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7ab928a4e0
Previously cogl_set_source_color and cogl_set_source_texture modified a single global material. If an application then mixes using cogl_set_source_color and texture then the material will constantly need a new ARBfp program because the numbers of layers alternates between 0 and 1. This patch just adds a second global material that is only used for cogl_set_source_texture. I think it would still end up flushing the journal if cogl_set_source_texture is used with multiple different textures but at least it should avoid a recompile unless the texture target also changes. It might be nice to somehow attach a material to the CoglTexture for use with cogl_set_source_texture but it would be difficult to implement this without creating a circular reference.