diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ds.mk | 5 | ||||
| -rw-r--r-- | src/makefile | 1 | ||||
| -rw-r--r-- | src/ppusim/sim.c | 48 |
3 files changed, 54 insertions, 0 deletions
@@ -1,2 +1,7 @@ CC := gcc LD := gcc + +LFLAGS += -lSDL2 + +DESKTOP_SRCS += ppusim/main.c + diff --git a/src/makefile b/src/makefile index 6077824..f433385 100644 --- a/src/makefile +++ b/src/makefile @@ -33,6 +33,7 @@ AFLAGS += $(SHARED_FLAGS) SRCS += $(LOCAL_SRCS) SRCS += $(if $(STM), $(STM_SRCS), ) +SRCS += $(if $(DESKTOP), $(DESKTOP_SRCS), ) ifeq ($(PLATFORM),stm) OBJS := $(patsubst %.c,%-stm.o, $(patsubst %.s,%-stm.o, $(SRCS))) diff --git a/src/ppusim/sim.c b/src/ppusim/sim.c new file mode 100644 index 0000000..beddc3f --- /dev/null +++ b/src/ppusim/sim.c @@ -0,0 +1,48 @@ +#include <stdlib.h> +#include <stdbool.h> +#include <math.h> +#include <SDL2/SDL.h> + +#define UPSCALE_FACTOR 3 +#define WIN_HEIGHT 240 +#define WIN_WIDTH 320 +#define FPS 60 + +static void pixel(SDL_Renderer* r, unsigned px, unsigned py, unsigned cr, unsigned cg, unsigned cb) { + SDL_SetRenderDrawColor(r, cr, cg, cb, 255); + SDL_RenderFillRect(r, &(SDL_Rect) {.x = px * UPSCALE_FACTOR, .y = py * UPSCALE_FACTOR, .w = UPSCALE_FACTOR, .h = UPSCALE_FACTOR}); +} + +int main() { + SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS); + SDL_Window *window = SDL_CreateWindow("sdl2 test", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIN_WIDTH * UPSCALE_FACTOR, WIN_HEIGHT * UPSCALE_FACTOR, SDL_WINDOW_SHOWN); + SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED); + + SDL_Event e; + unsigned long frame = 0; + while (true) { + uint32_t start = SDL_GetTicks(); + frame++; + while (SDL_PollEvent(&e)) if (e.type == SDL_QUIT) exit(0); + + SDL_RenderClear(renderer); + + for (unsigned i = 0; i < WIN_WIDTH; i++) { + for (unsigned j = 0; j < WIN_HEIGHT; j++) { + pixel(renderer, i, j, (unsigned)(sqrt(i * 20) + frame) % 255, (i * j + frame) % 255, (j * 20) % 255); + } + } + + SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255); + SDL_RenderPresent(renderer); + + uint32_t end = SDL_GetTicks(); + int wait_for = 1000 / FPS - (end - start); + if (wait_for > 0) SDL_Delay(wait_for); + } + + SDL_DestroyRenderer(renderer); + SDL_DestroyWindow(window); + SDL_Quit(); + return 0; +} |