/* render the console on a surface/texture
SDL12 : vbitmap = SDL_Surface
SDL2 : vbitmap = SDL_Texture */
static void render(void *vbitmap, int console_width, int console_height, char_t *console_buffer, char_t *prev_console_buffer) {
char_t *prev_console_buffer_ptr = prev_console_buffer;
if ( TCOD_ctx.renderer == TCOD_RENDERER_SDL ) {
TCOD_sys_console_to_bitmap(vbitmap, console_width, console_height, console_buffer, prev_console_buffer_ptr);
if ( TCOD_ctx.sdl_cbk ) {
TCOD_ctx.sdl_cbk((void *)screen);
}
SDL_Flip(screen);
}
#ifndef NO_OPENGL
else {
TCOD_opengl_render(oldFade, ascii_updated, console_buffer, prev_console_buffer);
TCOD_opengl_swap();
}
#endif
oldFade=(int)TCOD_console_get_fade();
if ( any_ascii_updated ) {
memset(ascii_updated,0,sizeof(bool)*TCOD_ctx.max_font_chars);
any_ascii_updated=false;
}
}
/* In order to avoid rendering race conditions and the ensuing segmentation
* faults, this should only be called when it would normally be and not
* specifically to force screen refreshes. To this end, and to avoid
* threading complications it takes care of special cases internally. */
static void render(void *vbitmap, int console_width, int console_height, char_t *console_buffer, char_t *prev_console_buffer) {
char_t *prev_console_buffer_ptr = prev_console_buffer;
if ( TCOD_ctx.renderer == TCOD_RENDERER_SDL ) {
int console_width_p = console_width*TCOD_ctx.font_width;
int console_height_p = console_height*TCOD_ctx.font_height;
/* Make a bitmap of exact rendering size and correct format. */
if (scale_screen == NULL) {
int bpp;
Uint32 rmask, gmask, bmask, amask;
if (SDL_PixelFormatEnumToMasks(SDL_GetWindowPixelFormat(window), &bpp, &rmask, &gmask, &bmask, &amask) == SDL_FALSE) {
TCOD_fatal("SDL : failed to create scaling surface : indeterminate window pixel format");
return;
}
scale_screen=SDL_CreateRGBSurface(SDL_SWSURFACE,console_width_p,console_height_p,bpp,rmask,gmask,bmask,amask);
if (scale_screen == NULL) {
TCOD_fatal("SDL : failed to create scaling surface");
return;
}
} else if (clear_screen) {
clear_screen=false;
SDL_FillRect(scale_screen,0,0);
/* Implicitly do complete console redraw, not just tracked changes. */
prev_console_buffer_ptr = NULL;
}
TCOD_sys_console_to_bitmap(scale_screen, console_width, console_height, console_buffer, prev_console_buffer_ptr);
/* Scale the rendered bitmap to the screen, preserving aspect ratio, and blit it.
* This data is also used for console coordinate resolution.. */
if (scale_data.last_scale_factor != scale_factor || scale_data.last_scale_xc != scale_xc || scale_data.last_scale_yc != scale_yc ||
scale_data.last_fullscreen != TCOD_ctx.fullscreen || scale_data.force_recalc) {
/* Preserve old value of input variables, to enable recalculation if they change. */
scale_data.last_scale_factor = scale_factor;
scale_data.last_scale_xc = scale_xc;
scale_data.last_scale_yc = scale_yc;
scale_data.last_fullscreen = TCOD_ctx.fullscreen;
scale_data.force_recalc = 0;
if (scale_data.last_fullscreen) {
scale_data.surface_width = TCOD_ctx.actual_fullscreen_width;
scale_data.surface_height = TCOD_ctx.actual_fullscreen_height;
} else {
scale_data.surface_width = console_width_p;
scale_data.surface_height = console_height_p;
}
scale_data.min_scale_factor = MAX((float)console_width_p/scale_data.surface_width, (float)console_height_p/scale_data.surface_height);
if (scale_data.min_scale_factor > 1.0f)
scale_data.min_scale_factor = 1.0f;
/*printf("min_scale_factor %0.3f = MAX(%d/%d, %d/%d)", scale_data.min_scale_factor, console_width_p, scale_data.surface_width, console_height_p, scale_data.surface_height);*/
scale_data.dst_height_width_ratio = (float)scale_data.surface_height/scale_data.surface_width;
scale_data.src_proportionate_width = (int)(console_width_p / scale_factor);
scale_data.src_proportionate_height = (int)((console_width_p * scale_data.dst_height_width_ratio) / scale_factor);
/* Work out how much of the console to copy. */
scale_data.src_x0 = (scale_xc * console_width_p) - (0.5f * scale_data.src_proportionate_width);
if (scale_data.src_x0 + scale_data.src_proportionate_width > console_width_p)
scale_data.src_x0 = console_width_p - scale_data.src_proportionate_width;
if (scale_data.src_x0 < 0)
scale_data.src_x0 = 0;
scale_data.src_copy_width = scale_data.src_proportionate_width;
if (scale_data.src_x0 + scale_data.src_copy_width > console_width_p)
scale_data.src_copy_width = console_width_p - scale_data.src_x0;
scale_data.src_y0 = (scale_yc * console_height_p) - (0.5f * scale_data.src_proportionate_height);
if (scale_data.src_y0 + scale_data.src_proportionate_height > console_height_p)
scale_data.src_y0 = console_height_p - scale_data.src_proportionate_height;
if (scale_data.src_y0 < 0)
scale_data.src_y0 = 0;
scale_data.src_copy_height = scale_data.src_proportionate_height;
if (scale_data.src_y0 + scale_data.src_copy_height > console_height_p)
scale_data.src_copy_height = console_height_p - scale_data.src_y0;
scale_data.dst_display_width = (scale_data.src_copy_width * scale_data.surface_width) / scale_data.src_proportionate_width;
scale_data.dst_display_height = (scale_data.src_copy_height * scale_data.surface_height) / scale_data.src_proportionate_height;
scale_data.dst_offset_x = (scale_data.surface_width - scale_data.dst_display_width)/2;
scale_data.dst_offset_y = (scale_data.surface_height - scale_data.dst_display_height)/2;
}
SDL_RenderClear(renderer);
actual_rendering();
SDL_RenderPresent(renderer);
}
#ifndef NO_OPENGL
else {
TCOD_opengl_render(oldFade, ascii_updated, console_buffer, prev_console_buffer);
TCOD_opengl_swap();
}
#endif
oldFade=(int)TCOD_console_get_fade();
if ( any_ascii_updated ) {
memset(ascii_updated,0,sizeof(bool)*TCOD_ctx.max_font_chars);
any_ascii_updated=false;
}
}
