mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-09-10 13:28:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

video: rework how we prepare a texture framebuffer.

Browse Source 
Now we see if we can create an SDL_Renderer, and if that renderer reports
itself as "accelerated," and added some initial heuristics to the OpenGL
renderer to make better decisions about what qualifies as "accelerated."

This adds some FIXMEs that might be merely hypothetical, and removes the
old OpenGL checks from the video subsystem that probably weren't meaningful
in modern times. This will definitely need to improve the existing list
in the GL renderer, to catch things like llvmpipe, etc.

Reference issue #4624.
This commit is contained in:
Ryan C. Gordon
2022-02-02 12:19:37 -05:00
parent 08d27dfd7b
commit 60ddb74cfe
2 changed files with 119 additions and 143 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
src/render/opengl/SDL_render_gl.c
View File

@@ -1690,6 +1690,32 @@ GL_SetVSync(SDL_Renderer * renderer, const int vsync)
return retval;
}
static SDL_bool
GL_IsProbablyAccelerated(const GL_RenderData *data)
{
/*const char *vendor = (const char *) data->glGetString(GL_VENDOR);*/
const char *renderer = (const char *) data->glGetString(GL_RENDERER);
#ifdef __WINDOWS__
if (SDL_strcmp(renderer, "GDI Generic") == 0) {
return SDL_FALSE; /* Microsoft's fallback software renderer. Fix your system! */
}
#endif
#ifdef __APPLE__
if (SDL_strcmp(renderer, "Apple Software Renderer") == 0) {
return SDL_FALSE; /* (a probably very old) Apple software-based OpenGL. */
}
#endif
if (SDL_strcmp(renderer, "Software Rasterizer") == 0) {
return SDL_FALSE; /* (a probably very old) Software Mesa, or some other generic thing. */
}
/* !!! FIXME: swrast? llvmpipe? softpipe? */
return SDL_TRUE;
}
static SDL_Renderer *
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
@@ -1760,7 +1786,7 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->GL_BindTexture = GL_BindTexture;
renderer->GL_UnbindTexture = GL_UnbindTexture;
renderer->info = GL_RenderDriver.info;
renderer->info.flags = SDL_RENDERER_ACCELERATED;
renderer->info.flags = 0; /* will set some flags below. */
renderer->driverdata = data;
renderer->window = window;
@@ -1784,6 +1810,10 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
goto error;
}
if (GL_IsProbablyAccelerated(data)) {
renderer->info.flags |= SDL_RENDERER_ACCELERATED;
}
#ifdef __MACOSX__
/* Enable multi-threaded rendering */
/* Disabled until Ryan finishes his VBO/PBO code...