Only support ES3 if texture swizzling is available

On OSX 10.8 with an Intel HD 3000 we were wrongly exposing ES3 when texture swizzling was not available. BUG=angleproject:891 Change-Id: If71acdc1943ab2f013dc80cd28eab130c32fb201 Reviewed-on: https://chromium-review.googlesource.com/303392Reviewed-by: Jamie Madill <jmadill@chromium.org> Tryjob-Request: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>

Only support ES3 if texture swizzling is available
af5756a1 · Corentin Wallez · 6d85f039 · af5756a1
Commit af5756a1 authored Oct 01, 2015 by Corentin Wallez
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renderergl_utils.cpp src/libANGLE/renderer/gl/renderergl_utils.cpp +16 -0

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--- a/src/libANGLE/renderer/gl/renderergl_utils.cpp
+++ b/src/libANGLE/renderer/gl/renderergl_utils.cpp
@@ -511,6 +511,22 @@ void GenerateCaps(const FunctionsGL *functions, gl::Caps *caps, gl::TextureCapsM
        LimitVersion(maxSupportedESVersion, gl::Version(2, 0));
    }

+    // Can't support ES3 without texture swizzling
+    if (!functions->isAtLeastGL(gl::Version(3, 3)) &&
+        !functions->hasGLExtension("GL_ARB_texture_swizzle") &&
+        !functions->hasGLExtension("GL_EXT_texture_swizzle") &&
+        !functions->isAtLeastGLES(gl::Version(3, 0)))
+    {
+        LimitVersion(maxSupportedESVersion, gl::Version(2, 0));
+
+        // Texture swizzling is required to work around the luminance texture format not being
+        // present in the core profile
+        if (functions->profile & GL_CONTEXT_CORE_PROFILE_BIT)
+        {
+            LimitVersion(maxSupportedESVersion, gl::Version(0, 0));
+        }
+    }
+
    // Extension support
    extensions->setTextureExtensionSupport(*textureCapsMap);
    extensions->elementIndexUint = functions->standard == STANDARD_GL_DESKTOP ||