erysdren/yeti3dpro-sdl3
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remove several blit operations, should be faster now

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erysdren 2024-10-14 15:16:22 -05:00
parent 86ba27d73d
commit 997d5021ed
1 changed files with 20 additions and 18 deletions
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38
platform/sdl3/main.c
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@ -15,8 +15,6 @@ static u16 backbuffer[YETI_FRAMEBUFFER_WIDTH * YETI_FRAMEBUFFER_HEIGHT];
static SDL_Window *window = NULL;
static SDL_Renderer *renderer = NULL;
static SDL_Texture *texture = NULL;
static SDL_Surface *front = NULL;
static SDL_Surface *back = NULL;
static bool focused = true;
@ -67,17 +65,7 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv)
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
back = SDL_CreateSurfaceFrom(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, SDL_PIXELFORMAT_XBGR1555, backbuffer, YETI_FRAMEBUFFER_WIDTH * sizeof(u16));
if (!back)
die(SDL_GetError());
format = SDL_GetWindowPixelFormat(window);
front = SDL_CreateSurface(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, format);
if (!front)
die(SDL_GetError());
texture = SDL_CreateTexture(renderer, format, SDL_TEXTUREACCESS_STREAMING, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT);
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_XBGR1555, SDL_TEXTUREACCESS_STREAMING, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT);
if (!texture)
die(SDL_GetError());
@ -133,13 +121,20 @@ void do_frame(Sint64 dt)
SDL_AppResult SDL_AppIterate(void *appstate)
{
void *pixels;
int pitch;
/* speed limiter */
now = SDL_GetTicks();
do_frame(now - then);
then = now;
SDL_BlitSurface(back, NULL, front, NULL);
SDL_UpdateTexture(texture, NULL, front->pixels, front->pitch);
if (SDL_LockTexture(texture, NULL, &pixels, &pitch))
{
SDL_memcpy(pixels, backbuffer, sizeof(backbuffer));
SDL_UnlockTexture(texture);
}
SDL_RenderClear(renderer);
SDL_RenderTexture(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
@ -175,12 +170,21 @@ SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
}
else if (event->key.scancode == SDL_SCANCODE_F12)
{
SDL_Surface *screen;
char filename[256];
screen = SDL_CreateSurfaceFrom(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, SDL_PIXELFORMAT_XBGR1555, backbuffer, YETI_FRAMEBUFFER_WIDTH * sizeof(u16));
if (!screen)
die("%s", SDL_GetError());
SDL_snprintf(filename, sizeof(filename), "yeti%03d.bmp", screenshot_idx++);
while (file_exists(filename))
SDL_snprintf(filename, sizeof(filename), "yeti%03d.bmp", screenshot_idx++);
SDL_SaveBMP(back, filename);
SDL_SaveBMP(screen, filename);
SDL_Log("Saved screenshot %s", filename);
SDL_DestroySurface(screen);
}
break;
@ -200,8 +204,6 @@ void SDL_AppQuit(void *appstate, SDL_AppResult result)
{
if (window) SDL_DestroyWindow(window);
if (renderer) SDL_DestroyRenderer(renderer);
if (back) SDL_DestroySurface(back);
if (front) SDL_DestroySurface(front);
if (texture) SDL_DestroyTexture(texture);
SDL_Quit();