36 lines
1.4 KiB
GDScript
36 lines
1.4 KiB
GDScript
tool
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extends MMGenBase
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class_name MMGenTexture
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"""
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Base class for texture generators that provide a texture as output
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"""
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var texture : ImageTexture = ImageTexture.new()
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func get_output_defs() -> Array:
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return [ { type="rgba" } ]
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func get_globals(texture_name : String) -> Array:
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return [ "uniform sampler2D "+texture_name+";\n" ]
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func _get_shader_code_lod(uv : String, _output_index : int, context : MMGenContext, lod : float = -1.0, texture_suffix : String = "_tex") -> Dictionary:
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var genname = "o"+str(get_instance_id())
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var rv = { globals=[], defs="", code="", type="rgba" }
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var texture_name = genname+texture_suffix
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var variant_index = context.get_variant(self, uv)
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if variant_index == -1:
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variant_index = context.get_variant(self, uv)
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if lod < 0.0:
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rv.code = "vec4 %s_%d = textureLod(%s, %s, 0.0);\n" % [ genname, variant_index, texture_name, uv ]
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else:
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rv.defs = "uniform float p_o%s_lod = %.09f;\n" % [ str(get_instance_id()), lod ]
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rv.code = "vec4 %s_%d = textureLod(%s, %s, p_o%s_lod);\n" % [ genname, variant_index, texture_name, uv, str(get_instance_id()) ]
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rv.rgba = "%s_%d" % [ genname, variant_index ]
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rv.globals = get_globals(texture_name)
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rv.textures = { texture_name:texture }
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return rv
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func _get_shader_code(uv : String, output_index : int, context : MMGenContext) -> Dictionary:
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return _get_shader_code_lod(uv, output_index, context)
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