danni.coy Posted March 3, 2011 Share Posted March 3, 2011 Would this be possible... One of our artists is asking for it as it would make the effect he is trying to achieve much easier Link to comment
ulf.schroeter Posted March 3, 2011 Share Posted March 3, 2011 Would this be possible... One of our artists is asking for it as it would make the effect he is trying to achieve much easier can you specify more precisely which effect he is trying to achieve ? Link to comment
ulf.schroeter Posted March 3, 2011 Share Posted March 3, 2011 Would this be possible... One of our artists is asking for it as it would make the effect he is trying to achieve much easier Thinking about it you could extend UNIGINE material mesh_base in core\materials\unigine_meshes.mat with an optional parameter base_rotation analogous to base_transform used for texture scaling and offsetting <material name="mesh_base" editable="0"> .... <!-- states --> .... <state name="rotation" type="toggle">0</state> .... <!-- ... shaders --> <shader pass="..." object="mesh" .... rotation_defines=",ROTATION" vertex="core/shaders/meshes/vertex_base.shader" fragment="core/shaders/meshes/fragment_base_.....shader"/> .... <!-- parameters --> <parameter name="base_transform" type="expression" shared="1">vec4(1.0f,0.0f,0.0f,1.0f)</parameter> <parameter name="base_rotation" rotation="1" type="expression" shared="1">vec4(1.0f,0.0f,0.0f,1.0f)</parameter> .... </material> where base_rotation vec4 elements define 2x2 rotation matrix elements for additional UV texture coordinate rotation (and also shear). UV texcoord rotation can than be added in core\shaders\meshes\vertex_base.shader .... // texture scale and offset texcoord.xy = texcoord.xy * base_transform.xy + base_transform.zw; #ifdef ROTATION // texture rotation texcoord.xy = texcoord.xy * base_rotation.xy + texcoord.yx * base_rotation.zw; #endif .... Maybe UNIGINE is willing to include this in default materials/shaders for even greater out-of-the-box texture animation flexibility Link to comment
danni.coy Posted March 4, 2011 Author Share Posted March 4, 2011 once again - you rock Link to comment
ulf.schroeter Posted March 4, 2011 Share Posted March 4, 2011 Maybe UNIGINE is willing to include this in default materials/shaders for even greater out-of-the-box texture animation flexibility You have to do it on your own, reason see here. Another maybe helpful general example for custom material shader override here Link to comment
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