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Start documenting gfx_common.c

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This commit is contained in:
twinaphex 2015-01-10 18:23:07 +01:00
parent 2f195b96cd
commit 7f30aee093
2 changed files with 63 additions and 3 deletions
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28
gfx/gfx_common.c
View File

@ -151,6 +151,17 @@ void gfx_set_dwm(void)
}
#endif
/**
* gfx_scale_integer:
* @vp : Viewport handle
* @width : Width.
* @height : Height.
* @aspect_ratio : Aspect ratio (in float).
* @keep_aspect : Preserve aspect ratio?
*
* Gets new viewport scaling dimensions based on
* scaled integer aspect ratio.
**/
void gfx_scale_integer(struct rarch_viewport *vp, unsigned width,
unsigned height, float aspect_ratio, bool keep_aspect)
{
@ -169,11 +180,10 @@ void gfx_scale_integer(struct rarch_viewport *vp, unsigned width,
}
else
{
unsigned base_height, base_width;
unsigned base_width;
/* Use system reported sizes as these define the
* geometry for the "normal" case. */
base_height = g_extern.system.av_info.geometry.base_height;
unsigned base_height = g_extern.system.av_info.geometry.base_height;
if (base_height == 0)
base_height = 1;
@ -248,6 +258,13 @@ char rotation_lut[4][32] =
"270 deg"
};
/**
* gfx_set_square_pixel_viewport:
* @width : Width.
* @height : Height.
*
* Sets viewport to square pixel aspect ratio based on @width and @height.
**/
void gfx_set_square_pixel_viewport(unsigned width, unsigned height)
{
unsigned len, highest, i, aspect_x, aspect_y;
@ -272,6 +289,11 @@ void gfx_set_square_pixel_viewport(unsigned width, unsigned height)
aspectratio_lut[ASPECT_RATIO_SQUARE].value = (float)aspect_x / aspect_y;
}
/**
* gfx_set_core_viewport:
*
* Sets viewport to aspect ratio set by core A/V info.
**/
void gfx_set_core_viewport(void)
{
const struct retro_game_geometry *geom =

38
gfx/gfx_common.h
View File

@ -31,6 +31,19 @@ extern "C" {
#include "../config.h"
#endif
/**
* gfx_get_fps:
* @buf : string suitable for Window title
* @size : size of buffer.
* @buf_fps : string of raw FPS only (optional).
* @size_fps : size of raw FPS buffer.
*
* Get the amount of frames per seconds.
*
* Returns: true if framerate per seconds could be obtained,
* otherwise false.
*
**/
bool gfx_get_fps(char *buf, size_t size,
char *buf_fps, size_t size_fps);
@ -38,6 +51,17 @@ bool gfx_get_fps(char *buf, size_t size,
void gfx_set_dwm(void);
#endif
/**
* gfx_scale_integer:
* @vp : Viewport handle
* @width : Width.
* @height : Height.
* @aspect_ratio : Aspect ratio (in float).
* @keep_aspect : Preserve aspect ratio?
*
* Gets new viewport scaling dimensions based on
* scaled integer aspect ratio.
**/
void gfx_scale_integer(struct rarch_viewport *vp,
unsigned win_width, unsigned win_height,
float aspect_ratio, bool keep_aspect);
@ -106,8 +130,22 @@ struct aspect_ratio_elem
extern struct aspect_ratio_elem aspectratio_lut[ASPECT_RATIO_END];
/**
* gfx_set_square_pixel_viewport:
* @width : Width.
* @height : Height.
*
* Sets viewport to square pixel aspect ratio based on @width and @height.
**/
void gfx_set_square_pixel_viewport(unsigned width, unsigned height);
/**
* gfx_set_core_viewport:
*
* Sets viewport to aspect ratio set by core A/V info.
**/
void gfx_set_core_viewport(void);
void gfx_set_config_viewport(void);
#ifdef __cplusplus