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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Vertex attributes are passed in view space instead of model space to the vertex shader","articleBody":"Relating to this topic : http://forum.processing.org/two/discussion/7484/vertex-attribute-bug-#Item_5\n\nI just set a color if the vertex X position is \u003e 0 or not. So if the vertex is really in world space, not in view, if i move the camera the color would stay at the same position on the box. Here, the color move on the box when i move the camera not the world(so the view matrix ?)\n\nIs-it a normal behaviour ?\n\nPDE\n\n```\nimport peasy.*;\n\nPShader cubemapShader; PeasyCam cam;\n\nvoid setup() { size(800, 640, P3D); frameRate(60);\n\n// Load cubemap shader. cubemapShader = loadShader(\"cubemapfrag.glsl\", \"cubemapvert.glsl\"); cam = new PeasyCam(this, 0, 0, 0, 180); cam.setYawRotationMode(); }\n\nvoid draw() { background(0); shader(cubemapShader); box(50); resetShader(); }\n```\n\nVertex\n\n```\n\nuniform mat4 transform;\n\nattribute vec4 position;\n\nvarying vec4 pos;\n\nvoid main() {\n\npos = position;\n\ngl_Position = transform * position;\n\n}\n\n```\n\nFragment\n\n```\n\nvarying vec4 pos;\n\nvoid main() { if(pos.x \u003e 0.0){ gl_FragColor = vec4(1,0,0,1); } else{ gl_FragColor = vec4(0,0,1,1); } }\n\n```\n","author":{"url":"https://github.com/P0ulp","@type":"Person","name":"P0ulp"},"datePublished":"2014-10-17T09:28:36.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/2904/processing/issues/2904"}