This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Output rendered using opengles driver (opengles.png, image/png, 2016-01-10 11:55:24 +0000, 33972 bytes)
• Output rendered using opengles2 driver (opengles2.png, image/png, 2016-01-10 11:56:26 +0000, 33948 bytes)

Reported in version: 2.0.4
Reported for operating system, platform: Android (All), x86

Comments on the original bug report:

On 2016-01-10 11:55:24 +0000, Richard Russell wrote:

Created attachment 2360
Output rendered using opengles driver

I am wanting to use OpenGLES (on Android) because I need 'glLogicOp' which is not available in OpenGLES2. However if I force the use of OpenGLES all my graphics are rendered upside-down! I am using a texture as my render target.

See the attached screenshots. The only difference is that in one I use this hint and in the other I don't:

SDL_SetHint (SDL_HINT_RENDER_DRIVER, "opengles") ;

I wonder if this is related to other bugs (e.g. 2700, 2740) which invert the y-coordinate when a render target is used.

On 2016-01-10 11:56:26 +0000, Richard Russell wrote:

Created attachment 2361
Output rendered using opengles2 driver

On 2016-01-10 16:16:56 +0000, Richard Russell wrote:

Functions affected by this bug include SDL_RenderFillRect, SDL_RenderDrawPoint, SDL_RenderDrawPoints, SDL_RenderDrawLine and SDL_RenderDrawLines.

I can't write a patch because the y-coordinates need to be inverted with respect to the height of the target texture (not the window) and I don't know how to discover that.

On 2016-10-01 18:42:09 +0000, Sam Lantinga wrote:

Fixed, thanks!
https://hg.libsdl.org/SDL/rev/16bfa598c1d6

*** This bug has been marked as a duplicate of bug 3347 ***