
linearFree(buffer);
}
Cant seem to compile, I think it's because I have python 2.7 and 3 installed, so it's using python 2.7 and not 3 via the 'python' command, instead of 'python3'. I don't know how to make 'make' run the file in Python 3 instead of Python 2. Help?
Code:
vectrex@Vectrex:~/devkitPro/sf2dlib-master/libsf2d$ make
shader.vsh
File "/home/vectrex/devkitPro/sf2dlib-master/aemstro.py", line 158
print(" "*numIdent+s,end='')
^
SyntaxError: invalid syntax
make[1]: *** [shader.vsh.o] Error 1
make: *** [build] Error 2
Last edited by Lucar,
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I haven't really looked into this lib yet but...
Would this lib be faster than doing the following?
(the slider part isn't really important at all)
Is there for example an 8bit paletted texture format or something?
Would this lib be faster than doing the following?
Code:
// get screen buffer
u8* bufAdr=gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
int slider = 22- ((CONFIG_3D_SLIDERSTATE)*22); // scroll screen using 3d slider!
for(int y=slider; y<240+slider; y++){
for(int x=0; x<384; x++){
int r = palette_red[bufmem[x+512*y]];
int g = palette_green[bufmem[x+512*y]];
int b = palette_blue[bufmem[x+512*y]];
drawPixel(x+8,y-slider,r,g,b,bufAdr);
}
}(the slider part isn't really important at all)
Is there for example an 8bit paletted texture format or something?
Last edited by spinal_cord,
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