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Try to work around mesa's invariant bug, by disabling use of the invariant keyword entirely.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5411 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2019-02-24 07:43:32 +00:00
parent c4381e48a0
commit 75e927c030
2 changed files with 11 additions and 1 deletions
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11
engine/gl/gl_vidcommon.c
View file

@ -1085,6 +1085,15 @@ void GL_CheckExtensions (void *(*getglfunction) (char *name))
Con_DPrintf("GLSL available\n");
}
if (Cvar_Get("gl_blacklist_invariant", "0", CVAR_VIDEOLATCH, "gl blacklists")->ival)
gl_config.blacklist_invariant = true;
else if (gl_config.arb_shader_objects && !gl_config_nofixedfunc &&
strstr(gl_renderer, " Mesa ") && gl_config.glversion <= 3.1 && Cvar_Get("gl_blacklist_mesa_invariant", "1", CVAR_VIDEOLATCH, "gl blacklists")->ival)
{
gl_config.blacklist_invariant = true;
Con_Printf(CON_NOTICE "Mesa detected, disabling the use of glsl's invariant keyword. This will result in z-fighting. Use '+set gl_blacklist_mesa_invariant 0' on the commandline to reenable it.\n");
}
if (gl_config.arb_shader_objects)
qglGetIntegerv(GL_MAX_VERTEX_ATTRIBS_ARB, &gl_config.maxattribs);
#endif
@ -2251,7 +2260,7 @@ static GLhandleARB GLSlang_CreateShader (program_t *prog, const char *name, int
break;
case GL_VERTEX_SHADER_ARB:
GLSlang_GenerateInternal(&glsl, "#define VERTEX_SHADER\n");
if (ver >= 120 || gl_config_gles) //invariant appeared in glsl 120, or glessl 100. rtlights, stencil shadows, multipass materials, fog volumes, blend-depth-masking all need invariant depth.
if ((ver >= 120 || gl_config_gles) && !gl_config.blacklist_invariant) //invariant appeared in glsl 120, or glessl 100. rtlights, stencil shadows, multipass materials, fog volumes, blend-depth-masking all need invariant depth.
GLSlang_GenerateInternal(&glsl, "invariant gl_Position;\n");
if (gl_config.gles)
{

1
engine/gl/glquake.h
View file

@ -225,6 +225,7 @@ typedef struct {
qboolean nofixedfunc;
qboolean gles;
qboolean webgl_ie; //workaround ie webgl bugs/omissions.
qboolean blacklist_invariant; //mesa's invariant keyword is broken (for us when combined with fixed function)
qboolean tex_env_combine;
qboolean nv_tex_env_combine4;
qboolean env_add;