mesa/main: fix ARB_texture_float quirk

While ARB_texture_float is indeed supposed to disable clamping, it
should only do so on the APIs where the extension is supported.
Otherwise, we end up disabling clamping also when using GLES 1.x,
which isn't quite what we want.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35097>

src/mesa/main/texparam.c

@@ -887,8 +887,12 @@ set_tex_parameterf(struct gl_context *ctx,
          goto invalid_enum;
 
       flush(ctx);
-      /* ARB_texture_float disables clamping */
-      if (ctx->Extensions.ARB_texture_float) {
+
+      /* ARB_texture_float, OES_texture_float and OES_texture_half_float
+       * disables clamping.
+       */
+      if (_mesa_has_float_textures(ctx) ||
+          _mesa_has_half_float_textures(ctx)) {
          memcpy(texObj->Sampler.Attrib.state.border_color.f, params, 4 * sizeof(float));
       } else {
          texObj->Sampler.Attrib.state.border_color.f[RCOMP] = CLAMP(params[0], 0.0F, 1.0F);