Be more explicit about use of CLAMP_TO_EDGE instead of defaulting to GL CLAMP (!3140) · Merge requests · OpenMW / openmw

Be explicit about the type of wrapMode a texture uses since it defaults to GL_CLAMP in OSG; we should be explicit and call for CLAMP_TO_EDGE -> GL_CLAMP_TO_EDGE.

Also removed CLAMP as something that can be used in post-processing.

Not sure if we also need to add WRAP_R as well?

Addresses parts of #7421

Be more explicit about use of CLAMP_TO_EDGE instead of defaulting to GL CLAMP

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