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vo_opengl: better check for float texture support 

We don't only need float textures for advanced scaling - we also need
them to be filterable with GL_LINEAR. On GLES, this is not supported
until GLES 3.1, but some implementation expose them with extensions.
This commit is contained in:
wm4 2015-11-19 21:17:45 +01:00
parent 368431f57c
commit b86a59aa4f
1 changed files with 8 additions and 7 deletions
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15
video/out/opengl/common.c
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@ -223,13 +223,6 @@ static const struct gl_functions gl_functions[] = {
{0}
}
},
// Float textures, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = 300,
.ver_es_core = 300,
.extension = "GL_ARB_texture_float",
.provides = MPGL_CAP_FLOAT_TEX,
},
// GL_RED / GL_RG textures, extension in GL 2.x, core in GL 3.x core.
{
.ver_core = 300,
@ -486,6 +479,14 @@ void mpgl_load_functions2(GL *gl, void *(*get_fn)(void *ctx, const char *n),
mp_verbose(log, "Detected suspected software renderer.\n");
}
// Detect 16F textures that work with GL_LINEAR filtering.
if ((!gl->es && (gl->version >= 300 || check_ext(gl, "GL_ARB_texture_float"))) ||
(gl->es && (gl->version >= 310 || check_ext(gl, "GL_OES_texture_half_float_linear"))))
{
mp_verbose(log, "Filterable half-float textures supported.\n");
gl->mpgl_caps |= MPGL_CAP_FLOAT_TEX;
}
// Provided for simpler handling if no framebuffer support is available.
if (!gl->BindFramebuffer)
gl->BindFramebuffer = &dummy_glBindFramebuffer;