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Add brightness support for the emulator

This commit is contained in:
Alessio Caiazza 2021-12-06 22:48:50 +01:00 committed by Niccolò Izzo
parent 9dc0819b8b
commit 7c978470c2
1 changed files with 27 additions and 0 deletions
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27
platform/targets/linux/emulator/sdl_engine.c
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@ -19,6 +19,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <pthread.h> #include <pthread.h>
#include <state.h>
#include <interfaces/keyboard.h> #include <interfaces/keyboard.h>
#include <SDL2/SDL.h> #include <SDL2/SDL.h>
@ -39,6 +40,8 @@ pthread_mutex_t mu;
bool ready = false; /* Signal if the main loop is ready */ bool ready = false; /* Signal if the main loop is ready */
keyboard_t sdl_keys; /* Store the keyboard status */ keyboard_t sdl_keys; /* Store the keyboard status */
extern state_t state;
bool sdk_key_code_to_key(SDL_Keycode sym, keyboard_t *key) bool sdk_key_code_to_key(SDL_Keycode sym, keyboard_t *key)
{ {
switch (sym) switch (sym)
@ -272,6 +275,23 @@ keyboard_t sdl_getKeys()
return keys; return keys;
} }
bool set_brightness(uint8_t brightness)
{
/*
* When this texture is rendered, during the copy operation each source
* color channel is modulated by the appropriate color value according to
* the following formula:
* srcC = srcC * (color / 255)
*
* Color modulation is not always supported by the renderer;
* it will return -1 if color modulation is not supported.
*/
return SDL_SetTextureColorMod(displayTexture,
brightness,
brightness,
brightness) == 0;
}
/* /*
* SDL main loop. Due to macOS restrictions, this must run on the Main Thread. * SDL main loop. Due to macOS restrictions, this must run on the Main Thread.
*/ */
@ -333,6 +353,7 @@ void sdl_task()
} }
chan_send(&fb_sync, pixels); chan_send(&fb_sync, pixels);
set_brightness(state.settings.brightness);
chan_recv(&fb_sync, NULL); chan_recv(&fb_sync, NULL);
SDL_UnlockTexture(displayTexture); SDL_UnlockTexture(displayTexture);
@ -374,6 +395,12 @@ void init_sdl()
SCREEN_WIDTH, SCREEN_WIDTH,
SCREEN_HEIGHT); SCREEN_HEIGHT);
SDL_RenderClear(renderer); SDL_RenderClear(renderer);
if(!set_brightness(state.settings.brightness))
{
SDL_Log("Cannot apply brightness: %s", SDL_GetError());
}
SDL_RenderCopy(renderer, displayTexture, NULL, NULL); SDL_RenderCopy(renderer, displayTexture, NULL, NULL);
SDL_RenderPresent(renderer); SDL_RenderPresent(renderer);
} }