| Both sides previous revisionPrevious revisionNext revision | Previous revision |
| public:t-gede-16-1:lab7 [2016/03/03 08:34] – [Lab Project] marino | public:t-gede-16-1:lab7 [2024/04/29 13:33] (current) – external edit 127.0.0.1 |
|---|
| profiles ps_1_1 arbfp1 | profiles ps_1_1 arbfp1 |
| } | } |
| </code>Notice that we are passing one parameter, ''mat_modelproj'', into the vertex shader. But instead of specifying a value, we simply indicate the name **worldviewproj_matrix**. This name refers to a [[http://stderr.org/doc/ogre-doc/manual/manual_20.html#SEC89|list of values]] that an ogre application can supply automatically to a shader program (that's why we use **param_named_auto**). We obviously won't know the model-to-view projection matrix when we create the material, so we want it supplied at run-time instead. Finally, create the material that uses these two new shader program definitions and additionally loads a texture into the available texture unit (copy the actual texture from ''\OgreSDK_vc10_v1-8-1\media\materials\textures\Water02.jpg'' into your **Materials** folder so that your material can find it for sure):<code> | </code>Notice that we are passing one parameter, ''mat_modelproj'', into the vertex shader. But instead of specifying a value, we simply indicate the name **worldviewproj_matrix**. This name refers to a [[http://www.ogre3d.org/docs/manual/manual_23.html#param_005findexed|list of values]] that an ogre application can supply automatically to a shader program (that's why we use **param_named_auto**). We obviously won't know the model-to-view projection matrix when we create the material, so we want it supplied at run-time instead. Finally, create the material that uses these two new shader program definitions and additionally loads a texture into the available texture unit (copy the actual texture from ''\OgreSDK_vc10_v1-8-1\media\materials\textures\Water02.jpg'' into your **Materials** folder so that your material can find it for sure):<code> |
| material shader/texture { | material shader/texture { |
| technique { | technique { |
| // We passed in the light and camera NodePaths and get their model space coordinates | // We passed in the light and camera NodePaths and get their model space coordinates |
| // here through the "mspos_<name>" variable. Everything here should be done in model space. | // here through the "mspos_<name>" variable. Everything here should be done in model space. |
| // The w component of the mspos_light indicated weather the light is directional or a point. | // The w component of the mspos_light indicated whether the light is directional or a point. |
| // So you must check weather you have to calculate the direction or use it directly. | // So you must check whether you have to calculate the direction or use it directly. |
| if( mpos_light.w == 1.0) { | if( mspos_light.w == 1.0) { |
| l_L = normalize(mspos_light.xyz - vtx_position.xyz); | l_L = normalize(mspos_light.xyz - vtx_position.xyz); |
| } else { | } else { |
| offset = (offset - 0.5f) * 2.0 ; | offset = (offset - 0.5f) * 2.0 ; |
| |
| | // You can change the last two values to configure the intensity and lightness of the shader. |
| float4 oColor = tex2D( RttTex, screenUV.xy + offset * 0.07 ) * 0.5 ; | float4 oColor = tex2D( RttTex, screenUV.xy + offset * 0.07 ) * 0.5 ; |
| |
