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feat(sdl): add PARTIAL_MODE to emulate setups with display controller

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This commit is contained in:
Gabor Kiss-Vamosi
2023-03-06 11:51:32 +01:00
parent 43e2da7d0f
commit d78aebf224
3 changed files with 36 additions and 1 deletions
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1
lv_conf_template.h
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@@ -752,6 +752,7 @@
#define LV_USE_SDL 0 #define LV_USE_SDL 0
#if LV_USE_SDL #if LV_USE_SDL
#define LV_SDL_INCLUDE_PATH <SDL2/SDL.h> #define LV_SDL_INCLUDE_PATH <SDL2/SDL.h>
#define LV_SDL_PARTIAL_MODE 0 /*Recommended only to emulate a setup with a display controller*/
#endif #endif
/*Driver for /dev/fb*/ /*Driver for /dev/fb*/

29
src/dev/sdl/lv_sdl_window.c
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@@ -17,6 +17,9 @@
* DEFINES * DEFINES
*********************/ *********************/
/*Recommended only to emulate a setup with a display controller*/
#define LV_SDL_PARTIAL_MODE 0
/********************** /**********************
* TYPEDEFS * TYPEDEFS
**********************/ **********************/
@@ -85,8 +88,14 @@ lv_disp_t * lv_sdl_window_create(lv_coord_t hor_res, lv_coord_t ver_res)
window_create(disp); window_create(disp);
lv_disp_set_flush_cb(disp, flush_cb); lv_disp_set_flush_cb(disp, flush_cb);
#if LV_SDL_PARTIAL_MODE
uint8_t * buf = malloc(32 * 1024);
lv_disp_set_draw_buffers(disp, buf, NULL,
32 * 1024, LV_DISP_RENDER_MODE_PARTIAL);
#else
lv_disp_set_draw_buffers(disp, dsc->fb, NULL, lv_disp_set_draw_buffers(disp, dsc->fb, NULL,
lv_disp_get_hor_res(disp) * lv_disp_get_hor_res(disp) * sizeof(lv_color_t), LV_DISP_RENDER_MODE_DIRECT); lv_disp_get_hor_res(disp) * lv_disp_get_hor_res(disp) * sizeof(lv_color_t), LV_DISP_RENDER_MODE_DIRECT);
#endif
lv_disp_add_event(disp, res_chg_event_cb, LV_EVENT_RESOLUTION_CHANGED, NULL); lv_disp_add_event(disp, res_chg_event_cb, LV_EVENT_RESOLUTION_CHANGED, NULL);
return disp; return disp;
@@ -131,6 +140,22 @@ static void flush_cb(lv_disp_t * disp, const lv_area_t * area, lv_color_t * colo
LV_UNUSED(area); LV_UNUSED(area);
LV_UNUSED(color_p); LV_UNUSED(color_p);
#if LV_SDL_PARTIAL_MODE
int32_t y;
uint32_t w = lv_area_get_width(area);
lv_sdl_window_t * dsc = lv_disp_get_driver_data(disp);
lv_coord_t hor_res = lv_disp_get_hor_res(disp);
lv_color_t * fb_tmp = dsc->fb;
fb_tmp += area->y1 * hor_res;
fb_tmp += area->x1;
for(y = area->y1; y <= area->y2; y++) {
lv_memcpy(fb_tmp, color_p, w * sizeof(lv_color_t));
color_p += w;
fb_tmp += hor_res;
}
#endif
/* TYPICALLY YOU DO NOT NEED THIS /* TYPICALLY YOU DO NOT NEED THIS
* If it was the last part to refresh update the texture of the window.*/ * If it was the last part to refresh update the texture of the window.*/
if(lv_disp_flush_is_last(disp)) { if(lv_disp_flush_is_last(disp)) {
@@ -238,8 +263,10 @@ static void texture_resize(lv_disp_t * disp)
lv_sdl_window_t * dsc = lv_disp_get_driver_data(disp); lv_sdl_window_t * dsc = lv_disp_get_driver_data(disp);
dsc->fb = (lv_color_t *)realloc(dsc->fb, sizeof(lv_color_t) * hor_res * ver_res); dsc->fb = (lv_color_t *)realloc(dsc->fb, sizeof(lv_color_t) * hor_res * ver_res);
lv_disp_set_draw_buffers(disp, dsc->fb, NULL, hor_res * ver_res * sizeof(lv_color_t), LV_DISP_RENDER_MODE_DIRECT);
#if LV_SDL_PARTIAL_MODE == 0
lv_disp_set_draw_buffers(disp, dsc->fb, NULL, hor_res * ver_res * sizeof(lv_color_t), LV_DISP_RENDER_MODE_DIRECT);
#endif
if(dsc->texture) SDL_DestroyTexture(dsc->texture); if(dsc->texture) SDL_DestroyTexture(dsc->texture);
#if LV_COLOR_DEPTH == 32 #if LV_COLOR_DEPTH == 32

7
src/lv_conf_internal.h
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@@ -2504,6 +2504,13 @@
#define LV_SDL_INCLUDE_PATH <SDL2/SDL.h> #define LV_SDL_INCLUDE_PATH <SDL2/SDL.h>
#endif #endif
#endif #endif
#ifndef LV_SDL_PARTIAL_MODE
#ifdef CONFIG_LV_SDL_PARTIAL_MODE
#define LV_SDL_PARTIAL_MODE CONFIG_LV_SDL_PARTIAL_MODE
#else
#define LV_SDL_PARTIAL_MODE 0 /*Recommended only to emulate a setup with a display controller*/
#endif
#endif
#endif #endif
/*Driver for /dev/fb*/ /*Driver for /dev/fb*/