Check for GLES in init_movit().

[movit] / init.cpp

diff --git a/init.cpp b/init.cpp
index c5e81135dccb1de327883715f735a8e9506be41b..f6f45a04dde17331b385ec4aca77df8dd6e77fa7 100644 (file)
--- a/init.cpp
+++ b/init.cpp
@@ -277,6 +277,21 @@ void measure_roundoff_problems()
 
 bool check_extensions()
 {
+       // GLES generally doesn't use extensions as actively as desktop OpenGL.
+       // For now, we say that for GLES, we require GLES 3, which has everything
+       // we need.
+       //
+       // Since we use implicit #version 100, we don't have round(). We will
+       // fix this at some later stage.
+       if (!epoxy_is_desktop_gl()) {
+               if (epoxy_gl_version() >= 30) {
+                       movit_srgb_textures_supported = true;
+                       movit_shader_rounding_supported = false;
+               } else {
+                       return false;
+               }
+       }
+
        // We fundamentally need FBOs and floating-point textures.
        // FBOs are covered by OpenGL 1.5, and are not an extension there.
        // Floating-point textures are part of OpenGL 3.0 and newer.