diff --git gpu/command_buffer/service/feature_info.cc gpu/command_buffer/service/feature_info.cc
index 32e72c6..712d3ac 100644
--- gpu/command_buffer/service/feature_info.cc
+++ gpu/command_buffer/service/feature_info.cc
@@ -1493,8 +1493,10 @@ void FeatureInfo::InitializeFloatAndHalfFloatFeatures(
       }
       enable_ext_color_buffer_float = full_float_support;
     }
-    // Likewise for EXT_color_buffer_half_float on ES2 contexts.
-    if (IsWebGL1OrES2Context() && !enable_ext_color_buffer_half_float) {
+    // Likewise for EXT_color_buffer_half_float on ES2 contexts. On desktop,
+    // require at least GL 3.0, to ensure that all formats are defined.
+    if (IsWebGL1OrES2Context() && !enable_ext_color_buffer_half_float &&
+        (gl_version_info_->is_es || gl_version_info_->IsAtLeastGL(3, 0))) {
       bool full_half_float_support = true;
       GLenum internal_formats[] = {
           GL_R16F, GL_RG16F, GL_RGBA16F,