Commit Graph

20 Commits

Author SHA1 Message Date
Sam Lantinga
611403dd0e Clarified that the clip rectangle is defined relative to the viewport, and added a clip test to testviewport.c 2020-03-08 21:02:40 -07:00
Sam Lantinga
a8780c6a28 Updated copyright date for 2020 2020-01-16 20:49:25 -08:00
Sam Lantinga
5e19e66c73 Fixed bug 4914 - Expose SDL_ScaleMode and add SDL_SetTextureScaleMode/SDL_GetTextureScaleMode
Konrad

This was something rather trivial to add, but asked at least several times before (I did google about it as well).

It should be possible to dynamically change scaling mode of the texture. It is actually trivial task, but until now it was only possible with a hint before creating a texture.

I needed it for my game as well, so I took the liberty of writing it myself.

This patch adds following functions:

SDL_SetTextureScaleMode(SDL_Texture * texture, SDL_ScaleMode scaleMode);
SDL_GetTextureScaleMode(SDL_Texture * texture, SDL_ScaleMode *scaleMode);

That way you can change texture scaling on the fly.
2019-12-22 13:39:44 -08:00
Sylvain Becker
1ae61f1009 Added a helper function SDL_LockTextureToSurface()
Similar to SDL_LockTexture(), except the locked area is exposed as a SDL surface.
2019-09-30 20:58:44 +02:00
Sam Lantinga
5e13087b0f Updated copyright for 2019 2019-01-04 22:01:14 -08:00
Ryan C. Gordon
8340b0f0e2 render: Add floating point versions of various draw APIs. 2018-10-23 01:34:03 -04:00
Ryan C. Gordon
1ecf4dfc5f render: Added SDL_RenderFlush(). 2018-10-04 16:34:44 -04:00
Sam Lantinga
e3cc5b2c6b Updated copyright for 2018 2018-01-03 10:03:25 -08:00
Sam Lantinga
cf3d450313 Added SDL_RenderGetMetalLayer() and SDL_RenderGetMetalCommandEncoder() 2017-12-08 14:30:10 -08:00
Sam Lantinga
2862b1465d Note that texture contents are undefined when the texture is created. 2017-08-12 13:05:26 -07:00
Sam Lantinga
b3589ed6a6 Fixed bug 3492 - SDL_RenderCopyEx angle direction not documented
xyzdragon

Reading https://wiki.libsdl.org/SDL_RenderCopyEx there is no mention what the angle means. Normally in a mathematically environment positive angles translate to counter-clockwise rotations, but in SDL positive angles means clockwise rotation.
2017-08-11 13:24:18 -07:00
Sam Lantinga
d0b46f1bea Fixed bug 3681 - SDL_UpateTexture documentation not specific enough about format requirement
Simon Hug

The documentation of SDL_UpateTexture does not say that the pixel data has to be in the format of the texture.
2017-08-10 11:57:19 -07:00
Sam Lantinga
45b774e3f7 Updated copyright for 2017 2017-01-01 18:33:28 -08:00
Sam Lantinga
3615633571 Renaming of guard header names to quiet -Wreserved-id-macro
Patch contributed by Sylvain
2016-11-20 21:34:54 -08:00
Sam Lantinga
77305d47c2 Fixed bug 3345 - SDL_RenderClear inconsistency with ClipRect
Simon Hug

The description of the SDL_RenderClear function in the SDL_render.h header says the following:

"This function clears the entire rendering target, ignoring the viewport."

The word "entire" implies that the clipping rectangle set with SDL_RenderSetClipRect also gets ignored. This is left somewhat ambiguous if only the viewport is mentioned. Minor thing, but let's see what the implementations actually do.

The software renderer ignores the clipping rectangle when clearing. It even has a comment on this: /* By definition the clear ignores the clip rect */

Most other render drivers (opengl, opengles, opengles2, direct3d, and psp [I assume. Can't test it.]) use the scissor test for the ClipRect and don't disable it when clearing. Clearing will only happen within the clipping rectangle for these drivers.

An exception is direct3d11 which uses a clear function that ignores the scissor test.
2016-10-01 11:46:32 -07:00
Ethan Lee
167cf14c1f SDL_RenderSetIntegerScale 2016-01-05 16:39:18 -05:00
Sam Lantinga
42065e785d Updated copyright to 2016 2016-01-02 10:10:34 -08:00
Alex Szpakowski
4aae0290ea Updated some header comments and iOS documentation to better clarify high-dpi / retina support and screen-coordinate sizes versus pixel sizes. 2015-12-31 21:16:43 -04:00
Philipp Wiesemann
83e94e257b Corrected documentation of the SDL_CreateTexture() functions in header file. 2015-08-21 23:50:59 +02:00
Philipp Wiesemann
0e45984fa0 Fixed crash if initialization of EGL failed but was tried again later.
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().
2015-06-21 17:33:46 +02:00