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Added an environment variable to select which driver the software renderer will use.

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401974
This commit is contained in:
Sam Lantinga 2006-07-23 00:48:12 +00:00
parent 1d8a5a2349
commit 74b85ef7fe
1 changed files with 12 additions and 5 deletions
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11
src/video/SDL_renderer_sw.c
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@ -159,6 +159,7 @@ SW_CreateRenderer(SDL_Window * window, Uint32 flags)
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
Uint32 renderer_flags;
const char *desired_driver;
if (!SDL_PixelFormatEnumToMasks
(displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
@ -216,15 +217,21 @@ SW_CreateRenderer(SDL_Window * window, Uint32 flags)
if (flags & SDL_Renderer_PresentVSync) {
renderer_flags |= SDL_Renderer_PresentVSync;
}
desired_driver = SDL_getenv("SDL_VIDEO_RENDERER_SWDRIVER");
for (i = 0; i < display->num_render_drivers; ++i) {
SDL_RenderDriver *driver = &display->render_drivers[i];
if (driver->info.name != SW_RenderDriver.info.name) {
if (driver->info.name == SW_RenderDriver.info.name) {
continue;
}
if (desired_driver
&& SDL_strcasecmp(desired_driver, driver->info.name) != 0) {
continue;
}
data->renderer = driver->CreateRenderer(window, renderer_flags);
if (data->renderer) {
break;
}
}
}
if (i == display->num_render_drivers) {
SW_DestroyRenderer(renderer);
SDL_SetError("Couldn't find display render driver");