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Display loaded TIFF in SDL window

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Abdelrahman Said
2024-05-04 19:15:34 +01:00
parent 8f9edb441a
commit a508048211
1 changed files with 113 additions and 101 deletions
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214
src/main.c
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@@ -30,6 +30,8 @@ struct point {
}; };
Point point_from_index(u32 index, u32 w); Point point_from_index(u32 index, u32 w);
void write_debug_ppm6(const Image *img);
SDL_Texture *image_to_texture(SDL_Renderer *renderer, const Image *img);
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
int exit_code = EXIT_SUCCESS; int exit_code = EXIT_SUCCESS;
@@ -47,6 +49,91 @@ int main(int argc, char *argv[]) {
goto MAIN_DESTROY_ARENA; goto MAIN_DESTROY_ARENA;
} }
write_debug_ppm6(img);
if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
exit_code = EXIT_FAILURE;
goto MAIN_DESTROY_ARENA;
};
SDL_Window *window =
SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
if (!window) {
exit_code = EXIT_FAILURE;
goto MAIN_QUIT_SDL;
}
SDL_Renderer *renderer = SDL_CreateRenderer(
window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (!renderer) {
exit_code = EXIT_FAILURE;
goto MAIN_DESTROY_WINDOW;
}
SDL_Texture *texture = image_to_texture(renderer, img);
if (!texture) {
exit_code = EXIT_FAILURE;
goto MAIN_DESTROY_RENDERER;
}
SDL_Rect dest = {
.h = img->height,
.w = img->width,
.x = (WINDOW_WIDTH - img->width) / 2,
.y = (WINDOW_HEIGHT - img->height) / 2,
};
bool running = true;
SDL_Event event = {0};
while (running) {
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
running = false;
break;
}
}
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, &dest);
SDL_RenderPresent(renderer);
}
SDL_DestroyTexture(texture);
MAIN_DESTROY_RENDERER:
SDL_DestroyRenderer(renderer);
MAIN_DESTROY_WINDOW:
SDL_DestroyWindow(window);
MAIN_QUIT_SDL:
SDL_Quit();
MAIN_DESTROY_ARENA:
wapp_mem_arena_destroy(&arena);
return exit_code;
}
Point point_from_index(u32 index, u32 w) {
Point out = {0};
out.x = index % w;
out.y = (index - (index % w)) / w;
return out;
}
void write_debug_ppm6(const Image *img) {
FILE *out = fopen("test.ppm", "wb"); FILE *out = fopen("test.ppm", "wb");
char magic[] = {'P', '6', '\n'}; char magic[] = {'P', '6', '\n'};
@@ -65,110 +152,35 @@ int main(int argc, char *argv[]) {
} }
fclose(out); fclose(out);
// if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
// exit_code = EXIT_FAILURE;
// goto MAIN_FREE_CONTEXT;
// };
// SDL_Window *window =
// SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED,
// SDL_WINDOWPOS_CENTERED,
// WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
// if (!window) {
// exit_code = EXIT_FAILURE;
// goto MAIN_QUIT_SDL;
// }
// SDL_Renderer *renderer = SDL_CreateRenderer(
// window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
// if (!renderer) {
// exit_code = EXIT_FAILURE;
// goto MAIN_DESTROY_WINDOW;
// }
// SDL_Surface *surface = SDL_CreateRGBSurface(0, img->width, img->height, 32,
// RMASK, GMASK, BMASK, AMASK);
// if (!surface) {
// exit_code = EXIT_FAILURE;
// goto MAIN_DESTROY_RENDERER;
// }
// uint64_t surface_length = surface->h * surface->pitch;
// printf("%lu\n", surface_length);
// printf("%u\n", surface->w * surface->h);
// SDL_LockSurface(surface);
// u64 position = 0;
// for (u64 i = 0; i < surface_length; i += surface->pitch) {
// memcpy(&(((u32 *)surface->pixels)[i]), &(img->data[position]),
// surface->pitch / sizeof(Pixel));
// position += surface->pitch;
// }
// SDL_UnlockSurface(surface);
// SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, surface);
// if (!texture) {
// exit_code = EXIT_FAILURE;
// goto MAIN_DESTROY_SURFACE;
// }
// SDL_Rect dest = {
// .w = surface->w,
// .h = surface->h,
// .x = (WINDOW_WIDTH - surface->w) / 2,
// .y = (WINDOW_HEIGHT - surface->h) / 2,
// };
// bool running = true;
// SDL_Event event = {0};
// while (running) {
// while (SDL_PollEvent(&event)) {
// switch (event.type) {
// case SDL_QUIT:
// running = false;
// break;
// }
// }
// SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
// SDL_RenderClear(renderer);
// SDL_RenderCopy(renderer, texture, NULL, &dest);
// SDL_RenderPresent(renderer);
// }
// SDL_DestroyTexture(texture);
// MAIN_DESTROY_SURFACE:
// SDL_FreeSurface(surface);
// MAIN_DESTROY_RENDERER:
// SDL_DestroyRenderer(renderer);
// MAIN_DESTROY_WINDOW:
// SDL_DestroyWindow(window);
// MAIN_QUIT_SDL:
// SDL_Quit();
MAIN_DESTROY_ARENA:
wapp_mem_arena_destroy(&arena);
return exit_code;
} }
Point point_from_index(u32 index, u32 w) { SDL_Texture *image_to_texture(SDL_Renderer *renderer, const Image *img) {
Point out = {0}; SDL_Texture *output = NULL;
if (!renderer || !img) {
goto IMAGE_TO_TEXTURE_RETURN;
}
out.x = index % w; SDL_Surface *surface = SDL_CreateRGBSurface(0, img->width, img->height, 32,
RMASK, GMASK, BMASK, AMASK);
if (!surface) {
goto IMAGE_TO_TEXTURE_RETURN;
}
out.y = (index - (index % w)) / w; SDL_LockSurface(surface);
u64 position = 0;
for (u64 i = 0; i < img->pixel_count; i += surface->w) {
void *start = (void *)((uptr)(surface->pixels) + position);
return out; memcpy(start, &(img->data[i]), surface->w * sizeof(Pixel));
position += surface->pitch;
}
SDL_UnlockSurface(surface);
output = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
IMAGE_TO_TEXTURE_RETURN:
return output;
} }