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revamp letterbox and scaling code and add WindowCoordsToViewport util function

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Sebastian Krzyszkowiak 2016-11-08 23:28:28 +01:00
parent 625f202156
commit 4ecb7e71de
2 changed files with 35 additions and 21 deletions
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55
src/utils.c
View file

@ -352,37 +352,50 @@ SYMBOL_EXPORT void SetupViewport(struct Game *game, struct Viewport config) {
game->viewport.height = game->viewport.width / (float)game->viewport.aspect;
}
}
game->viewport.aspect = game->viewport.width / (float)game->viewport.height;
al_set_target_backbuffer(game->display);
al_identity_transform(&game->projection);
al_use_transform(&game->projection);
al_set_clipping_rectangle(0, 0, al_get_display_width(game->display), al_get_display_height(game->display));
float resolution = al_get_display_width(game->display) / (float)game->viewport.width;
if (al_get_display_height(game->display) / game->viewport.height < resolution) resolution = al_get_display_height(game->display) / (float)game->viewport.height;
float resolution = al_get_display_height(game->display) / (float)game->viewport.height;
if (al_get_display_width(game->display) / (float)game->viewport.width < resolution) {
resolution = al_get_display_width(game->display) / (float)game->viewport.width;
}
if (game->viewport.integer_scaling) {
resolution = floor(resolution);
}
if (resolution < 1) resolution = 1;
if (atoi(GetConfigOptionDefault(game, "SuperDerpy", "letterbox", "1"))) {
int clipWidth = game->viewport.width * resolution, clipHeight = game->viewport.height * resolution;
int clipX = (al_get_display_width(game->display) - clipWidth) / 2, clipY = (al_get_display_height(game->display) - clipHeight) / 2;
al_set_clipping_rectangle(clipX, clipY, clipWidth, clipHeight);
al_build_transform(&game->projection, clipX, clipY, resolution, resolution, 0.0f);
al_use_transform(&game->projection);
} else if ((atoi(GetConfigOptionDefault(game, "SuperDerpy", "rotate", "1"))) && (game->viewport.height > game->viewport.width)) {
al_identity_transform(&game->projection);
al_rotate_transform(&game->projection, 0.5*ALLEGRO_PI);
al_translate_transform(&game->projection, game->viewport.width, 0);
al_scale_transform(&game->projection, resolution, resolution);
al_use_transform(&game->projection);
int temp = game->viewport.height;
game->viewport.height = game->viewport.width;
game->viewport.width = temp;
if ((!atoi(GetConfigOptionDefault(game, "SuperDerpy", "downscale", "1"))) && (resolution < 1)) {
resolution = 1;
}
if (!atoi(GetConfigOptionDefault(game, "SuperDerpy", "scaling", "1"))) {
resolution = 1;
}
if (resolution == 0) {
resolution = 1;
}
int clipWidth = game->viewport.width * resolution;
int clipHeight = game->viewport.height * resolution;
if (atoi(GetConfigOptionDefault(game, "SuperDerpy", "letterbox", "1"))) {
int clipX = (al_get_display_width(game->display) - clipWidth) / 2;
int clipY = (al_get_display_height(game->display) - clipHeight) / 2;
al_build_transform(&game->projection, clipX, clipY, resolution, resolution, 0.0f);
al_set_clipping_rectangle(clipX, clipY, clipWidth, clipHeight);
} else if (atoi(GetConfigOptionDefault(game, "SuperDerpy", "scaling", "1"))) {
al_build_transform(&game->projection, 0, 0, al_get_display_width(game->display) / (float)game->viewport.width, al_get_display_height(game->display) / (float)game->viewport.height, 0.0f);
}
al_use_transform(&game->projection);
if (game->_priv.console) Console_Unload(game);
Console_Load(game);
}
SYMBOL_EXPORT void WindowCoordsToViewport(struct Game *game, int *x, int *y) {
int clipX, clipY, clipWidth, clipHeight;
al_get_clipping_rectangle(&clipX, &clipY, &clipWidth, &clipHeight);
*x -= clipX;
*y -= clipY;
*x /= clipWidth / (float)game->viewport.width;
*y /= clipHeight / (float)game->viewport.height;
}

1
src/utils.h
View file

@ -70,4 +70,5 @@ void FatalError(struct Game *game, bool exit, char* format, ...);
void SetupViewport(struct Game *game, struct Viewport config);
void WindowCoordsToViewport(struct Game *game, int *x, int *y);
#endif