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port: gl: allow user to override context version

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fgsfds committed 2023-10-19 13:36:40 +02:00
1 parent abf5703036
commit 6f0cb752aa
1 file changed
+19 -3
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port/fast3d/gfx_sdl2.cpp
+19 -3
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@@ -94,15 +94,30 @@ static void gfx_sdl_init(const char* game_name, const char* gfx_api_name, bool s
// ideally we need 3.0 compat
// if that doesn't work, try 3.2 core in case we're on mac, 2.1 compat as a last resort
static const u32 glver[][3] = {
static u32 glver[][3] = {
{ 0, 0, 0 }, // for command line override
{ 3, 0, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY },
{ 3, 2, SDL_GL_CONTEXT_PROFILE_CORE },
{ 2, 1, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY },
};
u32 glcore = false;
u32 verstart = 1;
const u32 verend = sizeof(glver) / sizeof(*glver);
const char *verstr = sysArgGetString("--gl-version");
if (verstr && *verstr) {
// user override
glver[0][2] = strstr(verstr, "core") ? SDL_GL_CONTEXT_PROFILE_CORE :
SDL_GL_CONTEXT_PROFILE_COMPATIBILITY;
sscanf(verstr, "%d.%d", &glver[0][0], &glver[0][1]);
if (glver[0][0] >= 1 && glver[0][0] <= 4 && glver[0][1] < 9) {
verstart = 0;
}
}
ctx = NULL;
u32 vmin = 0, vmaj = 0;
for (u32 i = 0; i < sizeof(glver) / sizeof(*glver); ++i) {
for (u32 i = verstart; i < verend; ++i) {
vmaj = glver[i][0];
vmin = glver[i][1];
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, vmaj);
@@ -112,6 +127,7 @@ static void gfx_sdl_init(const char* game_name, const char* gfx_api_name, bool s
if (!ctx) {
sysLogPrintf(LOG_WARNING, "GL: could not create GL%d.%d context: %s", vmaj, vmin, SDL_GetError());
} else {
glcore = (glver[i][2] == SDL_GL_CONTEXT_PROFILE_CORE);
break;
}
}
@@ -119,7 +135,7 @@ static void gfx_sdl_init(const char* game_name, const char* gfx_api_name, bool s
if (!ctx) {
sysFatalError("Could not create an OpenGL context of any supported version.\nSDL error: %s", SDL_GetError());
} else {
sysLogPrintf(LOG_NOTE, "GL: created GL%d.%d context", vmaj, vmin);
sysLogPrintf(LOG_NOTE, "GL: created GL%d.%d%s context", vmaj, vmin, glcore ? "core" : "");
}
SDL_GL_MakeCurrent(wnd, ctx);