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https://github.com/libretro/RetroArch
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Start documenting gfx_common.c
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@ -151,6 +151,17 @@ void gfx_set_dwm(void)
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}
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#endif
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/**
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* gfx_scale_integer:
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* @vp : Viewport handle
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* @width : Width.
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* @height : Height.
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* @aspect_ratio : Aspect ratio (in float).
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* @keep_aspect : Preserve aspect ratio?
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*
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* Gets new viewport scaling dimensions based on
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* scaled integer aspect ratio.
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**/
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void gfx_scale_integer(struct rarch_viewport *vp, unsigned width,
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unsigned height, float aspect_ratio, bool keep_aspect)
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{
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@ -169,11 +180,10 @@ void gfx_scale_integer(struct rarch_viewport *vp, unsigned width,
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}
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else
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{
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unsigned base_height, base_width;
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unsigned base_width;
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/* Use system reported sizes as these define the
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* geometry for the "normal" case. */
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base_height = g_extern.system.av_info.geometry.base_height;
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unsigned base_height = g_extern.system.av_info.geometry.base_height;
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if (base_height == 0)
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base_height = 1;
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@ -248,6 +258,13 @@ char rotation_lut[4][32] =
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"270 deg"
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};
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/**
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* gfx_set_square_pixel_viewport:
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* @width : Width.
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* @height : Height.
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*
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* Sets viewport to square pixel aspect ratio based on @width and @height.
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**/
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void gfx_set_square_pixel_viewport(unsigned width, unsigned height)
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{
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unsigned len, highest, i, aspect_x, aspect_y;
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@ -272,6 +289,11 @@ void gfx_set_square_pixel_viewport(unsigned width, unsigned height)
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aspectratio_lut[ASPECT_RATIO_SQUARE].value = (float)aspect_x / aspect_y;
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}
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/**
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* gfx_set_core_viewport:
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*
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* Sets viewport to aspect ratio set by core A/V info.
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**/
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void gfx_set_core_viewport(void)
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{
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const struct retro_game_geometry *geom =
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@ -31,6 +31,19 @@ extern "C" {
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#include "../config.h"
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#endif
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/**
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* gfx_get_fps:
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* @buf : string suitable for Window title
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* @size : size of buffer.
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* @buf_fps : string of raw FPS only (optional).
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* @size_fps : size of raw FPS buffer.
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*
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* Get the amount of frames per seconds.
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*
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* Returns: true if framerate per seconds could be obtained,
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* otherwise false.
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*
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**/
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bool gfx_get_fps(char *buf, size_t size,
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char *buf_fps, size_t size_fps);
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@ -38,6 +51,17 @@ bool gfx_get_fps(char *buf, size_t size,
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void gfx_set_dwm(void);
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#endif
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/**
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* gfx_scale_integer:
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* @vp : Viewport handle
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* @width : Width.
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* @height : Height.
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* @aspect_ratio : Aspect ratio (in float).
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* @keep_aspect : Preserve aspect ratio?
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*
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* Gets new viewport scaling dimensions based on
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* scaled integer aspect ratio.
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**/
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void gfx_scale_integer(struct rarch_viewport *vp,
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unsigned win_width, unsigned win_height,
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float aspect_ratio, bool keep_aspect);
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@ -106,8 +130,22 @@ struct aspect_ratio_elem
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extern struct aspect_ratio_elem aspectratio_lut[ASPECT_RATIO_END];
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/**
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* gfx_set_square_pixel_viewport:
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* @width : Width.
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* @height : Height.
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*
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* Sets viewport to square pixel aspect ratio based on @width and @height.
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**/
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void gfx_set_square_pixel_viewport(unsigned width, unsigned height);
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/**
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* gfx_set_core_viewport:
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*
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* Sets viewport to aspect ratio set by core A/V info.
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**/
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void gfx_set_core_viewport(void);
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void gfx_set_config_viewport(void);
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#ifdef __cplusplus
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