SDL_RenderTexture9Grid3
Perform a scaled copy using the 9-grid algorithm to the current rendering target at subpixel precision.
Usage
#include "SDL3/SDL.h"
bool SDL_RenderTexture9Grid(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_FRect *srcrect, float left_width, float right_width, float top_height, float bottom_height, float scale, const SDL_FRect *dstrect);
Header file
Defined in SDL3/SDL_render.h
Overview
The pixels in the texture are split into a 3x3 grid, using the different corner sizes for each corner, and the sides and center making up the remaining pixels. The corners are then scaled using scale and fit into the corners of the destination rectangle. The sides and center are then stretched into place to cover the remaining destination rectangle.
Function parameters
- renderer
-
the renderer which should copy parts of a texture.
- texture
-
the source texture.
- srcrect
-
the
SDL_Rect
structure representing the rectangle to be used for the 9-grid, or NULL to use the entire texture.
- left_width
-
the width, in pixels, of the left corners in
srcrect.
- right_width
-
the width, in pixels, of the right corners in
srcrect.
- top_height
-
the height, in pixels, of the top corners in
srcrect.
- bottom_height
-
the height, in pixels, of the bottom corners in
srcrect.
- scale
-
the scale used to transform the corner of
srcrectinto the corner ofdstrect, or 0.0f for an unscaled copy.
- dstrect
-
a pointer to the destination rectangle, or NULL for the entire rendering target.
Return value
Returns true on success or false on failure; call
SDL_GetError () for more information.
Thread safety
This function should only be called on the main thread.